Gas chromatograph gas analysis system tail gas purification device and gas analysis system
By designing a gas chromatograph exhaust purification device containing cuprous chloride solution and sulfuric acid solution, the problem of incomplete treatment of harmful substances in the exhaust gas of the gas chromatograph was solved, efficient exhaust purification was achieved, ensuring that the discharged exhaust gas complies with environmental protection standards, and improving the air quality and environmental safety in the laboratory.
Patent Information
- Application Number
- CN202420974300.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-05-08
AI Technical Summary
The exhaust gas produced by the gas chromatograph contains harmful components, such as CO, H2S, SO2, C2H2, C2H4 and other high-grade hydrocarbons and acid gases. Traditional exhaust gas treatment methods cannot completely eliminate these harmful substances, resulting in environmental pollution and human health hazards.
A gas chromatograph gas analysis system exhaust gas purification device is designed, including a first purification part and a second purification part. The first purification part performs the first purification through the cuprous chloride solution to remove harmful substances such as CO, H2S, SO2, C2H2, C2H4 in the exhaust gas; the second purification part further purifies through the sulfuric acid solution to remove the remaining ammonia gas to ensure that no secondary pollution occurs during the treatment process.
It has achieved efficient absorption and purification of medium and high-grade hydrocarbons and acid gases in the exhaust gas of the gas chromatograph, solved the problem of incomplete absorption of traditional exhaust gas treatment methods, ensured that the final discharged exhaust gas complied with environmental protection standards, and improved the air quality and environmental safety in the laboratory.
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Figure CN222738836U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of industrial waste gas treatment, and in particular to a tail gas purification device for a gas chromatograph gas analysis system and a gas analysis system. Background Art
[0002] When analyzing gas samples, gas chromatographs produce tail gas, which usually contains harmful components, including CO, H2S, SO2, C2H2, C2H4 and other advanced hydrocarbons and acidic gases, which may pollute the environment. Direct emission of tail gas will pollute the environment and endanger human health. Traditional tail gas treatment methods cannot completely eliminate these harmful substances, so a more effective treatment method is needed. Utility Model Content
[0003] The present disclosure aims to solve at least one of the technical problems existing in the prior art or related art.
[0004] To this end, in a first aspect of the present disclosure, a tail gas purification device for a gas chromatograph gas analysis system is provided, comprising a first purification part and a second purification part, wherein the first purification part is connected to the tail gas outlet of the gas chromatograph through an air intake pipeline, and the second purification part is connected to the first purification part through a gas pipeline, and the tail gas purified by the second purification part is discharged from the second purification part through an exhaust pipeline, wherein the first purification part contains a cuprous chloride solution, and the second purification part contains a sulfuric acid solution, wherein:
[0005] One end of the air inlet pipeline is arranged below the liquid surface of the cuprous chloride solution, one end of the gas pipeline arranged in the first purification part is arranged above the liquid surface of the cuprous chloride solution, and one end of the gas pipeline arranged in the second purification part is arranged below the liquid surface of the sulfuric acid solution.
[0006] In a feasible embodiment, the first purification part includes a gas washing bottle and a sealing member, the cuprous chloride solution is arranged in the gas washing bottle, and the cuprous chloride solution occupies one half to two thirds of the volume of the gas washing bottle, and the sealing member is used to seal the gas washing bottle.
[0007] In a feasible implementation manner, the cuprous chloride solution is configured as a cuprous chloride ammonia solution or a cuprous chloride salt solution.
[0008] In a feasible implementation manner, a filtering device is further included, wherein the filtering device is connected to the exhaust pipeline and is used to filter the exhaust gas purified by the second purification unit.
[0009] In a feasible embodiment, the filter device includes a filter body, and an air inlet connector and an exhaust connector are respectively provided at both ends of the filter body, and quartz wool, activated carbon and molecular sieve are sequentially provided inside the filter body from the air inlet connector side to the exhaust connector side.
[0010] In a feasible implementation manner, the quartz wool is respectively disposed at one end of the air inlet connector and one end of the air outlet connector inside the filter body.
[0011] In a possible implementation manner, the filter device is connected to the exhaust pipe via a first hose.
[0012] In a feasible implementation manner, a deformation pipeline is provided on the exhaust pipeline arranged outside the second purification part.
[0013] In a feasible implementation manner, the air inlet connector and the air outlet connector are configured as quick connectors.
[0014] In a second aspect of the present disclosure, a gas chromatograph gas analysis system is provided, comprising the above-mentioned gas chromatograph gas analysis system tail gas purification device.
