Refined cotton bleaching tail gas treatment device

Abstract

The utility model discloses a bleaching tail gas treatment device of refined cotton, and the dissolved air pipe is fixedly installed at the bottom of the tower body, the stirring roller is rotatably installed in the dissolved air pipe, the output shaft of motor is connected with the stirring roller in transmission through the lateral wall of tower body, the cover plate is fixedly installed in the tower body, one end of the air inlet pipe is communicated with the dissolved air pipe, the other end is communicated with the induced draft fan, a plurality of gas outlet pipes extending to the upward spraying area are arranged on the cover plate, the water inlet pipe of water pump is communicated with the water pump inlet, one end of the water outlet pipe is communicated with the water pump outlet, the other end of the water outlet pipe is arranged above the gas outlet pipe, the lower end surface of the cover plate is provided with the water leakage pipe extending to the downward liquid storage area, and the filter plate is fixedly installed in the tower body, the utility model has the advantages of increasing the contact time of tail gas and treatment reagent and effectively improving the tail gas treatment effect.

Description

Technical Field

[0001] This utility model relates to the technical field of refined cotton, specifically to a device for treating the exhaust gas from refined cotton bleaching. Background Technology

[0002] Chlorine dioxide is a major auxiliary agent in the bleaching of refined cotton, but it generates exhaust gas during the bleaching process. This exhaust gas has a strong odor and can affect the environment, necessitating its treatment. Currently, a common method for treating refined cotton bleaching exhaust gas is to use an aqueous solution of sodium hydroxide as an absorbent for spraying. However, this method is not very effective, and some bleaching exhaust gas still leaks out. To address this issue, a refined cotton bleaching exhaust gas treatment device has been proposed. Utility Model Content

[0003] The purpose of this invention is to provide a device for treating the exhaust gas from bleaching refined cotton, thereby overcoming the aforementioned shortcomings. The bleaching exhaust gas undergoes multiple thorough contacts with an aqueous solution of the chemical agent, resulting in excellent absorption and treatment effects.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0005] A refined cotton bleaching tail gas treatment device includes a hollow tower body with an outlet at the top. It also includes a dissolved gas pipe, a stirring roller, a motor, a cover plate, an air inlet pipe, a water pump, a water inlet pipe, a water outlet pipe, a filter plate, and a spray pipe. The dissolved gas pipe is fixedly installed at the bottom of the tower body via paired support columns and has multiple air holes. The stirring roller is rotatably installed inside the dissolved gas pipe. The motor is fixedly installed on the outer wall of the tower body, and its output shaft passes through the outer wall and is connected to the stirring roller. The cover plate is fixedly installed inside the tower body, above the dissolved gas pipe, and divides the tower body into an upper spray zone and a lower liquid storage zone. One end of the air inlet pipe passes through the outer wall of the tower body and the cover plate, connecting to the dissolved gas pipe; the other end of the air inlet pipe connects to an induced draft fan. The plate is equipped with multiple air outlet pipes extending upwards to the spray area. The water pump is fixedly installed on the outer wall of the tower body. The water inlet pipe is placed inside the tower body and connected to the water pump inlet. One end of the water outlet pipe is connected to the water pump outlet, and the other end of the water outlet pipe passes through the outer wall of the tower body and is positioned above the air outlet pipe. Multiple pressure atomizing nozzles are installed on the water outlet pipes, and the pressure atomizing nozzles correspond to the multiple air outlet pipes. A drain pipe extending downwards to the liquid storage area is installed on the lower end face of the cover plate. The drain pipe and the air outlet pipe connect the upper spray area and the lower liquid storage area. The filter plate is fixedly installed inside the tower body and is located above the pressure atomizing nozzles. The spray pipe is fixedly installed inside the tower body by a bracket and is located above the filter plate. The spray pipe is equipped with a row of spray heads.

[0006] Preferably, the pressure atomizing nozzle is provided with a conical dispersion cylinder.

[0007] Preferably, the lower end face of the drain pipe is submerged below the liquid surface of the lower storage area.

[0008] Preferably, a drain valve connected to the lower liquid storage area is provided on the outer wall of the tower body.

[0009] The beneficial effects that this utility model can achieve by adopting the above-mentioned technical solution are:

[0010] 1. By setting up a gas dissolving pipe and a stirring roller, the bleaching tail gas can be fully contacted with the treatment agent aqueous solution, which improves the tail gas absorption and treatment effect.

