技术领域Technical field
本申请涉及烟气脱硫技术领域，特别是涉及一种火力发电用烟气脱硫控制系统及方法。This application relates to the technical field of flue gas desulfurization, and in particular to a flue gas desulfurization control system and method for thermal power generation.
背景技术Background technique
发电厂常用的烟气脱硫方法包括干法烟气脱硫、半干法烟气脱硫和湿法烟气脱硫，湿法烟气脱硫的脱硫效率一般可达到95％以上，其中以石灰石－石膏湿法烟气脱硫应用最广泛，通过调节石灰石浆液阀的开度，可以控制吸收塔浆液的PH值，进而获得更高的脱硫效率，因此浆液PH值的控制，与脱硫效率影响最大。Commonly used flue gas desulfurization methods in power plants include dry flue gas desulfurization, semi-dry flue gas desulfurization and wet flue gas desulfurization. The desulfurization efficiency of wet flue gas desulfurization can generally reach more than 95%. Among them, the limestone-gypsum wet flue gas desulfurization method Flue gas desulfurization is the most widely used. By adjusting the opening of the limestone slurry valve, the pH value of the absorption tower slurry can be controlled, thereby obtaining higher desulfurization efficiency. Therefore, the control of the slurry pH value has the greatest impact on the desulfurization efficiency.
现有技术中，对浆液PH值的控制还是传统手动控制、简单的回路控制，依赖工作人员积累的经验，浆液PH值的控制效果并不理想，无法保证脱硫系统安全运行。因此，提高浆液PH值的准确性，是目前需要解决的技术问题。In the existing technology, the control of the slurry pH value is still traditional manual control and simple loop control, relying on the accumulated experience of the staff. The control effect of the slurry pH value is not ideal, and the safe operation of the desulfurization system cannot be guaranteed. Therefore, improving the accuracy of the slurry pH value is a technical problem that needs to be solved at present.
发明内容Contents of the invention
为解决上述技术问题，本申请提供了一种火力发电用烟气脱硫控制系统及方法，旨在解决现有技术中，较为依赖工作人员积累的经验，浆液PH值的控制效果并不理想，无法保证脱硫系统安全运行的技术问题。In order to solve the above technical problems, this application provides a flue gas desulfurization control system and method for thermal power generation, aiming to solve the problem that in the existing technology, which relies more on the accumulated experience of the staff, the control effect of the slurry PH value is not ideal and cannot Technical issues to ensure the safe operation of the desulfurization system.
本申请的一些实施例中，获取脱硫过程中的运行参数，根据运行参数与石灰石浆液PH值之间的相关系数，确定相关运行参数，根据相关运行参数与石灰石浆液PH值之间的关系，建立浆液PH值预测模型，大大降低了浆液PH值的影响因素对浆液PH值的影响程度，从而提高了浆液PH值的准确性。In some embodiments of the present application, the operating parameters during the desulfurization process are obtained, the relevant operating parameters are determined based on the correlation coefficient between the operating parameters and the PH value of the limestone slurry, and the relevant operating parameters are established based on the relationship between the relevant operating parameters and the PH value of the limestone slurry. The slurry PH value prediction model greatly reduces the influence of factors affecting the slurry PH value on the slurry PH value, thereby improving the accuracy of the slurry PH value.
本申请的一些实施例中，浆液PH值预测模型得到的浆液PH预测值和浆液PH设定值进行作差，得到浆液偏差值，根据浆液偏差值对石灰石调节阀开度进行调整，从而调整石灰石浆液流量，获得更高的脱硫效率，根据浆液PH预测值和浆液PH实时值之间的关系，对浆液PH值预测模型进行优化，保证浆液PH预测值的准确度。In some embodiments of the present application, the slurry PH prediction value obtained by the slurry PH value prediction model is compared with the slurry PH set value to obtain a slurry deviation value, and the limestone regulating valve opening is adjusted according to the slurry deviation value, thereby adjusting the limestone Slurry flow rate to obtain higher desulfurization efficiency. Based on the relationship between the predicted slurry pH value and the real-time value of the slurry PH, the slurry PH value prediction model is optimized to ensure the accuracy of the slurry PH prediction value.
本申请的一些实施例中，提供了一种火力发电用烟气脱硫控制系统，应用于石灰石－石膏湿法烟气脱硫设备上，该系统包括：In some embodiments of this application, a flue gas desulfurization control system for thermal power generation is provided, which is applied to limestone-gypsum wet flue gas desulfurization equipment. The system includes:
采集模块，用于采集脱硫过程中的运行参数，对运行参数进行预处理，根据预处理后的运行参数，构建运行样本集；The collection module is used to collect operating parameters during the desulfurization process, preprocess the operating parameters, and construct an operating sample set based on the preprocessed operating parameters;
确定模块，用于根据运行样本集中的运行参数与石灰石浆液PH值之间的关系，筛选出相关运行参数；The determination module is used to filter out relevant operating parameters based on the relationship between the operating parameters in the operating sample set and the pH value of the limestone slurry;
建立模块，用于根据相关运行参数构建对应的相关样本集，根据相关样本集得到吸收塔的浆液PH值预测模型，基于浆液PH值预测模型与实时相关运行参数，确定浆液PH预测值，根据浆液PH预测值与浆液PH设定值确定PH偏差值，根据PH偏差值调整石灰石调节阀开度；Establish a module to construct corresponding relevant sample sets based on relevant operating parameters. Obtain the slurry PH value prediction model of the absorption tower based on the relevant sample sets. Based on the slurry PH value prediction model and real-time relevant operating parameters, determine the slurry PH predicted value. According to the slurry The pH prediction value and the slurry pH set value determine the pH deviation value, and the limestone regulating valve opening is adjusted according to the pH deviation value;
优化模块，用于获取吸收塔的浆液PH实时值，根据浆液PH实时值与浆液PH预测值确定评价系数，根据评价系数对浆液PH值预测模型进行优化。The optimization module is used to obtain the real-time slurry PH value of the absorption tower, determine the evaluation coefficient based on the real-time slurry PH value and the slurry PH predicted value, and optimize the slurry PH value prediction model based on the evaluation coefficient.