[0015] Compared with the prior art, the present disclosure includes at least the following beneficial effects: the exhaust gas of the gas chromatograph enters the first purification part through the air intake pipeline for the first purification to remove harmful substances such as CO, H2S, SO2, C2H2, C2H4 and other high-level hydrocarbons and acidic gases in the exhaust gas, and the exhaust gas purified by the first purification part enters the second purification part through the exhaust pipeline to fully react below the liquid level to remove the remaining ammonia, and no secondary pollution is generated during the treatment process, which meets environmental protection requirements. The present disclosure can efficiently absorb the exhaust gas containing high-level hydrocarbons and acidic gases such as CO, H2S, SO2, C2H2, C2H4, etc., solves the problem of incomplete exhaust gas absorption in the existing gas chromatograph exhaust purification device, achieves the purpose of purifying the exhaust gas, ensures that the final exhaust gas discharged meets environmental protection standards, improves the air quality in the laboratory, and protects the health of the experimenters and the safety of the environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the exemplary embodiments below. The accompanying drawings are only for the purpose of illustrating exemplary embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:
[0019] Figure 1 It is a schematic diagram of the structure of the first purification unit, the second purification unit and the filtering device disclosed in the present invention;
[0020] Figure 2 It is a schematic diagram of the structure of the first purification unit and the second purification unit disclosed in the present invention;
[0021] Figure 3 It is a schematic diagram of the structure of the filtering device disclosed in the present invention.
[0022] in, Figures 1 to 3 The corresponding relationship between the reference numerals and the component names is as follows: 1-first purification section; 10-cuprous chloride solution; 11-gas washing bottle; 12-sealing member; 2-second purification section; 20-sulfuric acid solution; 3-intake pipe; 4-gas pipe; 41-filter element body; 42-intake connector; 43-exhaust connector; 44-quartz wool; 45-activated carbon; 46-molecular sieve; 5-exhaust pipe; 6-first hose; 7-deformation pipe. DETAILED DESCRIPTION
[0023] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.
[0024] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.
[0025] At present, when analyzing gas samples, gas chromatographs produce tail gas, which usually contains harmful components, including CO, H2S, SO2, C2H2, C2H4 and other advanced hydrocarbons and acidic gases, which may pollute the environment. Direct emission of tail gas will pollute the environment and endanger human health. Traditional tail gas treatment methods cannot completely eliminate these harmful substances, so a more effective treatment method is needed.
[0026] Based on this, the embodiment of the present disclosure provides a tail gas purification device for a gas chromatograph gas analysis system. The tail gas of the gas chromatograph enters the first purification part through the air intake pipeline for the first purification to remove harmful substances such as CO, H2S, SO2, C2H2, C2H4 and other high-level hydrocarbons and acidic gases in the tail gas. The tail gas purified by the first purification part enters the second purification part through the exhaust pipeline to fully react below the liquid level to remove the remaining ammonia. No secondary pollution will be generated during the treatment process, which meets environmental protection requirements. The present disclosure can efficiently absorb tail gas containing high-level hydrocarbons such as CO, H2S, SO2, C2H2, C2H4 and acidic gases, solves the problem of incomplete tail gas absorption in the existing tail gas purification device of the gas chromatograph, achieves the purpose of purifying the tail gas, ensures that the final exhaust gas discharged meets environmental protection standards, improves the air quality in the laboratory, and protects the health of the experimenters and the safety of the environment.
[0027] The tail gas purification device of the gas chromatograph gas analysis system is described in detail by means of specific embodiments below:
[0028] Reference Figures 1 to 3 As shown, in a first aspect of the present disclosure, a tail gas purification device for a gas chromatograph gas analysis system is provided, comprising a first purification part 1 and a second purification part 2, wherein the first purification part 1 is connected to the tail gas outlet of the gas chromatograph through an air intake pipe 3, and the second purification part 2 is connected to the first purification part 1 through a gas pipe 4, and the tail gas purified by the second purification part 2 is discharged from the second purification part 2 through an exhaust pipe 5, and a cuprous chloride solution 10 is contained in the first purification part 1, and a sulfuric acid solution 20 is contained in the second purification part 2, wherein one end of the air intake pipe 3 is arranged below the liquid level of the cuprous chloride solution 10, one end of the gas pipe 4 arranged in the first purification part 1 is arranged above the liquid level of the cuprous chloride solution 10, and one end of the gas pipe 4 arranged in the second purification part 2 is arranged below the liquid level of the sulfuric acid solution 20.
