Hydrogen sulfide and carbon disulfide waste gas treatment device for chemical fiber industry

Abstract

The utility model discloses a hydrogen sulfide and carbon disulfide waste gas treatment device for chemical fiber industry, which comprises a spray tower and a condensing tower, three gas distribution catalyst layers are fixedly mounted in the spray tower, sprayers are mounted above the gas distribution catalyst layers in the spray tower, a communicating pipeline is connected between the top end of the spray tower and the condensing tower, and the communicating pipeline is communicated with the condensing tower. When the device is used, the spraying tower is internally provided with a gas distribution catalyst layer, so that the speed of waste gas and alkali liquor is reduced, the contact time of the waste gas and the alkali liquor is prolonged, the waste gas and alkali liquor can be recycled, the waste gas and alkali liquor can be recycled, and the service life of the waste gas and alkali liquor is prolonged. Meanwhile, the reaction speed of the waste gas and alkali liquor is increased through a catalyst, the purification effect is improved, the device is further provided with a condensing tower, a guide plate and a condenser are arranged in the condensing tower, the contact time of the waste gas and the condenser is prolonged, and the condensation purification effect of carbon disulfide in the waste gas is improved.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, specifically a device for treating hydrogen sulfide and carbon disulfide waste gas in the chemical fiber industry. Background Technology

[0002] The waste gas generated by the chemical fiber industry often contains components such as hydrogen sulfide and carbon disulfide. As a wet pretreatment device, the spray tower can effectively remove particulate matter from the waste gas. By using a packed spray tower as a pretreatment, circulating water is used to absorb and treat the waste gas, removing pollutants such as hydrogen sulfide.

[0003] In existing spray towers, the waste gas flows from bottom to top during waste gas treatment. A spraying device is installed at the top of the tower to spray the liquid, thereby purifying the waste gas through contact with the rising waste gas. However, this method results in a short contact time between the waste gas and the alkaline solution, insufficient contact between the waste gas and the liquid, and poor purification effect. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a device for treating hydrogen sulfide and carbon disulfide waste gas in the chemical fiber industry, which solves the technical problems mentioned in the background art, such as insufficient contact between waste gas and liquid, resulting in poor purification effect.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a hydrogen sulfide and carbon disulfide waste gas treatment device for the chemical fiber industry, comprising a spray tower and a condenser tower. A recovery tank is connected to one side of the bottom of the spray tower. Three gas distribution catalytic layers are fixedly installed inside the spray tower. An air inlet is connected to one side wall of the spray tower below the gas distribution catalytic layers. A sprayer is installed inside the spray tower above the gas distribution catalytic layers. A demisting layer is installed at the top inner part of the spray tower. A connecting pipe connects the top of the spray tower to the condenser tower. Several guide plates are fixedly installed inside the condenser tower. A condenser is fixedly installed on the guide plates. A waste liquid tank is provided below the condenser tower. A cleaner is fixedly installed at the top inner part of the condenser tower. An air outlet is provided at the top of the condenser tower.

[0006] Preferably, the gas distribution catalyst layer includes a pair of partitions and a packing layer. The packing layer is disposed between the pair of partitions and is a ceramic sphere structure with a catalyst attached to its surface. The partitions are provided with through holes. The through holes on the three gas distribution catalyst layers decrease in size from top to bottom. The diameter of the catalytic ceramic spheres in the packing layers of the three gas distribution catalyst layers decreases in size. The diameter of the catalytic ceramic spheres in each gas distribution catalyst layer is larger than the diameter of the through hole.

[0007] Preferably, the plurality of the guide vanes are installed in a Z-shape, each of the guide vanes is installed at an angle, and each of the guide vanes is provided with a plurality of vent holes.

[0008] Preferably, a manhole is installed on the side wall of the spray tower at the location of the gas distribution catalytic layer.

