Gas chromatography tail gas purification device

Abstract

The utility model relates to the technical field of gas chromatographs, and discloses a gas chromatography tail gas purification device which comprises a device box body, and a gas inlet pipe is arranged at the top end of the device box body. When the gas chromatography tail gas purification device is used and exhausted tail gas contains volatile organic compounds, the first valve can be closed, the second valve can be opened at the same time, and the tail gas is guided into alkali liquor in the second treatment box body through the second branch pipe and the second connecting pipe by the three-way pipe; harmful substances in the tail gas containing volatile organic compounds are absorbed and purified, if the discharged tail gas is low-concentration organic waste gas, the second valve can be closed, the first valve can be opened, the tail gas is guided into the first treatment box through the first connecting pipe, and an internal activated carbon filter element is utilized; harmful substances in the tail gas can be adsorbed and purified, and the integrated purification device solves the problem that tail gas with different components is inconvenient to adjust and purify.

Description

Technical Field

[0001] The utility model relates to the technical field of gas chromatographs, and particularly relates to a gas chromatograph tail gas purification device. Background Technique

[0002] A gas chromatograph is an instrument that uses chromatographic separation technology and detection technology to qualitatively and quantitatively analyze complex mixtures of multiple components. When in use, after the analysis sample is vaporized in the injection port, it is carried into the chromatographic column by the carrier gas. Through a chromatographic column with different retention properties for the components in the mixture to be detected, each component is separated and sequentially introduced into the detector to obtain the detection signals of each component. According to the order of introduction into the detector, by comparison, it can be distinguished what components are, and the content of each component can be calculated according to the peak height or peak area. It is widely used in fields such as chemistry, petroleum, food, and environmental protection. A large amount of waste gas, including different types of volatile organic substances and gases, such as methane, ethylene, propane, etc., will be generated during the working process of the gas chromatograph. In order to reduce the pollution of its exhaust gas, a gas chromatograph tail gas purification device needs to be used to assist in purifying the exhaust gas produced.

[0003] However, when the gas chromatograph tail gas purification device is used to purify the waste gas generated during the use of the gas chromatograph, most of the same device can only treat some tail gases with fixed components. When treating tail gases with different components, different purification devices need to be replaced for purification use, and the purification process is relatively cumbersome, which has deficiencies and is not convenient for adjusting and purifying tail gases with different components.

[0004] Now, a new type of gas chromatograph tail gas purification device is proposed to solve the above deficiencies. Content of the Utility Model

[0005] The purpose of the utility model is to provide a gas chromatograph tail gas purification device to solve the problem of inconvenient adjustment and purification of tail gases with different components proposed in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A gas chromatograph tail gas purification device, including a device box body, an air inlet pipe is arranged at the top of the device box body, and an adjustment structure capable of replacing the purification method corresponding to different tail gases is arranged inside the device box body;

[0007] The adjusting structure includes a first treatment box, an activated carbon filter element, a first connecting pipe, a first valve, a first branch pipe, an induced draft fan, a second branch pipe, a second valve, a second exhaust pipe, a second treatment box body and a second connecting pipe. The first treatment box is fixed to the left side inside the device box body, and the activated carbon filter element is fixed inside the first treatment box. The first connecting pipe is fixed to the top end of the first treatment box. A three-way pipe is arranged at the top end of the device box body, and the left side of the bottom end of the three-way pipe is fixed with a first branch pipe. The bottom end of the first branch pipe is installed and fixed with a first valve. The right side of the bottom end of the three-way pipe is fixed with a second branch pipe, and the bottom end of the second branch pipe is installed and fixed with a second valve. The second treatment box body is fixed to the right side inside the device box body, and alkali liquor is arranged inside the second treatment box body. The bottom end of the second valve is installed and fixed with a second connecting pipe. The bottom end of the first treatment box is fixed with a first exhaust pipe. The right side of the top end of the second treatment box body is fixed with a second exhaust pipe.

[0008] Preferably, the top end of the first connecting pipe penetrates through the inside of the top end of the device box body and is installed and fixed with the bottom end of the first valve. The bottom end of the second connecting pipe penetrates through the inside of the top ends of the device box body and the second treatment box body respectively. The three-way pipe is communicated with the inside of the first treatment box through the first branch pipe and the first connecting pipe. The three-way pipe is communicated with the inside of the second treatment box body through the second branch pipe and the second connecting pipe.

