CN209878413U - Atmospheric aerosol on-line trapping and chemical component detection device - Google Patents
Atmospheric aerosol on-line trapping and chemical component detection device Download PDFInfo
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- CN209878413U CN209878413U CN201920214225.5U CN201920214225U CN209878413U CN 209878413 U CN209878413 U CN 209878413U CN 201920214225 U CN201920214225 U CN 201920214225U CN 209878413 U CN209878413 U CN 209878413U
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Abstract
The utility model provides an online entrapment of atmospheric aerosol and chemical composition detection device belongs to the environmental detection technology field, and this method is after detaching soluble gas with environmental atmosphere ration, carries out the entrapment of aerosol with the atmosphere in the aerosol trap, and the entrapment mode adopts the steam entrapment, makes steam wrap up in the cover to the aerosol, and the cooling makes the aerosol gather into the liquid drop and converges and collect to carry out the process of online qualitative and quantitative chemical composition detection to the liquefied aerosol who collects. The utility model discloses an atmospheric environment monitoring is applied to ion chromatography technique, possesses laboratory detecting instrument's high accuracy and on-line monitoring instrument's continuous automatic maneuverability simultaneously. The chemical components are detected by a multi-channel ion chromatography online detector, and the detection data is uploaded to an atmospheric environment management platform in time through a wireless communication system of the multi-channel ion chromatography online detector, so that the atmospheric pollution is monitored and prevented in real time.
Description
Technical Field
The utility model belongs to the technical field of the environment measuring technique and specifically relates to an online entrapment of atmospheric aerosol and chemical composition detection device.
Background
For atmospheric aerosol collection and chemical composition analysis, the traditional analysis method is to collect particulate matter through a filter membrane, then send to a laboratory to weigh, dissolve, extract and analyze using ion chromatography. The method has the defects of large sampling error of the particles, easy loss of sample storage, time and labor consumption, incapability of reflecting the high-frequency change rule of water-soluble components in the atmospheric particles and the like.
SUMMERY OF THE UTILITY MODEL
The technical task of the utility model is to solve the deficiency of the prior art, and provide an online entrapment of atmospheric aerosol and chemical composition detection device.
The technical scheme of the utility model following mode realization, the utility model discloses an online entrapment of atmosphere aerosol and chemical composition detection device is with environment atmosphere ration detach soluble gas after, carries out the entrapment of aerosol with the atmosphere in the aerosol trap, and the entrapment mode adopts the steam entrapment, makes steam wrap up in to the aerosol and covers, and the cooling makes the aerosol gather into the liquid drop and converges and collect to carry out the process of online chemical composition qualitative and quantitative determination to the liquefied gas sol who collects.
The device respectively and quantitatively introduces ambient atmosphere and absorption liquid into a wet static circular diffusion corrosion device, and the absorption liquid quantitatively absorbs soluble components in the ambient atmosphere in the wet static circular diffusion corrosion device in a membrane separation mode of a gas selective permeable membrane, and the absorbed absorption liquid is collected;
the environmental atmosphere separated and absorbed by the film is conveyed to an aerosol catcher to catch the atmospheric aerosol, the catching is carried out by utilizing the difference of the diffusion speeds of the atmosphere and the aerosol, the aerosol is wrapped by a large amount of water vapor under the action of the water vapor sprayed by a vapor generator when entering the aerosol catcher, liquid drops are quickly formed in a cooling state to be acquired and caught, and liquefied gas sol sample liquid to be detected is obtained after the catching,
and respectively or together feeding the absorbed absorption liquid and the liquefied aerosol sample liquid to be detected into a multi-channel ion chromatography online detector for chemical component analysis, thus forming a real-time atmospheric aerosol online trapping and chemical component detection system.
The absorption liquid adopts 1-3% hydrogen peroxide, the membrane power of the gas selective permeable membrane in the wet static circular diffusion corrosion device adopts hydrogen peroxide and reaction power which can generate oxidation-reduction reaction with the hydrogen peroxide in the environmental atmosphere, and the soluble gas and pollutants in the environmental atmosphere can be absorbed completely without damage.
The gas selective permeability liquid film in the wet static circular diffusion corrosion device adopts a liquid film.
The steam in the steam generator is derived from pure water; the control parameters of the steam produced by the steam generator are: the steam output is saturated steam with the temperature of 90-110 ℃, the temperature of 0.02-0.03MPa and the pressure.
The cooling of the aerosol in the aerosol catcher after being coated by a large amount of water vapor adopts vacuum cooling, the working state of a vacuum pump is standard atmospheric pressure, and the flow rate is 16.7ml/min at 20 ℃.
