Steam extraction device for chloro-amine wastewater

Abstract

The utility model relates to a chloro-amine wastewater steam extraction device, which belongs to the technical field of wastewater treatment and comprises a reaction tank body, a liquid discharge pipe, a gas outlet, an alkali liquor adding pipe, an alkali liquor storage tank, a stirring shaft, a stirring rod, a liquid distribution hole, a driving mechanism, a rotating joint and a condensing device, and the condensing device comprises a condensing tank, a gas distribution conical disc, a gas distribution hole, a mounting hole plate, a cooling pipe and a cooling water pipe. The top of the cooling water pipe is communicated with a cooling water outlet pipe, and the bottom of the cooling water pipe is communicated with a cooling water inlet pipe. According to the utility model, after entering the condensing box from the gas inlet pipe, gas is uniformly distributed through the gas distribution conical disc, uniformly enters the plurality of cooling pipes, and then exchanges heat with cooling water entering from the cooling water pipe in the cooling pipes, so that condensation is completed, the condensation effect of gasified wastewater is better, and subsequent reaction is facilitated; and the condensed liquid can enter the liquid distribution holes along the liquid channel of the stirring shaft and is uniformly distributed in the alkali liquid in a rotating manner, so that the reaction effect is better.

Description

Technical Field

[0001] This utility model relates to a vapor extraction device for chlorinated amine wastewater, belonging to the field of wastewater treatment technology. Background Technology

[0002] Chlorinated amines are the main raw materials for the production of clethodim, bensulfuron-methyl, and thiamethoxam. The production process generates wastewater, which can be treated and recycled. Current chlorinated amine wastewater recovery devices typically recover wastewater from high-temperature reactors. The gasified wastewater from the high-temperature reactor is then liquefied in a cooling tank using condenser coils. Ammonia gas is then generated by reacting alkaline solution with ammonia in the wastewater, and the ammonia is collected and recovered. However, current methods suffer from poor cooling of the gasified wastewater in the condenser coils, resulting in some wastewater failing to condense and affecting subsequent reactions. Utility Model Content

[0003] This invention provides a vapor extraction device for chlorinated amine wastewater, which solves the problems existing in the background art.

[0004] This utility model relates to a vapor extraction device for chloroamine wastewater, including a reaction tank. A drain pipe is located at the bottom of the reaction tank, and an outlet and an alkali inlet pipe are located at the top of the reaction tank. The alkali inlet pipe is connected to an alkali storage tank. A stirring shaft is rotatably mounted inside the reaction tank. A stirring rod is fixed to the lower part of the stirring shaft, and liquid distribution holes are evenly distributed at the bottom of the stirring rod. A drive mechanism is connected to the upper part of the stirring shaft, and a rotary joint is fixed to the top of the stirring shaft. A liquid channel connecting the liquid distribution holes and the rotary joint is provided inside the stirring shaft. A condensing device is connected to the top of the rotary joint. The condensing device includes a condensing box, an inlet pipe at the top of the condensing box, a conical gas distribution cone below the inlet pipe, gas distribution holes evenly distributed on the gas distribution cone, and a mounting plate below the gas distribution cone. Multiple cooling pipes are evenly fixed to the mounting plate, and each cooling pipe is fitted with a cooling water pipe. A cooling water outlet pipe is connected to the top of the cooling water pipe, and a cooling water inlet pipe is connected to the bottom of the cooling water pipe.

[0005] As a preferred embodiment, a conical partition plate 1 is fixed to the top of the cooling water pipe, a partition plate 2 is fixed to the bottom of the cooling water pipe, and a partition plate 3 is fixed to the bottom of the cooling water pipe. A water inlet area is formed between partition plate 3 and partition plate 2, which connects to the bottom of the cooling water pipe. The water inlet area connects to the cooling water inlet pipe. A water outlet area is formed between partition plate 1 and the mounting plate, which connects the top of the cooling water pipe and the cooling water outlet pipe. This can separate the cooling water and increase the cooling effect.

[0006] As a preferred embodiment, an inlet ring pipe is fitted around the condenser box outside the water inlet area. Multiple connecting pipes that connect to the water inlet area are evenly fixed on the inner side of the inlet ring pipe. The cooling water inlet pipe is connected to the inlet ring pipe and supplies water along the tangential direction of the inlet ring pipe. This allows the cooling water entering the water inlet area through the cooling water inlet pipe to be distributed more evenly, resulting in better cooling effect.

