CN219984318U

CN219984318U - Device for absorbing halide in hydrogen

Info

Publication number: CN219984318U
Application number: CN202321260679.9U
Authority: CN
Inventors: 万伟; 刘雅琼; 高永杰; 王亚敏; 杨孟智; 张祎玮
Original assignee: Sinopec Petrochemical Research Institute Co ltd; China Petroleum and Chemical Corp
Current assignee: Sinopec Petrochemical Research Institute Co ltd; China Petroleum and Chemical Corp
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-11-10
Anticipated expiration: 2033-05-23

Abstract

The utility model provides a gas absorption device for halide in hydrogen, wherein a first liquid storage tank and a second liquid storage tank are respectively used for storing a first absorption liquid and a second absorption liquid; the second channel and the fourth channel of the eight-way valve are respectively connected with the first quantitative ring, the third channel is connected with the first liquid storage tank, the fifth channel is connected with the absorption container, the sixth channel and the eighth channel are respectively connected with the second quantitative ring, and the seventh channel is connected with the second liquid storage tank; the eight-way valve is switchable between a first state in which the first and second passages communicate, the third and fourth passages communicate, the fifth and sixth passages communicate, the seventh and eighth passages communicate, and a second state in which the first and eighth passages communicate, the second and third passages communicate, the fourth and fifth passages communicate, the sixth and seventh passages communicate; by switching the first and second states of the eight-way valve, the gas absorbing device can selectively employ one of the first absorbing liquid and the second absorbing liquid to participate in the gas absorption of the halide in the hydrogen gas.

Description

Device for absorbing halide in hydrogen

Technical Field

The utility model relates to the technical field of gas analysis, in particular to a gas absorption device for halide in hydrogen.

Background

The hydrogen energy is used as secondary energy, has multiple advantages of various sources, zero terminal emission, wide application and the like, and the Fuel Cell Vehicle (FCV) is one of important carriers of the hydrogen energy. The FCV is an electric vehicle in which hydrogen releases electric energy through electrochemical catalytic conversion in a fuel cell (proton exchange membrane PEMFC is a core component) and then drives an automobile to run through the electric energy. The hydrogen industry used for FCV is different in hydrogen, and besides certain requirements on the purity of hydrogen, it is further required to control the content of trace impurities in the hydrogen, which affect the performance and life of the battery. The inorganic halide in the hydrogen gas has an irreversible effect on the performance of the hydrogen fuel cell, and the inorganic halide is adsorbed on the catalyst layer, so that the catalytic surface area is reduced, and the cell performance is reduced. The chloride promotes dissolution of the platinum by forming a soluble chloride complex and subsequent deposition in the fuel cell membrane. Potential sources include refrigerants and process cleaners used in chlor-alkali production processes. GB/T37244 fuel hydrogen for proton exchange membrane fuel cell automobile is formulated in 2018 in China, 13 impurity types and contents affecting cell performance are explicitly specified in standards, and the total halide content in the hydrogen is specified to be less than 0.05 mu mol/mol.

The inorganic halides mainly include hydrogen chloride, chlorine, hydrogen bromide, etc. The determination of inorganic halides in hydrogen requires a prior absorption of the sample. In HJ 549 ion chromatography for measuring hydrogen chloride in ambient air and waste gas, two 25ml impact type absorption bottles containing 10ml of water as absorption liquid are connected in series, and are connected with an air sampler to absorb hydrogen chloride in ambient air. GB/T37244 fuel hydrogen for proton exchange membrane fuel cell vehicle directly connects a hydrogen bottle with a gas washing bottle for pre-stage absorption. Patent document CN108072732a discloses a method for detecting trace hydrogen chloride in hydrogen, which uses a silica gel tube to connect a sampling port and a flowmeter, uses the silica gel tube to connect the flowmeter and two porous glass plate absorption bottles connected in series, and uses a porous glass plate absorption bottle of potassium hydroxide to absorb hydrogen chloride in hydrogen. Patent document CN110441412a discloses a method and a device for detecting trace hydrogen chloride in the gas phase of a hydrogen device, and the absorption device is similar to the above patent.

In general, the existing absorption device for measuring inorganic halides in hydrogen cannot form professional analysis equipment, and the temporarily built device cannot be automated, so that the hydrogen measurement requirement is difficult to meet.