An on-line atmospheric aerosol trapping and chemical component detecting device comprises a wet static circular diffusion erosion device (1), an aerosol trap (2) and a chemical component analysis system (5),
an ambient atmosphere quantitative introduction device is arranged at the upstream of the wet static circular diffusion etcher (1), the ambient atmosphere quantitative introduction device is communicated with a gas inlet (104) of the wet static circular diffusion etcher,
a gas selective permeable membrane is arranged in a wet static circular diffusion etcher (1),
the absorption liquid stored in the absorption liquid storage bottle (106) is conveyed into the wet static circular diffusion corrosion apparatus (1) through an absorption liquid conveying pump (108) and a pipeline, the absorption liquid and the atmosphere carry out substance exchange between membranes through a gas selective permeable membrane, and the absorption liquid absorbs the soluble components of the atmosphere; the absorption liquid is connected with an absorption liquid discharge pipeline from the downstream of the wet static circular diffusion corrosion device (1), and the absorption liquid is discharged from the absorption liquid discharge pipeline;
the atmosphere of the wet static circular diffusion corrosion device (1) is communicated to the aerosol catcher (2) through a gas outlet pipe (118) of the wet static circular diffusion corrosion device connected with the downstream;
the inner cavity of the aerosol catcher (2) is additionally provided with steam at the atmospheric spraying position for spraying mixed flow, the steam wraps the aerosol,
the tail end of the aerosol catcher (2) is provided with a cooling system which cools the vapor coated aerosol in the aerosol catcher, the tail end of the aerosol catcher (2) is connected with a liquefied aerosol sample liquid collecting device to be tested,
the liquefied aerosol sample liquid to be detected confluence collecting device is connected with a multi-channel ion chromatography on-line detector (508) through an automatic sampling device (505) for on-line detection.
The ambient atmosphere quantitative introduction device is composed of an air particle cutter inlet (101), an air particle cutter (102) and an air particle cutter outlet (103), and is provided with an atmospheric flow sensor which monitors the flow speed of the ambient atmosphere quantitative introduction device for introducing the atmosphere to be a constant speed;
steam is sprayed into the mixed flow and is provided by a steam generator (3), the steam generator (3) is provided with a pure water storage bottle (304), the pure water storage bottle (304) is connected with a pure water delivery pump inlet pipe (303), a pure water delivery pump (305) is arranged on a pipeline of the pure water delivery pump inlet pipe (303), the pure water delivery pump inlet pipe (303) is connected to the steam generator (3) through a steam generator liquid phase inlet pipe (302), the steam generator (3) is provided with a steam generator electric heating control system (306), the steam generator (3) delivers steam to an inner cavity of an aerosol trap (2) to be mixed with atmosphere through a steam generator outlet pipe and a combined piece (301), and the aerosol is wrapped;
the cooling system adopts vacuum cooling, the vacuum cooling is configured with a vacuum generator system, the vacuum generator system (4) is connected to the tail end of the aerosol trap (2) through an aerosol trap vacuum inlet connecting pipe (401), and the aerosol trap vacuum inlet connecting pipe (401) is sequentially connected with a gas flow sensor (402), a vacuum meter (403), a vacuum pump inlet (404), a vacuum pump and a vacuum pump outlet (405); the vacuum pump provides vacuum cooling for the inner cavity of the aerosol catcher (2);
the liquefied aerosol sample liquid collection device that awaits measuring is connected by sample import (501) to be measured, liquefied aerosol sample connecting valve (502) and liquefied aerosol connecting pipe (506) and is formed, disposes sample export (503) (504) that awaits measuring on the liquefied aerosol sample connecting valve (502) that awaits measuring, liquefied aerosol connecting pipe (506) are connected to on autoinjection device (505), and autoinjection device (505) are connected to on-line detector (508) of multichannel ion chromatography.
The absorption liquid is connected with an absorption liquid discharge pipeline from the downstream of the wet static circular diffusion corrosion device (1), and the absorption liquid is discharged from the absorption liquid discharge pipeline; the absorption liquid is discharged and converged to a soluble gas absorption liquid storage bottle (117) through a wet static circular diffusion corrosion device absorption liquid discharge port (114), a wet static circular diffusion corrosion device absorption liquid discharge port control valve (116) and a wet static circular diffusion corrosion device absorption liquid discharge pipe (115);
the soluble gas absorption liquid storage bottle (117) connects the soluble gas absorption liquid to an automatic sampling device (505), and the soluble gas absorption liquid and the liquid gas sol sample to be detected are respectively or together fed into a multi-channel ion chromatography online detector for chemical composition analysis.
The application of ion chromatography in atmospheric environment monitoring of chemical components; and the use of a steam generator in an aerosol trap.
Compared with the prior art, the utility model produced beneficial effect is:
the utility model discloses an online entrapment of atmospheric aerosol and chemical composition detection device is applied to atmospheric environment monitoring with ion chromatography technique, possesses the high accuracy of laboratory detecting instrument and the continuous automatic maneuverability of on-line monitoring instrument simultaneously.