[0029] The tail gas of the gas chromatograph disclosed in the present invention enters the first purification part through the air inlet pipeline, and is passed into the washing bottle below the liquid level for the first purification to remove harmful substances such as CO, H2S, SO2, C2H2, C2H4 and other high-level hydrocarbons and acidic gases in the tail gas. The main principle is: CO and cuprous chloride react to form an unstable complex Cu2Cl2·2CO, and the reaction can be represented by the following chemical equation: Cu2Cl2+2CO→Cu2Cl2·2CO. In an ammonia solution, it further reacts: Cu2Cl2·2CO+4NH3+2H2O→Cu2(COONH4)2+2NH4Cl. Because ammonia water is highly volatile, the remaining gas after the cuprous chloride solution 10 absorbs CO is mixed with ammonia. Therefore, the tail gas that needs to be purified by the first purification part enters the second purification part below the liquid level through the exhaust pipeline for sufficient reaction to remove the remaining ammonia. No secondary pollution will be generated during the treatment process, which meets environmental protection requirements. The present invention can efficiently absorb tail gas containing high-grade hydrocarbons and acidic gases such as CO, H2S, SO2, C2H2, C2H4, etc., solves the problem of incomplete tail gas absorption in existing gas chromatograph tail gas purification devices, achieves the purpose of purifying tail gas, ensures that the final exhaust gas emissions meet environmental protection standards, improves the air quality in the laboratory, and protects the health of experimenters and the safety of the environment.
[0030] In some embodiments, the first purification unit 1 includes a washing bottle 11 and a sealing member 12 , the cuprous chloride solution 10 is disposed in the washing bottle 11 , and the cuprous chloride solution 10 occupies one-half to two-thirds of the volume of the washing bottle 11 , and the sealing member 12 is used to seal the washing bottle 11 .
[0031] In this embodiment, the seal 12 is used to seal the gas washing bottle 11. The seal of the present disclosure can be made of rubber, resin and other materials. The present disclosure is specifically set as a rubber plug. The gas washing bottle 11 can be set as a transparent glass bottle to facilitate observation of the liquid level in the bottle. The liquid level of the cuprous chloride solution 10 in the gas washing bottle 11 is set to one-half to two-thirds of the volume of the gas washing bottle 11, so that the purified tail gas has space to flow out. When the liquid level of the cuprous chloride solution 10 is lower than one-half, the tail gas purification effect is poor.
[0032] In some embodiments, the cuprous chloride solution 10 is set to be a cuprous chloride ammonia solution or a cuprous chloride salt solution. In this embodiment, the cuprous chloride solution 10 can be a cuprous chloride ammonia solution or a cuprous chloride salt solution. Among them, the cuprous chloride ammonia solution has a better tail gas purification effect than the cuprous chloride salt solution, and the present disclosure specifically uses the cuprous chloride ammonia solution.
[0033] In some embodiments, a filtering device is further included, which is connected to the exhaust pipe 5 and is used to filter the exhaust gas purified by the second purification unit 2 .
[0034] In this embodiment, the exhaust gas purified by the first purification unit 1 and the second purification unit 2 still has certain humidity and impurities different from those outside the chromatograph. The purified exhaust gas is further filtered by a filtering device to achieve a higher harmlessness standard.
[0035] In some embodiments, the filtering device includes a filter body 41, and an air inlet connector 42 and an exhaust connector 43 are respectively provided at both ends of the filter body 41, and quartz wool 44, activated carbon 45 and molecular sieve 46 are sequentially provided inside the filter body 41 from the side of the air inlet connector 42 to the side of the exhaust connector 43.
[0036] In this embodiment, an air intake connector 42 and an exhaust connector 43 are respectively provided at both ends of the filter element body 41. Furthermore, the air intake connector 42 and the exhaust connector 43 are configured as quick connectors to facilitate quick disassembly and assembly, thereby improving the equipment. Among them, the air intake connector 42 is connected to the exhaust pipeline 5, and the exhaust gas purified by the first purification unit 1 and the second purification unit 2 enters the filter element body 41 through the air intake connector 42 to contact the quartz wool 44 to adsorb the exhaust gas substances, thereby reducing unnecessary interference. Furthermore, in some embodiments, quartz wool 44 is respectively provided at one end of the air intake connector 42 and one end of the exhaust connector 43 inside the filter element body 41 of the present disclosure to enhance the adsorption effect. The front half of the middle part is filled with activated carbon 45, and the rear half is filled with molecular sieve 46 to deeply dry and purify the exhaust gas, thereby further enhancing the filtering effect of the exhaust gas and reducing the harm of the exhaust gas. During specific use, the chromatograph exhaust gas enters the first purification part 1 through the air inlet pipe 3, and after the reaction, enters the second purification part 2 through the gas pipe 4 for full reaction. After the reaction, it enters the filter element body 41 through the exhaust pipe 5, passes through the quartz wool 44, and firstly the activated carbon 45 absorbs most of the remaining unreacted substances, and then the molecular sieve 46 absorbs the remaining organic matter. Finally, the exhaust gas passes through the quartz wool 44 again and is discharged from the exhaust connector 43. The exhaust connector 43 can be connected to the purified gas exhaust pipe to achieve thorough purification.