在本申请的一些实施例中，采集脱硫过程中的运行参数，对运行参数进行预处理，包括：In some embodiments of the present application, operating parameters during the desulfurization process are collected, and the operating parameters are preprocessed, including:
根据历史数据确定运行参数的采集周期，按照采集周期通过预设采集设备得到运行参数，对运行参数进行预处理，所述预处理包括误差处理和标准化处理；Determine the collection cycle of operating parameters based on historical data, obtain the operating parameters through preset collection equipment according to the collection cycle, and perform preprocessing on the operating parameters. The preprocessing includes error processing and standardization processing;
所述运行参数包括原烟气流量、净烟气流量、原烟气二氧化硫含量、净烟气二氧化硫含量、原烟气温度、净烟气温度、原烟气灰尘浓度、净烟气灰尘浓度、原烟气氧气含量、净烟气氧气含量、吸收塔浆液密度、石灰石浆液流量和PH值。The operating parameters include original flue gas flow, net flue gas flow, original flue gas sulfur dioxide content, net flue gas sulfur dioxide content, original flue gas temperature, net flue gas temperature, original flue gas dust concentration, net flue gas dust concentration, original flue gas dust concentration. Flue gas oxygen content, net flue gas oxygen content, absorption tower slurry density, limestone slurry flow rate and PH value.
在本申请的一些实施例中，根据运行样本集中的运行参数与石灰石浆液PH值之间的关系，筛选出相关运行参数，包括：In some embodiments of the present application, relevant operating parameters are screened out based on the relationship between the operating parameters in the operating sample set and the pH value of the limestone slurry, including:
计算每个预处理后的运行参数与石灰石浆液PH值变量的相关系数，并构建相关系数集合；Calculate the correlation coefficient between each pretreated operating parameter and the limestone slurry pH variable, and construct a correlation coefficient set;
根据相关系数集合，确定大于预设相关系数阈值的相关系数为目标相关系数；According to the correlation coefficient set, determine the correlation coefficient that is greater than the preset correlation coefficient threshold as the target correlation coefficient;
将所述目标相关系数对应的运行参数作为相关运行参数；Use the operating parameters corresponding to the target correlation coefficient as relevant operating parameters;
其中，Ki为第i个运行参数与石灰石浆液PH值的相关系数，其中，i＝1,2,3，…m；P(s)为石灰石浆液PH值变量数列，Yi(s)为第i个运行参数数列，其中，j＝1,2,3，…n；Zi,s为i和s最大时，∣P(s)-Yi(s)∣的差，即最大差值；Hi,s为i和s最小时，∣P(s)-Yi(s)∣的差，即最小差值；a1为运行参数与石灰石浆液PH值的最小差值对相关系数的影响权重系数，a2为运行参数与石灰石浆液PH值的最大差值对相关系数的影响权重系数。Among them, Ki is the correlation coefficient between the i-th operating parameter and the PH value of the limestone slurry, where i=1,2,3,...m; P(s) is the variable sequence of the PH value of the limestone slurry, Yi(s) is the i-th A sequence of operating parameters, where j=1,2,3,...n; Zi,s is the difference between ∣P(s)-Yi(s)∣ when i and s are maximum, that is, the maximum difference; Hi,s is the difference between ∣P(s)-Yi(s)∣ when i and s are minimum, that is, the minimum difference; a1 is the weight coefficient of the minimum difference between the operating parameters and the PH value of the limestone slurry on the correlation coefficient, and a2 is the operating weight coefficient The maximum difference between the parameter and the pH value of the limestone slurry affects the weight coefficient of the correlation coefficient.
在本申请的一些实施例中，根据相关样本集得到吸收塔的浆液PH值预测模型，包括：In some embodiments of the present application, the slurry pH prediction model of the absorption tower is obtained based on relevant sample sets, including:
将相关样本集中的运行参数作为控制量，浆液PH值作为被控量，在稳态工况下进行阶跃响应试验，得到控制量与被控量之间的函数关系，构建浆液PH值的第一预测模型；The operating parameters in the relevant sample set are used as the control quantity, and the slurry pH value is used as the controlled quantity. A step response test is performed under steady-state operating conditions to obtain the functional relationship between the control quantity and the controlled quantity, and the third parameter of the slurry pH value is constructed. a prediction model;
基于粒子群优化算法，对第一预测模型进行全局寻优，得到粒子的个体最优解和全局最优解；Based on the particle swarm optimization algorithm, the first prediction model is globally optimized to obtain the individual optimal solution and the global optimal solution of the particles;
获取第一预测模型的预测数据，计算预测数据与实际数据的差值，根据差值与预设差值阈值之间的关系，调整个体最优解与全局最优解的对应关系；Obtain the prediction data of the first prediction model, calculate the difference between the prediction data and the actual data, and adjust the corresponding relationship between the individual optimal solution and the global optimal solution according to the relationship between the difference and the preset difference threshold;
获取迭代后的全局最优解，将全局最优解对应的参数对第一预测模型进行优化，得到浆液PH值预测模型。The global optimal solution after iteration is obtained, and the parameters corresponding to the global optimal solution are optimized for the first prediction model to obtain a slurry pH value prediction model.