The gas sampling device is a wet static circular diffusion corrosion device, and a gas selective permeability membrane technology is adopted, so that gaseous pollutants in the air can pass through the membrane to enter the absorption liquid channel and react with hydrogen peroxide. The dynamic principle of the reaction process is oxidation-reduction reaction, and the nondestructive complete absorption of gaseous pollutants is ensured. The soluble gas can be quantitatively absorbed in the wet static circular diffusion etcher.
By utilizing the difference of the diffusion speeds of gas and aerosol, when the aerosol completely enters the aerosol trap from the inlet of the aerosol trap, the aerosol is coated by a large amount of water vapor under the action of the water vapor sprayed by the vapor generator, liquid drops are quickly formed in a self-cooling state, and the liquid drops are obtained from the outlet of a sample to be detected of the aerosol trap;
the chemical components are detected by a multi-channel ion chromatography online detector, and the detection data is uploaded to an atmospheric environment management platform in time through a wireless communication system of the multi-channel ion chromatography online detector, so that the atmospheric pollution is monitored and prevented in real time.
The utility model provides a pair of online entrapment of atmosphere aerosol and chemical composition detection device adopts the static circular diffusion corrosion ware of wet-type and has steam generator's aerosol trap set, makes the vacuum pump work under the constant temperature constant current through control flow sensor to acquire the aerosol in whole atmosphere appearance, carry out the analysis to chemical composition through multichannel ion chromatography on-line measuring appearance. The method has the advantages of real-time, rapidness, accuracy, simple operation and maintenance and the like.
Through the utility model discloses can in time, accurate with on the data detected upload atmospheric environment management platform, make the atmosphere pollution obtain real time monitoring and prevention and cure.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
1. A wet static circular diffusion erosion device, 2, an aerosol catcher, 3, a steam generator, 4, a vacuum generator system, 5, a chemical component analysis system,
101. the inlet of the air particle cutter is provided with an air particle cutter,
102. an air particle cutter is arranged on the air particle cutter,
103. an outlet of the air particle cutter is provided with an air particle cutter,
104. a gas inlet of a wet static circular diffusion corrosion device,
105. a gas outlet of the wet static circular diffusion corrosion device,
106. an absorption liquid storage bottle is arranged on the upper portion of the bottle,
107. an inlet pipe of an absorption liquid delivery pump,
108. an absorption liquid delivery pump for delivering the absorption liquid,
109. an outlet pipe of the absorption liquid delivery pump,
110-,
112, 113, an outlet flow control valve of the absorption liquid conveying pump,
114. an absorption liquid outlet of the wet static circular diffusion corrosion device,
115. an absorption liquid discharge pipe of the wet static circular diffusion corrosion device,
116. a control valve of an absorption liquid outlet of the wet static circular diffusion corrosion device,
117. a storage bottle for the soluble gas absorption liquid,
201. an inlet of the aerosol catcher is provided with an air inlet,
202. the vapor inlet of the aerosol catcher is provided with a vapor inlet,
203. a vacuum inlet of the aerosol catcher is provided,
204. an inlet of a standard sample of the aerosol catcher,
205. an outlet of a sample to be tested of the aerosol catcher,
206. an outlet of the overflow liquid of the aerosol catcher,
207. an outlet of the condensed liquid of the aerosol catcher,
208. a collection bottle for the overflow liquid and the condensate liquid,
301. an outlet pipe of the steam generator and an assembly,
302. a liquid-phase inlet pipe of the steam generator,
303. an inlet pipe of a pure water delivery pump,
304. a pure water storage bottle,
305. a pure water delivery pump for delivering pure water,
306. an electric heating control system of a steam generator,
401. a vacuum inlet connecting pipe of the aerosol catcher,
402. a gas flow sensor for measuring the flow rate of gas,
403. a vacuum meter is arranged on the upper portion of the vacuum tube,
404. the inlet of the vacuum pump is provided with a vacuum pump,
405. an exhaust port of the vacuum pump,
501. an inlet of a sample to be tested is provided,
502. the liquefied aerosol sample to be tested is connected with a valve,
503 and 504, an outlet of the sample to be detected,
505. an automatic sample feeding device is arranged on the device,
506. a liquefied aerosol connecting pipe is arranged on the bottom of the tank,
508. a multi-channel ion chromatography on-line detector,
509. an aerosol trap outlet pipe for a sample to be tested.
Detailed Description
The following detailed description will be made of an on-line atmospheric aerosol trapping and chemical component detecting device according to the present invention with reference to the accompanying drawings.
