CN115508482A - Gas chromatograph gas combination device for high-sulfur-content gas - Google Patents
Gas chromatograph gas combination device for high-sulfur-content gas Download PDFInfo
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- CN115508482A CN115508482A CN202211147749.XA CN202211147749A CN115508482A CN 115508482 A CN115508482 A CN 115508482A CN 202211147749 A CN202211147749 A CN 202211147749A CN 115508482 A CN115508482 A CN 115508482A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/04—Preparation or injection of sample to be analysed
- G01N30/06—Preparation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N2030/022—Column chromatography characterised by the kind of separation mechanism
- G01N2030/025—Gas chromatography
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Abstract
The invention discloses a gas combination device for a gas chromatograph for high-sulfur-content gas, which comprises a gas chromatograph, a gas dilution device and a tail gas treatment device, wherein the gas combination device comprises a gas inlet, a gas outlet and a gas outlet; the gas diluting device comprises a six-way valve and a gas tank to be tested, a gas to be tested, a measuring cylinder, a piston tank, a vacuum pump, a carrier gas fixing container and an output pipeline, wherein the gas tank to be tested and the gas to be tested are correspondingly connected with six interfaces of the six-way valve, the output pipeline is connected with an inlet of a gas chromatograph and an air supply pipe through an output three-way valve, the other end of the air supply pipe is connected with an input three-way valve, another inlet of the input three-way valve is connected with an outlet of the gas chromatograph, the top of the chemical treatment tank is connected with an air outlet pipe, the bottom of the chemical treatment tank is connected with a waste liquid pipe, and one end, far away from the chemical treatment tank, of the air outlet pipe is connected with a physical adsorption tank. Aiming at the gas chromatography experiment of high-sulfur-content gas, the invention simultaneously considers the gas dilution at the front end of the gas chromatography experiment and the tail gas treatment at the rear end of the gas chromatography experiment, thereby effectively improving the accuracy and the efficiency of the experiment.
Description
Technical Field
The invention belongs to the technical field of oil-gas development experimental equipment, and particularly relates to a gas combination device for a gas chromatograph for high-sulfur-content gas.
Background
During a gas chromatography experiment, the test gas often exceeds the test range of a gas spectrometer due to overhigh concentration, particularly a high-sulfur-content gas well, the accuracy of the hydrogen sulfide content test is very important for field production, and therefore a sample to be tested needs to be diluted so as to meet the test condition; meanwhile, hydrogen sulfide gas is a toxic gas with pungent odor, so that tail gas treatment is required after a gas chromatography experiment.
The gas dilution device commonly used at present is to make the gas pass through a mass flow controller, the mass flow controller controls the flow of the gas according to the concentration value set by a control module, the concentration of the mixed gas generated after mixing is determined to be different according to the difference of the gas flow, so that the purpose of preparing the target gas concentration is achieved, but only one gas with one concentration can be prepared at one time; when the method is used for testing hydrogen sulfide gas, a laboratory generally uses an alkaline solution for simple neutralization, and the effect of tail gas treatment is neglected. When a gas chromatography test is carried out on high-sulfur-content gas, the gas needs to be diluted firstly, and tail gas treatment is carried out after an experiment, but a combined device matched with a gas chromatograph is not provided at present. Therefore, a gas chromatograph gas combination apparatus for high sulfur-containing gas has been proposed.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a gas combination device for a gas chromatograph for high sulfur-containing gas, which can perform multiple real-time adjustment of gas concentration according to actual requirements, and can perform tail gas treatment after experiments, in order to overcome the defects of the prior art.