在本申请的一些实施例中，根据PH偏差值调整石灰石调节阀开度，包括：In some embodiments of the present application, adjusting the opening of the limestone regulating valve according to the pH deviation value includes:
所述建立模块预先设定有第一预设PH偏差值、第二预设PH偏差值、第三预设PH偏差值和第四预设PH偏差值，其中，第一预设PH偏差值小于第二预设PH偏差值，第二预设PH偏差值小于0，第三预设PH偏差值大于0，第三预设PH偏差值小于第四预设PH偏差值，还预先设定有第一预设开度，第二预设开度，第三预设开度和第四预设开度，其中，第一预设开度小于第二预设开度，第三预设开度小于第四预设开度，且第一预设开度、第二预设开度与第三预设开度、第四预设开度的开度方向相反；The establishment module is preset with a first preset PH deviation value, a second preset PH deviation value, a third preset PH deviation value and a fourth preset PH deviation value, wherein the first preset PH deviation value is less than The second preset PH deviation value is less than 0, the third preset PH deviation value is greater than 0, the third preset PH deviation value is less than the fourth preset PH deviation value, and a third preset PH deviation value is also preset. A preset opening, a second preset opening, a third preset opening and a fourth preset opening, wherein the first preset opening is smaller than the second preset opening, and the third preset opening is smaller than The fourth preset opening degree, and the opening directions of the first preset opening degree and the second preset opening degree are opposite to those of the third preset opening degree and the fourth preset opening degree;
根据PH偏差值与预设PH偏差值之间的关系，选定相应的石灰石调节阀开度；According to the relationship between the pH deviation value and the preset pH deviation value, the corresponding limestone regulating valve opening is selected;
当PH偏差值小于第一预设PH偏差值时，选定第四预设开度为当前石灰石调节阀开度；When the PH deviation value is less than the first preset PH deviation value, the fourth preset opening is selected as the current limestone regulating valve opening;
当PH偏差值处于第一预设PH偏差值和第二预设PH偏差值之间时，选定第三预设开度为当前石灰石调节阀开度；When the PH deviation value is between the first preset PH deviation value and the second preset PH deviation value, the third preset opening is selected as the current limestone regulating valve opening;
当PH偏差值处于第二预设PH偏差值和第三预设PH偏差值之间时，不调整石灰石调节阀开度；When the pH deviation value is between the second preset pH deviation value and the third preset pH deviation value, the limestone regulating valve opening is not adjusted;
当PH偏差值处于第三预设PH偏差值与第四预设PH偏差值之间时，选定第一预设开度为当前石灰石调节阀开度；When the PH deviation value is between the third preset PH deviation value and the fourth preset PH deviation value, the first preset opening is selected as the current limestone regulating valve opening;
当PH偏差值大于第四预设PH偏差值时，选定第二预设开度为当前石灰石调节阀开度。When the pH deviation value is greater than the fourth preset pH deviation value, the second preset opening degree is selected as the current limestone regulating valve opening degree.
在本申请的一些实施例中，根据浆液PH实时值与浆液PH预测值确定评价系数，包括：In some embodiments of the present application, the evaluation coefficient is determined based on the real-time value of slurry pH and the predicted value of slurry pH, including:
获取多个浆液PH实时值和浆液PH实时值对应的浆液PH预测值，根据浆液PH实时值和浆液PH预测值确定第一误差、第二误差、第三误差和决定系数；Obtain multiple real-time slurry PH values and predicted slurry pH values corresponding to the real-time slurry PH values, and determine the first error, the second error, the third error and the coefficient of determination based on the real-time slurry PH values and the predicted slurry PH values;
当第一误差不处于预设第一误差阈值区间时，计算第一误差与预设第一误差阈值区间的差值，基于差值确定第一分评价系数；When the first error is not within the preset first error threshold interval, calculate the difference between the first error and the preset first error threshold interval, and determine the first evaluation coefficient based on the difference;
当第二误差不处于预设第二误差阈值区间时，计算第二误差与预设第二误差阈值区间的差值，基于差值确定第二分评价系数；When the second error is not within the preset second error threshold interval, calculate the difference between the second error and the preset second error threshold interval, and determine the second evaluation coefficient based on the difference;
当第三误差不处于预设第三误差阈值区间时，计算第三误差与预设第三误差阈值区间的差值，基于差值确定第三分评价系数；When the third error is not within the preset third error threshold interval, calculate the difference between the third error and the preset third error threshold interval, and determine the third evaluation coefficient based on the difference;
当决定系数不处于预设决定系数阈值区间时，计算决定系数与预设决定系数阈值区间的差值，基于差值确定第四分评价系数；When the coefficient of determination is not within the preset coefficient of determination threshold interval, calculate the difference between the coefficient of determination and the preset threshold interval of the coefficient of determination, and determine the fourth evaluation coefficient based on the difference;
当第一误差处于预设第一误差阈值区间或第二误差处于预设第二误差阈值区间或第三误差处于预设第三误差阈值区间或决定系数处于预设决定系数阈值区间时，将第一分评价系数或第二分评价系数或第三分评价系数或第四分评价系数设定为第一常数；When the first error is within the preset first error threshold interval, the second error is within the preset second error threshold interval, the third error is within the preset third error threshold interval, or the determination coefficient is within the preset determination coefficient threshold interval, the third error is within the preset determination coefficient threshold interval. The first-point evaluation coefficient, the second-point evaluation coefficient, the third-point evaluation coefficient, or the fourth-point evaluation coefficient is set as a first constant;
根据第一分评价系数、第二分评价系数、第三分评价系数和第四分评价系数以及对应的权重系数，确定评价系数。The evaluation coefficient is determined based on the first evaluation coefficient, the second evaluation coefficient, the third evaluation coefficient and the fourth evaluation coefficient and the corresponding weight coefficients.
在本申请的一些实施例中，所述评价系数的计算公式为：In some embodiments of the present application, the calculation formula of the evaluation coefficient is:
其中，L为评价系数，J1为第一分评价系数，b1为第一分评价系数对应的权重，J2为第二分评价系数，b2为第二分评价系数对应的权重，J3为第三分评价系数，b3为第三分评价系数对应的权重，J4为第四分评价系数，b4为第四分评价系数对应的权重，e为指数函数，n为超过对应分评价系数阈值的个数，Ji为第i个分评价系数，i＝1或2或3或4，Jim为第i个分评价系数对应的分评价系数阈值。Among them, L is the evaluation coefficient, J1 is the first-point evaluation coefficient, b1 is the weight corresponding to the first-point evaluation coefficient, J2 is the second-point evaluation coefficient, b2 is the weight corresponding to the second-point evaluation coefficient, and J3 is the third point. Evaluation coefficient, b3 is the weight corresponding to the third-point evaluation coefficient, J4 is the fourth-point evaluation coefficient, b4 is the weight corresponding to the fourth-point evaluation coefficient, e is the exponential function, n is the number that exceeds the corresponding point evaluation coefficient threshold, Ji is the i-th sub-evaluation coefficient, i=1 or 2 or 3 or 4, and Jim is the sub-evaluation coefficient threshold corresponding to the i-th sub-evaluation coefficient.