[0009] Preferably, a pressure relief valve is installed inside the air outlet. Beneficial effects

[0010] This utility model provides a device for treating hydrogen sulfide and carbon disulfide waste gas in the chemical fiber industry, which solves the technical problem of insufficient contact between waste gas and liquid and poor purification effect. It has the following beneficial effects: When the device is in use, the gas distribution catalytic layer installed in the spray tower reduces the velocity of waste gas and alkaline solution and increases the contact time between waste gas and alkaline solution. At the same time, the catalyst increases the reaction rate between waste gas and alkaline solution, thereby improving the purification effect. The device is also equipped with a condensation tower, which has a built-in guide plate and condenser, increasing the contact time between waste gas and condenser and improving the condensation and purification effect of carbon disulfide in waste gas. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of a chemical fiber industry hydrogen sulfide and carbon disulfide waste gas treatment device according to the present invention.

[0012] Figure 2 This is a structural diagram of the spray tower of the chemical fiber industry hydrogen sulfide and carbon disulfide waste gas treatment device described in this utility model.

[0013] Figure 3 This is a structural diagram of the condenser tower of the chemical fiber industry hydrogen sulfide and carbon disulfide waste gas treatment device described in this utility model.

[0014] In the diagram: 1. Spray tower; 2. Recovery tank; 3. Air inlet; 4. Connecting pipe; 5. Condensation tower; 6. Waste liquid tank; 7. Air outlet; 8. Gas distribution catalytic layer; 9. Sprayer; 10. Demisting layer; 11. Condenser; 12. Baffle plate; 13. Cleaner; 14. Manhole. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-3This utility model provides a technical solution for a hydrogen sulfide and carbon disulfide waste gas treatment device for the chemical fiber industry: A hydrogen sulfide and carbon disulfide waste gas treatment device for the chemical fiber industry includes a spray tower 1 and a condenser tower 5. A recovery tank 2 is connected to one side of the bottom of the spray tower 1. Three gas distribution catalyst layers 8 are fixedly installed inside the spray tower 1. An air inlet 3 is connected to one side wall of the spray tower 1 below the gas distribution catalyst layers 8. A sprayer 9 is installed inside the spray tower 1 above the gas distribution catalyst layers 8. A demisting layer 10 is installed at the top of the spray tower 1. A connecting pipe 4 connects the top of the spray tower 1 and the condenser tower 5. Several guide plates 12 are fixedly installed inside the condenser tower 5. A condenser 11 is fixedly installed on the guide plates 12. A waste liquid tank 6 is set below the condenser tower 5. A cleaner 13 is fixedly installed at the top of the condenser tower 5. An air outlet 7 is set at the top of the condenser tower 5.

[0017] Furthermore, the gas distribution catalytic layer 8 includes a pair of partitions and a packing layer. The packing layer is disposed between the pair of partitions and is a ceramic sphere structure with a catalyst attached to its surface. The partitions have through holes. The through holes on the three gas distribution catalytic layers 8 decrease in size from top to bottom. The diameter of the catalytic ceramic spheres in the packing layers of the three gas distribution catalytic layers 8 decreases in size. The diameter of the catalytic ceramic spheres in each gas distribution catalytic layer 8 is larger than the diameter of the through holes, which increases the contact time between the waste gas and the alkaline solution, accelerates the reaction rate between the waste gas and the alkaline solution, and improves the purification effect.

[0018] Furthermore, several guide vanes 12 are installed in a Z-shape, each guide vane 12 is installed at an angle, and each guide vane 12 is provided with several vent holes to increase the contact time between the exhaust gas and the condenser and improve the condensation and liquefaction separation effect of carbon disulfide.

[0019] Furthermore, a manhole 14 is installed on the side wall of the spray tower 1 at the position of the gas distribution catalytic layer 8 to facilitate maintenance of the gas distribution catalytic layer.

[0020] Furthermore, a pressure relief valve is installed inside the air outlet 7 to appropriately increase the air pressure inside the condenser tower and improve the purification effect.

[0021] Example: When this device is in use, the exhaust gas enters the spray tower 1 through the air inlet 3 and is blocked by the gas distribution catalytic layer 8. The gas rises evenly from the through holes on the gas distribution catalytic layer 8 and the gaps between the catalytic ceramic spheres.