The technical scheme adopted by the invention is as follows: a gas combination device for a gas chromatograph aiming at high-sulfur-content gas comprises the gas chromatograph, a gas dilution device and a tail gas treatment device;
the gas dilution device comprises a six-way valve, a gas tank to be detected, a measuring cylinder for gas to be detected, a piston tank, a vacuum pump, a carrier gas fixed container and an output pipeline, wherein the gas tank to be detected, the measuring cylinder for gas to be detected, the piston tank, the vacuum pump, the carrier gas fixed container and the output pipeline are correspondingly connected with six interfaces of the six-way valve;
the tail gas processing apparatus includes chemical treatment jar and physical adsorption jar, copper sulfate solution is equipped with in the chemical treatment jar, and the input three-way valve is installed to the bottom one side of chemical treatment jar, and import and gas chromatograph exit linkage of input three-way valve, another import and air supply pipe connection, install the check valve to chemical treatment jar air inlet on the pipeline that input three-way valve and chemical treatment jar are connected, the top of chemical treatment jar is connected with the outlet duct, and the bottom is connected with the waste liquid pipe, install the control valve on outlet duct and the waste liquid pipe, the fine mesh filter basket has been put to chemical treatment jar bottom, and the chemical treatment jar is equipped with gas circulating pump outward, and the pipe that advances of gas circulating pump and chemical treatment jar top intercommunication, the exit tube of gas circulating pump and the bottom intercommunication of chemical treatment jar, all install the check valve on advancing pipe and the exit tube of gas circulating pump, the one end that the chemical treatment jar was kept away from to the outlet duct is connected with the physical adsorption jar, and the drying tube is installed to the upper portion in the physical adsorption jar, and the active carbon adsorption tube is installed to the lower part, and the tail end and the head end intercommunication of active carbon adsorption tube, the tail-end connection blast pipe of active carbon adsorption tube installs the hydrogen sulfide alarm on the blast pipe.
Preferably, the gas measuring cylinder adopts a transparent needle cylinder structure, and a scale layer is covered on the surface of the cylinder body.
Preferably, the activated carbon adsorption tubes adopt multi-stage activated carbon adsorption tubes, and the multi-stage activated carbon adsorption tubes are connected in a snake-shaped distribution manner.
Preferably, the chemical treatment tank is a transparent tank body.
Preferably, the fine mesh filtering basket is provided with a handle, and the fine mesh filtering basket and the handle are both made of acid corrosion resistant materials.
The invention has the beneficial effects that:
(1) A vacuum pump is arranged to vacuumize the whole device, so that the influence of air on gas dilution is effectively eliminated;
(2) The piston tank is adopted, and the gas dilution times can be adjusted in real time according to experiment requirements;
(3) The gas circulating pump is arranged, so that the gas in the chemical treatment tank can be circularly absorbed for multiple times, and the hydrogen sulfide can be absorbed more fully;
(4) The fine-mesh filtering basket is arranged, so that the generated precipitate can be prevented from blocking a pipeline, meanwhile, the precipitate can be taken out, and the content of the hydrogen sulfide is calculated according to the mass of the precipitate;
(5) The multistage active carbon adsorption tubes are adopted, so that residual hydrogen sulfide can be further absorbed, and the smell of hydrogen sulfide is reduced;
(6) The hydrogen sulfide alarm is arranged, so that the effect of removing hydrogen sulfide can be effectively monitored, and meanwhile, the active carbon adsorbent in the active carbon adsorption pipe can be conveniently and timely replaced.
Aiming at the gas chromatography experiment of high-sulfur-content gas, the invention simultaneously considers the gas dilution at the front end of the gas chromatography experiment and the tail gas treatment at the rear end of the gas chromatography experiment, thereby effectively improving the accuracy and the efficiency of the experiment.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
In the figure: 1. a gas chromatograph; 2. a six-way valve; 3. a gas tank to be tested; 4. taking a measuring cylinder from gas to be measured; 5. a piston can; 6. a vacuum pump; 7. a carrier gas fixed container; 8. an output pipeline; 9. a motor; 10. a carrier gas tank; 11. an output three-way valve; 12. an air supply pipe; 13. a chemical treatment tank; 14. a physical adsorption tank; 15. inputting a three-way valve; 16. an air outlet pipe; 17. a waste liquid pipe; 18. a fine mesh filter basket; 19. a gas circulation pump; 20. a drying tube; 21. an activated carbon adsorption tube; 22. a hydrogen sulfide alarm; 23. and (4) exhausting the gas.
Detailed Description
The invention will be described in further detail with reference to the drawings and specific embodiments.