在本申请的一些实施例中，根据评价系数对浆液PH值预测模型进行优化，包括：In some embodiments of the present application, the slurry pH value prediction model is optimized according to the evaluation coefficient, including:
优化模块预先设定有第一预设评价系数和第二预设评价系数，且第一预设评价系数小于第二预设评价系数，根据评价系数与第一预设评价系数、第二预设评价系数之间的关系，选定合适的优化方式对浆液PH值预测模型进行优化；The optimization module is preset with a first preset evaluation coefficient and a second preset evaluation coefficient, and the first preset evaluation coefficient is smaller than the second preset evaluation coefficient. According to the evaluation coefficient and the first preset evaluation coefficient and the second preset evaluation coefficient, Evaluate the relationship between coefficients and select an appropriate optimization method to optimize the slurry pH value prediction model;
当评价系数小于第一预设评价系数时，重新建立浆液PH值预测模型；When the evaluation coefficient is less than the first preset evaluation coefficient, the slurry pH value prediction model is re-established;
当评价系数处于第一预设评价系数和第二预设评价系数之间时，基于tSSA寻优算法对浆液PH值预测模型进行寻优，当tSSA达到最大迭代次数时，输出最优参数，根据最优参数对浆液PH值预测模型进行优化；When the evaluation coefficient is between the first preset evaluation coefficient and the second preset evaluation coefficient, the slurry pH value prediction model is optimized based on the tSSA optimization algorithm. When tSSA reaches the maximum number of iterations, the optimal parameters are output, according to The optimal parameters optimize the slurry pH prediction model;
当评价系数大于第二预设评价系数时，不对浆液PH值预测模型进行优化。When the evaluation coefficient is greater than the second preset evaluation coefficient, the slurry pH value prediction model is not optimized.
在本申请的一些实施例中，还包括一种火力发电用烟气脱硫控制方法：In some embodiments of the present application, a method for controlling flue gas desulfurization for thermal power generation is also included:
采集脱硫过程中的运行参数，对运行参数进行预处理，根据预处理后的运行参数，构建运行样本集；Collect operating parameters during the desulfurization process, preprocess the operating parameters, and construct an operating sample set based on the preprocessed operating parameters;
根据运行样本集中的运行参数与石灰石浆液PH值之间的关系，筛选出相关运行参数；Based on the relationship between the operating parameters in the operating sample set and the pH value of the limestone slurry, the relevant operating parameters are screened out;
根据相关运行参数构建对应的相关样本集，根据相关样本集得到吸收塔的浆液PH值预测模型，基于浆液PH值预测模型与实时相关运行参数，确定浆液PH预测值，根据浆液PH预测值与浆液PH设定值确定PH偏差值，根据PH偏差值调整石灰石调节阀开度；Construct corresponding relevant sample sets based on relevant operating parameters, and obtain the slurry PH value prediction model of the absorption tower based on the relevant sample sets. Based on the slurry PH value prediction model and real-time relevant operating parameters, determine the slurry PH predicted value. According to the slurry PH predicted value and slurry The PH setting value determines the PH deviation value, and the limestone regulating valve opening is adjusted according to the PH deviation value;
获取吸收塔的浆液PH实时值，根据浆液PH实时值与浆液PH预测值确定评价系数，根据评价系数对浆液PH值预测模型进行优化。Obtain the real-time slurry PH value of the absorption tower, determine the evaluation coefficient based on the real-time slurry PH value and the predicted slurry PH value, and optimize the slurry PH value prediction model based on the evaluation coefficient.
本申请实施例的一种火力发电用烟气脱硫控制系统及方法，与现有技术相比，其有益效果在于：Compared with the existing technology, the flue gas desulfurization control system and method for thermal power generation according to the embodiment of the present application has the following beneficial effects:
获取脱硫过程中的运行参数，根据运行参数与石灰石浆液PH值之间的相关系数，确定相关运行参数，根据相关运行参数与石灰石浆液PH值之间的关系，建立浆液PH值预测模型，大大降低了浆液PH值的影响因素对浆液PH值的影响程度，从而提高了浆液PH值的准确性。Obtain the operating parameters during the desulfurization process, determine the relevant operating parameters based on the correlation coefficient between the operating parameters and the PH value of the limestone slurry, and establish a slurry PH value prediction model based on the relationship between the relevant operating parameters and the PH value of the limestone slurry, which can greatly reduce The degree of influence of factors affecting the slurry pH value on the slurry PH value is understood, thereby improving the accuracy of the slurry PH value.
浆液PH值预测模型得到的浆液PH预测值和浆液PH设定值进行作差，得到浆液偏差值，根据浆液偏差值对石灰石调节阀开度进行调整，从而调整石灰石浆液流量，获得更高的脱硫效率，根据浆液PH预测值和浆液PH实时值之间的关系，对浆液PH值预测模型进行优化，保证浆液PH预测值的准确度。The slurry PH prediction value obtained by the slurry PH value prediction model is compared with the slurry PH set value to obtain the slurry deviation value. According to the slurry deviation value, the opening of the limestone regulating valve is adjusted to adjust the limestone slurry flow rate and obtain higher desulfurization. Efficiency, based on the relationship between the predicted slurry pH value and the real-time value of the slurry PH, the slurry PH value prediction model is optimized to ensure the accuracy of the slurry PH predicted value.
附图说明Description of the drawings
图1是本申请实施例优选实施例中一种火力发电用烟气脱硫控制系统的示意图；Figure 1 is a schematic diagram of a flue gas desulfurization control system for thermal power generation in a preferred embodiment of the present application;
图2是本申请实施例优选实施例中一种火力发电用烟气脱硫控制方法的示意图。Figure 2 is a schematic diagram of a flue gas desulfurization control method for thermal power generation in a preferred embodiment of the present application.
具体实施方式Detailed ways
下面结合附图和实施例，对本申请的具体实施方式作进一步详细描述。以下实施例用于说明本申请，但不用来限制本申请的范围。Specific implementations of the present application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present application but are not intended to limit the scope of the present application.
在本申请的描述中，需要理解的是，术语“中心”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", The orientations or positional relationships indicated by "top", "bottom", "inner", "outside", etc. are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present application and simplifying the description, and are not indicated or implied. The devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the application.
术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。The terms “first” and “second” are used for descriptive purposes only and shall not be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of this application, unless otherwise stated, "plurality" means two or more.
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体的连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本申请中的具体含义。In the description of this application, it should be noted that, unless otherwise clearly stated and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection. Connection, or integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood on a case-by-case basis.