As shown in the accompanying drawings, the device for on-line capture of atmospheric aerosol and detection of chemical components of the present invention quantitatively introduces the ambient atmosphere and the absorption liquid into the wet static circular diffusion and corrosion device respectively, and quantitatively absorbs the soluble components in the ambient atmosphere by the absorption liquid in the wet static circular diffusion and corrosion device through the membrane separation mode of the gas selective permeable membrane, and collects the absorbed absorption liquid;
the environmental atmosphere separated and absorbed by the film is conveyed to an aerosol catcher to catch the atmospheric aerosol, the catching is carried out by utilizing the difference of the diffusion speeds of the atmosphere and the aerosol, the aerosol is wrapped by a large amount of water vapor under the action of the water vapor sprayed by a vapor generator when entering the aerosol catcher, liquid drops are quickly formed in a cooling state to be acquired and caught, and liquefied gas sol sample liquid to be detected is obtained after the catching,
and respectively or together feeding the absorbed absorption liquid and the liquefied aerosol sample liquid to be detected into a multi-channel ion chromatography online detector for chemical component analysis, thus forming a real-time atmospheric aerosol online trapping and chemical component detection system.
The absorption liquid adopts hydrogen peroxide (hydrogen peroxide) with the concentration of 1% -3%, the membrane power of the gas selective permeable membrane in the wet static circular diffusion corrosion device adopts the reaction power of the hydrogen peroxide and the hydrogen peroxide which can generate oxidation-reduction reaction in the environmental atmosphere, and the soluble gas and pollutants in the environmental atmosphere can be absorbed completely without damage.
The gas selective permeability membrane in the wet static circular diffusion etcher adopts a liquid membrane.
The steam in the steam generator is derived from pure water; the steam output temperature of the steam generator is 90-110 ℃, and the pressure of the saturated steam is 0.02-0.03 MPa.
The cooling of the aerosol in the aerosol catcher after being coated by a large amount of water vapor adopts vacuum cooling, the working state of a vacuum pump is standard atmospheric pressure, and the flow rate is 16.7ml/min at 20 ℃.
The gas sampling device is a wet static circular diffusion corrosion device, and a gas selective permeability membrane technology is adopted, so that gaseous pollutants in the air can pass through the membrane to enter the absorption liquid channel and react with hydrogen peroxide. The dynamic principle of the reaction process is oxidation-reduction reaction, and the nondestructive complete absorption of gaseous pollutants is ensured. The soluble gas can be quantitatively absorbed in the wet static circular diffusion corrosion device;
by utilizing the difference of the diffusion speeds of gas and aerosol, when the aerosol completely enters the aerosol trap from the inlet of the aerosol trap, the aerosol is coated by a large amount of water vapor under the action of the water vapor sprayed by the vapor generator, liquid drops are quickly formed in a self-cooling state, and the liquid drops are obtained from the outlet of a sample to be detected of the aerosol trap;
chemical components are detected by the multi-channel ion chromatography online detector, and detection data are uploaded to the atmospheric environment management platform in time through a wireless communication system of the multi-channel ion chromatography online detector, so that atmospheric pollution is monitored and prevented in real time.
An atmospheric aerosol on-line trapping and chemical component detecting device,
the gas sampling device is a wet static circular diffusion corrosion device, and a gas selective permeability membrane technology is adopted, so that gaseous pollutants in the air can pass through the membrane to enter the absorption liquid channel and react with hydrogen peroxide. The dynamic principle of the reaction process is oxidation-reduction reaction, and the nondestructive complete absorption of gaseous pollutants is ensured. The soluble gas can be quantitatively absorbed in the wet static circular diffusion corrosion device;
by utilizing the difference of the diffusion speeds of gas and aerosol, when the aerosol completely enters the aerosol trap from the inlet of the aerosol trap, the aerosol is coated by a large amount of water vapor under the action of the water vapor sprayed by the vapor generator, liquid drops are quickly formed in a self-cooling state, and the liquid drops are obtained from the outlet of a sample to be detected of the aerosol trap;
the chemical components are detected by a multi-channel ion chromatography online detector, and the detection data is uploaded to an atmospheric environment management platform in time through a wireless communication system of the multi-channel ion chromatography online detector, so that the atmospheric pollution is monitored and prevented in real time.
An atmospheric aerosol on-line trapping and chemical component detection device mainly comprises: the device comprises a wet static circular diffusion corrosion device (1), an aerosol catcher (2), a steam generator (3), a vacuum generator system (4) and a chemical component analysis system (5).