Examples
As shown in fig. 1, the gas combination device for a gas chromatograph 1 for high sulfur-containing gas provided by the present embodiment includes a gas chromatograph 1, a gas dilution device, and an off-gas treatment device;
the gas diluting device comprises a six-way valve 2, a gas tank to be measured 3, a measuring cylinder to be measured 4, a piston tank 5, a vacuum pump 6, a carrier gas fixed container 7 and an output pipeline 8, wherein the gas tank to be measured 3, the piston tank, the vacuum pump 6, the carrier gas fixed container 7 and the output pipeline 8 are correspondingly connected with six interfaces of the six-way valve 2, the measuring cylinder to be measured 4 adopts a transparent needle cylinder structure, and a scale layer is covered on the surface of a cylinder body; the piston tank 5 is also connected with a motor 9 for driving the piston to move, the motor 9 adopts an adjusting motor 9, the displacement of the piston in the piston tank 5 can be controlled by adjusting the output of the motor 9, the carrier gas fixed container 7 is connected with a carrier gas tank 10 through a pressure adjusting valve, the pressure is changed through the pressure adjusting valve, and the carrier gas in the carrier gas tank 10 is sent into the carrier gas fixed container 7; an output three-way valve 11 is connected to the end of the output pipeline 8, one outlet of the output three-way valve 11 is connected to the inlet of the gas chromatograph 1, the other outlet of the output three-way valve 11 is connected to an air supply pipe 12, the other end of the air supply pipe 12 is connected to an input three-way valve 15, two control valves are further mounted on the air supply pipe 12, one control valve is arranged close to the output three-way valve 11, and the other control valve is arranged close to the input three-way valve 15; the other inlet of the input three-way valve 15 is connected with the outlet of the gas chromatograph 1, the outlet of the input three-way valve 15 is communicated with the chemical treatment tank 13 and is provided with a one-way valve which flows from the input three-way valve 15 to the chemical treatment tank 13, the chemical treatment tank 13 is filled with copper sulfate solution, the top of the chemical treatment tank 13 is connected with an air outlet pipe 16, the bottom of the chemical treatment tank 13 is connected with a waste liquid pipe 17, the air outlet pipe 16 and the waste liquid pipe 17 are provided with control valves, the bottom of the chemical treatment tank 13 is provided with a fine mesh filter basket 18, the fine mesh filter basket 18 is provided with a handle, and the fine mesh filter basket 18 and the handle are both made of acid corrosion resistant materials; a gas circulating pump 19 is arranged outside the chemical treatment tank 13, an inlet pipe of the gas circulating pump 19 is communicated with the top of the chemical treatment tank 13, a one-way valve is arranged on the inlet pipe, an outlet pipe of the gas circulating pump 19 is communicated with the bottom of the chemical treatment tank 13, and the one-way valve is also arranged on the outlet pipe, so that the gas circulates through the copper sulfate solution in the chemical treatment tank 13, the copper sulfate solution is ensured to fully react with hydrogen sulfide in the gas, and the aim of removing the hydrogen sulfide is fulfilled; the one end that chemical treatment jar 13 was kept away from to outlet duct 16 is connected with physical adsorption jar 14, and drying tube 20 is installed on upper portion in the physical adsorption jar 14, and active carbon adsorption tube 21 is installed to the lower part, active carbon adsorption tube 21 adopts multistage active carbon adsorption tube 21, and every grade of active carbon adsorption tube 21 end to end is snakelike form, is located the active carbon adsorption tube 21 and the 20 end-to-end connection of drying tube of head end, is located the active carbon adsorption tube 21 end-to-end connection exhaust pipe 23 of tail end, installs hydrogen sulfide alarm 22 on the exhaust pipe 23.
The working process is as follows:
the motor 9 is activated to push the piston of the piston tank 5 to the top position and then close all valves on the gas dilution unit, which is the initial state. Opening the valves on the six-way valve 2 except the other valves connected with the gas tank 3 to be tested, closing the valves on the gas supply pipe 12, opening the valves communicated with the gas chromatograph 1, opening the vacuum pump 6 for evacuation treatment, closing all the valves on the six-way valve 2 after evacuation is finished, and then closing the vacuum pump 6; opening the valves connected with the gas tank 3 to be measured and the gas taking and measuring cylinder 4 to be measured on the six-way valve 2, extracting a certain volume of gas to be measured into the gas taking and measuring cylinder 4 to be measured through the gas taking and measuring cylinder 4 to be measured according to the dilution required by the experiment, closing the valves connected with the gas tank 3 to be measured on the six-way valve 2 after the measurement is finished, opening the gas carrying tank 10, filling the gas carrying container 7 with carrier gas through adjusting and pressure regulating valves, controlling the gas dilution times according to the actual requirements because the volume of the gas carrying container 7 is fixed, closing the pressure regulating valves after filling the carrier gas, opening the valves connected with the piston tank 5 on the six-way valve 2, controlling the motor 9 to work, sucking the gas to be measured in the gas taking cylinder 4 to be measured into the piston tank 5, closing the motor 9 and the valves connected with the gas taking and measuring cylinder 4 to be measured on the six-way valve 2 after sucking, then a valve connected with the carrier gas fixed container 7 on the six-way valve 2 is opened, the motor 9 is continuously started to suck the carrier gas in the carrier gas fixed container 7 into the piston tank 5, the position of the piston tank 54 at the moment is recorded, then the motor 9 is controlled to drive the piston in the piston tank 5 to move back and forth between the top and the recorded position, so that the gas to be detected is mixed with the carrier gas to dilute the gas, the sample inlet and the sample outlet of the gas chromatograph 1 are opened after the gas is diluted, the one-way valve between the input three-way valve 15 and the chemical treatment tank 13 is opened, the motor 9 is started to push the piston, so that the diluted gas flows into the gas chromatograph 1, the sample introduction of the gas chromatograph 1 is stopped after bubbles are generated in the chemical treatment tank 13, the sample inlet and the sample outlet of the chromatograph are closed, and the gas chromatography experiment is started.