如图1所示，本申请实施例优选实施例的一种火力发电用烟气脱硫控制系统，应用于石灰石－石膏湿法烟气脱硫设备上，该系统包括：As shown in Figure 1, a flue gas desulfurization control system for thermal power generation according to the preferred embodiment of the present application is applied to limestone-gypsum wet flue gas desulfurization equipment. The system includes:
采集模块，用于采集脱硫过程中的运行参数，对运行参数进行预处理，根据预处理后的运行参数，构建运行样本集；The collection module is used to collect operating parameters during the desulfurization process, preprocess the operating parameters, and construct an operating sample set based on the preprocessed operating parameters;
确定模块，用于根据运行样本集中的运行参数与石灰石浆液PH值之间的关系，筛选出相关运行参数；The determination module is used to filter out relevant operating parameters based on the relationship between the operating parameters in the operating sample set and the pH value of the limestone slurry;
建立模块，用于根据相关运行参数构建对应的相关样本集，根据相关样本集得到吸收塔的浆液PH值预测模型，基于浆液PH值预测模型与实时相关运行参数，确定浆液PH预测值，根据浆液PH预测值与浆液PH设定值确定PH偏差值，根据PH偏差值调整石灰石调节阀开度；Establish a module to construct corresponding relevant sample sets based on relevant operating parameters. Obtain the slurry PH value prediction model of the absorption tower based on the relevant sample sets. Based on the slurry PH value prediction model and real-time relevant operating parameters, determine the slurry PH predicted value. According to the slurry The pH prediction value and the slurry pH set value determine the pH deviation value, and the limestone regulating valve opening is adjusted according to the pH deviation value;
优化模块，用于获取吸收塔的浆液PH实时值，根据浆液PH实时值与浆液PH预测值确定评价系数，根据评价系数对浆液PH值预测模型进行优化。The optimization module is used to obtain the real-time slurry PH value of the absorption tower, determine the evaluation coefficient based on the real-time slurry PH value and the slurry PH predicted value, and optimize the slurry PH value prediction model based on the evaluation coefficient.
在本申请的一些实施例中，采集脱硫过程中的运行参数，对运行参数进行预处理，包括：In some embodiments of the present application, operating parameters during the desulfurization process are collected, and the operating parameters are preprocessed, including:
根据历史数据确定运行参数的采集周期，按照采集周期通过预设采集设备得到运行参数，对运行参数进行预处理，所述预处理包括误差处理和标准化处理；Determine the collection cycle of operating parameters based on historical data, obtain the operating parameters through preset collection equipment according to the collection cycle, and perform preprocessing on the operating parameters. The preprocessing includes error processing and standardization processing;
所述运行参数包括原烟气流量、净烟气流量、原烟气二氧化硫含量、净烟气二氧化硫含量、原烟气温度、净烟气温度、原烟气灰尘浓度、净烟气灰尘浓度、原烟气氧气含量、净烟气氧气含量、吸收塔浆液密度、石灰石浆液流量和PH值。The operating parameters include original flue gas flow, net flue gas flow, original flue gas sulfur dioxide content, net flue gas sulfur dioxide content, original flue gas temperature, net flue gas temperature, original flue gas dust concentration, net flue gas dust concentration, original flue gas dust concentration. Flue gas oxygen content, net flue gas oxygen content, absorption tower slurry density, limestone slurry flow rate and PH value.
在本实施例中，根据历史数据确定脱硫过程中运行工况的稳定性，若稳定将历史采集周期作为当前采集周期，若不稳定，缩短历史采集周期重新设定采集周期，采集设备包括多个传感器，用于得到多个运行参数。In this embodiment, the stability of the operating conditions during the desulfurization process is determined based on historical data. If it is stable, the historical collection cycle is used as the current collection cycle. If it is unstable, the historical collection cycle is shortened and the collection cycle is reset. The collection equipment includes multiple Sensors are used to obtain multiple operating parameters.
在本申请的一些实施例中，根据运行样本集中的运行参数与石灰石浆液PH值之间的关系，筛选出相关运行参数，包括：In some embodiments of the present application, relevant operating parameters are screened out based on the relationship between the operating parameters in the operating sample set and the pH value of the limestone slurry, including:
计算每个预处理后的运行参数与石灰石浆液PH值变量的相关系数，并构建相关系数集合；Calculate the correlation coefficient between each pretreated operating parameter and the limestone slurry pH variable, and construct a correlation coefficient set;
根据相关系数集合，确定大于预设相关系数阈值的相关系数为目标相关系数；According to the correlation coefficient set, determine the correlation coefficient that is greater than the preset correlation coefficient threshold as the target correlation coefficient;
将所述目标相关系数对应的运行参数作为相关运行参数；Use the operating parameters corresponding to the target correlation coefficient as relevant operating parameters;
所述相关系数的计算公式为：The calculation formula of the correlation coefficient is:
其中，Ki为第i个运行参数与石灰石浆液PH值的相关系数，其中，i＝1,2,3，…m；P(s)为石灰石浆液PH值变量数列，Yi(s)为第i个运行参数数列，其中，j＝1,2,3，…n；Zi,s为i和s最大时，∣P(s)-Yi(s)∣的差，即最大差值；Hi,s为i和s最小时，∣P(s)-Yi(s)∣的差，即最小差值；a1为运行参数与石灰石浆液PH值的最小差值对相关系数的影响权重系数，a2为运行参数与石灰石浆液PH值的最大差值对相关系数的影响权重系数。Among them, Ki is the correlation coefficient between the i-th operating parameter and the PH value of the limestone slurry, where i=1,2,3,...m; P(s) is the variable sequence of the PH value of the limestone slurry, Yi(s) is the i-th A sequence of operating parameters, where j=1,2,3,...n; Zi,s is the difference between ∣P(s)-Yi(s)∣ when i and s are maximum, that is, the maximum difference; Hi,s is the difference between ∣P(s)-Yi(s)∣ when i and s are minimum, that is, the minimum difference; a1 is the weight coefficient of the minimum difference between the operating parameters and the PH value of the limestone slurry on the correlation coefficient, and a2 is the operating weight coefficient The maximum difference between the parameter and the pH value of the limestone slurry affects the weight coefficient of the correlation coefficient.
