Caustic soda production device capable of improving halogen doping ratio
By improving the connection relationship of caustic soda production equipment and adding recycled water return channel, the problem of increasing the cost of solid raw salt is solved, the halogen doping ratio and the brine utilization rate are improved, and the production cost and economic benefits are reduced.
Patent Information
- Application Number
- CN202421721524.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-07-19
AI Technical Summary
In the prior art, the cost of purchasing and transporting solid raw salts increases, resulting in difficulty in increasing the halogen doping ratio, which in turn increases the cost of caustic soda production.
By setting up brine transmission pipelines, brine storage tanks and water pumps related to brine transport, the connection relationship between different devices is improved, the amount of brine and recycled water is adjusted in real time, the halogen doping ratio is increased, and the recycled water return channel is set up to improve the brine utilization rate.
On the basis of maintaining the water balance, increase the halogen doping ratio from 10%-20% to 30%, reduce production costs, improve economic benefits, reduce the amount of water replenishment of brine mines, and increase the utilization rate of brine.
Smart Images
Figure CN223150365U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of caustic soda production, and particularly relates to a caustic soda production device for increasing the brine mixing ratio. Background Technique
[0002] Caustic soda is a basic chemical raw material in the national economy and plays a crucial role in many fields. The electrolysis of saturated sodium chloride brine to produce caustic soda is a mature and widely used production technology. At present, the industry mostly adopts the brine mixing alkali-making mode of dissolving solid raw salt with brine. However, the procurement cost and transportation cost of raw salt have been increasing in recent years. Compared with solid raw salt, brine is cheap and has low usage cost. If the brine mixing ratio in the production process can be effectively increased, the production cost can be reduced, the production efficiency can be improved, and good economic benefits can be brought. Therefore, on the premise of maintaining the water balance of the production system, further increasing the brine mixing ratio is a difficult problem that needs to be solved urgently. Content of the Utility Model
[0003] The utility model provides a caustic soda production device for increasing the brine mixing ratio in view of the above problems existing in the prior art. The device is provided with a special brine transmission pipeline, a brine storage tank and a water pump related to brine transportation, and improves the connection relationship between different devices, effectively increasing the brine mixing ratio, saving costs and bringing good economic benefits. At the same time, a reclaimed water return channel is set up to improve the utilization rate of brine and effectively reduce the make-up water volume of the brine mine.
[0004] The technical solution for the utility model to solve the above technical problems is as follows: A caustic soda production device for increasing the brine mixing ratio, characterized in that it includes a brine transmission pipeline, a reclaimed water input pipeline and a water distribution bucket. The brine transmission pipeline is connected to the input port of a brine receiving pump. The output port of the brine receiving pump is connected to the inlet of the brine storage tank through a pipeline. The outlet of the brine storage tank is connected to the inlet of an ammonium removal reaction tank for brine through a pipeline. The outlet of the ammonium removal reaction tank for brine is connected to the input port of a brine delivery pump through a pipeline. The output port of the brine delivery pump is connected to the brine inlet of a water distribution tank through a pipeline. The reclaimed water input pipeline is connected to the water inlet of a reclaimed water storage tank. The water outlet of the reclaimed water storage tank is connected to the input port of a reclaimed water delivery pump through a pipeline. The output port of the reclaimed water input pump is connected to the reclaimed water inlet of the water distribution tank through a pipeline.
[0005] Preferably, the output port of the reclaimed water input pump is connected to a reclaimed water output pipeline.
[0006] Preferably, the ammonium removal reaction tank for brine is connected with an alkali addition pipeline and a sodium hypochlorite input pipeline. A sodium hypochlorite regulating valve is connected to the sodium hypochlorite input pipeline. A free chlorine on-line detector is arranged on the pipeline connected to the output port of the brine delivery pump.
[0007] Preferably, the outlet of the water distribution tank is connected to the inlet of the brine feeding pump of the brine dissolving tank through a pipeline, and the outlet of the brine feeding pump of the brine dissolving tank is connected to the brine dissolving tank through a pipeline.