After the experiment is finished, a sample outlet of the gas chromatograph 1 is opened, a control valve on the air supply pipe 12 is opened, a check valve on an inlet pipe and an outlet pipe of a gas circulating pump 19 is opened, a valve of an outlet pipe 16 is closed, residual gas is discharged into the chemical treatment tank 13, the residual gas circularly flows through a copper sulfate solution through the gas circulating pump 19, the hydrogen sulfide in the gas is circularly and chemically absorbed, the hydrogen sulfide and the copper sulfate solution are contacted and react to generate precipitate, through observation, when the precipitate is not generated in the chemical treatment tank 13, the gas circulating pump 19 is closed, the check valve on the inlet pipe and the outlet pipe of the gas circulating pump 19 is closed, then the control valve on the outlet pipe 16 is opened, the gas after chemical treatment is discharged into a physical adsorption tank 14, the gas after being dried by a drying pipe 20 enters a multistage activated carbon adsorption pipe 21, the residual hydrogen sulfide in the gas is further physically adsorbed, the hydrogen sulfide content in the gas is extremely low, peculiar smell in the gas is mainly eliminated through the activated carbon, finally the gas is discharged through an exhaust pipe 23, the gas flows through a hydrogen sulfide alarm 22 when the concentration of the hydrogen sulfide in the discharged gas can be monitored in real time, and the concentration of the adsorbent exceeds a preset value, and the activated carbon adsorbent is timely replaced. After the treatment is finished, a control valve of the waste liquid pipe 17 is opened, the waste liquid is discharged, the fine mesh filter basket 18 is taken out through the handle, the precipitate in the fine mesh filter basket 18 is recycled and weighed, and the mass of hydrogen sulfide in the gas can be calculated through the mass of the precipitate copper sulfide.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and the inventive concept provided by the present invention should be covered within the scope of the present invention.
Claims (5)
1. A gas combination device for a gas chromatograph (1) for a high sulfur-containing gas, comprising the gas chromatograph (1), characterized in that: the device also comprises a gas diluting device and a tail gas treatment device;
the gas dilution device comprises a six-way valve (2), a gas tank to be measured (3), a measuring cylinder (4) for gas to be measured, a piston tank (5), a vacuum pump (6), a carrier gas fixed container (7) and an output pipeline (8), wherein the gas tank to be measured, the measuring cylinder (4) for gas to be measured, the piston tank (5), the vacuum pump (6), the carrier gas fixed container (7) and the output pipeline (8) are correspondingly connected, the piston tank (5) is connected with a motor (9) for driving a piston to move, the carrier gas fixed container (7) is connected with a gas carrying tank (10) through a pressure regulating valve, the end part of the output pipeline (8) is connected with an output three-way valve (11), one outlet of the output three-way valve (11) is connected with an inlet of a gas chromatograph (1), the other outlet of the output three-way valve is connected with a gas supply pipe (12), and a control valve is installed on the gas supply pipe (12);
the tail gas treatment device comprises a chemical treatment tank (13) and a physical adsorption tank (14), wherein a copper sulfate solution is arranged in the chemical treatment tank (13), an input three-way valve (15) is installed on one side of the bottom of the chemical treatment tank (13), one inlet of the input three-way valve (15) is connected with an outlet of a gas chromatograph (1), the other inlet is connected with a gas supply pipe (12), a one-way valve for introducing gas into the chemical treatment tank (13) is installed on a pipeline connected with the chemical treatment tank (13) of the input three-way valve (15), a gas outlet pipe (16) is connected with the top of the chemical treatment tank (13), a waste liquid pipe (17) is connected with the bottom of the gas outlet pipe (16) and the waste liquid pipe (17), a control valve is installed on the fine mesh filtering basket (18) arranged at the bottom in the chemical treatment tank (13), a gas circulating pump (19) is arranged outside the chemical treatment tank (13), the inlet pipe of the gas circulating pump (19) is communicated with the top of the chemical treatment tank (13), the outlet pipe of the gas circulating pump (19) is communicated with the bottom of the chemical treatment tank (13), the one-way valve and the one-way adsorption pipe of the gas circulating pump (19) are installed on the one-way valve, an active carbon adsorption tank (14) is installed at one end of the physical adsorption tank (14), and an active carbon adsorption tank (14) is installed on the lower part of the physical adsorption tank (14) is installed on the physical treatment tank (14), the tail end of drying tube (20) and the head end intercommunication of active carbon adsorption pipe (21), the end connection blast pipe (23) of active carbon adsorption pipe (21), install hydrogen sulfide alarm (22) on blast pipe (23).