[0007] As a preferred option, the reaction vessel is covered with an insulation jacket, which is connected to an insulation supply pipe and an insulation outlet pipe.

[0008] As a preferred embodiment, a demister is fixed to the top of the air outlet, and a demister is installed inside the demister. An ammonia outlet pipe is connected to the top of the demister to remove mist from the discharged ammonia.

[0009] As a preferred option, a corrugated pipe is provided on the ammonia outlet pipe, and a dehumidifier is provided on the ammonia outlet pipe below the corrugated pipe, which can make the discharged ammonia gas drier.

[0010] As a preferred embodiment, the dehumidifier includes an outer cylinder, the bottom of which is fixedly connected to an ammonia outlet pipe at the bottom, and a cover plate for connecting a corrugated pipe is fixedly fixed to the top of the outer cylinder. An inner cylinder is provided inside the outer cylinder, and a support mesh is provided at the bottom of the inner cylinder. A desiccant is provided in the inner cylinder above the support mesh. A threaded groove is provided at the bottom of the cover plate, and the top thread of the inner cylinder is installed in the threaded groove, which allows the cover plate to be opened easily so that the inner cylinder can be removed to replace the desiccant.

[0011] As a preferred embodiment, the drive mechanism includes a first sprocket fixed on the stirring shaft, a second sprocket connected by a chain, a drive motor fixedly connected to the second sprocket, the drive motor fixed on a mounting bracket, and the mounting bracket fixed on the reaction vessel body.

[0012] This utility model has the following beneficial effects:

[0013] After the gas enters the condenser through the inlet pipe, it is first evenly distributed through the gas distribution cone and then evenly enters multiple cooling pipes. In the cooling pipes, it exchanges heat with the cooling water entering through the cooling water pipes to complete the condensation. The condensate in the cooling pipes flows into the lower part of the condenser and then into the reaction tank. The condensation effect of the gasification wastewater is better, which is beneficial to the subsequent reaction. Furthermore, the condensed liquid can enter the liquid distribution hole through the liquid channel of the stirring shaft and rotate evenly distributed in the alkaline solution, resulting in a better reaction effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0015] Figure 2 for Figure 1 Partial structural diagram Figure 1 ;

[0016] Figure 3 for Figure 1 Partial structural diagram Figure 2 ;

[0017] In the diagram: 1. Inlet pipe; 2. Condensation device; 21. Cooling water inlet pipe; 22. Water inlet ring pipe; 23. Partition plate two; 24. Cooling water pipe; 25. Partition plate one; 26. Cooling pipe; 27. Condensation box; 28. Gas distribution cone; 29. ​​Mounting orifice plate; 210. Cooling water outlet pipe; 211. Connecting pipe; 212. Partition plate three; 3. Rotary joint; 4. Stirring shaft; 5. Alkali storage tank; 6. Dehumidifier; 61. Outer cylinder; 62. Inner cylinder; 63. Support mesh; 64. Cover plate; 7. Insulation jacket; 8. Reaction tank; 9. Stirring rod; 10. Alkali inlet pipe; 11. Drive motor; 12. Demister; 13. Corrugated pipe; 14. Demister; 15. Ammonia outlet pipe. Detailed Implementation

[0018] The present invention will be further described below with reference to the embodiments.

[0019] Example 1, such as Figures 1 to 3 As shown, this utility model is a vapor extraction device for chloroamine wastewater, including a reaction tank 8. The bottom of the reaction tank 8 is equipped with a drain pipe, and the top of the reaction tank 8 is equipped with a gas outlet and an alkali inlet pipe 10. The alkali inlet pipe 10 is connected to an alkali storage tank 5. A stirring shaft 4 is rotatably installed inside the reaction tank 8. A stirring rod 9 is fixed to the lower part of the stirring shaft 4. Liquid distribution holes are evenly distributed at the bottom of the stirring rod 9. A drive mechanism is connected to the upper part of the stirring shaft 4, and a rotary joint 3 is fixed to the top of the stirring shaft 4. A liquid channel communicating with the liquid distribution holes and the rotary joint 3 is provided inside the stirring shaft 4. A condensing device 2 is connected to the top of the rotary joint 3. The condensing device 2 includes a condensation box 27. The top of the condenser 27 is provided with an air inlet pipe 1, and below the air inlet pipe 1 is a conical air distribution cone 28. The air distribution cone 28 is provided with evenly distributed air distribution holes. Below the air distribution cone 28 is a mounting plate 29. Multiple cooling pipes 26 are evenly fixed on the mounting plate 29. Each cooling pipe 26 is covered with a cooling water pipe 24. The top of the cooling water pipe 24 is connected to a cooling water outlet pipe 210, and the bottom of the cooling water pipe 24 is connected to a cooling water inlet pipe 21.

