Acetylene gas condensate water recycling system

Abstract

The utility model relates to the technical field of acetylene gas production equipment, in particular to an acetylene gas condensate water recycling system, which comprises an acetylene generator, a spray tower and a water scrubber which are communicated in sequence, and a positive water seal and a reverse water seal are communicated between the acetylene generator and the spray tower. The bottom of the spray tower is communicated with a condensate pipe, the condensate pipe is communicated with a condensate water storage tank, the condensate water storage tank is communicated with a condensate water delivery pump, and the pump-out end of the condensate water delivery pump is communicated with a condensate water delivery pipe; the water washing tower is communicated with a waste sodium hypochlorite pipe, the waste sodium hypochlorite pipe is communicated with a waste liquid storage tank, the waste liquid storage tank is communicated with a waste liquid conveying pump, and the pump-out end of the waste liquid conveying pump is communicated with the condensate water conveying pipe. According to the utility model, the condensate water in the acetylene gas production process can be repeatedly utilized, so that the amount of production water consumed for recycling the waste sodium hypochlorite is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of acetylene gas production equipment, in particular to an acetylene gas condensate water recovery and reuse system. Background Art

[0002] Acetylene gas production usually uses an acetylene generator, which is a device that can make water and calcium carbide react chemically to produce acetylene gas at a certain pressure. The acetylene generator is connected to a spray tower and a water scrubber in sequence. The acetylene gas treated by the spray tower and the water scrubber is compressed by a water ring compressor and then transported to the purification tower. In addition, the pipeline at the outlet of the acetylene generator is usually equipped with a positive water seal and a reverse water seal.

[0003] The purification system of the acetylene device requires the preparation of sodium hypochlorite solution to remove hydrogen sulfide and phosphine impurities in the acetylene gas from the generation system to the purification system. Three media, alkali solution, chlorine gas and production water, are required for preparation, and the production water consumption is relatively large.

[0004] Each acetylene generator is matched with a positive water seal and a reverse water seal. When the positive water seal and the reverse water seal are in operation and during maintenance and replacement, production water needs to be supplemented, resulting in a large consumption of production water.

[0005] Acetylene water ring compressor is a liquid ring compressor. During operation, pure water needs to be added to the pump chamber as the working fluid. Under the action of centrifugal force, the liquid injected into the pump body forms a rotating liquid ring to complete the input and output of gas, and the pure water consumption is large. Utility Model Content

[0006] The utility model aims to provide an acetylene gas condensate water recovery and reuse system to improve the problem of high water consumption in the process of recovering waste sodium hypochlorite.

[0007] The utility model is realized by the following technical solutions:

[0008] An acetylene gas condensate recovery and reuse system comprises an acetylene generator, a spray tower and a water washing tower which are connected in sequence, wherein the bottom of the spray tower is connected with a condensate pipe, the condensate pipe is connected with a condensate storage tank, the condensate storage tank is connected with a condensate delivery pump, and the pump outlet of the condensate delivery pump is connected with a condensate delivery pipe; the water washing tower is connected with a waste sodium hypochlorite pipe, the waste sodium hypochlorite pipe is connected with a waste liquid storage tank, the waste liquid storage tank is connected with a waste liquid delivery pump, the pump outlet of the waste liquid delivery pump is connected with a waste liquid delivery pipe, and the waste liquid delivery pipe is connected with the condensate delivery pipe.

[0009] Furthermore, the acetylene generator is connected to a flushing water pipe, one end of the flushing water pipe away from the acetylene generator is connected to a circulating water pipe through a pipeline, one end of the flushing water pipe away from the acetylene generator is connected to a production water pipe through a pipeline, a valve is provided on the pipeline between the flushing water pipe and the circulating water pipe, and a valve is provided on the pipeline between the flushing water pipe and the production water pipe.

[0010] Furthermore, water adding pipes are provided on the positive water seal and the reverse water seal, both water adding pipes are connected to the circulating water pipe through pipelines, both water adding pipes are connected to the production water pipe through pipelines, valves are provided on the pipelines between the two water adding pipes and the circulating water pipe, and valves are provided on the pipelines between the two water adding pipes and the production water pipe.