[0008] The beneficial effects of the present invention are as follows: By setting up a brine transmission pipeline, it ensures the daily delivery of a sufficient amount of brine; by setting up a brine storage tank, it ensures sufficient brine storage space. After the brine enters the brine storage tank, it overflows to the brine ammonium removal reaction tank through the bottom pipeline. According to the production water consumption, the valve of the brine delivery pump is adjusted to control the amount of brine added. A reclaimed water storage tank is also set up to store a sufficient amount of reclaimed water, and an appropriate amount of reclaimed water is added according to the proportion of the added brine to achieve water balance. Special brine transmission pipelines, brine storage tanks, and water pumps related to brine delivery are set up, and the connection relationships between various devices are improved. On the basis of ensuring water balance, the brine blending ratio is increased. Moreover, a part of the reclaimed water generated by electrolyzing brine directly flows into the water distribution tank through a pipeline, and the excess part is transported back to the brine mine. This not only improves the utilization rate of brine but also effectively reduces the makeup water volume of the brine mine, improving production efficiency and economic benefits. The present invention changes the connection relationships between various devices, adjusts the addition amounts of brine and reclaimed water in real time, effectively increases the brine blending ratio on the basis of maintaining water balance, has a small equipment investment, a simple unit structure, can reduce production costs, and improve economic benefits. Description of the Drawings
[0009] Figure 1 is a schematic structural diagram of the present invention;
[0010] In the figure: 1. Brine transmission pipeline, 2. Brine receiving pump, 3. Brine storage tank, 4. Brine ammonium removal reaction tank, 5. Brine delivery pump, 6. Water distribution bucket, 7. Brine inlet, 8. Reclaimed water inlet, 9. Brine feeding pump of the brine dissolving tank, 10. Brine dissolving tank, 11. Reclaimed water input pipeline, 12. Reclaimed water storage tank, 13. Reclaimed water delivery pump, 14. Reclaimed water output pipeline, 15. Caustic soda addition pipeline, 16. Sodium hypochlorite input pipeline, 17. Sodium hypochlorite regulating valve, 18. Free chlorine on-line detector, 19. Brine mine. Specific Embodiments
[0011] The principles and features of the present invention will be described below. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.
[0012] As shown in the attached drawings, this embodiment provides a caustic soda production device for increasing the halogen doping ratio, including a brine transmission pipeline 1. The brine transmission pipeline 1 is connected to the input port of a brine receiving pump 2, and the output port of the brine receiving pump 2 is connected to the inlet of a brine storage tank 3 through a pipeline. During actual production, the brine loaded by a brine truck from a brine mine 19 is transmitted through the brine transmission pipeline 1 into the brine receiving pump 2, and the brine receiving pump 2 transports the brine through the pipeline to the brine storage tank 3. The brine storage tank 3 receives a large amount of brine every day and stores a sufficient amount of brine for actual production use.
[0013] The outlet of the brine storage tank 3 is connected to the inlet pipeline of an ammonium removal reaction tank 4 for brine. An alkali addition pipeline 15 is connected to the ammonium removal reaction tank 4 for brine. Sodium hydroxide is added to the brine through the alkali addition pipeline 15 to adjust the pH value to between 9.0 and 10.0. A sodium hypochlorite input pipeline 16 is also connected to the ammonium removal reaction tank 4 for brine. A sodium hypochlorite regulating valve 17 is connected to the sodium hypochlorite input pipeline 16. By opening the sodium hypochlorite regulating valve 17, sodium hypochlorite is added to the brine through the sodium hypochlorite input pipeline 16 to remove the impurity ammonium ions in the brine. The outlet pipeline of the ammonium removal reaction tank 4 for brine is connected to the input port of a brine delivery pump 5. The brine after ammonium removal in the ammonium removal reaction tank 4 for brine is transmitted by the brine delivery pump 5 to the next device. A free chlorine on-line detector 18 is provided on the pipeline connecting the output port of the brine delivery pump 5 to detect the free chlorine content in the brine.
