CN111060357A - Online collection device and method for inorganic elements in gas - Google Patents

Abstract

The invention relates to an on-line collecting device and a collecting method for inorganic elements in gas. The on-line collecting device for inorganic elements in the gas comprises: a box body; the dissolving liquid device is arranged in the box body and is used for supplying absorption liquid with preset concentration; the gas supply device is arranged outside the box body, is communicated with an external gas pipeline and is used for supplying gas with preset flow; and the absorption device is arranged in the box body and is respectively communicated with the solution device and the gas supply device so as to contain absorption liquid with a preset volume and absorb and dissolve inorganic elements in the gas in the absorption liquid to generate sample liquid to be detected. The invention can quickly collect inorganic elements in the gas, is convenient for measuring the concentration of the inorganic elements subsequently and reflects the process running state and the abnormal discharge condition of the external gas pipeline in time.

Description

Online collection device and method for inorganic elements in gas

Technical Field

The invention relates to the technical field of waste gas detection, in particular to an online collecting device and a detection method for inorganic elements in gas.

Background

The method is characterized in that the activity and the concentration of artificial radionuclides contained in the gaseous emissions generated in the operation process of nuclear facilities are radioactive and can be called as radioactive gases, the activity and the concentration of the artificial radionuclides belong to the key attention objects of nuclear security, facility operation and environmental protection monitoring, the critical nuclides in the gaseous emissions are quantitatively analyzed in time according to the requirements of national laws and regulations, at present, the monitoring of the gaseous emissions is generally implemented by adopting a filter membrane to automatically or manually and continuously accumulate and sample, and after decay for four days through a decay method/a false conformity method, the activities of total α and total β are measured by using a low-background aerosol radioactivity monitor.

Disclosure of Invention

The invention aims to provide an on-line collecting device and a collecting method for inorganic elements in gas, wherein the on-line collecting device can quickly collect the inorganic elements in the gas and is convenient for measuring the concentration of the inorganic elements in the gas subsequently.

In one aspect, the present invention provides an online collection device for inorganic elements in a gas, including: a box body; the dissolving liquid device is arranged in the box body and is used for supplying absorption liquid with preset concentration; the gas supply device is arranged outside the box body, is communicated with an external gas pipeline and is used for supplying gas with preset flow; and the absorption device is arranged in the box body and is respectively communicated with the solution device and the gas supply device so as to contain absorption liquid with a preset volume and absorb and dissolve inorganic elements in the gas in the absorption liquid to generate sample liquid to be detected.

According to one aspect of the invention, the absorption device comprises a base and a tank body covering the base, wherein a containing cavity is formed between the base and the tank body and is used for containing sample liquid to be detected.

According to one aspect of the invention, the base is provided with an air inlet and a liquid inlet/outlet which are communicated with the accommodating cavity, the air inlet is used for introducing air, the liquid inlet/outlet is used for leading in/out absorption liquid in the solution device, the tank body is provided with an air outlet, and the air outlet is used for discharging the gas which is not absorbed and dissolved in the absorption liquid.

According to one aspect of the invention, an aeration plate is arranged in the base, a plurality of micropores are arranged on the aeration plate, and the pore size of the micropores is 0.1 mm-0.5 mm.

According to one aspect of the invention, the aeration panel is inclined at a predetermined angle α relative to the horizontal plane, the air inlet is disposed below the aeration panel, and the liquid inlet/outlet is disposed above the aeration panel.

According to one aspect of the present invention, the outer surface of the can body is coated with a heating layer for heating the absorption liquid.

According to one aspect of the invention, the on-line collecting device for inorganic elements in the gas further comprises a gas heating module, and the gas heating module is arranged between the gas supply device and the absorption device.

According to one aspect of the invention, the on-line collecting device for inorganic elements in gas further comprises a temperature detecting device, the tank body is further provided with a first mounting opening communicated with the accommodating cavity, and the temperature detecting device is placed in the first mounting opening and used for detecting the temperature of the sample liquid to be detected.