Disclosure of Invention

It is a primary object of the present utility model to overcome at least one of the above-mentioned drawbacks of the prior art and to provide a device for absorbing halide in hydrogen gas which can realize switching of the absorption function based on different kinds of absorption liquids.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

according to one aspect of the present utility model, there is provided a gas absorption device for halides in hydrogen gas, comprising two liquid tanks, eight-way valves, two dosing rings and an absorption vessel; the two liquid storage tanks are respectively a first liquid storage tank and a second liquid storage tank and are respectively provided with a delivery pump, the first liquid storage tank and the second liquid storage tank are respectively used for storing a first absorption liquid and a second absorption liquid, and the two quantitative rings are respectively a first quantitative ring and a second quantitative ring; the eight channels of the eight-way valve are respectively a first channel to an eighth channel, the first channel is a discharge end, the second channel and the fourth channel are respectively connected to two ends of a first quantitative ring, the third channel is connected to a delivery pump of the first liquid storage tank, the fifth channel is connected to the absorption container, the sixth channel and the eighth channel are respectively connected to two ends of a second quantitative ring, and the seventh channel is connected to a delivery pump of the second liquid storage tank; the eight-way valve is configured to be switchable between a first state in which the first and second passages communicate, the third and fourth passages communicate, the fifth and sixth passages communicate, the seventh and eighth passages communicate, and a second state in which the first and eighth passages communicate, the second and third passages communicate, the fourth and fifth passages communicate, the sixth and seventh passages communicate; the gas absorption device is configured to selectively adopt one of the first absorption liquid and the second absorption liquid to participate in the gas absorption of halide in hydrogen, wherein the eight-way valve is in a first state when the first absorption liquid is adopted, and is in a second state when the second absorption liquid is adopted.

According to one embodiment of the utility model, wherein: the material of each liquid storage tank is a chemical inert material without background chlorine; and/or the volume of each liquid storage tank is 10-50 times of the volume of the absorption container.

According to one embodiment of the utility model, wherein: the first absorption liquid is ultrapure water; and/or, the second absorption liquid is an alkaline solution.

According to one embodiment of the utility model, wherein: the delivery pump is a high-pressure plunger pump; and/or the material of the conveying pump is a chemical inert material and is suitable for aqueous solution with the pH value of 0-14.

According to one embodiment of the utility model, the device further comprises a waste liquid tank connected to the first channel of the eight-way valve.

According to one embodiment of the utility model, the absorption vessel is connected to a flow meter.

According to one embodiment of the utility model, the flow range of the flowmeter is 0-1L/min, and the flow accuracy is less than or equal to 1%.

According to one embodiment of the utility model, the absorption vessel is an impact absorption vessel or a glass plate absorption vessel with a background chlorine content below a detection limit.

According to one embodiment of the utility model, each liquid line in the gas absorption device is a PEEK line.

According to one embodiment of the utility model, each gas line in the gas absorption device is a PTFE line or a silicone line lined with a PTFE line, respectively.

According to the technical scheme, the gas absorption device for the halide in the hydrogen provided by the utility model has the advantages and positive effects that:

the utility model provides a first liquid storage tank and a second liquid storage tank of a gas absorption device for halide in hydrogen, which are respectively used for storing a first absorption liquid and a second absorption liquid; the second channel and the fourth channel of the eight-way valve are respectively connected with the first quantitative ring, the third channel is connected with the first liquid storage tank, the fifth channel is connected with the absorption container, the sixth channel and the eighth channel are respectively connected with the second quantitative ring, and the seventh channel is connected with the second liquid storage tank; the eight-way valve is switchable between a first state in which the first and second passages communicate, the third and fourth passages communicate, the fifth and sixth passages communicate, the seventh and eighth passages communicate, and a second state in which the first and eighth passages communicate, the second and third passages communicate, the fourth and fifth passages communicate, the sixth and seventh passages communicate. Through the structural design, the gas absorption device can selectively adopt one of the first absorption liquid and the second absorption liquid to participate in the gas absorption of the halide in the hydrogen by switching the first state and the second state of the eight-way valve, and the liquid storage tank of the absorption container does not need to be replaced for applying different absorption liquids. Meanwhile, the utility model can add the absorption liquid into the absorption container by utilizing the two quantitative rings, thereby realizing the automation of adding the absorption liquid and avoiding the interference of impurities introduced by a manual quantitative device.