[0011] 2. By installing pressure atomizing nozzles on the water outlet pipe, the atomization effect of the treatment agent aqueous solution is improved, the contact area with the bleaching tail gas is increased, and the tail gas absorption and treatment effect is improved.

[0012] 3. By setting up filter plates and spray pipes, the number of contact times between the treatment agent aqueous solution and the bleaching tail gas is increased, further improving the tail gas absorption and treatment effect and protecting the environment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the dissolved gas tube in this utility model.

[0015] 1. Tower body; 2. Dissolved gas pipe; 3. Stirring roller; 4. Motor; 5. Cover plate; 6. Air inlet pipe; 7. Water pump; 8. Water inlet pipe; 9. Water outlet pipe; 10. Filter plate; 11. Spray pipe; 12. Air outlet; 13. Support column; 14. Air hole; 15. Air outlet pipe; 16. Pressure atomizing nozzle; 17. Drain pipe; 18. Support frame; 19. Spray head; 20. Conical dispersion cylinder; 21. Exhaust fan; 22. Upper spray zone; 23. Lower liquid storage zone; 24. Drain valve. Detailed Implementation

[0016] Depend on Figure 1 and Figure 2As shown, the refined cotton bleaching tail gas treatment device includes a hollow tower body 1 with an air outlet 12 at the upper end. It also includes a dissolved air pipe 2, a stirring roller 3, a motor 4, a cover plate 5, an air inlet pipe 6, a water pump 7, a water inlet pipe 8, a water outlet pipe 9, a filter plate 10, and a spray pipe 11. The dissolved air pipe 2 is fixedly installed at the bottom of the tower body 1 by paired support columns 13. The dissolved air pipe 2 has multiple air holes 14. The stirring roller 3 is rotatably installed inside the dissolved air pipe 2. The motor 4 is fixedly installed on the outer wall of the tower body 1, and its output shaft passes through the outer wall of the tower body 1 and is connected to the stirring roller 3 for transmission. The cover plate 5... Fixedly installed inside the tower body 1 and above the dissolved gas pipe 2, the cover plate 5 divides the tower body 1 into an upper spray zone 22 and a lower liquid storage zone 23. One end of the air inlet pipe 6 passes through the outer wall of the tower body 1 and the cover plate 5 and connects to the dissolved gas pipe 2. The other end of the air inlet pipe 6 is connected to the induced draft fan 21. Driven by the motor 4, the stirring roller 3 is rotated. When the exhaust gas enters the dissolved gas pipe 2 from the air inlet pipe 6, it achieves full contact with the treatment agent under the stirring action of the stirring roller 3. The cover plate 5 is provided with multiple air outlet pipes 15 extending upward to the spray zone 22. The water pump 7 is fixedly installed on the outer wall of the tower body 1. The inlet pipe 8 is placed inside the tower body 1 and connected to the inlet of the water pump 7. One end of the outlet pipe 9 is connected to the outlet of the water pump 7, and the other end of the outlet pipe 9 passes through the outer wall of the tower body 1 and is positioned above the exhaust pipe 15. Multiple pressure atomizing nozzles 16 are installed on the outlet pipe 9, each corresponding to one of the exhaust pipes 15. A conical dispersion cylinder 20 is provided on each pressure atomizing nozzle 16. A drain pipe 17 extending downwards to the liquid storage area 23 is installed on the lower end face of the cover plate 5. The lower end face of the drain pipe 17 is submerged below the liquid surface of the lower liquid storage area 23. Under the action of the water pump 7, the exhaust gas is atomized through the inlet pipe 8. The chemical agent is drawn into the pressure atomizing nozzle 16 on the water outlet pipe 9. The pressure atomizing nozzle 16 fully atomizes the chemical agent, which is then neutralized again with the exhaust gas discharged from the air outlet pipe 15. The water outlet pipe 17 and the air outlet pipe 15 connect the upper spraying area 22 and the lower liquid storage area 23. The filter plate 10 is fixedly installed inside the tower body 1. The filter plate 10 is located above the pressure atomizing nozzle 16. The spray pipe 11 is fixedly installed inside the tower body 1 through the bracket 18. The spray pipe 11 is located above the filter plate 10. The spray pipe 11 is provided with a row of spray heads 19. A drain valve 24 connected to the lower liquid storage area 23 is provided on the outer wall of the tower body 1.