[0011] Furthermore, the air outlet of the water washing tower is connected to a water ring compressor, the water supply port of the water ring compressor is connected to a water supply pipe, the water supply pipe is connected to the production water pipe through a pipeline, and a valve is provided on the pipeline between the water supply pipe and the production water pipe.

[0012] Furthermore, a circulating liquid cooler is provided on the condensed water delivery pipe and the waste sodium hypochlorite pipe.

[0013] Furthermore, a water distribution pipe is provided between the condensed water delivery pipe and the spray head inside the spray tower.

[0014] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0015] In the utility model, since the purification of the acetylene device purification system requires the preparation of sodium hypochlorite solution to remove hydrogen sulfide and phosphine impurities in the acetylene gas from the generation system to the purification system, three media, alkali solution, chlorine gas and production water, are required for preparation, and the production water consumption is relatively large. During the normal production process of the acetylene device, the maximum temperature of the acetylene gas in the gas phase inlet of the spray tower from the acetylene generation process to the purification process is 78°C. Since a large amount of water vapor is entrained in the acetylene gas, the high-temperature acetylene gas in the spray tower will produce a part of condensate after spraying and washing in the spray tower. The condensed water generated in the spray tower is stored in the condensed water storage tank through the condensed water pipe. The condensed water delivery pump can be started to pump the condensed water into the condensed water delivery pipe. The waste sodium hypochlorite in the washing tower is stored in the waste liquid storage tank through the waste sodium hypochlorite pipe. The waste sodium hypochlorite is delivered to the waste sodium hypochlorite pipe through the waste liquid delivery pump. Since the condensed water delivery pipe is connected to the waste sodium hypochlorite pipe, it is convenient to mix the waste sodium hypochlorite with the condensed water and deliver it to the waste liquid recovery process, so that the condensed water can be recycled, which is beneficial to reduce the consumption of production water. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model.

[0017] In the attached picture:

[0018] Figure 1 This is a schematic diagram of the structure of Example 1 of the utility model.

[0019] Marks and corresponding parts names in the attached drawings:

[0020] 1. Acetylene generator; 2. Spray tower; 3. Water washing tower; 4. Positive water seal; 5. Reverse water seal; 6. Condensate pipe; 7. Condensate storage tank; 8. Condensate delivery pump; 9. Condensate delivery pipe; 10. Waste sodium hypochlorite pipe; 11. Waste liquid storage tank; 12. Waste liquid delivery pump; 13. Waste liquid delivery pipe; 14. Flushing water pipe; 15. Circulating water pipe; 16. Production water pipe; 17. Water ring compressor; 18. Water supply pipe; 19. Circulating liquid cooler; 20. Water distribution pipe. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in combination with the embodiments and drawings. The schematic implementation mode and description of the utility model are only used to explain the utility model and are not intended to limit the utility model. It should be noted that the utility model is already in the actual development and use stage.