According to one aspect of the invention, the on-line collecting device for inorganic elements in gas further comprises a liquid level detector, the tank body is further provided with a second mounting hole communicated with the accommodating cavity, and the liquid level detector is placed in the second mounting hole and used for detecting the liquid level height of the sample liquid to be detected.

According to one aspect of the invention, the number of the absorption devices is two, wherein the air outlet of one absorption device is communicated with the air inlet of the other absorption device through a pipeline, the air inlet of one absorption device is used for introducing gas, and the air outlet of the other absorption device is used for discharging the gas which is not absorbed and dissolved in the absorption liquid.

According to an aspect of the present invention, a pressure detecting means and a flow rate detecting means are provided between the gas supplying means and the absorbing means.

According to an aspect of the present invention, the apparatus for collecting inorganic elements in a gas on-line further comprises: the electric control unit is arranged in the box body and is electrically connected with the gas supply device; and the electromagnetic valve is electrically connected with the electric control unit and is at least respectively communicated with the absorption device and the dissolving liquid device.

In another aspect, the present invention further provides an online collecting method of inorganic elements in a gas, which is applied to the online collecting device of inorganic elements in a gas, and the online collecting method of inorganic elements comprises: communicating a dissolving liquid device with an absorption device through a pipeline; one end of the gas supply device is communicated with an external gas pipeline, and the other end of the gas supply device is communicated with the absorption device; and starting the gas supply device and the solution device to introduce the absorption liquid in the solution device into the absorption device and absorb and dissolve the inorganic elements in the gas into the absorption liquid to generate the sample liquid to be detected.

The invention provides an on-line collecting device and a collecting method for inorganic elements in gas, wherein an absorption device is arranged in a box body and is communicated with a dissolving liquid device for supplying absorption liquid and a gas supply device for supplying gas, so that the inorganic elements in the gas can be absorbed and dissolved in the absorption liquid, the inorganic elements in the gas can be rapidly collected, the concentration of the inorganic elements can be conveniently measured subsequently, and the process running state and the abnormal discharge condition of an external gas pipeline can be reflected in time.

Drawings

Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. The figures are not drawn to scale.

FIG. 1 is a schematic structural diagram of an on-line collecting device for inorganic elements in a gas according to an embodiment of the present invention;

FIG. 2 is a schematic of the topology of the on-line collection device for inorganic elements shown in FIG. 1;

FIG. 3 is a schematic view showing a longitudinal sectional structure of an absorption apparatus for an inorganic element in the on-line collecting apparatus shown in FIG. 1;

FIG. 4 is a schematic view showing a back structure of the on-line collecting apparatus for inorganic elements shown in FIG. 1;

FIG. 5 is a schematic view of the on-line collecting apparatus for inorganic elements shown in FIG. 1 with a front panel removed;

fig. 6 is a flow chart of a method for collecting inorganic elements in gas on line according to an embodiment of the present invention.

Description of reference numerals:

10-a box body; 1-a front panel; 2-a display screen; 3-a sampling port; 4-a door body; 5-a heat dissipation fan; 6-a rear panel; 7-a first entrance door; 8-a second entrance door; 9-heat dissipation holes; 10 a-a separator; 11-a first containing cavity; 12-a second containing cavity; 13-a third containing chamber;

20-a solution device; 21-a syringe pump;

30-an absorption device; 31-a base; an O-containing cavity; 311-an air inlet; 312-liquid inlet/outlet; 321-an air outlet; 314-an aeration plate; 32-can body; 322-a first mounting port; 323-a second mounting port; 324-a heating layer; 325-temperature detection means; 326-bubble detection means; 40-a gas supply; 41-an air pump; 42-a pressure maintaining valve; 43-a solenoid valve; 44-a pressure gauge;

50-an electronic control unit; 61-pressure detection means; 62-a flow detection device; 63-a gas heating module; 71-a cleaning device; 72-a waste liquid device; 80-a solenoid valve; 90-sampling device.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention. In the drawings and the following description, well-known structures and techniques, at least in part, are not shown in order to avoid unnecessarily obscuring the present invention; also, the size of the region structures may be exaggerated for clarity. Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

The following description is given with reference to the orientation words as shown in the drawings, and is not intended to limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

For better understanding of the present invention, the following describes an online collecting device and a collecting method for inorganic elements in gas according to an embodiment of the present invention with reference to fig. 1 to 6.