[0014] The outlet of the brine transfer pump 5 is connected to the brine inlet 7 on the water distribution tank 6 through a pipeline. The brine after removing ammonium ions is sent to the brine inlet 7 through a pipeline, and then enters the water distribution tank 6 through the brine inlet 7. The water distribution tank 6 is also provided with a reclaimed water inlet 8 for receiving reclaimed water. The electrolyzed reclaimed water enters the reclaimed water storage tank 12 through the reclaimed water input pipeline 11. The reclaimed water stored in the reclaimed water storage tank 12 will enter the reclaimed water transfer pump 13 through a pipeline. Then, a part of the brine in the reclaimed water transfer pump 13 will be sent to the reclaimed water inlet 8 through a pipeline, and then enter the water distribution tank 6 through the reclaimed water inlet 8. To achieve water balance, the amount of water entering the water distribution tank is certain. While increasing the brine mixing ratio and the amount of brine used, the amount of reclaimed water input should be reduced. In actual production, the brine storage tank 3 stores sufficient brine, and the reclaimed water storage tank 12 is also equipped with a large amount of reclaimed water. The ratio of brine and reclaimed water added can be flexibly adjusted according to needs. On the premise of ensuring water balance, a large amount of brine is added to the water distribution tank 6, the brine mixing ratio is continuously increased, and then an appropriate amount of reclaimed water is added and the two are mixed. The mixed water source flows out from the outlet of the water distribution tank 6, flows through the pipeline to the inlet of the salt dissolving tank feed pump 9, and then flows into the salt dissolving tank 10 through the outlet of the salt dissolving tank feed pump 9. By setting up a dedicated brine transmission pipeline 1, a brine storage tank 3, and water pumps related to brine transfer, and improving the connection relationship between each device, the brine mixing ratio can be increased from the original 10%-20% to 30%, the content of raw salt added can be reduced, the production cost can be effectively reduced, and the economic benefit can be greatly improved.
[0015] In addition, since the amount of reclaimed water added needs to be adjusted according to the amount of brine added, there is often remaining reclaimed water. This part of the reclaimed water will be loaded into the brine truck through the reclaimed water output pipeline 14. The brine truck will return to the brine mine 19 loaded with reclaimed water. This improves the utilization rate of brine, effectively reduces the makeup water volume of the brine mine, and improves the economic benefit.
[0016] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A caustic soda production device for increasing the brine mixing ratio, characterized in that, It includes a brine transmission pipeline (1), a reclaimed water input pipeline (11) and a water distribution tank (6). The brine transmission pipeline (1) is connected to the input port of a brine receiving pump (2). The output port of the brine receiving pump (2) is connected to the inlet of a brine storage tank (3) through a pipeline. The outlet of the brine storage tank (3) is connected to the inlet of an ammonium-removing reaction tank for brine (4) through a pipeline. The outlet of the ammonium-removing reaction tank for brine (4) is connected to the input port of a brine delivery pump (5) through a pipeline. The output port of the brine delivery pump (5) is connected to the brine inlet (7) of the water distribution tank (6) through a pipeline. The reclaimed water input pipeline (11) is connected to the water inlet of a reclaimed water storage tank (12). The water outlet of the reclaimed water storage tank (12) is connected to the input port of a reclaimed water delivery pump (13) through a pipeline. The output port of the reclaimed water delivery pump (13) is connected to the reclaimed water inlet (8) of the water distribution tank (6) through a pipeline.
2. The caustic soda production device for increasing the halogen doping ratio according to claim 1, wherein, The output port of the reclaimed water delivery pump (13) is connected to a reclaimed water output pipeline (14).
3. A caustic soda production device for increasing the brine mixing ratio according to claim 1, wherein the ammonium-removing reaction tank for brine (4) is connected with an alkali addition pipeline (15) and a sodium hypochlorite input pipeline (16). A sodium hypochlorite regulating valve (17) is connected to the sodium hypochlorite input pipeline (16). A free chlorine on-line detector (18) is arranged on the pipeline connected to the output port of the brine delivery pump (5).
4. A caustic soda production device for increasing the brine mixing ratio according to claim 1, wherein the outlet of the water distribution tank (6) is connected to the input port of a salt dissolving tank feeding pump (9) through a pipeline. The output port of the salt dissolving tank feeding pump (9) is connected to a salt dissolving tank (10) through a pipeline.