[0037] In some embodiments, the filter device is connected to the exhaust pipe 5 via a first hose 6 to facilitate adjustment of the relative position of the filter device and the second purification unit 2 for easy installation and placement.
[0038] In some embodiments, a deformation pipe 7 is provided on the exhaust pipe 5 disposed outside the second purification unit 2 to adjust the shape of the exhaust pipe 5 and adjust the air guide path of the exhaust pipe 5, so as to improve the environmental adaptability of the present disclosure. The deformation pipe 7 of the present disclosure can be a metal bellows, a plastic bellows, a rubber tube, etc., and the present disclosure specifically uses a rubber tube.
[0039] In a second aspect of the present disclosure, a gas chromatograph gas analysis system is provided, comprising the above-mentioned gas chromatograph gas analysis system tail gas purification device.
[0040] In the present disclosure, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; the term "plurality" refers to two or more, unless otherwise expressly defined. The terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.
[0041] In the description of the present disclosure, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left", "right", "front", "back", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be understood as a limitation on the present disclosure.
[0042] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0043] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.
Claims
1. A tail gas purification device for a gas chromatograph gas analysis system, characterized in that: It includes a first purification part and a second purification part, wherein the first purification part is connected to the tail gas outlet of the gas chromatograph through an air inlet pipeline, and the second purification part is connected to the first purification part through a gas pipeline, and the tail gas purified by the second purification part is discharged from the second purification part through an exhaust pipeline, the first purification part contains a cuprous chloride solution, and the second purification part contains a sulfuric acid solution, wherein: One end of the air inlet pipeline is arranged below the liquid surface of the cuprous chloride solution, one end of the gas pipeline arranged in the first purification part is arranged above the liquid surface of the cuprous chloride solution, and one end of the gas pipeline arranged in the second purification part is arranged below the liquid surface of the sulfuric acid solution.
2. The tail gas purification device of the gas chromatograph gas analysis system according to claim 1, characterized in that: The first purification part includes a gas washing bottle and a sealing member, the cuprous chloride solution is arranged in the gas washing bottle, and the cuprous chloride solution occupies one half to two thirds of the volume of the gas washing bottle, and the sealing member is used to seal the gas washing bottle.
3. The tail gas purification device of the gas chromatograph gas analysis system according to claim 1, characterized in that: The cuprous chloride solution is configured as a cuprous chloride ammonia solution or a cuprous chloride salt solution.
4. The tail gas purification device of the gas chromatograph gas analysis system according to claim 1, characterized in that: It also includes a filtering device, which is connected to the exhaust pipeline and is used to filter the exhaust gas purified by the second purification unit.
5. The tail gas purification device of the gas chromatograph gas analysis system according to claim 4, characterized in that: The filter device comprises a filter body, an air inlet joint and an air exhaust joint are respectively arranged at both ends of the filter body, and quartz wool, activated carbon and molecular sieve are arranged in sequence inside the filter body from one side of the air inlet joint to the other side of the air exhaust joint.
6. The tail gas purification device of the gas chromatograph gas analysis system according to claim 5, characterized in that: The quartz wool is respectively arranged at one end of the air inlet joint and one end of the air outlet joint inside the filter body.
7. The tail gas purification device of the gas chromatograph gas analysis system according to claim 4, characterized in that: The filter device is connected to the exhaust pipeline via a first hose.
8. The tail gas purification device of the gas chromatograph gas analysis system according to claim 1, characterized in that: A deformation pipeline is provided on the exhaust pipeline arranged outside the second purification part.
9. The tail gas purification device of the gas chromatograph gas analysis system according to claim 5, characterized in that: The air inlet connector and the air exhaust connector are configured as quick connectors.
10. A gas chromatograph gas analysis system, characterized in that: A tail gas purification device for a gas chromatograph gas analysis system comprising any one of claims 1 to 9.