The gas in the conduit is typically in an aerosol state. In the online analysis of the aerosol mass spectrum, the sensitivity fluctuation of an Inductively Coupled Plasma mass spectrometry (ICP-MS) is large due to the fluctuation of the aerosol sample injection flow. Furthermore, there are currently no internationally certified quality standard aerosol particles of known concentration and composition due to aerosol instability. Therefore, the online analysis of the aerosol mass spectrum cannot be quantitatively analyzed.

Therefore, according to the online collection device for inorganic elements in gas, provided by the invention, the inorganic elements in the gas to be detected are conveyed into the absorption liquid to be absorbed and dissolved, so that the sample liquid to be detected is generated. After the concentration of the inorganic elements reaches the detection limit of ICP-MS, the collected inorganic elements can be quantitatively analyzed by ICP-MS.

Referring to fig. 1 and 2 together, an embodiment of the present invention provides an apparatus for collecting inorganic elements in a gas on-line, including: atank 10, asolution device 20 disposed in thetank 10, anabsorption device 30, and agas supply device 40 disposed outside thetank 10.

A dissolvingliquid device 20 is provided in thetank 10 for supplying an absorption liquid having a predetermined concentration. Optionally, the absorption liquid is a nitric acid solution, which is capable of dissolving the inorganic elements carried in the gas to be detected.

Thegas supply device 40 is disposed outside thecase 10, and thegas supply device 40 is communicated with an external gas pipe for supplying a predetermined flow rate of gas. Thegas supply device 40 comprises apressure gauge 44, anelectromagnetic valve 43, asuction pump 41 and apressure stabilizing valve 42 which are communicated in sequence, wherein thesuction pump 41 continuously pumps gas in an external gas pipeline, and the gas is output at a stable flow rate after being subjected to pressurization and pressure stabilization regulation.

Theabsorption device 30 is disposed in thebox 10, and theabsorption device 30 is respectively communicated with thesolution device 20 and thegas supply device 40 to contain a predetermined volume of absorption liquid and absorb and dissolve inorganic elements in the gas in the absorption liquid to generate a sample liquid to be measured. Optionally, the dissolvingsolution device 20 introduces the absorption solution into theabsorption device 30 through thesyringe pump 21, so as to ensure the accuracy of the introduction volume of the absorption solution and facilitate quantitative analysis.

According to the on-line collection device for inorganic elements in gas, provided by the embodiment of the invention, theabsorption device 30 is arranged in thebox body 10, and theabsorption device 30 is communicated with the dissolvingliquid device 20 for supplying absorption liquid and thegas supply device 40 for supplying gas, so that the inorganic elements in the gas can be absorbed and dissolved in the absorption liquid, the inorganic elements in the gas can be collected in real time and rapidly, the concentration of the inorganic elements can be conveniently measured subsequently, and the process running state and the abnormal emission condition of an external gas pipeline can be reflected in time.

The specific structure of the on-line collecting device for inorganic elements in the gas is described in further detail below with reference to the accompanying drawings.

Referring to fig. 3, theabsorption device 30 includes abase 31 and atank body 32 covering thebase 31, and a containing cavity O is formed between thebase 31 and thetank body 32 and is used for containing the sample liquid to be measured.

Specifically, thebase 31 is provided with agas inlet 311 and a liquid inlet/outlet 312 which are communicated with the accommodating chamber O, thegas inlet 311 is used for introducing gas, and the liquid inlet/outlet 312 is used for introducing/discharging the absorption liquid in thesolution device 20. Thetank body 32 is provided with anair outlet 321, and theair outlet 321 is used for discharging gas which is not absorbed and dissolved in the absorption liquid. Optionally, thegas outlet 321 is communicated with an external gas pipeline to recover residual gas to prevent the residual gas from polluting the environment.