[0009] Preferably, the second exhaust pipe is communicated with the inside of the second treatment box body. The top end of the second exhaust pipe penetrates through the inside of the top end of the device box body. The first exhaust pipe is communicated with the inside of the first treatment box. The bottom end of the first exhaust pipe penetrates through the inside of the bottom end of the device box body.

[0010] Preferably, a liquid adding pipe is arranged at the top right side of the device box body, and a fixing cylinder is fixed to the top end of the liquid adding pipe. A rotary cover is arranged at the top end of the fixing cylinder. The left side of the liquid adding pipe penetrates through the inside of the right sides of the device box body and the second treatment box body respectively. A clamping groove is opened inside the top end of the fixing cylinder. A filter cylinder is arranged inside the fixing cylinder. The liquid adding pipe is communicated with the inside of the second treatment box body.

[0011] Preferably, external threads are arranged at the top end of the fixing cylinder, and the rotary cover is rotatably connected to the top end of the outside of the fixing cylinder. The fixing cylinder is communicated with the inside of the liquid adding pipe.

[0012] Preferably, a corrugated hose is arranged on the left side of the air inlet pipe. A second connecting flange is fixed to the left side outside the air inlet pipe. The right side and the bottom end of the corrugated hose are respectively fixed with a first connecting flange. A connecting bolt is arranged on the right side of the second connecting flange, and a connecting nut is arranged on the left side of the right first connecting flange. A drain pipe is fixed to the bottom end of the second treatment box body, and the bottom end of the drain pipe penetrates through the inside of the bottom end of the device box body and is fixed with an opening and closing valve.

[0013] Preferably, the left sides of the connecting bolts respectively penetrate through the interiors of the second connecting flange and the first connecting flange. The connecting nuts are rotatably connected to the outsides of the connecting bolts. Four groups of the connecting bolts and the connecting nuts are annularly and equidistantly arranged on the second connecting flange and the first connecting flange respectively. The corrugated hose is communicated with the interior of the air inlet pipe.

[0014] Preferably, an induced draft fan is fixed to the top end of the three-way pipe. The bottom end of the air inlet pipe is fixedly connected to the top end of the induced draft fan. A front door is fixedly installed at the front end of the device box body. Legs are respectively fixed at the four corners of the bottom end of the device box body, and moving wheels are fixed to the bottom ends of the legs.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows: This gas chromatograph tail gas purification device not only realizes convenient adjustment and purification treatment of tail gases with different components, realizes convenient addition of purification media inside the device, but also realizes convenient installation and fixation between the purification device and the exhaust pipe of the gas chromatograph.

[0016] (1) By providing a device box body, a first treatment box, an activated carbon filter element, a first connecting pipe, a first valve, a first branch pipe, a second branch pipe, a second valve, a three-way pipe, a second exhaust pipe, a second treatment box body, a liquid discharge pipe, and a second connecting pipe, according to the components of the discharged tail gas, when the discharged tail gas contains volatile organic compounds, the first valve can be closed and the second valve can be opened simultaneously, and then the induced draft fan can be controlled to start, and the tail gas can be drawn into the three-way pipe through the air inlet pipe. Then, the tail gas is introduced into the second connecting pipe through the second branch pipe by the three-way pipe, and then introduced into the lye inside the second treatment box body through the second connecting pipe. The harmful substances in the tail gas containing volatile organic compounds are absorbed and purified by using the lye. The purified tail gas can be led out from the liquid level inside the second treatment box body and discharged through the second exhaust pipe. If the discharged tail gas is low-concentration organic waste gas, the second valve can be closed and the first valve can be opened simultaneously, and the tail gas is introduced into the interior of the first treatment box through the three-way pipe, the first branch pipe, and the first connecting pipe. By using the high specific surface area and strong adsorption property of the activated carbon filter element inside the first treatment box, the harmful substances in the tail gas can be adsorbed and purified. The integrated purification device can flexibly select the purification treatment method according to the components of the discharged tail gas, and improve the purification treatment efficiency of the gas chromatograph tail gas.

