Online cleaning device for ammonia distillation wastewater pipeline

Abstract

The utility model relates to an on-line cleaning device for an ammonia distillation wastewater pipeline, which comprises an ammonia distillation tower, an inlet of the ammonia distillation tower is connected with a residual wastewater pipeline, the bottom of the ammonia distillation tower is provided with an ammonia distillation wastewater outlet, the ammonia distillation wastewater outlet is sequentially connected with an ammonia distillation wastewater pump and an ammonia distillation wastewater cooler through pipelines, and the ammonia distillation wastewater cooler is respectively connected with a wastewater adjusting tank and an accident tank. The residual wastewater treatment device further comprises a cleaning agent circulating tank, a cleaning tank water outlet pipe of the cleaning agent circulating tank is connected between the ammonia still and the ammonia still wastewater pump, and a cleaning tank water return pipe of the cleaning agent circulating tank is connected between the wastewater adjusting tank and the accident tank. According to the utility model, tar adhered to the inner wall of the pipeline and the ammonia distillation wastewater cooler can be effectively removed, the resistance of the outlet of the ammonia distillation wastewater pump is reduced, the working efficiency of the ammonia distillation wastewater cooler is improved, and a large amount of manpower and material resources are saved compared with personnel.

Description

Technical Field

[0001] The utility model relates to the technical field of ammonia water treatment, in particular to an on-line cleaning device for ammonia distillation wastewater pipelines. Background Art

[0002] A large amount of tar is contained in the circulating ammonia water of the coke oven. To ensure the quality of the circulating ammonia water, most of the tar in the circulating ammonia water is removed through a mechanized clarifying tank and then sent back to the coke oven for recycling. Since the combined water contained in the coal is all transferred to the circulating ammonia water, the amount of circulating ammonia water increases, and it is necessary to treat the excess circulating ammonia water (i.e., the surplus ammonia water).

[0003] The prior art uses an ammonia distillation tower to treat the surplus ammonia water. After treatment, the ammonia distillation wastewater also contains a small amount of substances such as tar. During the process of wastewater cooler and pipeline transportation, due to the decrease in temperature, part of the tar adheres to the pipe wall. After long-term operation, the outlet pressure of the ammonia distillation wastewater pump increases, and the heat exchange efficiency of the wastewater cooler decreases, resulting in an increase in the outlet wastewater temperature. In severe cases, the entire transportation pipeline is blocked, causing the production to be forced to stop for treatment. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide an on-line cleaning device for ammonia distillation wastewater pipelines, which solves the problem of the ammonia distillation tower being forced to stop production due to blockage of the ammonia distillation wastewater pipeline, wastewater cooler, etc., and at the same time reduces the working difficulty during the cleaning process.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] An on-line cleaning device for ammonia distillation wastewater pipelines includes an ammonia distillation tower. The inlet of the ammonia distillation tower is connected to the surplus wastewater pipeline. The bottom of the ammonia distillation tower is provided with an ammonia distillation wastewater outlet. The ammonia distillation wastewater outlet is connected to an ammonia distillation wastewater pump and an ammonia distillation wastewater cooler in sequence through pipelines. The ammonia distillation wastewater cooler is respectively connected to a wastewater regulation tank and an accident tank. The surplus wastewater treatment device further includes a cleaning agent circulation tank. The cleaning tank outlet pipe of the cleaning agent circulation tank is connected between the ammonia distillation tower and the ammonia distillation wastewater pump. The cleaning tank return pipe of the cleaning agent circulation tank is connected between the wastewater regulation tank and the accident tank.

[0007] An ammonia distillation wastewater outlet valve is provided on the ammonia distillation wastewater outlet.

[0008] A wastewater regulation tank valve is provided at the inlet of the wastewater regulation tank.

[0009] An accident tank valve is provided at the inlet of the accident tank.

[0010] A cleaning valve one is provided on the cleaning tank outlet pipe.

