Normal hexane tail gas purification device

Abstract

The utility model provides an n-hexane tail gas purification device, which belongs to the technical field of tail gas purification and comprises an absorption tower type main body, an exhaust pipe and a gas inlet pipe are respectively communicated with the upper end and the lower end of the absorption tower type main body, and the inside of the absorption tower type main body is divided into a first cavity and a second cavity through a heat insulation plate. A plurality of partition plates paved with catalysts are arranged in the first cavity and the second cavity, a heating channel and a heating pipeline which are used for communicating the first cavity with the second cavity are arranged in the heat preservation plate in a penetrating manner, and the heating pipeline surrounds the channel and is arranged in the heat preservation plate. According to the tail gas purification device, the partition plates and the heating pipeline are arranged, tail gas is heated through the heating pipeline, and the multiple partition plates are arranged, so that n-hexane in the tail gas can be fully subjected to a catalytic reaction, full reaction of the tail gas is conveniently achieved, and the tail gas purification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas purification, in particular to a n-hexane tail gas purification device. Background Art

[0002] n-Hexane is a colorless, volatile liquid commonly used as a solvent or chemical reagent in the chemical and petroleum industries. With the chemical formula C6H14, n-hexane possesses unique chemical and physical properties. The n-hexane tail gas treatment process utilizes solvent absorption, absorbing the n-hexane from the tail gas through a paraffin oil solvent absorption tower. The absorption tower utilizes the differences in solubility of different components in a gas mixture in the liquid phase (solvent phase) to separate specific substances. Since n-hexane has a much greater solubility in paraffin oil than in air, it can be separated from air through paraffin oil solvent absorption.

[0003] In order to address the above-mentioned problems, a Chinese patent with the existing announcement number CN220861073U proposes an exhaust gas purification device, which uses a booster pump to transport the chemical liquid to the exhaust gas spray tower, and at the same time uses a fan to transport the exhaust gas to the exhaust gas spray tower for water washing and reaction with the chemical liquid. The exhaust gas after the reaction enters the filter assembly along the outlet pipe, and is filtered and purified by a fine filter cylinder, an electrostatic dust collection filter cylinder and a deodorizing catalytic filter cylinder in turn before being discharged to the outside.

[0004] However, although the above-mentioned exhaust gas purification device can transport the chemical liquid to the exhaust gas spray tower through a booster pump to wash the exhaust gas with water and react with the chemical liquid, and then filter the exhaust gas through a filter assembly, when the exhaust gas purification device transports the chemical liquid to the exhaust gas spray tower through a booster pump, due to the fixed temperature in the exhaust gas spray tower, it takes a long time for the chemical liquid to react with the exhaust gas, resulting in a problem of reduced purification efficiency of the exhaust gas. Therefore, the utility model provides a n-hexane exhaust gas purification device to meet the needs. Utility Model Content

[0005] The purpose of the utility model is to solve the problems existing in the above-mentioned background technology and to propose a n-hexane tail gas purification device.

[0006] The technical problem to be solved by the utility model is to provide a n-hexane tail gas purification device to solve the problem that when the existing tail gas purification device transports the chemical liquid to the exhaust gas spray tower through a booster pump, the temperature in the exhaust gas spray tower is fixed, so that it takes a long time for the chemical liquid to react with the tail gas, resulting in reduced purification efficiency of the tail gas.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] The n-hexane tail gas purification device includes:

[0009] An absorption tower body, wherein the upper and lower ends thereof are respectively connected to an exhaust pipe and an air inlet pipe, the interior of the absorption tower body is divided into a first cavity and a second cavity by an insulation plate, the first cavity and the second cavity are both provided with a plurality of partitions paved with catalysts, and a heating channel is provided through the insulation plate to connect the first cavity and the second cavity;

[0010] A heating pipe surrounds the channel and is arranged in the insulation board.

[0011] Preferably, the partitions in the first cavity and the second cavity are fixedly connected in an up-down cross relationship in the absorption tower body, and a plurality of the partitions divide the interior of the first cavity and the second cavity into N-shaped channels respectively.

[0012] Preferably, the heating channel is arranged to extend along the length direction of the insulation board.

[0013] Preferably, a plurality of guide plates are fixedly connected in the heating channel, and the plurality of guide plates form the heating channel into an S-shaped channel.

[0014] Preferably, it further comprises a filtering mechanism which is detachably arranged in the exhaust pipe, and a through opening for inserting the filtering mechanism is provided through the exhaust pipe.

[0015] Preferably, sliders are relatively fixedly connected to both sides of the filter mechanism, and the exhaust pipe is provided with a sliding groove for the sliders to slide.

[0016] Preferably, the filtering mechanism includes a filter net and a sponge layer, an activated carbon layer and a filter membrane sequentially arranged inside the filter net.

[0017] Preferably, a clamping plate is fixedly connected to the top of the filter mechanism, and a clamping groove that can be clamped with the clamping plate is provided on the exhaust pipe, and the clamping groove is communicated with the through port.