Drawings

Various objects, features and advantages of the present utility model will become more apparent from the following detailed description of the preferred embodiments of the utility model, when taken in conjunction with the accompanying drawings. The drawings are merely exemplary illustrations of the utility model and are not necessarily drawn to scale. In the drawings, like reference numerals refer to the same or similar parts throughout. Wherein:

FIG. 1 is a system schematic diagram illustrating a gas absorption device for halide in hydrogen in one mode according to an exemplary embodiment;

fig. 2 is a schematic system diagram of the gas absorption device shown in fig. 1 in another mode.

The reference numerals are explained as follows:

100. a first liquid storage tank;

110. a first transfer pump;

200. a second liquid storage tank;

210. a second transfer pump;

300. an eight-way valve;

301. a first channel;

302. a second channel;

303. a third channel;

304. a fourth channel;

305. a fifth channel;

306. a sixth channel;

307. a seventh channel;

308. an eighth channel;

310. a first metering ring;

320. a second dosing ring;

400. an absorption vessel;

410. a flow meter;

421. a third transfer pump;

422. a fourth infusion pump;

500. a hydrogen cylinder.

Detailed Description

Exemplary embodiments that embody features and advantages of the present utility model are described in detail in the following description. It will be understood that the utility model is capable of various modifications in various embodiments, all without departing from the scope of the utility model, and that the description and drawings are intended to be illustrative in nature and not to be limiting.

In the following description of various exemplary embodiments of the utility model, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary structures, systems, and steps in which aspects of the utility model may be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps may be utilized and structural and functional modifications may be made without departing from the scope of the present utility model. Moreover, although the terms "over," "between," "within," and the like may be used in this description to describe various exemplary features and elements of the utility model, these terms are used herein for convenience only, e.g., in terms of the orientation of the examples depicted in the drawings. Nothing in this specification should be construed as requiring a particular three-dimensional orientation of the structure in order to fall within the scope of the utility model.

Referring to fig. 1, a schematic system diagram of a halide-in-hydrogen gas absorption device according to the present utility model in one mode is representatively illustrated. In this exemplary embodiment, the gas absorption device proposed by the present utility model is described taking as an example the absorption of the halide applied to the hydrogen gas. Those skilled in the art will readily appreciate that many modifications, additions, substitutions, deletions, or other changes may be made to the specific embodiments described below in order to adapt the relevant designs of the present utility model to other types of gas absorbing processes, and such changes remain within the principles of the gas absorbing device set forth herein.

As shown in fig. 1, in one embodiment of the present utility model, the apparatus for absorbing halide in hydrogen gas according to the present utility model includes two liquid tanks, an eight-way valve 300, two dosing rings, and an absorption vessel 400. Wherein the eight-way valve 300 gate is shown in fig. 1 in a first state. Referring to fig. 2 in conjunction, a schematic system diagram of a gas absorbing device capable of embodying the principles of the present utility model is representatively illustrated in fig. 2 in another mode in which the eight-way valve 300 gate illustrated in fig. 2 is in a second state. The structure, connection manner and functional relationship of the main components of the gas absorbing device according to the present utility model will be described in detail below with reference to the above drawings.