[0011] A cleaning valve two and a cleaning valve three are respectively provided at the head and the tail of the cleaning tank return pipe.

[0012] Compared with the existing technology, the beneficial effects of the utility model are as follows:

[0013] The utility model can effectively remove the tar adhered to the inner wall of the pipeline and in the ammonia distillation wastewater cooler, reduce the resistance at the outlet of the ammonia distillation wastewater pump, and improve the working efficiency of the ammonia distillation wastewater cooler at the same time. Compared with manual cleaning, it saves a large amount of manpower and material resources. It can be used for cleaning the ammonia distillation wastewater delivery pipeline, ammonia distillation tower, ammonia distillation wastewater heat exchanger, etc. Brief Description of the Drawings

[0014] Figure 1 It is a schematic diagram of the utility model.

[0015] In the figure: ammonia distillation tower 1, residual wastewater pipeline 2, cleaning agent circulation tank 3, ammonia distillation wastewater pump 4, ammonia distillation wastewater cooler 5, wastewater regulation tank 6, accident tank 7, cleaning tank outlet pipe 8, cleaning tank return pipe 9, ammonia distillation wastewater outlet valve 10, wastewater regulation tank valve 11, accident tank valve 12, cleaning valve 1 13, cleaning valve 2 14, cleaning valve 3 15. Detailed Embodiment

[0016] In the description of the present utility model, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is more than two.

[0017] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0018] An on-line cleaning device for ammonia distillation wastewater pipeline, comprising an ammonia distillation tower 1, the inlet of the ammonia distillation tower 1 is connected to the residual wastewater pipeline 2, the bottom of the ammonia distillation tower 1 is provided with an ammonia distillation wastewater outlet, and the ammonia distillation wastewater outlet is connected to an ammonia distillation wastewater pump 4 and an ammonia distillation wastewater cooler 5 in sequence through pipelines. The ammonia distillation wastewater cooler 5 is respectively connected to a wastewater regulation tank 6 and an accident tank 7. The residual wastewater treatment device further comprises a cleaning agent circulation tank 3. The cleaning tank outlet pipe 8 of the cleaning agent circulation tank 3 is connected between the ammonia distillation tower 1 and the ammonia distillation wastewater pump 4, and the cleaning tank return pipe 9 of the cleaning agent circulation tank 3 is connected between the wastewater regulation tank 6 and the accident tank 7.

[0019] An ammonia distillation wastewater outlet valve 10 is provided on the ammonia distillation wastewater outlet described above.

[0020] A wastewater regulating tank valve 11 is provided at the inlet of the wastewater regulating tank 6 described above.

[0021] An accident tank valve 12 is provided at the inlet of the accident tank 7 described above.

[0022] A cleaning valve one 13 is provided on the cleaning tank outlet pipe 8 described above.

[0023] A cleaning valve two 14 and a cleaning valve three 15 are respectively provided at the head and the tail of the cleaning tank return pipe 9 described above.

[0024] On-line cleaning operation:

[0025] After the ammonia distillation tower stops production, close the ammonia distillation wastewater outlet valve 10. At the same time, add the remaining ammonia water and halogenated alcohol polyoxyethylene into the cleaning agent circulation tank 3, close the wastewater regulating tank valve 11, close the accident tank valve 12, open the cleaning valve two 14 and the cleaning valve three 15 on the cleaning tank return pipe 9, open the cleaning valve one 13 on the cleaning tank outlet pipe 8, start the ammonia distillation wastewater pump 4, conduct circulating cleaning on the ammonia distillation wastewater pipeline, and supplement the agent.

[0026] After the cleaning is completed, open the accident tank valve 12, close the cleaning valve three 15 on the cleaning tank return pipe 9, and discharge the cleaning agent and the remaining ammonia water in the pipeline and the cleaning agent circulation tank 3 into the accident tank 7.