[0018] Preferably, a sealing gasket is fixedly connected to the clamping groove, and a handle is fixedly connected to the clamping plate.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] In the above scheme, by setting up partitions and heating pipes, the exhaust gas is heated through the heating pipes, and the setting of multiple partitions enables the catalyst to fully catalyze the n-hexane in the exhaust gas, thereby facilitating the full reaction of the exhaust gas and improving the purification efficiency of the exhaust gas.

[0021] In the above solution, by providing guide plates, the provision of multiple guide plates can increase the time for the exhaust gas to be heated by the heating pipe, so that the exhaust gas can be fully heated, thereby ensuring the purification effect of the exhaust gas.

[0022] In the above solution, by providing a through hole, a slider, and a filter mechanism, the filter mechanism can be easily disassembled and assembled through the provision of the through hole and the slider. At the same time, the filter mechanism can further enhance the purification effect of the exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable one skilled in the relevant art to make and use the present disclosure.

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a partial structural diagram of the sealing gasket and the clamping groove of the utility model;

[0026] Figure 3 This is a structural diagram of the slider and the opening of the utility model;

[0027] Figure 4 It is a partial structural diagram of the filtering mechanism of the utility model.

[0028] [reference numerals]

[0029] 1. Absorption tower body; 2. Air inlet pipe; 3. Exhaust pipe; 4. Partition; 5. Insulation board; 6. Channel; 7. Heating pipe; 8. Guide plate; 9. Filter mechanism; 91. Sponge layer; 92. Activated carbon layer; 93. Polyimide gas separation membrane; 94. Filter screen; 10. Snap-on plate; 11. Handle; 12. Slider; 13. Through port; 14. Slide; 15. Sealing gasket; 16. Snap-on groove; 17. First cavity; 18. Second cavity. DETAILED DESCRIPTION

[0030] like Figures 1 to 4 As shown, an embodiment of the present invention provides a n-hexane tail gas purification device, including an absorption tower body 1, the upper and lower ends of which are respectively connected to an exhaust pipe 3 and an intake pipe 2, the interior of the absorption tower body 1 is divided into a first cavity 17 and a second cavity 18 by an insulation plate 5, and the first cavity 17 and the second cavity 18 are both provided with a plurality of partitions 4 with catalysts, and the insulation plate 5 is penetrated by a heating channel 6 connecting the first cavity 17 and the second cavity 18, and a heating pipe 7, whose surrounding channel is arranged in the insulation plate 5.

[0031] Specifically, the exhaust gas is heated by the heating pipe 7, and the arrangement of multiple partitions 4 enables the catalyst to fully catalyze the reaction of n-hexane in the exhaust gas, thereby facilitating a full reaction of the exhaust gas and improving the purification efficiency of the exhaust gas. This solves the problem that when the existing exhaust gas purification device transports the liquid medicine to the exhaust gas spray tower through a booster pump, the temperature in the exhaust gas spray tower is fixed, so that it takes a long time for the liquid medicine to react with the exhaust gas, resulting in a reduction in the purification efficiency of the exhaust gas.

[0032] It should be noted that the catalyst on the partition 4 can be V2O5, TiO2, etc., and the technology for installing it on the partition 4 is existing technology, which can effectively promote the complete oxidation of n-hexane and convert it into harmless water and carbon dioxide. At the same time, the number of partitions 4 in the first cavity 17 and the second cavity 18 is not limited. Secondly, the installation of the heating pipe 7 and the equipment connection are existing technology.

[0033] like Figure 1 As shown, in this embodiment, the partitions 4 in the first cavity 17 and the second cavity 18 are fixedly connected in an upper and lower cross relationship in the absorption tower body 1, and multiple partitions 4 respectively divide the interior of the first cavity 17 and the second cavity 18 into N-type channels. Specifically, since the number of partitions 4 is not limited, there can be multiple N-type channels in the first cavity 17 and the second cavity 18 and they are interconnected.

[0034] like Figure 1 As shown, in this embodiment, the heating channel 6 is extended along the length direction of the insulation plate 5, and a plurality of guide plates 8 are fixedly connected in the heating channel 6. The plurality of guide plates 8 form the heating channel 6 into an S-shaped channel. Specifically, the provision of the plurality of guide plates 8 can increase the time for the exhaust gas to be heated by the heating pipe 7, so that the exhaust gas can be fully heated, thereby ensuring the purification effect of the exhaust gas.

[0035] like Figures 1 to 4 As shown, in this embodiment, a filter mechanism 9 is further included, which is detachably arranged in the exhaust pipe 3. A through hole 13 is provided in the exhaust pipe 3 for inserting the filter mechanism 9. Sliders 12 are relatively fixedly connected on both sides of the filter mechanism 9. The exhaust pipe 3 is provided with a slide groove 14 for the slider 12 to slide. The filter mechanism 9 includes a filter mesh 94 and a sponge layer 91, an activated carbon layer 92 and a filter membrane arranged in sequence inside the filter mesh 94. Specifically, the arrangement of the through hole 13 and the slider 12 facilitates the disassembly and assembly of the filter mechanism 9. At the same time, the filter mechanism 9 can further enhance the purification effect of the exhaust gas. It should be noted that the filter membrane can be a polyethersulfone filter membrane, a cellulose acetate filter membrane, etc. in the prior art.