As shown in fig. 1 and 2, in an embodiment of the present utility model, two liquid tanks are a first liquid tank 100 and a second liquid tank 200, respectively, the first liquid tank 100 is used for storing a first absorption liquid, the second liquid tank 200 is used for storing a second absorption liquid, and the two liquid tanks are respectively provided with a transfer pump, that is, the first liquid tank 100 is connected with a first transfer pump 110, and the second liquid tank 200 is connected with a second transfer pump 210. The two dosing rings are a first dosing ring 310 and a second dosing ring 320, respectively. The eight channels of the eight-way valve 300 gate are a first channel 301, a second channel 302, a third channel 303, a fourth channel 304, a fifth channel 305, a sixth channel 306, a seventh channel 307, and an eighth channel 308, respectively. Specifically, the first channel 301 is a discharge end, the second channel 302 and the fourth channel 304 are respectively connected to two ends of the first dosing ring 310, the third channel 303 is connected to the first delivery pump 110, the fifth channel 305 is connected to the absorption container 400, the sixth channel 306 and the eighth channel 308 are respectively connected to two ends of the second dosing ring 320, and the seventh channel 307 is connected to the second delivery pump 210. Accordingly, the eight-way valve 300 is switchable between a first state in which the first passage 301 and the second passage 302 communicate, the third passage 303 and the fourth passage 304 communicate, the fifth passage 305 and the sixth passage 306 communicate, and the seventh passage 307 and the eighth passage 308 communicate, and a second state. Further, in this second state, the first passage 301 and the eighth passage 308 communicate, the second passage 302 and the third passage 303 communicate, the fourth passage 304 and the fifth passage 305 communicate, and the sixth passage 306 and the seventh passage 307 communicate. On the basis, the gas absorption device provided by the utility model can selectively adopt one of the first absorption liquid and the second absorption liquid to participate in the gas absorption of the halide in the hydrogen, wherein the eight-way valve 300 is in a first state when the first absorption liquid is adopted, and the eight-way valve 300 is in a second state when the second absorption liquid is adopted.

Through the above structural design, the present utility model can selectively adopt one of the first absorption liquid and the second absorption liquid to participate in the gas absorption of the halide in the hydrogen by switching the first and the second states of the eight-way valve 300, without changing the liquid storage tank of the absorption container 400 in order to apply different absorption liquids. Meanwhile, the utility model can utilize two quantitative rings to add the absorption liquid into the absorption container 400, thereby realizing the automation of adding the absorption liquid and avoiding the interference of impurities introduced by a manual quantitative device.

Specifically, the conventional absorption device requires a manual addition of a fixed amount of absorption liquid to the absorption vessel, the operation is complicated, and the used quantitative device may introduce halide impurities, interfering with the measurement. The utility model adopts the quantitative ring to add the absorption liquid into the absorption container 400, realizes the automation of adding the absorption liquid, and does not need to use other quantitative appliances. Furthermore, conventional absorbent devices require removal of the absorbent container from the device for convenient cleaning. The present utility model adopts the eight-way valve 300 to switch between the first state and the second state, and can clean the absorption container 400 without disassembling the absorption container 400, and particularly, reference can be made to the following detailed description of the working principle and process of the present utility model. Furthermore, if a different kind of absorption liquid is to be used in the conventional absorption apparatus, a new absorption vessel and a new absorption liquid are required to be replaced. The present utility model adopts the switching of the eight-way valve 300 between the first state and the second state, and ensures the direct replacement of different kinds of absorption liquid without the need of replacing the absorption container 400.

In one embodiment of the present utility model, the material of the first liquid storage tank 100 may be a chemically inert material that does not contain background chlorine.

In an embodiment of the present utility model, the volume of the first liquid storage tank 100 may be 10 to 50 times, for example, 10 times, 20 times, 30 times, 50 times, etc., the volume of the absorption container 400. In some embodiments, the volume of the first liquid storage tank 100 may be less than 10 times the volume of the absorption container 400, or may be greater than 50 times the volume of the absorption container 400, for example, the volume of the first liquid storage tank 100 may be 9.5 times, 55 times, etc. the volume of the absorption container 400, which is not limited by the present embodiment.

In one embodiment of the present utility model, the material of the second reservoir 200 may be a chemically inert material that does not contain background chlorine.

In an embodiment of the present utility model, the volume of the second liquid storage tank 200 may be 10 to 50 times, for example, 10 times, 20 times, 30 times, 50 times, etc., the volume of the absorption vessel 400. In some embodiments, the volume of the second liquid storage tank 200 may be less than 10 times the volume of the absorption container 400, or may be greater than 50 times the volume of the absorption container 400, for example, the volume of the second liquid storage tank 200 may be 9.5 times, 55 times, etc. the volume of the absorption container 400, which is not limited by the present embodiment.

In one embodiment of the present utility model, the first absorption liquid may be ultrapure water. Through the design, the utility model can realize the cleaning of each liquid pipeline in the gas absorption device by using the first absorption liquid (particularly, the following detailed description of a plurality of functional modes of the gas absorption device can be seen).