In order to improve the absorption rate of theabsorption device 30 to inorganic elements in the gas, anaeration plate 314 is further arranged in thebase 31, a plurality of micropores are arranged on theaeration plate 314, and the pore size of the micropores is 0.1 mm-0.5 mm. Optionally, theaeration plate 314 is made of an acid-resistant material, such as ceramic. The micropore aperture of the aeration plate is small, and the micropores are uniformly distributed on theaeration plate 314, so that large bubbles entering the gas in the accommodating cavity O can be diffused into small bubbles, and the diffusion uniformity of the gas is improved.

Optionally, theaeration plate 314 is disposed at an angle α with respect to the horizontal plane, optionally, the angle α is 1 ° to 3 °, optionally, α is 2 °, so as to smoothly discharge the absorption liquid from the surface of theaeration plate 314 and prevent the absorption liquid from blocking the micropores.

Theair inlet 311 is disposed below theaeration plate 314, and the liquid inlet/outlet 312 is disposed above theaeration plate 314. Thegas inlet 311 and the liquid inlet/outlet 312 are arranged so that the gas is diffused from large bubbles into small bubbles and then is absorbed and dissolved in the absorption liquid, thereby improving the solubility of the gas.

Further, apressure detection device 61 and a flowrate detection device 62 are provided between thegas supply device 40 and theabsorption device 30. Thepressure detecting means 61 and the flow rate detecting means 62 respectively display the pressure and the flow rate of the gas, and ensure that the gas is supplied to the absorbing means 30 at a predetermined flow rate and a predetermined pressure, ensuring accurate metering of the gas.

In some embodiments, the outer surface of thecan body 32 of theabsorbent device 30 is coated with aheating layer 324 for heating the absorbent liquid. As shown in fig. 2, theheating layer 324 may be a heating pipe coated on the outer surface of thetank body 32, and after the absorption liquid is heated, the molecular movement speed of the absorption liquid is increased, so that the dissolution efficiency of the inorganic element in the absorption liquid is improved, and the collection efficiency of the inorganic element is further improved.

In some embodiments, agas heating module 63 is further disposed between thegas supply device 40 and theabsorption device 30, and is used for heating the gas, so as to accelerate the molecular movement of the gas, improve the dissolution efficiency of the inorganic element in the absorption liquid, and further improve the collection efficiency of the inorganic element.

In order to accurately grasp and control the temperature of the sample liquid to be detected, the online collection device for inorganic elements in gas provided by the embodiment of the invention further comprises atemperature detection device 325, thetank body 32 is further provided with a first mountingport 322 communicated with the accommodating cavity O, and thetemperature detection device 325 is placed in the first mountingport 322 and is used for detecting the temperature of the sample liquid to be detected. As shown in fig. 2, thetemperature detecting device 325 may be any device capable of measuring temperature, such as a thermometer or a temperature sensor, so as to ensure that the dissolution rate of the gas can be quantitatively analyzed.

In addition, the online collecting device for inorganic elements in gas provided by the embodiment of the present invention further includes a liquid level detector (not shown in the figure), thetank body 32 is further provided with asecond installation port 323 communicated with the accommodating cavity O, and the liquid level detector is placed in thesecond installation port 323 and is used for detecting the liquid level height of the sample liquid to be detected. In the process that gas which is not dissolved in the absorption liquid is discharged outside through thegas outlet 321 for a long time, part of the absorption liquid may be taken away to reduce the absorption liquid in theabsorption device 30, so that the dissolution rate of the inorganic elements is reduced, the liquid level detector can timely detect the variation of the liquid level height, and the absorption liquid lost by theabsorption device 30 is automatically replenished by thesolution device 20.

In order to further improve the solubility of the inorganic elements in the absorption liquid of theabsorption devices 30, as shown in fig. 2, in some embodiments, the number of theabsorption devices 30 is two, wherein thegas outlet 321 of oneabsorption device 30 is communicated with thegas inlet 311 of theother absorption device 30 through a pipeline, thegas inlet 311 of oneabsorption device 30 is used for introducing gas, and thegas outlet 321 of theother absorption device 30 is used for discharging gas which is not absorbed and dissolved in the absorption liquid.

Thereby, the twoabsorption devices 30 are communicated with each other, and the gas supplied through thegas supply device 40 is dissolved by two-stage absorption of the twoabsorption devices 30, thereby increasing the dissolution rate of the inorganic element in the absorption liquid.