在本实施例中，通过计算运行参数与浆液PH值变量之间的相关系数，得到影响浆液PH值的影响因素以及对应的影响参数，为后续建立浆液PH预测模型得到浆液PH预测值奠定基础，大大提高了浆液PH值预测模型、浆液PH预测值的准确度。In this embodiment, by calculating the correlation coefficient between the operating parameters and the slurry PH value variable, the influencing factors that affect the slurry pH value and the corresponding influencing parameters are obtained, which lays the foundation for the subsequent establishment of a slurry PH prediction model to obtain the slurry PH prediction value. The accuracy of the slurry PH value prediction model and slurry PH prediction value is greatly improved.
在本申请的一些实施例中，根据相关样本集得到吸收塔的浆液PH值预测模型，包括：In some embodiments of the present application, the slurry pH prediction model of the absorption tower is obtained based on relevant sample sets, including:
将相关样本集中的运行参数作为控制量，浆液PH值作为被控量，在稳态工况下进行阶跃响应试验，得到控制量与被控量之间的函数关系，构建浆液PH值的第一预测模型；The operating parameters in the relevant sample set are used as the control quantity, and the slurry pH value is used as the controlled quantity. A step response test is performed under steady-state operating conditions to obtain the functional relationship between the control quantity and the controlled quantity, and the third parameter of the slurry pH value is constructed. a prediction model;
基于粒子群优化算法，对第一预测模型进行全局寻优，得到粒子的个体最优解和全局最优解；Based on the particle swarm optimization algorithm, the first prediction model is globally optimized to obtain the individual optimal solution and the global optimal solution of the particles;
获取第一预测模型的预测数据，计算预测数据与实际数据的差值，根据差值与预设差值阈值之间的关系，调整个体最优解与全局最优解的对应关系；Obtain the prediction data of the first prediction model, calculate the difference between the prediction data and the actual data, and adjust the corresponding relationship between the individual optimal solution and the global optimal solution according to the relationship between the difference and the preset difference threshold;
获取迭代后的全局最优解，将全局最优解对应的参数对第一预测模型进行优化，得到浆液PH值预测模型。The global optimal solution after iteration is obtained, and the parameters corresponding to the global optimal solution are optimized for the first prediction model to obtain a slurry pH value prediction model.
在本申请的一些实施例中，根据PH偏差值调整石灰石调节阀开度，包括：In some embodiments of the present application, adjusting the opening of the limestone regulating valve according to the pH deviation value includes:
所述建立模块预先设定有第一预设PH偏差值、第二预设PH偏差值、第三预设PH偏差值和第四预设PH偏差值，其中，第一预设PH偏差值小于第二预设PH偏差值，第二预设PH偏差值小于0，第三预设PH偏差值大于0，第三预设PH偏差值小于第四预设PH偏差值，还预先设定有第一预设开度，第二预设开度，第三预设开度和第四预设开度，其中，第一预设开度小于第二预设开度，第三预设开度小于第四预设开度，且第一预设开度、第二预设开度与第三预设开度、第四预设开度的开度方向相反；The establishment module is preset with a first preset PH deviation value, a second preset PH deviation value, a third preset PH deviation value and a fourth preset PH deviation value, wherein the first preset PH deviation value is less than The second preset PH deviation value is less than 0, the third preset PH deviation value is greater than 0, the third preset PH deviation value is less than the fourth preset PH deviation value, and a third preset PH deviation value is also preset. A preset opening, a second preset opening, a third preset opening and a fourth preset opening, wherein the first preset opening is smaller than the second preset opening, and the third preset opening is smaller than The fourth preset opening degree, and the opening directions of the first preset opening degree and the second preset opening degree are opposite to those of the third preset opening degree and the fourth preset opening degree;
根据PH偏差值与预设PH偏差值之间的关系，选定相应的石灰石调节阀开度；According to the relationship between the pH deviation value and the preset pH deviation value, the corresponding limestone regulating valve opening is selected;
当PH偏差值小于第一预设PH偏差值时，选定第四预设开度为当前石灰石调节阀开度；When the PH deviation value is less than the first preset PH deviation value, the fourth preset opening is selected as the current limestone regulating valve opening;
当PH偏差值处于第一预设PH偏差值和第二预设PH偏差值之间时，选定第三预设开度为当前石灰石调节阀开度；When the PH deviation value is between the first preset PH deviation value and the second preset PH deviation value, the third preset opening is selected as the current limestone regulating valve opening;
当PH偏差值处于第二预设PH偏差值和第三预设PH偏差值之间时，不调整石灰石调节阀开度；When the pH deviation value is between the second preset pH deviation value and the third preset pH deviation value, the opening of the limestone regulating valve is not adjusted;
当PH偏差值处于第三预设PH偏差值与第四预设PH偏差值之间时，选定第一预设开度为当前石灰石调节阀开度；When the PH deviation value is between the third preset PH deviation value and the fourth preset PH deviation value, the first preset opening is selected as the current limestone regulating valve opening;
当PH偏差值大于第四预设PH偏差值时，选定第二预设开度为当前石灰石调节阀开度。When the pH deviation value is greater than the fourth preset pH deviation value, the second preset opening degree is selected as the current limestone regulating valve opening degree.