Wherein the content of the first and second substances,
a wet static circular diffusion etcher (1) comprises: an air cutter (102), an air cutter inlet (101), an air cutter outlet (103), a wet static circular diffusion corrosion device gas inlet (104), a wet static circular diffusion corrosion device gas outlet (105), an absorption liquid storage bottle (106), an absorption liquid conveying pump (108) and an absorption liquid conveying pump inlet pipe (107), an absorption liquid conveying pump outlet pipe (109), absorption liquid conveying pump outlet flow control valves (112) (113), wet static circular diffusion corrosion device absorption liquid inlets (110) (111), a wet static circular diffusion corrosion device absorption liquid outlet (114), a wet static circular diffusion corrosion device absorption liquid outlet control valve (116), a wet static circular diffusion corrosion device absorption liquid outlet (115), a soluble gas absorption liquid storage bottle (117) and a wet static circular diffusion corrosion device gas outlet pipe (118);
the aerosol trap (2) comprises: the device comprises an aerosol catcher inlet (201), an aerosol catcher steam inlet (202), an aerosol catcher vacuum inlet (203), an aerosol catcher standard sample inlet (204), an aerosol catcher sample outlet to be tested (205), an aerosol catcher overflow liquid outlet (206), an aerosol catcher condensate outlet (207) and an overflow liquid and condensate collecting bottle (208);
a steam generator (3), a vacuum generator system (4), a steam generator outlet pipe and assembly (301), a steam generator liquid phase inlet pipe (302), a pure water storage bottle (304), a pure water delivery pump (305), a pure water delivery pump inlet pipe (303) and a steam generator electric heating control system (306);
the vacuum generator system (4) comprises: the device comprises an aerosol trap vacuum inlet connecting pipe (401), a gas flow sensor (402), a vacuum meter (403), a vacuum pump inlet (404) and a vacuum pump outlet (405);
the chemical composition analysis system (5) includes: liquefied aerosol sample connecting valve (502) that awaits measuring, liquefied aerosol sample connecting valve that awaits measuring are equipped with: the device comprises a sample inlet (501) to be detected, sample outlets (503) and (504) to be detected, an automatic sample introduction device (505), a liquefied aerosol connecting pipe (506), a soluble gas connecting pipe (507), a multi-channel ion chromatography online detector (508) and a sample outlet pipe (509) of an aerosol trap to be detected.
The connection form of the device is as follows: a gas outlet pipe (118) of the wet static circular diffusion corrosion device is connected with an inlet (201) of the aerosol catcher; the steam generator outlet pipe and assembly (301) is connected with the aerosol catcher steam inlet (202); the aerosol catcher vacuum inlet (203) is connected with the aerosol catcher vacuum inlet connecting pipe (401); the outlet (205) of the sample to be tested of the aerosol trap is connected with the inlet (501) of the sample to be tested through the outlet pipe (509) of the sample to be tested of the aerosol trap; the automatic sample introduction device (505) is connected with the multi-channel ion chromatography online detector (508); the device for on-line trapping of the atmospheric aerosol and detecting the chemical components is formed.
The device can monitor the chemical components of the atmospheric aerosol in real time on line, and timely upload the detection data to an atmospheric environment management platform through a wireless communication system of the multi-channel ion chromatography online detector, so that the atmospheric pollution is monitored and prevented in real time.
The existing atmospheric aerosol detection device collects particulate matters through a filter membrane, and then sends the particulate matters to a laboratory for weighing, dissolving, extracting and analyzing by using ion chromatography. Large sampling error, easy loss of sample storage, time and labor consumption, incapability of reflecting the high-frequency change rule of water-soluble components in atmospheric particulates and the like.
The device adopts the collection of the wet static circular diffusion corrosion device and the aerosol catcher with the steam generator, and enables the vacuum pump to work under constant temperature cross flow by controlling the flow sensor, thereby obtaining the aerosol in all atmospheric samples and analyzing chemical components by the multi-channel ion chromatography online detector. The method has the advantages of real-time, rapidness, accuracy, simple operation and maintenance and the like.
The device can timely and accurately upload the detection data to an atmospheric environment management platform, so that the atmospheric pollution is monitored and prevented in real time.
The utility model relates to an on-line atmospheric aerosol trapping and chemical component detecting device, the mechanism of which comprises a wet static circular diffusion erosion device (1), an aerosol trap (2) and a chemical component analysis system (5),
an ambient atmosphere quantitative introduction device is arranged at the upstream of the wet static circular diffusion etcher (1), the ambient atmosphere quantitative introduction device is communicated with a gas inlet (104) of the wet static circular diffusion etcher,
a gas selective permeable membrane is arranged in a wet static circular diffusion etcher (1),
the absorption liquid stored in the absorption liquid storage bottle (106) is conveyed into the wet static circular diffusion corrosion apparatus (1) through an absorption liquid conveying pump (108) and a pipeline, the absorption liquid and the atmosphere carry out substance exchange between membranes through a gas selective permeable membrane, and the absorption liquid absorbs the soluble components of the atmosphere; the absorption liquid is connected with an absorption liquid discharge pipeline from the downstream of the wet static circular diffusion corrosion device (1), and the absorption liquid is discharged from the absorption liquid discharge pipeline;
the atmosphere of the wet static circular diffusion corrosion device (1) is communicated to the aerosol catcher (2) through a gas outlet pipe (118) of the wet static circular diffusion corrosion device connected with the downstream;
the inner cavity of the aerosol catcher (2) is additionally provided with steam at the atmospheric spraying position for spraying mixed flow, the steam wraps the aerosol,
the tail end of the aerosol catcher (2) is provided with a cooling system which cools the vapor coated aerosol in the aerosol catcher, the tail end of the aerosol catcher (2) is connected with a liquefied aerosol sample liquid collecting device to be tested,
the liquefied aerosol sample liquid to be detected confluence collecting device is connected with a multi-channel ion chromatography on-line detector (508) through an automatic sampling device (505) for on-line detection.