[0020] During operation, the drive mechanism rotates the stirring shaft 4, which in turn rotates the stirring rod 9. The alkali solution in the alkali storage tank 5 enters the reaction tank 8. The wastewater vapor generated during the production of chloroamine enters the condenser 27 through the air inlet pipe 1, and then is guided and evenly distributed by the gas distribution cone 28. It then enters multiple cooling pipes 26 evenly. While flowing in the cooling pipes 26, it exchanges heat with the cooling water entering through the cooling water pipe 24 and condenses. The condensed liquid flows to the bottom of the condenser 27 for collection, and then enters the liquid channel inside the stirring shaft 4 through the rotary joint 3. It then flows out from the liquid distribution hole and mixes evenly with the alkali solution in the reaction tank 8. The ammonia gas generated after the reaction is discharged from the gas outlet.

[0021] In Example 2, based on Example 1, a conical partition plate 25 is fixed to the top of the cooling water pipe 24, a partition plate 23 is fixed to the bottom of the cooling water pipe 24, and a partition plate 212 is fixed to the bottom of the cooling pipe 26. A water inlet area is formed between the partition plate 212 and the partition plate 23, connecting the bottom of the cooling water pipe 24. This water inlet area connects to the cooling water inlet pipe 21. A water outlet area is formed between the partition plate 25 and the mounting plate 29, connecting the top of the cooling water pipe 24 and the cooling water outlet pipe 210. After entering the water inlet area, the cooling water inlet pipe 21 provides initial cooling to the cooling pipe 26. Then, the cooling water enters the cooling water pipe 24 for secondary cooling of the cooling pipe 26. Finally, it enters the water outlet area for tertiary cooling of the cooling pipe 26, resulting in a better cooling effect.

[0022] A water inlet ring pipe 22 is fitted around the condenser box 27 outside the water inlet area. Multiple connecting pipes 211 that connect to the water inlet area are evenly fixed inside the water inlet ring pipe 22. The cooling water inlet pipe 21 is connected to the water inlet ring pipe 22 and supplies water along the tangent of the water inlet ring pipe 22. The cooling water inlet pipe 21 supplies water along the tangent of the water inlet ring pipe 22, and then enters the water inlet area evenly through the connecting pipes 211.

[0023] The reaction vessel 8 is covered with an insulation jacket 7, which is connected to an insulation supply pipe and an insulation outlet pipe.

[0024] A demister 12 is fixed to the top of the gas outlet. A demister 14 is installed inside the demister 12. An ammonia outlet pipe 15 is connected to the top of the demister 12. The ammonia gas discharged from the ammonia outlet pipe 15 enters the ammonia storage tank, and then is compressed into liquid by a pressurizing device and enters the storage tank for convenient use of liquid ammonia.

[0025] A corrugated pipe 13 is provided on the ammonia outlet pipe 15, and a dehumidifier 6 is provided on the ammonia outlet pipe 15 below the corrugated pipe 13.

[0026] The dehumidifier 6 includes an outer cylinder 61, the bottom of which is fixedly connected to the lower ammonia outlet pipe 15. A cover plate 64, connecting to a bellows pipe 13, is fixed to the top of the outer cylinder 61 by bolts. A sealing ring is provided between the cover plate 64 and the outer cylinder 61. An inner cylinder 62 is located inside the outer cylinder 61. A support mesh 63 is provided at the bottom of the inner cylinder 62. Desiccant is placed inside the inner cylinder 62 above the support mesh 63. A threaded groove is provided at the bottom of the cover plate 64, and the top of the inner cylinder 62 is threaded into this groove. To replace the desiccant, remove the bolts on the cover plate 64, then move the cover plate 64 upwards to compress the bellows pipe 13. Then, remove the inner cylinder 62 upwards and remove the desiccant for replacement.

