A kind of anti-sintering sawdust based biomass granule and preparation method thereofTechnical field
The present invention relates to biomass fuel technical field, particularly relate to a kind of anti-sintering sawdust based biomass granule and system thereofMake method.
Background technology
Along with mankind's increase day by day to energy demand, now widely used oil, coal, natural gas etc. are non-renewableThe energy be faced with day by day exhausted problem.The energy crisis that will face to solve the mankind be necessary to develop reproducible newlyThe energy replaces non-renewable Fossil fuel.Biomass energy, as a kind of cheap, regenerative resource of cleaning, is the most more comeMore being paid close attention to by people widely, China is as large agricultural country, in the raw material supply of biomass energy, energy demand, government's political affairsThe aspects such as the support of plan all have greater advantage.Sawdust, straw source is abundant, and with low cost, sawdust sulfur content is the lowest simultaneously, with itThe biomass granule fuel substitute fossil fuels prepared for raw material, to preserving the ecological environment, Development of Social Economy, implementing the energy canSustainable development strategy has major and immediate significance.But traditional biomass granule fuel utilizing sawdust straw to prepare existsCalorific value slagging scorification boiler low, easy uses dangerous, sulfur content to exceed standard many defects such as pollution environment, ash are big.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of anti-sintering sawdust based biomass granule andIts manufacture method.
The present invention is achieved by the following technical solutions:
A kind of anti-sintering sawdust based biomass granule, is prepared by the raw materials in: sawdust 120-125, bamboo bits 30-33,Bark 40-42, corn bran 25-27, celery residue 22-24, Amylum Nelumbinis Rhizomatis 11-13, refractory brick bits 12-13, potassium chlorate 2.5-2.8, sucrose2-4, Camphora 3-5, acrylic acid ester emulsion 5-7, calcium hydroxide 0.8-0.9, suitable quantity of water.
The manufacture method of described a kind of anti-sintering sawdust based biomass granule, comprises the following steps:
(1) sawdust is put in retort at a temperature of 450-500 DEG C, isolation air carbonization 20-30 minute, it is cooled to room temperatureCamphorate, sucrose grinds 40-50 minute；
(2) being soaked 1-2 hour by refractory brick crumb 5-10wt% hydrochloric acid solution, washing, to neutral, adds water ultrasonic at 80-100 DEG CRipple processes 8-10 minute, then soaks 1-2 hour with 8-12wt% sodium hydroxide solution, and washing, to neutral, adds water at 80-100 DEG CUltrasonic Treatment 8-10 minute, is subsequently adding acrylic acid ester emulsion and grinds 20-30 minute, dries and prepares modified refractory brick bits；
(3) by bark, corn bran with hot-water soak 10-12 hour of 60-70 DEG C, filter and put in fermentation vat, control fermentation vatTemperature is at 30-50 DEG C, and humidity is 50-60%, and after fermentation process 20-30 hour, addition modified refractory brick bits, bamboo bits, celery residue stirMix and uniformly continue fermentation 10-20 days, be cooled to room temperature and put into pulverizer is crushed to 60-80 mesh；
(4) by step (1), the mixing of (3) material stirring, adding suitable quantity of water and other residual components stirring and evenly mixing, feeding is squeezed intoType machine, is squeezed into a diameter of 5-8mm, the cylindrical particle of a length of 3-8cm with the briquetting pressure of 45MPa, is dried, discharging.
The invention have the advantage that present invention process simple operations is easy, on the one hand sawdust carbonization processed the most modified,Improve toughness and the density of DIC granule, the combustion heat value that improve sawdust carbon residue the volatilization reducing in combustion processPoint, the waste gas sulfur content of discharge is low, on the other hand, after bark, corn bran are carried out fermentation process, changes the structure sheaf of raw materialForm fine and close organizational structure, form the organic material of high-load, improve organic constituent, then by modification refractory brickBits, bamboo bits, celery residue add and continue fermentation process, and then improve the combustible in organic matter material, the most again compatibility other haveEffect auxiliary agent is extruded, and the anti-sintering of sawdust based biomass granular fuel prepared, moisture content is low, and alkaline earth metal content is low, woodenCellulose content is high, and burning time is long.
Detailed description of the invention
A kind of anti-sintering sawdust based biomass granule, is prepared by the raw materials in: sawdust 120, bamboo bits 30, bark40, corn bran 25, celery residue 22, Amylum Nelumbinis Rhizomatis 11, refractory brick bits 12, potassium chlorate 2.5, sucrose 2, Camphora 3, acrylic acid ester emulsion 5, hydrogenCalcium oxide 0.8, suitable quantity of water.
The manufacture method of described a kind of anti-sintering sawdust based biomass granule, comprises the following steps:
(1) sawdust is put in retort at a temperature of 450 DEG C, isolation air carbonization 20 minutes, be cooled to room temperature and add Camphor treeBrain, sucrose grind 40 minutes；
(2) being soaked 1 hour by refractory brick crumb 5-10wt% hydrochloric acid solution, washing is to neutral, and add water ultrasonic Treatment at 80 DEG C8 minutes, then soak 1 hour with 8-12wt% sodium hydroxide solution, washing is to neutral, and add water ultrasonic Treatment 8 points at 80 DEG CClock, is subsequently adding acrylic acid ester emulsion and grinds 20-30 minute, dries and prepares modified refractory brick bits；
(3) by bark, corn bran with the hot-water soak 10 hours of 60 DEG C, filter and put in fermentation vat, control fermentation vat temperature and exist30 DEG C, humidity is 50%, and fermentation process is after 20 hours, and addition modified refractory brick bits, bamboo bits, celery residue stir and continue to ferment10 days, it is cooled to room temperature and puts into pulverizer is crushed to 60 mesh；
(4) by step (1), the mixing of (3) material stirring, adding suitable quantity of water and other residual components stirring and evenly mixing, feeding is squeezed intoType machine, is squeezed into a diameter of 5mm, the cylindrical particle of a length of 3cm with the briquetting pressure of 45MPa, is dried, discharging.
The technical parameter index using the sawdust based biomass granule of present invention production is as follows:
(1) anti-dropping intensity: 99.12%；
(2) sulfur content: 0.382%, less than the standard of special low-sulfur coal 0.50%；
(3) calorific value: 25.89MJ/kg, in the range of high combustion value coal (calorific value is 24.01-27.00MJ/kg)；
(4) softening temperature of the ash of refined biometric matter granule: more than 1204 DEG C, (softening temperature is to belong to medium melted ash1100-1250 DEG C), this softening temperature can make refined biometric matter granule be applied to the industry smelting that temperature is higher, without drawingPlay the negative consequence such as ash melting, caking.