The ambient atmosphere quantitative introduction device is composed of an air particle cutter inlet (101), an air particle cutter (102) and an air particle cutter outlet (103), and is provided with an atmospheric flow sensor which monitors the flow speed of the ambient atmosphere quantitative introduction device for introducing the atmosphere to be a constant speed;
steam is sprayed into the mixed flow and is provided by a steam generator (3), the steam generator (3) is provided with a pure water storage bottle (304), the pure water storage bottle (304) is connected with a pure water delivery pump inlet pipe (303), a pure water delivery pump (305) is arranged on a pipeline of the pure water delivery pump inlet pipe (303), the pure water delivery pump inlet pipe (303) is connected to the steam generator (3) through a steam generator liquid phase inlet pipe (302), the steam generator (3) is provided with a steam generator electric heating control system (306), the steam generator (3) delivers steam to an inner cavity of an aerosol trap (2) to be mixed with atmosphere through a steam generator outlet pipe and a combined piece (301), and the aerosol is wrapped;
the cooling system adopts vacuum cooling, the vacuum cooling is configured with a vacuum generator system, the vacuum generator system (4) is connected to the tail end of the aerosol trap (2) through an aerosol trap vacuum inlet connecting pipe (401), and the aerosol trap vacuum inlet connecting pipe (401) is sequentially connected with a gas flow sensor (402), a vacuum meter (403), a vacuum pump inlet (404), a vacuum pump (4) and a vacuum pump outlet; the vacuum pump provides vacuum cooling for the inner cavity of the aerosol catcher (2);
the liquefied aerosol sample liquid collection device that awaits measuring is connected by sample import (501) to be measured, liquefied aerosol sample connecting valve (502) and liquefied aerosol connecting pipe (506) and is formed, disposes sample export (503) (504) that awaits measuring on the liquefied aerosol sample connecting valve (502) that awaits measuring, liquefied aerosol connecting pipe (506) are connected to on autoinjection device (505), and autoinjection device (505) are connected to on-line detector (508) of multichannel ion chromatography.
The absorption liquid is connected with an absorption liquid discharge pipeline from the downstream of the wet static circular diffusion corrosion device (1), and the absorption liquid is discharged from the absorption liquid discharge pipeline; the absorption liquid is discharged and converged to a soluble gas absorption liquid storage bottle (117) through a wet static circular diffusion corrosion device absorption liquid discharge port (114), a wet static circular diffusion corrosion device absorption liquid discharge port control valve (116) and a wet static circular diffusion corrosion device absorption liquid discharge pipe (115);
the soluble gas absorption liquid storage bottle (117) connects the soluble gas absorption liquid to an automatic sampling device (505), and the soluble gas absorption liquid and the liquid gas sol sample to be detected are respectively or together fed into a multi-channel ion chromatography online detector for chemical composition analysis.
Path of gas, liquid and cold flow in the aerosol trap (2):
atmospheric air passing through the wet static circular diffusion corrosion device (1) enters the aerosol trap (2) through an aerosol trap inlet (201), a vapor inlet pipe of the aerosol trap is connected in parallel with a front pipeline of an inner cavity of the aerosol trap (2) through which the atmospheric air enters and flows, the vapor is mixed with the atmospheric air in the front pipeline of the inner cavity of the aerosol trap, and the aerosol is coated by the vapor to form liquefied aerosol;
the periphery of the inner cavity of the aerosol catcher (2) is provided with a sealed vacuum cavity, the inner cavity is communicated with the nozzle end of the inner cavity, the nozzle end is provided with a reduced nozzle end,
a spraying and mixing cavity is arranged at the end of the nozzle, the spraying and mixing cavity is connected with a standard sample inlet at the upstream, standard sample liquid enters the spraying and mixing cavity through the standard sample inlet, the standard sample liquid is mixed with liquefied aerosol sprayed from the nozzle end and is discharged to an outlet pipe (509) of a sample to be tested of the aerosol trap through an outlet (205) of the sample to be tested of the aerosol trap, and then enters an automatic sample feeding device (505) through a connecting valve (502) of the sample to be tested of the liquefied aerosol;
the vacuum chamber is connected with a vacuum pump, the vacuum pump provides vacuum degree for the vacuum chamber and is used for vacuum condensation of steam and liquefied aerosol, and the steam condensate and the liquefied aerosol overflow liquid are collected to an overflow liquid and condensate collecting bottle (208) through an aerosol trap condensate outlet (207) and an aerosol trap overflow liquid outlet (206);
the multi-channel ion chromatography online detector (508) collects components in the soluble gas absorption liquid storage bottle (117), components of the aerosol trap sample outlet (205) to be detected and components of the overflow liquid and condensate liquid collecting bottle (208) for detection and analysis.