[0022] Example 1

[0023] An acetylene gas condensate water recovery and reuse system, referring to Figure 1, including an acetylene generator 1, a spray tower 2 and a water washing tower 3 which are connected in sequence, a positive water seal 4 and a reverse water seal 5 are connected between the acetylene generator 1 and the spray tower 2, a condensate water pipe 6 is connected at the bottom of the spray tower 2, the condensate water pipe 6 is connected to a condensate water storage tank 7, the condensate water storage tank 7 is connected to a condensate water delivery pump 8, and the pump outlet of the condensate water delivery pump 8 is connected to a condensate water delivery pipe 9; the water washing tower 3 is connected to a waste sodium hypochlorite pipe 10, the waste sodium hypochlorite pipe 10 is connected to a waste liquid storage tank 11, the waste liquid storage tank 11 is connected to a waste liquid delivery pump 12, the pump outlet of the waste liquid delivery pump 12 is connected to a waste liquid delivery pipe 13, and the waste liquid delivery pipe 13 is connected to the condensate water delivery pipe 9. Since the purification system of the acetylene device needs to prepare sodium hypochlorite solution to remove hydrogen sulfide and phosphine impurities in the acetylene gas from the generation system to the purification system, three kinds of media, namely, alkali solution, chlorine gas and production water, are required for preparation, and the production water consumption is relatively large. During the normal production process of the acetylene device, the maximum temperature of the acetylene gas in the gas phase inlet of the spray tower 2 from the acetylene generation process to the purification process is 78°C. Since a large amount of water vapor is entrained in the acetylene gas, the high-temperature acetylene gas inlet of the spray tower 2 will produce a part of condensate after spray washing in the spray tower 2. The condensate generated in the spray tower 2 is stored in the condensate storage tank 7 through the condensate pipe 6. Start The condensate delivery pump 8 can pump the condensate into the condensate delivery pipe 9, store the waste sodium hypochlorite in the washing tower 3 in the waste liquid storage tank 11 through the waste sodium hypochlorite pipe 10, and deliver the waste sodium hypochlorite to the waste liquid delivery pipe 13 through the waste liquid delivery pump 12. Since the condensate delivery pipe 9 is connected to the waste sodium hypochlorite pipe 10, it is convenient to mix the waste sodium hypochlorite with the condensate and deliver it to the waste liquid recovery process. The acetylene gas in the waste liquid is recovered by the flash evaporation principle, and the waste liquid is cooled by the cooling tower and then reused in the purification system, which is convenient for configuring fresh sodium hypochlorite. The condensate is recycled, which is beneficial to reducing the consumption of production water.

[0024] As a preferred embodiment, refer to Figure 1The acetylene generator 1 is connected with a flushing water pipe 14, and the end of the flushing water pipe 14 away from the acetylene generator 1 is connected with a circulating water pipe 15 through a pipeline, and the end of the flushing water pipe 14 away from the acetylene generator 1 is connected with a production water pipe 16 through a pipeline, and a valve is provided on the pipeline between the flushing water pipe 14 and the circulating water pipe 15, and a valve is provided on the pipeline between the flushing water pipe 14 and the production water pipe 16. The circulating water pipe 15 refers to the circulating pipeline of the industrial circulating water system used by the factory for circulating cooling of equipment. The industrial circulating water system includes a circulating water pool and a circulating water pump. The circulating closed loop between the circulating water pool and the circulating water pump is realized through the circulating water pipe 15. In this embodiment, the water quality of the production water is higher than that of the circulating water. Therefore, when the circulating cooling water in the circulating water pool is sufficient, if the liquid level gauge inside the acetylene generator 1 is blocked, the valve on the pipeline between the flushing water pipe 14 and the circulating water pipe 15 is opened, and the circulating cooling water is used to flush the liquid level gauge in the acetylene generator 1; when the circulating cooling water in the circulating water pool is insufficient, the production water is used to flush the liquid level gauge.

[0025] As a preferred embodiment, refer to Figure 1 , both the positive water seal 4 and the reverse water seal 5 are provided with water supply pipes, both water supply pipes are connected with the circulating water pipe 15 through pipes, both water supply pipes are connected with the production water pipe 16 through pipes, both water supply pipes and the circulating water pipe 15 are provided with valves, and both water supply pipes and the production water pipe 16 are provided with valves. When the positive water seal 4 and the reverse water seal 5 are in operation and maintenance and replacement, it is necessary to supplement the production water, and the production water consumption is relatively large; when the circulating cooling water in the circulating water pool is sufficient, the valve on the pipe between the corresponding water supply pipe and the circulating water pipe 15 can be opened, that is, the circulating water is used to add water to the positive water seal 4 or the reverse water seal 5; when the circulating cooling water in the circulating water pool is insufficient, the production water is used to add water to the positive water seal 4 or the reverse water seal 5.