In addition, the on-line collecting device for inorganic elements in gas provided by the embodiment of the present invention further includes asampling device 90 disposed in thebox 10, wherein thesampling device 90 is communicated with the liquid inlet/outlet 312 of theabsorption device 30 to recover the sample liquid to be tested. When the inorganic elements are completely collected, thesampling device 90 can automatically sample the inorganic elements.

In the automatic sampling, as shown in fig. 2, abubble detector 326 may be provided at theair outlet 321 of theabsorber 30 in order to ensure that the sample liquid to be measured is completely recovered to thesampling device 90. When thebubble detector 326 detects the bubble at theair outlet 321, it can be determined that the sample liquid to be measured is completely taken out.

Referring again to fig. 2, in order to ensure that each measurement is not affected by the previous measurement, the inorganic element on-line collecting apparatus further includes acleaning apparatus 71 and awaste liquid apparatus 72 communicating with the absorbingapparatus 30, and the cleaning apparatus 70 supplies ultrapure water. After the recovery of the sample liquid, theabsorption apparatus 30 and its downstream components are rinsed with ultrapure water in the rinsing apparatus 70, and the rinsed waste liquid is introduced into thewaste liquid apparatus 72.

In order to realize the function of automatically collecting inorganic elements, the online collecting device for inorganic elements in gas provided by the invention further comprises anelectronic control unit 50 arranged in thebox body 10, wherein theelectronic control unit 50 is electrically connected with thegas supply device 40. Theelectronic control unit 50 controls the opening or closing of thesuction pump 41 based on the pressure value detected by thepressure gauge 44 in thegas supply device 40.

Specifically, if the pressure of the external gas pipeline can ensure the normal supply of the gas, theair pump 41 is automatically turned off, and the original gas of the gas pipeline is directly input into theabsorption device 30 for collection and subsequent analysis after being stabilized and stabilized in pressure. If the pressure of the gas pipeline is low and normal test cannot be completed, theelectronic control unit 50 will automatically start theair pump 41 to perform pressurization.

In addition, the online collecting device for inorganic elements in gas provided by the invention further comprises anelectromagnetic valve 80 electrically connected with theelectronic control unit 50, wherein theelectromagnetic valve 80 is at least respectively communicated with theabsorption device 30 and the dissolvingliquid device 20. When the on-line inorganic element collecting device further comprises asampling device 90, acleaning device 71 and awaste liquid device 72, theelectromagnetic valve 80 is also communicated with thecleaning device 71, thewaste liquid device 72 and thesampling device 90.

Alternatively, theelectromagnetic valve 80 is a six-way electromagnetic valve, and theelectromagnetic valve 80 is respectively communicated with the twoabsorption devices 30, thesolution device 20, thecleaning device 71, thewaste liquid device 72 and thesampling device 90. When in measurement, firstly, thedissolving solution device 20 is communicated with theabsorption device 30, theelectronic control unit 50 controls theelectromagnetic valve 80 to open the switch valves of theabsorption device 30 and thedissolving solution device 20, and the absorption solution in thedissolving solution device 20 is introduced into theabsorption device 30 through theinjection pump 21; then, thegas supply device 40 and theabsorption device 30 which are communicated with the external gas pipeline are communicated, the inorganic elements in the gas are collected, and the inorganic elements are absorbed and dissolved in the absorption liquid to generate the sample liquid to be measured. After the gas collection is finished, theelectronic control unit 50 controls theelectromagnetic valve 80 to close the on-off valves of theabsorption device 30 and thesolution device 20, and starts the on-off valve of thesampling device 90. After the sampling is completed, the on-off valve of thesampling device 90 is closed, the on-off valves of thecleaning device 71 and thewaste liquid device 72 are opened, theabsorption device 30 and the components and the like downstream thereof are rinsed with ultrapure water in thecleaning device 71, and the rinsed waste liquid flows into thewaste liquid device 72. After the completion of the flushing, the on-off valves of thecleaning device 71 and thewaste liquid device 72 are closed, and the next gas collection cycle is performed.