在本申请的一些实施例中，根据浆液PH实时值与浆液PH预测值确定评价系数，包括：In some embodiments of the present application, the evaluation coefficient is determined based on the real-time value of slurry pH and the predicted value of slurry pH, including:
获取多个浆液PH实时值和浆液PH实时值对应的浆液PH预测值，根据浆液PH实时值和浆液PH预测值确定第一误差、第二误差、第三误差和决定系数；Obtain multiple real-time slurry PH values and predicted slurry pH values corresponding to the real-time slurry PH values, and determine the first error, the second error, the third error and the coefficient of determination based on the real-time slurry PH values and the predicted slurry PH values;
当第一误差不处于预设第一误差阈值区间时，计算第一误差与预设第一误差阈值区间的差值，基于差值确定第一分评价系数；When the first error is not within the preset first error threshold interval, calculate the difference between the first error and the preset first error threshold interval, and determine the first evaluation coefficient based on the difference;
当第二误差不处于预设第二误差阈值区间时，计算第二误差与预设第二误差阈值区间的差值，基于差值确定第二分评价系数；When the second error is not within the preset second error threshold interval, calculate the difference between the second error and the preset second error threshold interval, and determine the second evaluation coefficient based on the difference;
当第三误差不处于预设第三误差阈值区间时，计算第三误差与预设第三误差阈值区间的差值，基于差值确定第三分评价系数；When the third error is not within the preset third error threshold interval, calculate the difference between the third error and the preset third error threshold interval, and determine the third evaluation coefficient based on the difference;
当决定系数不处于预设决定系数阈值区间时，计算决定系数与预设决定系数阈值区间的差值，基于差值确定第四分评价系数；When the coefficient of determination is not within the preset coefficient of determination threshold interval, calculate the difference between the coefficient of determination and the preset threshold interval of the coefficient of determination, and determine the fourth evaluation coefficient based on the difference;
当第一误差处于预设第一误差阈值区间或第二误差处于预设第二误差阈值区间或第三误差处于预设第三误差阈值区间或决定系数处于预设决定系数阈值区间时，将第一分评价系数或第二分评价系数或第三分评价系数或第四分评价系数设定为第一常数；When the first error is within the preset first error threshold interval, the second error is within the preset second error threshold interval, the third error is within the preset third error threshold interval, or the determination coefficient is within the preset determination coefficient threshold interval, the third error is within the preset determination coefficient threshold interval. The first-point evaluation coefficient, the second-point evaluation coefficient, the third-point evaluation coefficient, or the fourth-point evaluation coefficient is set as a first constant;
根据第一分评价系数、第二分评价系数、第三分评价系数和第四分评价系数以及对应的权重系数，确定评价系数。The evaluation coefficient is determined based on the first evaluation coefficient, the second evaluation coefficient, the third evaluation coefficient and the fourth evaluation coefficient and the corresponding weight coefficients.
在本实施例中，第一误差为平均绝对值误差，第二误差为均方根误差，第三误差为均方误差，决定系数具体用量衡量回归模型的拟合程度。In this embodiment, the first error is the average absolute value error, the second error is the root mean square error, and the third error is the mean square error. The specific amount of the determination coefficient measures the fitting degree of the regression model.
在本实施例中，第一常数设定为1，当第一误差不处于预设第一误差阈值区间时，计算第一误差与预设第一误差阈值区间的差值，该差值为第一误差与第一误差阈值区间内最接近的端点值的差值，例如第一误差为0.5，第一误差阈值区间为(0.7，1)，则差值为0.7－0.5，第二误差、第三误差和决定系数同理。In this embodiment, the first constant is set to 1. When the first error is not within the preset first error threshold interval, the difference between the first error and the preset first error threshold interval is calculated, and the difference is the The difference between an error and the closest endpoint value within the first error threshold interval. For example, the first error is 0.5, and the first error threshold interval is (0.7, 1), then the difference is 0.7-0.5, and the second error, The same applies to the three errors and coefficient of determination.
在本申请的一些实施例中，所述评价系数的计算公式为：In some embodiments of the present application, the calculation formula of the evaluation coefficient is:
其中，L为评价系数，J1为第一分评价系数，b1为第一分评价系数对应的权重，J2为第二分评价系数，b2为第二分评价系数对应的权重，J3为第三分评价系数，b3为第三分评价系数对应的权重，J4为第四分评价系数，b4为第四分评价系数对应的权重，e为指数函数，n为超过对应分评价系数阈值的个数，Ji为第i个分评价系数，i＝1或2或3或4，Jim为第i个分评价系数对应的分评价系数阈值。Among them, L is the evaluation coefficient, J1 is the first-point evaluation coefficient, b1 is the weight corresponding to the first-point evaluation coefficient, J2 is the second-point evaluation coefficient, b2 is the weight corresponding to the second-point evaluation coefficient, and J3 is the third point. Evaluation coefficient, b3 is the weight corresponding to the third-point evaluation coefficient, J4 is the fourth-point evaluation coefficient, b4 is the weight corresponding to the fourth-point evaluation coefficient, e is the exponential function, n is the number that exceeds the corresponding point evaluation coefficient threshold, Ji is the i-th sub-evaluation coefficient, i=1 or 2 or 3 or 4, and Jim is the sub-evaluation coefficient threshold corresponding to the i-th sub-evaluation coefficient.
在本申请的一些实施例中，根据评价系数对浆液PH值预测模型进行优化，包括：In some embodiments of the present application, the slurry pH value prediction model is optimized according to the evaluation coefficient, including:
优化模块预先设定有第一预设评价系数和第二预设评价系数，且第一预设评价系数小于第二预设评价系数，根据评价系数与第一预设评价系数、第二预设评价系数之间的关系，选定合适的优化方式对浆液PH值预测模型进行优化；The optimization module is preset with a first preset evaluation coefficient and a second preset evaluation coefficient, and the first preset evaluation coefficient is smaller than the second preset evaluation coefficient. According to the evaluation coefficient and the first preset evaluation coefficient and the second preset evaluation coefficient, Evaluate the relationship between coefficients and select an appropriate optimization method to optimize the slurry pH value prediction model;
当评价系数小于第一预设评价系数时，重新建立浆液PH值预测模型；When the evaluation coefficient is less than the first preset evaluation coefficient, the slurry pH value prediction model is re-established;
当评价系数处于第一预设评价系数和第二预设评价系数之间时，基于tSSA寻优算法对浆液PH值预测模型进行寻优，当tSSA达到最大迭代次数时，输出最优参数，根据最优参数对浆液PH值预测模型进行优化；When the evaluation coefficient is between the first preset evaluation coefficient and the second preset evaluation coefficient, the slurry pH value prediction model is optimized based on the tSSA optimization algorithm. When tSSA reaches the maximum number of iterations, the optimal parameters are output. According to The optimal parameters optimize the slurry pH prediction model;
当评价系数大于第二预设评价系数时，不对浆液PH值预测模型进行优化。When the evaluation coefficient is greater than the second preset evaluation coefficient, the slurry pH value prediction model is not optimized.