In one embodiment of the present utility model, the second absorption liquid may be an alkaline solution. Further, the alkaline solution may be, for example, but not limited to, sodium hydroxide solution.

In one embodiment of the present utility model, the first transfer pump 110 may be a high pressure plunger pump.

In one embodiment of the present utility model, the material of the first transfer pump 110 may be a chemically inert material, and is suitable for an aqueous solution with a pH of 0-14.

In an embodiment of the present utility model, the second transfer pump 210 may be a high pressure plunger pump.

In one embodiment of the present utility model, the material of the second transfer pump 210 may be a chemically inert material, and is suitable for an aqueous solution with a pH of 0-14.

In an embodiment of the present utility model, the gas absorbing apparatus according to the present utility model may further include a waste liquid tank (not shown in the drawings) connected to the first passage 301 of the eight-way valve 300. Through the structural design, the utility model can avoid environmental pollution caused by the waste liquid discharged through the first channel 301.

As shown in fig. 1 and 2, in one embodiment of the present utility model, the absorption vessel 400 may be connected with a flow meter 410, and the flow meter 410 can be used to monitor the instantaneous flow of the sample gas in the absorption vessel 400, thereby maintaining a desired absorption rate.

Based on the structural design of the absorption vessel 400 to which the flow meter 410 is connected, in an embodiment of the present utility model, the flow range of the flow meter 410 may be 0-1L/min, and the flow accuracy is less than or equal to 1%.

As shown in fig. 1 and 2, in an embodiment of the present utility model, the absorption vessel 400 may be further connected with a collecting line, and a third pump 421 and a fourth pump 422 may be respectively provided on two branches of the collecting line for collecting the alkaline absorption liquid or discharging the cleaning liquid (e.g., the ultrapure water described above) in the absorption vessel 400, respectively. Through the structural design, the utility model adopts the pumping mode of the conveying pump, realizes the automation of collecting the absorption liquid and avoids the manual collection of the absorption liquid in the absorption container 400.

Based on the structural design that the third transfer pump 421 is disposed on the collecting pipe connected to the absorption vessel 400, in an embodiment of the present utility model, the third transfer pump 421 may be a high-pressure plunger pump.

Based on the structural design that the third transfer pump 421 is disposed on the collecting pipe connected to the absorption container 400, in an embodiment of the present utility model, the third transfer pump 421 may be made of a chemically inert material and is suitable for an aqueous solution with a pH value of 0-14.

Based on the structural design that the fourth transfer pump 422 is provided on the collecting pipe connected to the absorption vessel 400, in an embodiment of the present utility model, the fourth transfer pump 422 may be a high-pressure plunger pump.

Based on the structural design that the fourth transfer pump 422 is disposed on the collecting pipe connected to the absorption vessel 400, in an embodiment of the present utility model, the material of the fourth transfer pump 422 may be a chemically inert material, and is suitable for an aqueous solution with a pH value of 0-14.

In one embodiment of the present utility model, the absorber vessel 400 may be an impact absorber vessel 400 having a background chlorine content below a detection limit. In some embodiments, the absorber vessel 400 may also be a glass panel absorber vessel 400 having a background chlorine content below a detection limit.

In an embodiment of the present utility model, each liquid pipeline in the gas absorption device may be a PEEK pipeline.

In an embodiment of the present utility model, each gas line in the gas absorption device may be a PTFE line. In some embodiments, each gas pipeline in the gas absorption device may also be a silica gel pipeline lined with a PTFE pipeline.

Based on the above detailed description of several exemplary embodiments of the gas absorbing device for halide in hydrogen gas according to the present utility model, the operation principle and process of the present utility model will be briefly described.