2. The gas chromatograph (1) gas combination device for high sulfur containing gases according to claim 1, characterized in that: the gas measuring cylinder adopts a transparent cylinder structure, and a scale layer is covered on the surface of the cylinder body.
3. The gas chromatograph (1) gas combination device for high sulfur containing gases according to claim 1, characterized in that: the activated carbon adsorption tube (21) adopts a multi-stage activated carbon adsorption tube (21), and the multi-stage activated carbon adsorption tube (21) is in snake-shaped distribution connection.
4. The gas chromatograph (1) gas combination device for high sulfur containing gases according to claim 1, characterized in that: the chemical treatment tank (13) is a transparent tank body.
5. The gas chromatograph (1) gas combination device for high sulfur containing gases according to claim 1, characterized in that: the fine mesh filtering basket (18) is provided with a handle, and the fine mesh filtering basket (18) and the handle are both made of acid corrosion resistant materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211147749.XA CN115508482A (en) | 2022-09-19 | 2022-09-19 | Gas chromatograph gas combination device for high-sulfur-content gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211147749.XA CN115508482A (en) | 2022-09-19 | 2022-09-19 | Gas chromatograph gas combination device for high-sulfur-content gas |
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| CN115508482A true CN115508482A (en) | 2022-12-23 |
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| CN202211147749.XA Pending CN115508482A (en) | 2022-09-19 | 2022-09-19 | Gas chromatograph gas combination device for high-sulfur-content gas |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539569A (en) * | 2012-01-04 | 2012-07-04 | 中国石油化工股份有限公司 | Detecting method of ammonia and hydrogen sulfide in wet ammonia-containing acidic gas |
| CN204429039U (en) * | 2015-01-06 | 2015-07-01 | 南京特种气体厂有限公司 | A kind of exhaust emissions detoxification system for mist configuration |
| CN106226446A (en) * | 2016-09-21 | 2016-12-14 | 贵州省环境科学研究设计院 | A kind of gas chromatogram dilution air intake installation |
| CN213942658U (en) * | 2020-11-28 | 2021-08-13 | 山东圣瑞医药科技有限公司 | Gas chromatograph tail gas exhaust apparatus |
| CN114028912A (en) * | 2021-11-23 | 2022-02-11 | 鄂尔多斯市西北能源化工有限责任公司 | Absorption and purification device for tail gas containing hydrogen sulfide gas chromatography |
| CN216051046U (en) * | 2021-08-26 | 2022-03-15 | 科正检测(苏州)有限公司 | Gas diluting device |
-
2022
- 2022-09-19 CN CN202211147749.XA patent/CN115508482A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539569A (en) * | 2012-01-04 | 2012-07-04 | 中国石油化工股份有限公司 | Detecting method of ammonia and hydrogen sulfide in wet ammonia-containing acidic gas |
| CN204429039U (en) * | 2015-01-06 | 2015-07-01 | 南京特种气体厂有限公司 | A kind of exhaust emissions detoxification system for mist configuration |
| CN106226446A (en) * | 2016-09-21 | 2016-12-14 | 贵州省环境科学研究设计院 | A kind of gas chromatogram dilution air intake installation |
| CN213942658U (en) * | 2020-11-28 | 2021-08-13 | 山东圣瑞医药科技有限公司 | Gas chromatograph tail gas exhaust apparatus |
| CN216051046U (en) * | 2021-08-26 | 2022-03-15 | 科正检测(苏州)有限公司 | Gas diluting device |
| CN114028912A (en) * | 2021-11-23 | 2022-02-11 | 鄂尔多斯市西北能源化工有限责任公司 | Absorption and purification device for tail gas containing hydrogen sulfide gas chromatography |
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