Referring to fig. 1, 4 and 5, thecase 10 includes afront panel 1 and a rear panel 6. Thefront panel 1 is provided with adisplay screen 2 for displaying detection parameters of inorganic elements in an online collection process, such as gas pressure, flow and absorption liquid volume, so that the inorganic elements can be accurately quantified. Still be provided withsample connection 3 on thefront panel 1, be provided with the flip lid on thesample connection 3, flip lid is lifted and can be placed or take out the appearance liquid that awaits measuring throughsample connection 3. Thefront panel 1 is also provided with a door 4, and the dissolvingliquid device 20 can be placed or taken out by opening the door 4.

The rear panel 6 is further provided with a first inlet door 7 and a second inlet door 8, the gas in the external gas pipeline passes through the first inlet door 7 to be communicated with theabsorption device 30, and thewaste liquid device 72 outside thebox body 10 is communicated with theabsorption device 30 through a pipeline passing through the first inlet door 7. The second entrance door 8 is provided with a power switch and the like, and the power supply can be cut off after the measurement is finished. The dotted line position above the rear panel 6 is a circuit structure layout area including theelectronic control unit 50, the heat dissipation holes 9 are further formed below the rear panel, the heat dissipation fan 5 is arranged at the top of thebox body 10, and the heat dissipation fan 5 and the heat dissipation holes 9 form air convection for dissipating heat of the inorganic element online collection device. In addition, the bottom of thebox 10 may be designed with rollers for easy transportation.

In order to discharge the components of the online collecting device for inorganic elements in the gas in thebox 10 orderly and save space, apartition plate 10a is arranged in thebox 10, and thepartition plate 10a divides the inner space of thebox 10 into at least a firstaccommodating cavity 11, a secondaccommodating cavity 12 and a thirdaccommodating cavity 13. Alternatively, theelectronic control unit 50, theabsorption device 30, thesolenoid valve 80, thesyringe pump 21, and the like are placed in the first containingchamber 11, thegas heating module 63, thepressure detecting device 61, theflow meter 62, and the like are placed in the second containingchamber 12, and the dissolvingliquid device 20 and the cleaning device 70 are placed in the third containingchamber 13.

Thus, on the one hand, thebox 10 provides good environmental and quantitative data collection for inorganic elements; on the other hand, thecase 10 places thedissolving solution device 20, theabsorption device 30 and other parts together, so that the structure is compact, the occupied space is small, and the popularization and the use are facilitated.

Referring to fig. 6, an embodiment of the present invention further provides an online collection method for an inorganic element in a gas, which is applied to the aforementioned online collection device for an inorganic element in a gas, and the online collection method for an inorganic element in a gas includes:

step S1: the dissolvingliquid device 20 is communicated with theabsorption device 30 through a pipeline;

step S2: one end of thegas supply device 40 is communicated with an external gas pipeline, and the other end is communicated with theabsorption device 30;

step S3: thegas supply device 40 and thesolution device 30 are started to introduce the absorption liquid in thesolution device 20 into theabsorption device 30, and the inorganic elements in the gas are absorbed and dissolved in the absorption liquid to generate the sample liquid to be measured.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (13)