When the first absorption liquid is used, ultrapure water is injected into the first reservoir tank 100 by taking the first absorption liquid as an example. The eight-way valve 300 is switched to the first state in which the first passage 301 and the second passage 302 communicate, the third passage 303 and the fourth passage 304 communicate, the fifth passage 305 and the sixth passage 306 communicate, and the seventh passage 307 and the eighth passage 308 communicate. Ultrapure water is introduced into the first metering ring 310 through the third passage 303 by the first feed pump 110, and the surplus liquid can flow to the first passage 301 through the second passage 302 to be discharged as a waste liquid. Then, the eight-way valve 300 is switched to the second state in which the first passage 301 and the eighth passage 308 communicate, the second passage 302 and the third passage 303 communicate, the fourth passage 304 and the fifth passage 305 communicate, and the sixth passage 306 and the seventh passage 307 communicate. The ultrapure water in the first dosing ring 310 is pressurized by the first delivery pump 110 into the absorption vessel 400 via the fifth passage 305. The instantaneous flow rate of the flow meter 410 was set to 1L/min, and the sample gas was shuttled to be absorbed by the absorbing liquid at a flow rate of 1L/min, and the absorption volume was 100L. After the completion of the absorption, the absorption liquid is received into the sample bottle 500 by the third transfer pump 421.

When the second absorbent is used, the alkaline solution is injected into the second reservoir 200, taking the second absorbent as an example. The eight-way valve 300 is switched to the second state in which the first passage 301 and the eighth passage 308 communicate, the second passage 302 and the third passage 303 communicate, the fourth passage 304 and the fifth passage 305 communicate, and the sixth passage 306 and the seventh passage 307 communicate. The alkaline solution is fed through the second transfer pump 210 via the seventh channel 307 into the second dosing ring 320, and the excess liquid can flow to the first channel 301 via the eighth channel 308 to be discharged as waste liquid. Then, the eight-way valve 300 is switched to the first state in which the first passage 301 and the second passage 302 communicate, the third passage 303 and the fourth passage 304 communicate, the fifth passage 305 and the sixth passage 306 communicate, and the seventh passage 307 and the eighth passage 308 communicate. The alkaline solution in the second dosing ring 320 is pressurized by the second transfer pump 210 via the fifth channel 305 into the absorption vessel 400. The instantaneous flow rate of the flow meter 410 was set to 1L/min, and the sample gas was shuttled to be absorbed by the absorbing liquid at a flow rate of 1L/min, and the absorption volume was 100L. After the completion of the absorption, the absorption liquid is received into the sample bottle 500 by the third transfer pump 421.

When it is necessary to clean each liquid line and the absorption vessel 400 in the gas absorption device, the eight-way valve 300 may be switched to the second state described above. The volume of the cleaning liquid of the first pump 110 is set by using the ultrapure water in the first tank 100 as the cleaning liquid, and the ultrapure water is introduced into the first dosing ring 3101 through the third passage 303 and the second passage 302 by the first pump 110, introduced into the fifth passage 305 from the fourth passage 304, and then pumped into the absorption container 400. At this time, the liquid line and the absorption vessel 400 are rinsed with ultrapure water. After the cleaning is completed, the ultrapure water may be discharged through the fourth transfer pump 422. Preferably, the above-described washing steps may be repeated a plurality of times (e.g., without limitation, three times) to complete the washing of the liquid line and the absorption vessel 400.

It should be noted herein that the halide in hydrogen gas absorption devices shown in the drawings and described in this specification are merely a few examples of the wide variety of gas absorption devices that can employ the principles of the present utility model. It should be clearly understood that the principles of the present utility model are in no way limited to any details or any components of the gas absorbing apparatus shown in the drawings or described in this specification.

In summary, the present utility model proposes that the first and second liquid tanks 200 of the gas absorbing device for halide in hydrogen are respectively used for storing the first and second absorbing liquids; the second and fourth channels 304 of the eight-way valve 300 are respectively connected to the first dosing ring 310, the third channel 303 is connected to the first reservoir 100, the fifth channel 305 is connected to the absorption vessel 400, the sixth and eighth channels 308 are respectively connected to the second dosing ring 320, and the seventh channel 307 is connected to the second reservoir 200; the eight-way valve 300 is switchable between a first state in which the first and second passages 302 communicate, the third and fourth passages 304 communicate, the fifth and sixth passages 306 communicate, and the seventh and eighth passages 308 communicate, and a second state in which the first and eighth passages 308 communicate, the second and third passages 303 communicate, the fourth and fifth passages 305 communicate, and the sixth and seventh passages 307 communicate. Through the above structural design, the present utility model can selectively adopt one of the first absorption liquid and the second absorption liquid to participate in the gas absorption of the halide in the hydrogen by switching the first and the second states of the eight-way valve 300, without changing the liquid storage tank of the absorption container 400 in order to apply different absorption liquids. Meanwhile, the utility model can utilize two quantitative rings to add the absorption liquid into the absorption container 400, thereby realizing the automation of adding the absorption liquid and avoiding the interference of impurities introduced by a manual quantitative device.