[0017] (2) By providing a device box body, a second treatment box body, a rotary cover, a fixed cylinder, a liquid adding pipe, a liquid discharging pipe, a filter cartridge and a card slot, during the use of the device, when replacing the lye used for internal treatment and purification of the second treatment box body, after discharging the lye inside the second treatment box body through the liquid discharging pipe, the rotary cover can be unscrewed, and then the prepared lye can be introduced through the filter cartridge. The provided filter cartridge can assist in filtering and removing some particulate impurities in the prepared lye, improving the purity of the lye and facilitating the addition of the purification medium inside the device;

[0018] (3) By providing a device box body, an air inlet pipe, a corrugated hose, a first connecting flange, a second connecting flange, connecting bolts and connecting nuts, when the purification device is connected and used with a gas chromatograph, after installing and fixing the corrugated hose to the exhaust pipe of the gas chromatograph by using the first connecting flange with connecting bolts and connecting nuts, the provided corrugated hose can connect and introduce the tail gas into the air inlet pipe to enter the device for treatment. At the same time, the provided corrugated hose can make the device and the gas chromatograph be in a flexible connection, facilitating the flexible adjustment of the positions between the purification device and the gas chromatograph. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a front sectional structure schematic diagram of the present utility model;

[0020] Figure 2 is a top view structure schematic diagram of the device box body of the present utility model;

[0021] Figure 3 is a front view structure schematic diagram of the corrugated hose of the present utility model;

[0022] Figure 4 is a front view partial sectional enlarged structure schematic diagram of the fixed cylinder of the present utility model.

[0023] In the figure: 1, moving wheels; 2, legs; 3, device box body; 4, first treatment box; 5, activated carbon filter element; 6, first connecting pipe; 7, first valve; 8, air inlet pipe; 9, first branch pipe; 10, induced draft fan; 11, second branch pipe; 12, second valve; 13, tee; 14, second exhaust pipe; 15, rotary cover; 16, fixed cylinder; 17, liquid adding pipe; 18, second treatment box body; 19, liquid discharging pipe; 20, second connecting pipe; 21, first exhaust pipe; 22, front door; 23, corrugated hose; 24, first connecting flange; 25, second connecting flange; 26, connecting bolts; 27, connecting nuts; 28, filter cartridge; 29, card slot. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Embodiment 1: Please refer to Figures 1-4 , a gas chromatograph tail gas purification device, including a device box body 3, an air inlet pipe 8 is arranged at the top end of the device box body 3, and an adjustment structure capable of corresponding to different tail gases to replace the purification method is arranged inside the device box body 3;

[0026] The adjustment structure includes a first treatment box 4, an activated carbon filter element 5, a first connecting pipe 6, a first valve 7, a first branch pipe 9, an induced draft fan 10, a second branch pipe 11, a second valve 12, a second exhaust pipe 14, a second treatment box body 18 and a second connecting pipe 20. The first treatment box 4 is fixed on the left side inside the device box body 3, and the activated carbon filter element 5 is fixed inside the first treatment box 4. The first connecting pipe 6 is fixed at the top end of the first treatment box 4. A three-way pipe 13 is arranged at the top end of the device box body 3, and the left side at the bottom end of the three-way pipe 13 is fixed with a first branch pipe 9. The bottom end of the first branch pipe 9 is installed and fixed with a first valve 7. The right side at the bottom end of the three-way pipe 13 is fixed with a second branch pipe 11, and the bottom end of the second branch pipe 11 is installed and fixed with a second valve 12. The second treatment box body 18 is fixed on the right side inside the device box body 3, and an alkali solution is arranged inside the second treatment box body 18. The bottom end of the second valve 12 is installed and fixed with a second connecting pipe 20. The bottom end of the first treatment box 4 is fixed with a first exhaust pipe 21. The right side at the top end of the second treatment box body 18 is fixed with a second exhaust pipe 14;