Translated fromChinese

1.一种气体中的无机元素在线收集装置，其特征在于，包括：1. an inorganic element online collection device in a gas, is characterized in that, comprises:箱体(10)；box (10);溶解液装置(20)，设置于所述箱体(10)内，所述溶解液装置(20)用于供应具有预定浓度的吸收液；a dissolving liquid device (20), arranged in the box body (10), the dissolving liquid device (20) is used for supplying an absorbing liquid with a predetermined concentration;气体供应装置(40)，设置于所述箱体(10)外，所述气体供应装置(40)与外界气体管道连通，用于供应预定流量的气体；a gas supply device (40), arranged outside the box body (10), the gas supply device (40) is communicated with an external gas pipeline for supplying a predetermined flow of gas;吸收装置(30)，设置于所述箱体(10)内，所述吸收装置(30)分别与所述溶解液装置(20)和所述气体供应装置(40)连通，以容纳预定体积的所述吸收液，并将所述气体中的无机元素吸收溶解在所述吸收液中生成待测样液。An absorption device (30) is arranged in the casing (10), and the absorption device (30) is communicated with the dissolving liquid device (20) and the gas supply device (40) respectively, so as to accommodate a predetermined volume of The absorbing liquid, and the inorganic elements in the gas are absorbed and dissolved in the absorbing liquid to generate the sample liquid to be tested.2.根据权利要求1所述的无机元素在线收集装置，其特征在于，所述吸收装置(30)包括底座(31)和盖合于所述底座(31)的罐体本体(32)，所述底座(31)与所述罐体本体(32)之间形成有容纳腔(O)，所述容纳腔(O)用于容纳所述待测样液。2 . The device for collecting inorganic elements online according to claim 1 , wherein the absorption device ( 30 ) comprises a base ( 31 ) and a tank body ( 32 ) covered with the base ( 31 ). An accommodating cavity (O) is formed between the base (31) and the tank body (32), and the accommodating cavity (O) is used for accommodating the sample liquid to be tested.3.根据权利要求2所述的无机元素在线收集装置，其特征在于，所述底座(31)上设置有与所述容纳腔(O)连通的进气口(311)和进液/出液口(312)，所述进气口(311)用于通入所述气体，所述进液/出液口(312)用于导入/导出所述溶解液装置(20)中的所述吸收液，所述罐体本体(32)上设置有出气口(321)，所述出气口(321)用于排放未吸收溶解于所述吸收液的气体。3. The device for collecting inorganic elements online according to claim 2, characterized in that, the base (31) is provided with an air inlet (311) and a liquid inlet/outlet that communicate with the accommodating cavity (O) an inlet (312), the air inlet (311) is used to introduce the gas, and the liquid inlet/outlet (312) is used to import/export the absorption in the dissolving liquid device (20) The tank body (32) is provided with an air outlet (321), and the air outlet (321) is used to discharge the gas that is not absorbed and dissolved in the absorbing liquid.4.根据权利要求3所述的无机元素在线收集装置，其特征在于，所述底座(31)内还设置有曝气板(314)，所述曝气板(314)上设置有多个微孔，所述微孔的孔径大小为0.1mm～0.5mm。4 . The device for collecting inorganic elements online according to claim 3 , wherein an aeration plate ( 314 ) is further arranged in the base ( 31 ), and a plurality of micro-organisms are arranged on the aeration plate ( 314 ). 5 . The pore size of the micropores is 0.1 mm to 0.5 mm.5.根据权利要求4所述的无机元素在线收集装置，其特征在于，所述曝气板(314)相对于水平面呈预定角度α倾斜设置，所述进气口(311)设置于所述曝气板(314)的下方，所述进液/出液口(312)设置于所述曝气板(314)的上方。5 . The device for collecting inorganic elements online according to claim 4 , wherein the aeration plate ( 314 ) is inclined at a predetermined angle α with respect to the horizontal plane, and the air inlet ( 311 ) is arranged in the aeration plate ( 311 ) Below the air plate (314), the liquid inlet/outlet (312) is arranged above the aeration plate (314).6.根据权利要求2所述的无机元素在线收集装置，其特征在于，所述罐体本体(32)的外表面包覆有加热层(324)，用于加热所述吸收液。6. The device for collecting inorganic elements online according to claim 2, characterized in that, the outer surface of the tank body (32) is covered with a heating layer (324) for heating the absorbing liquid.7.根据权利要求1所述的无机元素在线收集装置，其特征在于，还包括气体加热模块(63)，所述气体加热模块(63)设置于所述气体供应装置(40)与所述吸收装置(30)之间。7 . The device for collecting inorganic elements online according to claim 1 , further comprising a gas heating module ( 63 ), wherein the gas heating module ( 63 ) is arranged between the gas supply device ( 40 ) and the absorption device. 