[0036] like Figure 2 and Figure 3As shown, in this embodiment, a snap-in plate 10 is fixedly connected to the top of the filter mechanism 9, a snap-in groove 16 which can be snap-connected with the snap-in plate 10 is provided on the exhaust pipe 3, the snap-in groove 16 is communicated with the through port 13, a sealing gasket 15 is fixedly connected to the snap-in groove 16, and a handle 11 is fixedly connected to the snap-in plate 10. Specifically, the arrangement of the snap-in plate 10, the sealing gasket 15 and the snap-in groove 16 facilitates improving the sealing of the connection between the filter mechanism 9 and the exhaust pipe 3, thereby ensuring the purification quality of the exhaust gas.

[0037] Working principle:

[0038] The tail gas enters the first cavity 17 in the absorption tower body 1 along the air inlet pipe 2, and then flows along the N-type channel composed of multiple partitions 4. Since the density of n-hexane is lower than that of air, the n-hexane therein will move upward. At the same time, the catalyst on the partition 4 of the absorption tower body 1 undergoes a catalytic reaction. Part of the fully reacted n-hexane will enter the heating channel 6 of the heating plate. The heating pipe 7 is started by an external device, so that the heating pipe 7 generates heat to heat the tail gas. The setting of the multiple guide plates 8 can increase the time the tail gas stays in the heating channel 6, so that the tail gas temperature is fully increased, and the tail gas is heated. The heated exhaust gas is discharged into the second cavity 18 and is catalyzed by the catalyst on the multiple partitions 4, so that the heated exhaust gas can be further reacted, thereby improving its reaction efficiency. The reacted exhaust gas enters the exhaust pipe 3 and is filtered by the filtering mechanism 9. The overall operation is simple, which facilitates the full reaction of the exhaust gas and improves the purification efficiency of the exhaust gas. It solves the problem that when the existing exhaust gas purification device transports the liquid medicine to the exhaust gas spray tower through the booster pump, the temperature in the exhaust gas spray tower is fixed, so that it takes a long time for the liquid medicine to react with the exhaust gas, resulting in reduced purification efficiency of the exhaust gas.

Claims

1. A n-hexane tail gas purification device, characterized in that: include: An absorption tower body (1) is provided with an exhaust pipe (3) and an air inlet pipe (2) at its upper and lower ends, respectively. The interior of the absorption tower body (1) is divided into a first cavity (17) and a second cavity (18) by a heat preservation plate (5). The first cavity (17) and the second cavity (18) are both provided with a plurality of partition plates (4) provided with catalysts. A heating channel (6) is provided through the heat preservation plate (5) to connect the first cavity (17) and the second cavity (18). A heating pipe (7) is arranged around the channel and inside the insulation board (5).

2. The n-hexane tail gas purification device according to claim 1, characterized in that: The partitions (4) in the first cavity (17) and the second cavity (18) are fixedly connected in an up-down cross relationship within the absorption tower body (1), and a plurality of the partitions (4) respectively separate the interiors of the first cavity (17) and the second cavity (18) into N-shaped channels.

3. The n-hexane tail gas purification device according to claim 1, characterized in that: The heating channel (6) is arranged to extend along the length direction of the thermal insulation board (5).

4. The n-hexane tail gas purification device according to claim 3, characterized in that: A plurality of guide plates (8) are fixedly connected in the heating channel (6), and the plurality of guide plates (8) form the heating channel (6) into an S-shaped channel.

5. The n-hexane tail gas purification device according to claim 1, characterized in that: It also includes a filter mechanism (9) which is detachably arranged in the exhaust pipe (3). The exhaust pipe (3) is provided with a through opening (13) for inserting the filter mechanism (9).

6. The n-hexane tail gas purification device according to claim 5, characterized in that: Slide blocks (12) are relatively fixedly connected to both sides of the filter mechanism (9), and a sliding groove (14) for the slide blocks (12) to slide is provided on the exhaust pipe (3).

7. The n-hexane tail gas purification device according to claim 5, characterized in that: The filtering mechanism (9) comprises a filter screen (94) and a sponge layer (91), an activated carbon layer (92) and a filter membrane sequentially arranged inside the filter screen (94).

8. The n-hexane tail gas purification device according to claim 5, characterized in that: A clamping plate (10) is fixedly connected to the top of the filter mechanism (9), and a clamping groove (16) that can be clamped with the clamping plate (10) is provided on the exhaust pipe (3), and the clamping groove (16) is communicated with the through port (13).

9. The n-hexane tail gas purification device according to claim 8, characterized in that: A sealing gasket (15) is fixedly connected to the clamping groove (16), and a handle (11) is fixedly connected to the clamping plate (10).

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