[0022] The sprayer 9 is connected to the alkaline solution, which is sprayed through a high-pressure atomizing nozzle. The alkaline solution falls under the action of gravity and comes into contact with the rising exhaust gas, where it reacts with the hydrogen sulfide in the exhaust gas to neutralize it.

[0023] The alkaline solution also falls through the through holes and gaps in the gas distribution catalytic layer 8. The three gas distribution catalytic layers 8 can slow down the flow rate of the alkaline solution and the exhaust gas, increase the contact time between the alkaline solution and the exhaust gas, and at the same time, the alkaline solution and the exhaust gas can also accelerate the neutralization reaction rate of the alkaline solution and the exhaust gas through catalysis, thereby improving the effect of purifying hydrogen sulfide in the exhaust gas.

[0024] After the hydrogen sulfide is removed, the exhaust gas passes through the demister layer 10 to remove moisture, and then enters the condenser tower 5 through the connecting pipe 4. Part of the exhaust gas rises through the vent holes on the guide plate 12, while most of the exhaust gas rises in an S-shape through the channel formed by the Z-shaped guide plates 12.

[0025] The guide plate 12 can increase the movement path of the exhaust gas, increase the contact time between the exhaust gas and the condenser 11, and improve the condensation and separation effect of carbon disulfide in the exhaust gas.

[0026] The liquefied carbon disulfide flows into the waste liquid pool 6 through the guide plate 12 for further treatment, and the purified waste gas is further treated through the outlet 7.

[0027] When it is necessary to clean the condenser 11 and the guide plate 12 inside the condensing tower 5, high-pressure cleaning fluid is sprayed into the condenser 11 and the guide plate 12 through the cleaner 13 for cleaning.

[0028] It should be noted that in this document, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.

Claims

1. A device for treating waste gas of hydrogen sulfide and carbon disulfide in chemical fiber industry, comprising a spray tower (1) and a condensation tower (5), characterized in that, The bottom end side of the spray tower (1) is communicated with a recovery tank (2), three air distribution catalyst layers (8) are fixedly installed in the spray tower (1), an air inlet (3) is connected to the side wall of the spray tower (1) below the air distribution catalyst layer (8), a sprayer (9) is installed above the air distribution catalyst layer (8) in the spray tower (1), a demisting layer (10) is installed at the inner top of the spray tower (1), a communication pipeline (4) is connected between the top end of the spray tower (1) and the condensation tower (5), a plurality of guide plates (12) are fixedly installed in the condensation tower (5), a condenser (11) is fixedly installed on the guide plate (12), a waste liquid tank (6) is arranged below the condensation tower (5), a cleaner (13) is fixedly installed at the inner top of the condensation tower (5), and an air outlet (7) is arranged at the top end of the condensation tower (5).

2. The hydrogen sulfide and carbon disulfide waste gas treatment device for chemical fiber industry according to claim 1, characterized in that, The air distribution catalyst layer (8) comprises a pair of partitions and a filler layer, the filler layer is arranged between the pair of partitions, the filler layer is a ceramic sphere structure with a catalyst attached to the surface, the partition is provided with a through hole, the through holes in the three air distribution catalyst layers (8) gradually decrease from top to bottom, the diameters of the catalytic ceramic spheres in the filler layers of the three air distribution catalyst layers (8) gradually decrease, and the diameter of the catalytic ceramic sphere in each air distribution catalyst layer (8) is greater than the diameter of the through hole.

3. The device for treating hydrogen sulfide and carbon disulfide waste gas in chemical fiber industry according to claim 1, characterized in that, The plurality of guide plates (12) are installed in a zigzag shape, each guide plate (12) is installed obliquely, and each guide plate (12) is provided with a plurality of air holes.

4. The device for treating hydrogen sulfide and carbon disulfide waste gas in chemical fiber industry according to claim 1, characterized in that, A manhole (14) is installed on the side wall of the spray tower (1) at the position of the air distribution catalyst layer (8).

5. The hydrogen sulfide and carbon disulfide off-gas treatment device for the chemical fiber industry according to claim 1, characterized by, A pressure relief valve is installed in the air outlet (7).

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