The utility model discloses an online entrapment of atmosphere aerosol and chemical composition detection device's operation process is:
(1) after the vacuum pump is started, the atmosphere to be measured enters the wet static circular diffusion corrosion device through the cutter, the air inflow and pressure of the atmosphere are adjusted through the atmospheric flow sensor, and the flow rate of 16.7L/min is kept;
(2) the absorption liquid conveying pump continuously conveys the absorption liquid into the wet static circular diffusion corrosion device, the wet state in the wet static circular diffusion corrosion device is kept, and soluble gas in the wet static circular diffusion corrosion device is quantitatively absorbed;
(3) because the diffusion speeds of gas and aerosol are different, the aerosol completely enters the aerosol trap from the inlet of the aerosol trap, and under the action of water vapor sprayed by the vapor generator, the aerosol is coated by a large amount of water vapor, quickly forms liquid drops in a self-cooling state, and flows out from the outlet of a sample to be detected of the aerosol trap under the action of gravity;
(4) insoluble gas and waste water steam are discharged through a discharge port of a vacuum pump, and condensed water and overflow liquid are discharged through an overflow liquid outlet of the aerosol trap and a condensate outlet of the aerosol trap;
(5) a sample to be detected acquired by the aerosol catcher passes through a liquefied aerosol sample to be detected connecting valve and enters a multi-channel ion chromatography online detector through an automatic sample injector to be subjected to chemical component detection;
(6) after the multi-channel ion chromatography online detector detects chemical components, the detection data is uploaded to an atmospheric environment management platform in time through a wireless communication system of the multi-channel ion chromatography online detector, so that atmospheric pollution is monitored and prevented in real time.
Claims (6)
1. An on-line atmospheric aerosol trapping and chemical component detecting device is characterized by comprising a wet static circular diffusion erosion device (1), an aerosol trap (2) and a chemical component analysis system (5),
an ambient atmosphere quantitative introduction device is arranged at the upstream of the wet static circular diffusion etcher (1), the ambient atmosphere quantitative introduction device is communicated with a gas inlet (104) of the wet static circular diffusion etcher,
a gas selective permeable membrane is arranged in a wet static circular diffusion etcher (1),
the absorption liquid stored in the absorption liquid storage bottle (106) is conveyed into the wet static circular diffusion corrosion apparatus (1) through an absorption liquid conveying pump (108) and a pipeline, the absorption liquid and the atmosphere carry out substance exchange between membranes through a gas selective permeable membrane, and the absorption liquid absorbs the soluble components of the atmosphere; the absorption liquid is connected with an absorption liquid discharge pipeline from the downstream of the wet static circular diffusion corrosion device (1), and the absorption liquid is discharged from the absorption liquid discharge pipeline;
the atmosphere of the wet static circular diffusion corrosion device (1) is communicated to the aerosol catcher (2) through a gas outlet pipe (118) of the wet static circular diffusion corrosion device connected with the downstream;
the inner cavity of the aerosol catcher (2) is additionally provided with steam at the atmospheric spraying position for spraying mixed flow, the steam wraps the aerosol,
the tail end of the aerosol catcher (2) is provided with a cooling system which cools the vapor coated aerosol in the aerosol catcher, the tail end of the aerosol catcher (2) is connected with a liquefied aerosol sample liquid collecting device to be tested,
the liquefied aerosol sample liquid to be detected confluence collecting device is connected with a multi-channel ion chromatography on-line detector (508) through an automatic sampling device (505) for on-line detection.