[0017] In use, the exhaust gas treatment agent aqueous solution is filled to the area below the cover plate 5. The drive motor 4 controls the rotation of the stirring roller 3. The bleaching exhaust gas is sent into the dissolved gas pipe 2 inside the tower body 1 through the air inlet pipe 6 under the action of the induced draft fan 21. Under the stirring action of the stirring roller 3, the bleaching exhaust gas can be more fully absorbed by the exhaust gas treatment agent. After absorption, the exhaust gas flows out from the air hole 14 on the dissolved gas pipe 2 and drifts out from the air outlet pipe 15. The water pump 7 is then driven to pump the exhaust gas treatment agent aqueous solution through the water pump. 7. The gas enters the pressure atomizing nozzle 16, forming a mist spray, which further absorbs the exhaust gas. After two-step absorption, the exhaust gas is filtered by the filter plate 10 to separate the gas and liquid. The treated exhaust gas flows out through the outlet 12 of the tower body 1. The spray pipe 11 washes the residue on the filter plate 10 into the tower body 1 through the spray head 19. The residue on the cover plate 5 and the exhaust gas treatment agent sprayed from the pressure atomizing nozzle 16 will fall from the drain pipe 17 into the agent pool below the cover plate 5.

Claims

1. A device for treating exhaust gas from bleaching refined cotton, comprising a hollow tower body (1) with an exhaust port (12) at its upper end, characterized in that: It also includes a dissolved air pipe (2), a stirring roller (3), a motor (4), a cover plate (5), an air inlet pipe (6), a water pump (7), a water inlet pipe (8), a water outlet pipe (9), a filter plate (10), and a spray pipe (11). The dissolved air pipe (2) is fixedly installed at the bottom of the tower body (1) by a pair of support columns (13). The dissolved air pipe (2) has multiple air holes (14). The stirring roller (3) is rotatably installed inside the dissolved air pipe (2). The motor (4) is fixedly installed on the outer wall of the tower body (1). The motor (4) outputs... The output shaft passes through the outer wall of the tower body (1) and is connected to the stirring roller (3) for transmission. The cover plate (5) is fixedly installed inside the tower body (1) and located above the dissolved gas pipe (2). The cover plate (5) divides the tower body (1) into an upper spray zone (22) and a lower liquid storage zone (23). One end of the air inlet pipe (6) passes through the outer wall of the tower body (1) and the cover plate (5) and is connected to the dissolved gas pipe (2). The other end of the air inlet pipe (6) is connected to the induced draft fan (21). The cover plate (5) is provided with multiple air outlet pipes extending upward to the spray zone (22). (15) The water pump (7) is fixedly installed on the outer wall of the tower body (1). The water inlet pipe (8) is placed inside the tower body (1) and connected to the inlet of the water pump (7). One end of the water outlet pipe (9) is connected to the outlet of the water pump (7). The other end of the water outlet pipe (9) passes through the outer wall of the tower body (1) and is placed above the air outlet pipe (15). Multiple pressure atomizing nozzles (16) are installed on the water outlet pipe (9). The pressure atomizing nozzles (16) correspond to multiple air outlet pipes (15). The lower end of the cover plate (5) A drain pipe (17) extending downward to the liquid storage area (23) is installed on the surface. The drain pipe (17) and the air outlet pipe (15) connect the upper spray area (22) and the lower liquid storage area (23). The filter plate (10) is fixedly installed inside the tower body (1). The filter plate (10) is located above the pressure atomizing nozzle (16). The spray pipe (11) is fixedly installed inside the tower body (1) by a bracket (18). The spray pipe (11) is located above the filter plate (10). The spray pipe (11) is provided with a row of spray heads (19).

2. The purified cotton bleaching off-gas treatment device according to claim 1, characterized by: A conical dispersion cylinder (20) is provided on the pressure atomizing nozzle (16).

3. The refined cotton bleaching tail gas treatment device according to claim 1 or 2, characterized in that: The lower end face of the drain pipe (17) is submerged below the liquid surface of the lower liquid storage area (23).

4. The bleaching off gas treatment device for refined cotton according to claim 1 or 2, characterized by: A drain valve (24) connected to the lower liquid storage area (23) is provided on the outer wall of the tower body (1).

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