[0026] As a preferred embodiment, refer to Figure 1 The gas outlet of the water washing tower 3 is connected to a water ring compressor 17, and the water supply port of the water ring compressor 17 is connected to a water supply pipe 18. The water supply pipe 18 is connected to the production water pipe 16 through a pipeline, and a valve is provided on the pipeline between the water supply pipe 18 and the production water pipe 16. Since the cost of pure water is higher than that of production water, production water is preferentially used to supply water to the water ring compressor 17, which reduces the consumption of pure water and helps to reduce production costs. The production water pipe 16 is a pipeline with water pressure inside, and the water pressure inside the production water pipe 16 can be provided by a booster pump or a water pressure box.

[0027] As a preferred embodiment, refer to Figure 1 A circulating liquid cooler 19 is provided on the condensed water delivery pipe 9 and the waste sodium hypochlorite pipe 10 to slow down the decomposition of sodium hypochlorite by lowering the temperature of the waste sodium hypochlorite.

[0028] As a preferred embodiment, refer to Figure 1 A water distribution pipe 20 is provided between the condensed water delivery pipe 9 and the spray head inside the spray tower 2. The condensed water is delivered to the spray head in the spray tower 2 through the water distribution pipe 20. The spray head sprays the acetylene gas to realize the recycling of the condensed water.

[0029] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An acetylene gas condensate water recovery and reuse system, comprising an acetylene generator (1), a spray tower (2) and a water washing tower (3) which are connected in sequence, characterized in that: The bottom of the spray tower (2) is connected to a condensate pipe (6), the condensate pipe (6) is connected to a condensate storage tank (7), the condensate storage tank (7) is connected to a condensate delivery pump (8), and the pump outlet of the condensate delivery pump (8) is connected to a condensate delivery pipe (9); the water washing tower (3) is connected to a waste sodium hypochlorite pipe (10), the waste sodium hypochlorite pipe (10) is connected to a waste liquid storage tank (11), the waste liquid storage tank (11) is connected to a waste liquid delivery pump (12), the pump outlet of the waste liquid delivery pump (12) is connected to a waste liquid delivery pipe (13), and the waste liquid delivery pipe (13) is connected to the condensate delivery pipe (9).

2. The acetylene gas condensate water recovery and reuse system according to claim 1, characterized in that: The acetylene generator (1) is connected to a flushing water pipe (14), one end of the flushing water pipe (14) away from the acetylene generator (1) is connected to a circulating water pipe (15) via a pipeline, one end of the flushing water pipe (14) away from the acetylene generator (1) is connected to a production water pipe (16) via a pipeline, a valve is provided on the pipeline between the flushing water pipe (14) and the circulating water pipe (15), and a valve is provided on the pipeline between the flushing water pipe (14) and the production water pipe (16).

3. The acetylene gas condensate water recovery and reuse system according to claim 2, characterized in that: A positive water seal (4) and a reverse water seal (5) are provided between the acetylene generator (1) and the spray tower (2). Water supply pipes are provided on the positive water seal (4) and the reverse water seal (5). Both water supply pipes are connected to the circulating water pipe (15) through a pipeline. Both water supply pipes are connected to the production water pipe (16) through a pipeline. Valves are provided on the pipelines between the two water supply pipes and the circulating water pipe (15). Valves are provided on the pipelines between the two water supply pipes and the production water pipe (16).

4. The acetylene gas condensate water recovery and reuse system according to claim 3, characterized in that: The air outlet of the water washing tower (3) is connected to a water ring compressor (17), the water supply port of the water ring compressor (17) is connected to a water supply pipe (18), the water supply pipe (18) is connected to a production water pipe (16) through a pipeline, and a valve is provided on the pipeline between the water supply pipe (18) and the production water pipe (16).

5. The acetylene gas condensate water recovery and reuse system according to claim 1, characterized in that: The condensed water delivery pipe (9) and the waste sodium hypochlorite pipe (10) are both provided with a circulating liquid cooler (19).

6. The acetylene gas condensate water recovery and reuse system according to claim 1, characterized in that: A water distribution pipe (20) is provided between the condensed water delivery pipe (9) and the spray head inside the spray tower (2).

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