2. The on-line atmospheric aerosol trapping and chemical component detecting device according to claim 1, wherein:
the ambient atmosphere quantitative introduction device is composed of an air particle cutter inlet (101), an air particle cutter (102) and an air particle cutter outlet (103), and is provided with an atmospheric flow sensor which monitors the flow speed of the ambient atmosphere quantitative introduction device for introducing the atmosphere to be a constant speed;
steam is sprayed into the mixed flow and is provided by a steam generator (3), the steam generator (3) is provided with a pure water storage bottle (304), the pure water storage bottle (304) is connected with a pure water delivery pump inlet pipe (303), a pure water delivery pump (305) is arranged on a pipeline of the pure water delivery pump inlet pipe (303), the pure water delivery pump inlet pipe (303) is connected to the steam generator (3) through a steam generator liquid phase inlet pipe (302), the steam generator (3) is provided with a steam generator electric heating control system (306), the steam generator (3) delivers steam to an inner cavity of an aerosol trap (2) to be mixed with atmosphere through a steam generator outlet pipe and a combined piece (301), and the aerosol is wrapped;
the cooling system adopts vacuum cooling, the vacuum cooling is configured with a vacuum generator system, the vacuum generator system (4) is connected to the tail end of the aerosol trap (2) through an aerosol trap vacuum inlet connecting pipe (401), and the aerosol trap vacuum inlet connecting pipe (401) is sequentially connected with a gas flow sensor (402), a vacuum meter (403), a vacuum pump inlet (404), a vacuum pump and a vacuum pump outlet (405); the vacuum pump provides vacuum cooling for the inner cavity of the aerosol catcher (2);
the liquefied aerosol sample liquid collection device that awaits measuring is connected by sample import (501) to be measured, liquefied aerosol sample connecting valve (502) and liquefied aerosol connecting pipe (506) and is formed, disposes sample export (503) (504) that awaits measuring on the liquefied aerosol sample connecting valve (502) that awaits measuring, liquefied aerosol connecting pipe (506) are connected to on autoinjection device (505), and autoinjection device (505) are connected to on-line detector (508) of multichannel ion chromatography.
3. The on-line atmospheric aerosol trapping and chemical component detecting device according to claim 1, wherein:
the absorption liquid is connected with an absorption liquid discharge pipeline from the downstream of the wet static circular diffusion corrosion device (1), and the absorption liquid is discharged from the absorption liquid discharge pipeline; the absorption liquid is discharged and converged to a soluble gas absorption liquid storage bottle (117) through a wet static circular diffusion corrosion device absorption liquid discharge port (114), a wet static circular diffusion corrosion device absorption liquid discharge port control valve (116) and a wet static circular diffusion corrosion device absorption liquid discharge pipe (115);
the soluble gas absorption liquid storage bottle (117) connects the soluble gas absorption liquid to an automatic sampling device (505), and the soluble gas absorption liquid and the liquid gas sol sample to be detected are respectively or together fed into a multi-channel ion chromatography online detector for chemical composition analysis.
4. The on-line atmospheric aerosol trapping and chemical component detecting device according to claim 1, wherein:
atmospheric air passing through the wet static circular diffusion corrosion device (1) enters the aerosol trap (2) through an aerosol trap inlet (201), a vapor inlet pipe of the aerosol trap is connected in parallel with a front pipeline of an inner cavity of the aerosol trap (2) through which the atmospheric air enters and flows, the vapor is mixed with the atmospheric air in the front pipeline of the inner cavity of the aerosol trap, and the aerosol is coated by the vapor to form liquefied aerosol;
the periphery of the inner cavity of the aerosol catcher (2) is provided with a sealed vacuum cavity, the inner cavity is communicated with the nozzle end of the inner cavity, the nozzle end is provided with a reduced nozzle end,
a spraying and mixing cavity is arranged at the end of the nozzle, the spraying and mixing cavity is connected with a standard sample inlet at the upstream, standard sample liquid enters the spraying and mixing cavity through the standard sample inlet, the standard sample liquid is mixed with liquefied aerosol sprayed from the nozzle end and is discharged to an outlet pipe (509) of a sample to be tested of the aerosol trap through an outlet (205) of the sample to be tested of the aerosol trap, and then enters an automatic sample feeding device (505) through a connecting valve (502) of the sample to be tested of the liquefied aerosol;
the vacuum chamber is connected with a vacuum pump, the vacuum pump provides vacuum degree for the vacuum chamber and is used for vacuum condensation of steam and liquefied aerosol, and the steam condensate and the liquefied aerosol overflow liquid are collected to an overflow liquid and condensate collecting bottle (208) through an aerosol trap condensate outlet (207) and an aerosol trap overflow liquid outlet (206);
the multi-channel ion chromatography online detector (508) collects components in the soluble gas absorption liquid storage bottle (117), components of the aerosol trap sample outlet (205) to be detected and components of the overflow liquid and condensate liquid collecting bottle (208) for detection and analysis.
5. The on-line atmospheric aerosol trapping and chemical component detecting device according to claim 1, wherein: the gas permselective membrane in a wet static circular diffusion etcher is a liquid membrane.
6. The on-line atmospheric aerosol trapping and chemical component detecting device according to claim 2, wherein: the steam in the steam generator is derived from pure water.
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| CN109946123A (en) * | 2019-02-19 | 2019-06-28 | 青岛普仁仪器有限公司 | A kind of atmospheric aerosol traps online and the method and apparatus of chemical component detection |
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| CN115078333A (en) * | 2022-08-19 | 2022-09-20 | 中国气象科学研究院 | Simulation device, detection system and detection method for gas-liquid heterogeneous reaction in atmosphere |
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| CN115931664A (en) * | 2022-12-30 | 2023-04-07 | 无锡学院 | Atmospheric aerosol collecting and detecting device and detecting method |
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