[0027] The top end of the first connecting pipe 6 passes through the inside of the top end of the device box body 3 and is installed and fixed with the bottom end of the first valve 7. The bottom end of the second connecting pipe 20 respectively penetrates through the inside of the top ends of the device box body 3 and the second treatment box body 18. The three-way pipe 13 is communicated with the inside of the first treatment box 4 through the first branch pipe 9 and the first connecting pipe 6. The three-way pipe 13 is communicated with the inside of the second treatment box body 18 through the second branch pipe 11 and the second connecting pipe 20. The second exhaust pipe 14 is communicated with the inside of the second treatment box body 18. The top end of the second exhaust pipe 14 penetrates through the inside of the top end of the device box body 3. The first exhaust pipe 21 is communicated with the inside of the first treatment box 4. The bottom end of the first exhaust pipe 21 penetrates through the inside of the bottom end of the device box body 3;

[0028] Specifically, as Figure 1 and Figure 2As shown, after connecting the device to the exhaust pipe of the gas chromatograph using the intake pipe 8, when using the device, according to the composition of the exhaust gas discharged, when volatile organic compounds are contained in the exhaust gas discharged, the first valve 7 can be closed and the second valve 12 can be opened simultaneously. Then, the induced draft fan 10 is controlled to start, and the exhaust gas is drawn into the tee 13 through the intake pipe 8. Then, the exhaust gas is introduced into the second connecting pipe 20 through the second branch pipe 11 by the tee 13, and then into the lye inside the second treatment box 18 through the second connecting pipe 20. By using the lye, the harmful substances in the exhaust gas containing volatile organic compounds are absorbed and purified. The purified exhaust gas can be led out from the liquid level inside the second treatment box 18 and discharged through the second exhaust pipe 14. If the exhaust gas discharged is low-concentration organic waste gas, the second valve 12 can be closed and the first valve 7 can be opened simultaneously, and the exhaust gas is introduced into the inside of the first treatment box 4 through the tee 13, the first branch pipe 9, and the first connecting pipe 6. By using the high specific surface area and strong adsorption of the activated carbon filter element 5 inside the first treatment box 4, the harmful substances in the exhaust gas can be adsorbed and purified. The integrated purification device can flexibly select the purification treatment method according to the composition of the exhaust gas discharged, improving the purification treatment efficiency of the gas chromatograph exhaust gas.

[0029] Embodiment 2: A liquid adding pipe 17 is provided at the top right side of the device box body 3, and a fixing cylinder 16 is fixed at the top of the liquid adding pipe 17. A rotary cover 15 is provided at the top of the fixing cylinder 16. The left side of the liquid adding pipe 17 penetrates through the inside of the device box body 3 and the right side of the second treatment box 18 respectively. A clamping groove 29 is formed inside the top of the fixing cylinder 16. A filter cylinder 28 is provided inside the fixing cylinder 16. The liquid adding pipe 17 is communicated with the inside of the second treatment box 18. External threads are provided at the top outside the fixing cylinder 16. The rotary cover 15 is rotatably connected to the top outside the fixing cylinder 16. The fixing cylinder 16 is communicated with the inside of the liquid adding pipe 17.

[0030] Specifically, as Figure 1 and Figure 4 shown, when replacing the lye used for internal treatment and purification in the second treatment box 18, after the lye inside the second treatment box 18 is discharged through the drain pipe 19, the rotary cover 15 can be unscrewed, and then the configured lye is introduced through the filter cylinder 28. The set filter cylinder 28 can assist in filtering and removing some particulate impurities in the configured lye, improving the purity of the lye.

[0031] Embodiment 3: A corrugated hose 23 is provided on the left side of the intake pipe 8. A second connection flange 25 is fixed to the left side outside the intake pipe 8. A first connection flange 24 is fixed to the right side and the bottom end of the corrugated hose 23 respectively. A connection bolt 26 is provided on the right side of the second connection flange 25, and a connection nut 27 is provided on the left side of the first connection flange 24 on the right side. A drain pipe 19 is fixed to the bottom end of the second treatment box 18, and the bottom end of the drain pipe 19 penetrates through the inside of the bottom end of the device box 3 and is fixed with an on-off valve. The left side of the connection bolt 26 penetrates through the inside of the second connection flange 25 and the first connection flange 24 respectively. The connection nut 27 is rotatably connected to the outside of the connection bolt 26. Four groups of the connection bolts 26 and the connection nuts 27 are arranged at equal intervals in a ring on the second connection flange 25 and the first connection flange 24 respectively. The corrugated hose 23 is communicated with the inside of the intake pipe 8;