Exemplary embodiments of the gas absorbing device for halides in hydrogen gas according to the present utility model are described and/or illustrated in detail above. Embodiments of the utility model are not limited to the specific embodiments described herein, but rather, components and/or steps of each embodiment may be utilized independently and separately from other components and/or steps described herein. Each component and/or each step of one embodiment may also be used in combination with other components and/or steps of other embodiments. When introducing elements/components/etc. that are described and/or illustrated herein, the terms "a," "an," and "the" are intended to mean that there are one or more of the elements/components/etc. The terms "comprising," "including," and "having" are intended to be inclusive and mean that there may be additional elements/components/etc., in addition to the listed elements/components/etc. Furthermore, the terms "first" and "second" and the like in the claims and in the description are used for descriptive purposes only and not for numerical limitation of their subject matter.

While the utility model has been described in terms of various specific embodiments, those skilled in the art will recognize that the utility model can be practiced with modification within the spirit and scope of the claims.

Claims

1. A gas absorption device for halide in hydrogen, characterized in that:

comprises two liquid storage tanks, eight-way valves, two quantitative rings and an absorption container;

the two liquid storage tanks are respectively a first liquid storage tank and a second liquid storage tank and are respectively provided with a delivery pump, the first liquid storage tank and the second liquid storage tank are respectively used for storing a first absorption liquid and a second absorption liquid, and the two quantitative rings are respectively a first quantitative ring and a second quantitative ring;

the eight channels of the eight-way valve are respectively a first channel to an eighth channel, the first channel is a discharge end, the second channel and the fourth channel are respectively connected to two ends of a first quantitative ring, the third channel is connected to a delivery pump of the first liquid storage tank, the fifth channel is connected to the absorption container, the sixth channel and the eighth channel are respectively connected to two ends of a second quantitative ring, and the seventh channel is connected to a delivery pump of the second liquid storage tank;

the eight-way valve is configured to be switchable between a first state in which the first and second passages communicate, the third and fourth passages communicate, the fifth and sixth passages communicate, the seventh and eighth passages communicate, and a second state in which the first and eighth passages communicate, the second and third passages communicate, the fourth and fifth passages communicate, the sixth and seventh passages communicate;

the gas absorption device is configured to selectively adopt one of the first absorption liquid and the second absorption liquid to participate in the gas absorption of halide in hydrogen, wherein the eight-way valve is in a first state when the first absorption liquid is adopted, and is in a second state when the second absorption liquid is adopted.

2. The apparatus for absorbing halide in hydrogen gas as recited in claim 1, wherein:

the material of each liquid storage tank is a chemical inert material without background chlorine; and/or

The volume of each liquid storage tank is 10-50 times of the volume of the absorption container.

3. The apparatus for absorbing halide in hydrogen gas as recited in claim 1, wherein:

the first absorption liquid is ultrapure water; and/or

The second absorption liquid is alkaline solution.

4. The apparatus for absorbing halide in hydrogen gas as recited in claim 1, wherein:

the delivery pump is a high-pressure plunger pump; and/or

The material of the conveying pump is chemical inert material and is suitable for aqueous solution with pH value of 0-14.

5. The apparatus for absorbing halide gases in hydrogen as recited in claim 1, further comprising a waste tank connected to the first passage of the eight-way valve.

6. The apparatus for absorbing halide gases in hydrogen as recited in claim 1, wherein a flowmeter is connected to the absorbing container.

7. The device for absorbing halide in hydrogen as recited in claim 6, wherein the flow rate of the flow meter is in a range of 0 to 1L/min, and the flow rate accuracy is not more than 1%.

8. The apparatus according to claim 1, wherein the absorption vessel is an impact absorption vessel or a glass plate absorption vessel having a background chlorine content lower than a detection limit.

9. The apparatus according to claim 1, wherein each of the liquid lines in the apparatus is a PEEK line.

10. The apparatus according to claim 1, wherein each gas line in the apparatus is a PTFE line or a silicone line lined with a PTFE line.