8 . between the devices (30).8.根据权利要求2所述的无机元素在线收集装置，其特征在于，还包括温度检测装置(325)，所述罐体本体(32)上还设置有与所述容纳腔(O)连通的第一安装口(322)，所述温度检测装置(325)放置于所述第一安装口(322)，用于探测所述待测样液的温度。8 . The device for collecting inorganic elements online according to claim 2 , further comprising a temperature detection device ( 325 ), and the tank body ( 32 ) is further provided with a device that communicates with the accommodating cavity (O). 9 . A first installation port (322), and the temperature detection device (325) is placed in the first installation port (322) for detecting the temperature of the sample liquid to be tested.9.根据权利要求2所述的无机元素在线收集装置，其特征在于，还包括液位探测器，所述罐体本体(32)上还设置有与所述容纳腔(O)连通的第二安装口(323)，所述液位探测器放置于所述第二安装口(323)，用于探测所述待测样液的液面高度。9 . The device for collecting inorganic elements online according to claim 2 , further comprising a liquid level detector, and the tank body ( 32 ) is further provided with a second connection communicating with the accommodating cavity (O). 10 . An installation port (323), the liquid level detector is placed in the second installation port (323) for detecting the liquid level of the sample liquid to be tested.10.根据权利要求2至9任一项所述的无机元素在线收集装置，其特征在于，所述吸收装置(30)的数量为两个，其中一个所述吸收装置(30)的所述出气口(321)与另一个所述吸收装置(30)的所述进气口(311)通过管路连通，其中一个所述吸收装置(30)的所述进气口(311)用于通入所述气体，另一个所述吸收装置(30)的所述出气口(321)用于排放未吸收溶解于所述吸收液的气体。10. The device for collecting inorganic elements online according to any one of claims 2 to 9, wherein the number of the absorption devices (30) is two, wherein the outlet of one of the absorption devices (30) The air port (321) is communicated with the air inlet (311) of the other absorption device (30) through a pipeline, and the air inlet (311) of one of the absorption devices (30) is used to pass through For the gas, the gas outlet (321) of the other absorption device (30) is used to discharge the gas that is not absorbed and dissolved in the absorption liquid.11.根据权利要求1所述的无机元素在线收集装置，其特征在于，所述气体供应装置(40)与所述吸收装置(30)之间设置有压力检测装置(61)和流量检测装置(62)。11. The device for collecting inorganic elements online according to claim 1, characterized in that a pressure detection device (61) and a flow detection device ( 62).12.根据权利要求11所述的无机元素在线收集装置，其特征在于，还包括：12. The device for collecting inorganic elements online according to claim 11, further comprising:电控单元(50)，设置于所述箱体(10)内并与所述气体供应装置(40)电连接；an electric control unit (50), arranged in the box body (10) and electrically connected to the gas supply device (40);电磁阀门(80)，与所述电控单元(50)电连接，所述电磁阀门(80)至少分别与所述吸收装置(30)和所述溶解液装置(20)连通。An electromagnetic valve (80) is electrically connected to the electronic control unit (50), and the electromagnetic valve (80) is communicated with at least the absorption device (30) and the dissolving liquid device (20) respectively.13.一种气体中的无机元素在线收集方法，应用于如权利要求1至12任一项所述的气体中的无机元素在线收集装置，其特征在于，所述无机元素在线收集方法包括：13. A method for online collection of inorganic elements in gas, applied to the device for online collection of inorganic elements in gas according to any one of claims 1 to 12, wherein the method for online collection of inorganic elements comprises:将溶解液装置(20)通过管路与所述吸收装置(30)连通；connecting the dissolving liquid device (20) with the absorption device (30) through a pipeline;将气体供应装置(40)的一端与外界气体管道连通，另一端与吸收装置(30)连通；One end of the gas supply device (40) is communicated with the external gas pipeline, and the other end is communicated with the absorption device (30);启动所述气体供应装置(40)和所述溶解液装置(20)，以将所述溶解液装置(20)中的吸收液导入所述吸收装置(30)中，并将气体中的无机元素吸收溶解于所述吸收液中生成待测样液。The gas supply device (40) and the dissolving liquid device (20) are activated to introduce the absorption liquid in the dissolving liquid device (20) into the absorption device (30), and the inorganic elements in the gas are discharged Absorb and dissolve in the absorbing liquid to generate the sample liquid to be tested.

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