在本申请的一些实施例中，如图2所示，还包括一种火力发电用烟气脱硫控制方法：In some embodiments of the present application, as shown in Figure 2, a flue gas desulfurization control method for thermal power generation is also included:
步骤S201：采集脱硫过程中的运行参数，对运行参数进行预处理，根据预处理后的运行参数，构建运行样本集；Step S201: Collect operating parameters during the desulfurization process, preprocess the operating parameters, and construct an operating sample set based on the preprocessed operating parameters;
步骤S202：根据运行样本集中的运行参数与石灰石浆液PH值之间的关系，筛选出相关运行参数；Step S202: Screen out relevant operating parameters based on the relationship between the operating parameters in the operating sample set and the pH value of the limestone slurry;
步骤S203：根据相关运行参数构建对应的相关样本集，根据相关样本集得到吸收塔的浆液PH值预测模型，基于浆液PH值预测模型与实时相关运行参数，确定浆液PH预测值，根据浆液PH预测值与浆液PH设定值确定PH偏差值，根据PH偏差值调整石灰石调节阀开度；Step S203: Construct a corresponding relevant sample set according to the relevant operating parameters, obtain the slurry PH value prediction model of the absorption tower based on the relevant sample set, determine the slurry PH value prediction value based on the slurry PH value prediction model and real-time relevant operating parameters, and predict the slurry pH value based on the slurry pH value prediction model. The pH deviation value is determined by the pH value and the slurry pH setting value, and the opening of the limestone regulating valve is adjusted according to the pH deviation value;
步骤S204：获取吸收塔的浆液PH实时值，根据浆液PH实时值与浆液PH预测值确定评价系数，根据评价系数对浆液PH值预测模型进行优化。Step S204: Obtain the real-time slurry PH value of the absorption tower, determine the evaluation coefficient based on the real-time slurry PH value and the slurry PH predicted value, and optimize the slurry PH value prediction model based on the evaluation coefficient.
根据本申请的第一构思，获取脱硫过程中的运行参数，根据运行参数与石灰石浆液PH值之间的相关系数，确定相关运行参数，根据相关运行参数与石灰石浆液PH值之间的关系，建立浆液PH值预测模型，大大降低了浆液PH值的影响因素对浆液PH值的影响程度，从而提高了浆液PH值的准确性。According to the first concept of this application, the operating parameters during the desulfurization process are obtained, the relevant operating parameters are determined based on the correlation coefficient between the operating parameters and the PH value of the limestone slurry, and the relevant operating parameters are established based on the relationship between the relevant operating parameters and the PH value of the limestone slurry. The slurry PH value prediction model greatly reduces the influence of factors affecting the slurry PH value on the slurry PH value, thereby improving the accuracy of the slurry PH value.
根据本申请的第二构思，浆液PH值预测模型得到的浆液PH预测值和浆液PH设定值进行作差，得到浆液偏差值，根据浆液偏差值对石灰石调节阀开度进行调整，从而调整石灰石浆液流量，获得更高的脱硫效率，根据浆液PH预测值和浆液PH实时值之间的关系，对浆液PH值预测模型进行优化，保证浆液PH预测值的准确度。According to the second idea of the present application, the slurry PH prediction value obtained by the slurry PH value prediction model is compared with the slurry PH set value to obtain a slurry deviation value, and the opening of the limestone regulating valve is adjusted according to the slurry deviation value, thereby adjusting the limestone Slurry flow rate to obtain higher desulfurization efficiency. Based on the relationship between the predicted slurry pH value and the real-time value of the slurry PH, the slurry PH value prediction model is optimized to ensure the accuracy of the slurry PH prediction value.
以上所述仅是本申请的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请技术原理的前提下，还可以做出若干改进和替换，这些改进和替换也应视为本申请的保护范围。The above are only preferred embodiments of the present application. It should be pointed out that those of ordinary skill in the art can also make several improvements and substitutions without departing from the technical principles of the present application. These improvements and substitutions It should also be regarded as the protection scope of this application.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311418070.4ACN117687357A (en) | 2023-10-27 | 2023-10-27 | A flue gas desulfurization control system and method for thermal power generation |
| Application Number | Priority Date | Filing Date | Title |
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| CN202311418070.4ACN117687357A (en) | 2023-10-27 | 2023-10-27 | A flue gas desulfurization control system and method for thermal power generation |
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| CN117687357Atrue CN117687357A (en) | 2024-03-12 |
| Application Number | Title | Priority Date | Filing Date |
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| CN202311418070.4APendingCN117687357A (en) | 2023-10-27 | 2023-10-27 | A flue gas desulfurization control system and method for thermal power generation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019150797A (en)* | 2018-03-06 | 2019-09-12 | 三菱日立パワーシステムズ株式会社 | System and method for supporting operation of desulfurization device |
| CN112044243A (en)* | 2020-08-05 | 2020-12-08 | 华能国际电力股份有限公司上安电厂 | Automatic control system and method for emission indexes of thermal power generating unit desulfurization device |
| CN114225662A (en)* | 2021-12-07 | 2022-03-25 | 国网河北能源技术服务有限公司 | Flue gas desulfurization and denitrification optimization control method based on hysteresis model |
| CN115309117A (en)* | 2022-08-04 | 2022-11-08 | 浙江大学 | WFGD export SO based on data drive 2 Concentration prediction and intelligent optimization method |
| CN116440670A (en)* | 2023-04-12 | 2023-07-18 | 华能伊春热电有限公司 | Limestone slurry density stability control method |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019150797A (en)* | 2018-03-06 | 2019-09-12 | 三菱日立パワーシステムズ株式会社 | System and method for supporting operation of desulfurization device |
| CN112044243A (en)* | 2020-08-05 | 2020-12-08 | 华能国际电力股份有限公司上安电厂 | Automatic control system and method for emission indexes of thermal power generating unit desulfurization device |
| CN114225662A (en)* | 2021-12-07 | 2022-03-25 | 国网河北能源技术服务有限公司 | Flue gas desulfurization and denitrification optimization control method based on hysteresis model |
| CN115309117A (en)* | 2022-08-04 | 2022-11-08 | 浙江大学 | WFGD export SO based on data drive 2 Concentration prediction and intelligent optimization method |
| CN116440670A (en)* | 2023-04-12 | 2023-07-18 | 华能伊春热电有限公司 | Limestone slurry density stability control method |
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