[0032] Specifically, as Figure 1 and Figure 3 shown, after the corrugated hose 23 is connected and fixed to the exhaust pipe of the gas chromatograph by using the first connection flange 24 with the connection bolt 26 and the connection nut 27, the exhaust gas can be connected and introduced into the intake pipe 8 through the provided corrugated hose 23 to enter the device for treatment. At the same time, the provided corrugated hose 23 enables the device and the gas chromatograph to be in a flexible connection, and the positions between the purification device and the gas chromatograph can be adjusted flexibly.

[0033] A blower 10 is fixed to the top end of the tee pipe 13. The bottom end of the intake pipe 8 is fixedly connected to the top end of the blower 10. A front door 22 is fixedly installed at the front end of the device box 3. Legs 2 are respectively fixed at the four corners of the bottom end of the device box 3, and a moving wheel 1 is fixed to the bottom end of the legs 2.

[0034] Working principle: When the purification device of the present utility model is connected and used with a gas chromatograph, after the corrugated hose 23 is connected and fixed to the exhaust pipe of the gas chromatograph by using the first connection flange 24 with connection bolts 26 and connection nuts 27, the exhaust gas can be connected and introduced into the intake pipe 8 through the corrugated hose 23 to enter the device for treatment. At the same time, the corrugated hose 23 provided enables the device and the gas chromatograph to be in a flexible connection, and the positions between the purification device and the gas chromatograph can be adjusted. After connecting the device to the exhaust pipe of the gas chromatograph by using the intake pipe 8, when using the device, according to the components of the exhaust gas discharged, when the exhaust gas contains volatile organic compounds, the first valve 7 can be closed and the second valve 12 can be opened simultaneously. Then, the induced draft fan 10 is controlled to start, and the exhaust gas is drawn into the tee 13 through the intake pipe 8. Then, the exhaust gas is introduced into the second connection pipe 20 through the second branch pipe 11 by the tee 13, and then into the lye in the second treatment box 18 through the second connection pipe 20. The harmful substances in the exhaust gas containing volatile organic compounds are absorbed and purified by using the lye. The purified exhaust gas can be led out from the liquid level inside the second treatment box 18 and discharged through the second exhaust pipe 14. If the exhaust gas discharged is low-concentration organic waste gas, the second valve 12 can be closed and the first valve 7 can be opened simultaneously, and the exhaust gas is introduced into the inside of the first treatment box 4 through the tee 13, the first branch pipe 9 and the first connection pipe 6. By using the high specific surface area and strong adsorption of the activated carbon filter element 5 inside the first treatment box 4, the harmful substances in the exhaust gas can be adsorbed and purified. It is an integrated purification device. During the use of the device, when replacing the lye used for treatment and purification inside the second treatment box 18, after the lye inside the second treatment box 18 is drained through the drain pipe 19, the screw cap 15 can be unscrewed, and then the configured lye is introduced through the filter cartridge 28. The filter cartridge 28 provided can assist in filtering and removing some particulate impurities in the configured lye, improving the purity of the lye.

[0035] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A gas chromatography tail gas purification device, comprising a device box body (3), characterized in that: An air inlet pipe (8) is provided at the top of the device box body (3), and an adjustment structure capable of corresponding to different purification methods for replacing tail gas is arranged inside the device box body (3). The adjustment structure includes a first treatment box (4), an activated carbon filter element (5), a first connecting pipe (6), a first valve (7), a first branch pipe (9), an induced draft fan (10), a second branch pipe (11), a second valve (12), a second exhaust pipe (14), a second treatment box body (18) and a second connecting pipe (20). The first treatment box (4) is fixed to the left side inside the device box body (3), and the activated carbon filter element (5) is fixed inside the first treatment box (4). The first connecting pipe (6) is fixed to the top of the first treatment box (4). A three-way pipe (13) is provided at the top of the device box body (3), and the left side at the bottom of the three-way pipe (13) is fixed with a first branch pipe (9). The first valve (7) is installed and fixed at the bottom of the first branch pipe (9). The right side at the bottom of the three-way pipe (13) is fixed with a second branch pipe (11), and the second valve (12) is installed and fixed at the bottom of the second branch pipe (11). The second treatment box body (18) is fixed to the right side inside the device box body (3), and an alkali solution is arranged inside the second treatment box body (18). The second connecting pipe (20) is installed and fixed at the bottom of the second valve (12). The first exhaust pipe (21) is fixed to the bottom of the first treatment box (4). The right side at the top of the second treatment box body (18) is fixed with the second exhaust pipe (14).