[0027] The drive mechanism includes a sprocket 1 fixed on the stirring shaft 4, a sprocket 2 connected by a chain, a drive motor 11 fixedly connected to the sprocket 2, the drive motor 11 fixed on the mounting bracket, and the mounting bracket fixed on the reaction vessel 8.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0029] In the description of this utility model, the terms "inner", "outer", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not require that this utility model must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

Claims

1. A chloroamine wastewater stripping device, comprising a reaction tank body (8), the bottom of the reaction tank body (8) is provided with a liquid discharge pipe, the top of the reaction tank body (8) is provided with a gas outlet and a lye adding pipe (10), the lye adding pipe (10) is connected with a lye storage tank (5), characterized in that: A stirring shaft (4) is rotatably installed in the reaction tank body (8), a stirring rod (9) is fixed to the lower part of the stirring shaft (4), the bottom of the stirring rod (9) is uniformly provided with liquid distribution holes, a driving mechanism is connected to the upper part of the stirring shaft (4), a rotary joint (3) is fixed to the top of the stirring shaft (4), a liquid channel is arranged in the stirring shaft (4) and communicates with the liquid distribution holes and the rotary joint (3), a condensing device (2) is connected to the top of the rotary joint (3), the condensing device (2) comprises a condensing box (27), the top of the condensing box (27) is provided with an air inlet pipe (1), the lower part of the air inlet pipe (1) is provided with a conical air distribution cone disc (28), the air distribution cone disc (28) is uniformly provided with air distribution holes, the lower part of the air distribution cone disc (28) is provided with a mounting hole plate (29), a plurality of cooling pipes (26) are fixed on the mounting hole plate (29), the outside of each cooling pipe (26) is sleeved with a cooling water pipe (24), the top of the cooling water pipe (24) is communicated with a cooling water outlet pipe (210), the bottom of the cooling water pipe (24) is communicated with a cooling water inlet pipe (21).

2. A chloroamine wastewater stripping apparatus according to claim 1, characterized in that: The top of the cooling water pipe (24) is fixed with a conical partition plate one (25), the bottom of the cooling water pipe (24) is fixed with a partition plate two (23), the bottom of the cooling pipe (26) is fixed with a partition plate three (212), the partition plate three (212) and the partition plate two (23) form a water inlet area which communicates with the bottom of the cooling water pipe (24), the water inlet area communicates with the cooling water inlet pipe (21), the partition plate one (25) and the mounting hole plate (29) form a water outlet area which communicates with the top of the cooling water pipe (24) and the cooling water outlet pipe (210).

3. A chloroamine waste stripping apparatus according to claim 2, characterised in that: The outside of the condensing box (27) on the outside of the water inlet area is sleeved with a water inlet ring pipe (22), the inside of the water inlet ring pipe (22) is uniformly fixed with a plurality of communication pipes (211) which communicate with the water inlet area, the cooling water inlet pipe (21) is connected to the water inlet ring pipe (22) and supplies water along the tangent direction of the water inlet ring pipe (22).

4. A chloroamine wastewater stripping apparatus according to claim 1, characterized in that: The outside of the reaction tank body (8) is sleeved with a heat preservation jacket (7), the heat preservation jacket (7) is connected with a heat preservation liquid supply pipe and a heat preservation liquid outlet pipe.

5. A chloroamine waste stripping apparatus according to claim 1, characterized in that: The top of the gas outlet is fixed with a demisting tower (12), the demisting tower (12) is provided with a demister (14), the top of the demisting tower (12) is connected with an ammonia gas outlet pipe (15).

6. A chloroamine waste water stripping apparatus according to claim 5, characterised in that: A section of corrugated pipe (13) is arranged on the ammonia gas outlet pipe (15), a dehumidifier (6) is arranged on the ammonia gas outlet pipe (15) below the corrugated pipe (13).

7. A chloroamine waste water stripping apparatus according to claim 6, characterised in that: The dehumidifier (6) comprises an outer cylinder (61), the bottom of the outer cylinder (61) is fixedly connected with the lower part of the ammonia gas outlet pipe (15), the top of the outer cylinder (61) is fixed with a cover plate (64) connected with the corrugated pipe (13), the outer cylinder (61) is provided with an inner cylinder (62), the bottom of the inner cylinder (62) is provided with a support net (63), the inner cylinder (62) above the support net (63) is provided with a drying agent, the bottom of the cover plate (64) is provided with a threaded groove, the top of the inner cylinder (62) is threadedly installed in the threaded groove.

8. A chloroamine wastewater stripping apparatus according to claim 1, characterized in that: The driving mechanism comprises a chain wheel I fixed on the stirring shaft (4), a chain wheel II connected with the chain wheel I through a chain, the chain wheel II being fixedly connected with a driving motor (11), the driving motor (11) being fixed on a mounting rack, and the mounting rack being fixed on the reaction tank body (8).

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