[0027] After the cleaning agent and the remaining ammonia water in the pipeline and the cleaning agent circulation tank 3 are drained, re-add the remaining ammonia water and the pipeline coating agent into the cleaning agent circulation tank 3, close the accident tank valve 12, open the cleaning valve three 15 on the cleaning tank return pipe 9 to conduct circulating cleaning and coating on the pipeline. After the coating is completed, discharge the coating agent and the remaining ammonia water into the accident tank 7.

[0028] To make the purpose, technical solutions and technical effects of the present utility model clearer, the technical solutions in the embodiments of the present utility model are now clearly and completely described. However, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Combining the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model. Embodiment

[0029] An on-line cleaning device for ammonia distillation wastewater pipeline, comprising an ammonia distillation tower 1. The inlet of the ammonia distillation tower 1 is connected to the remaining wastewater pipeline 2. The bottom of the ammonia distillation tower 1 is provided with an ammonia distillation wastewater outlet, and the ammonia distillation wastewater outlet is sequentially connected to an ammonia distillation wastewater pump 4 and an ammonia distillation wastewater cooler 5 through pipelines. An ammonia distillation wastewater outlet valve 10 is provided on the ammonia distillation wastewater outlet. A wastewater regulating tank valve 11 is provided on the inlet of the wastewater regulating tank 6. An accident tank valve 12 is provided on the inlet of the accident tank 7.

[0030] The ammonia distillation wastewater cooler 5 is respectively connected to the wastewater regulating tank 6 and the accident tank 7. A liquid guide pipe is connected between the wastewater regulating tank 6 and the accident tank 7, and the two ends of the liquid guide pipe are respectively at the front ends of the inlets of the wastewater regulating tank valve 11 and the accident tank valve 12.

[0031] The remaining wastewater treatment device further comprises a cleaning agent circulation tank 3. The cleaning tank outlet pipe 8 of the cleaning agent circulation tank 3 is connected between the ammonia distillation wastewater outlet valve 10 and the inlet of the ammonia distillation wastewater pump 4, and the cleaning tank return pipe 9 of the cleaning agent circulation tank 3 is connected to the liquid guide pipe between the wastewater regulating tank 6 and the accident tank 7. A cleaning valve one 13 is provided on the cleaning outlet pipe. A cleaning valve two 14 and a cleaning valve three 15 are respectively provided at the head and the tail of the cleaning return pipe.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An online clearing device for ammonia evaporation wastewater pipeline, comprising an ammonia evaporation tower, the inlet of which is connected to the residual wastewater pipeline, and the bottom of which is provided with an ammonia evaporation wastewater outlet, characterized in that: The outlet of ammonia evaporation wastewater is connected to the ammonia evaporation wastewater pump and the ammonia evaporation wastewater cooler in sequence through pipelines. The ammonia evaporation wastewater cooler is connected to the wastewater regulating tank and the accident tank respectively. The remaining wastewater treatment device also includes a cleaning agent circulation tank. The cleaning tank outlet pipe of the cleaning agent circulation tank is connected between the ammonia evaporation tower and the ammonia evaporation wastewater pump. The cleaning tank return pipe of the cleaning agent circulation tank is connected between the wastewater regulating tank and the accident tank.

2. The online clearing device for ammonia wastewater pipeline according to claim 1, characterized in that: The ammonia evaporation wastewater outlet is provided with an ammonia evaporation wastewater outlet valve.

3. The online clearing device for ammonia wastewater pipeline according to claim 1, characterized in that: A wastewater regulating tank valve is arranged on the inlet of the wastewater regulating tank.

4. The online clearing device for ammonia wastewater pipeline according to claim 1, characterized in that: An accident pool valve is arranged on the inlet of the accident pool.

5. The online clearing device for ammonia wastewater pipeline according to claim 1, characterized in that: A cleaning valve 1 is arranged on the water outlet pipe of the cleaning tank.

6. The online clearing device for ammonia wastewater pipeline according to claim 1, characterized in that: A cleaning valve 2 and a cleaning valve 3 are respectively arranged at the head and tail of the water return pipe of the cleaning tank.

Images