2. The gas chromatography tail gas purification device according to claim 1, wherein: The top of the first connecting pipe (6) penetrates through the inside of the top of the device box body (3) and is installed and fixed with the bottom end of the first valve (7). The bottom end of the second connecting pipe (20) penetrates through the inside of the tops of the device box body (3) and the second treatment box body (18) respectively. The three-way pipe (13) is communicated with the inside of the first treatment box (4) through the first branch pipe (9) and the first connecting pipe (6). The three-way pipe (13) is communicated with the inside of the second treatment box body (18) through the second branch pipe (11) and the second connecting pipe (20).

3. The gas chromatograph tail gas purification device according to claim 1, characterized in that: The second exhaust pipe (14) is communicated with the inside of the second treatment box body (18). The top of the second exhaust pipe (14) penetrates through the inside of the top of the device box body (3). The first exhaust pipe (21) is communicated with the inside of the first treatment box (4). The bottom of the first exhaust pipe (21) penetrates through the inside of the bottom of the device box body (3).

4. A gas chromatography tail gas purification device according to claim 1, characterized in that: A liquid adding pipe (17) is provided at the top of the right side of the device box body (3), and a fixing cylinder (16) is fixed to the top of the liquid adding pipe (17). A rotary cover (15) is provided at the top of the fixing cylinder (16). The left side of the liquid adding pipe (17) penetrates through the inside of the right sides of the device box body (3) and the second treatment box body (18) respectively. A clamping groove (29) is formed inside the top of the fixing cylinder (16). A filter cylinder (28) is arranged inside the fixing cylinder (16). The liquid adding pipe (17) is communicated with the inside of the second treatment box body (18).

5. The gas chromatography tail gas purification device according to claim 4, characterized in that: The top end of the outer part of the fixed cylinder (16) is provided with an external thread, the screw cap (15) is rotatably connected to the top end of the outer part of the fixed cylinder (16), and the fixed cylinder (16) is internally communicated with the liquid adding pipe (17).

6. The gas chromatography tail gas purification device according to claim 1, characterized in that: A corrugated hose (23) is arranged on the left side of the air inlet pipe (8), a second connecting flange (25) is fixed on the left side of the outer part of the air inlet pipe (8), a first connecting flange (24) is fixed on the right side and the bottom end of the corrugated hose (23) respectively, a connecting bolt (26) is arranged on the right side of the second connecting flange (25), a connecting nut (27) is arranged on the left side of the right first connecting flange (24), a drain pipe (19) is fixed at the bottom end of the second treatment box body (18), and the bottom end of the drain pipe (19) penetrates through the inside of the bottom end of the device box body (3) and is fixed with a switching valve.

7. The gas chromatograph tail gas purification device according to claim 6, characterized in that: The left side of the connecting bolt (26) respectively penetrates through the inside of the second connecting flange (25) and the first connecting flange (24), the connecting nut (27) is rotatably connected to the outer part of the connecting bolt (26), four groups of the connecting bolts (26) and the connecting nuts (27) are annularly and equidistantly arranged on the second connecting flange (25) and the first connecting flange (24) respectively, and the corrugated hose (23) is internally communicated with the air inlet pipe (8).

8. A gas chromatography tail gas purification device according to claim 1, characterized in that: An induced draft fan (10) is fixed at the top end of the three-way pipe (13), the bottom end of the air inlet pipe (8) is fixedly connected to the top end of the induced draft fan (10), a front door (22) is fixedly installed at the front end of the device box body (3), legs (2) are respectively fixed at the four corners of the bottom end of the device box body (3), and a moving wheel (1) is fixed at the bottom end of the leg (2).

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