Automatic filter element hydrolysis system
The automatic filter cartridge hydrolysis system utilizes a COD detector and controller to automatically control the wastewater treatment path, achieving the purification and recycling of filter cartridge cleaning wastewater. This solves the problem of high wastewater treatment pressure in the polyester plant and reduces wastewater treatment costs and labor costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU SHENGHONG FIBER CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-10
AI Technical Summary
The wastewater volume after filter cleaning in the polyester plant is large, and the wastewater treatment plant's treatment capacity is close to saturation, making it unable to effectively treat the filter cleaning wastewater, which leads to increased wastewater treatment pressure and costs.
Design an automatic filter cartridge hydrolysis system, including a hydrolysis furnace, a spray tower, a steam heater, a sedimentation tank, a COD detector, a waste liquid purification tank, and a controller. The system automatically controls the treatment path of the waste liquid through COD detection, thereby achieving the purification and recycling of the waste liquid and reducing the amount of waste liquid entering the sewage treatment system.
It effectively reduces the discharge of filter cleaning wastewater by 80%, alleviates the pressure on the sewage treatment system, reduces sewage treatment and water costs, achieves automated control, reduces manual operation, and ensures COD balance.
Smart Images
Figure CN224100232U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to an automatic filter core hydrolysis system. BACKGROUND
[0002] In polyester device production, filter core cleaning discharge wastewater is the main waste source of device, and the wastewater after filter core cleaning is directly discharged into a sewage pool and is transported to a sewage treatment station through a sewage pump, due to the improvement of device capacity and the continuous change of product varieties, the switching period of the melt filter of each device is shorter and shorter, the filter core cleaning workload is continuously increased, the wastewater production is also larger and larger, and the sewage treatment capacity of the sewage treatment station is close to saturation. CONTENT OF THE UTILITY MODEL
[0003] The utility model discloses an automatic filter core hydrolysis system.
[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that:
[0005] An automatic filter core hydrolysis system, comprising a hydrolysis furnace, a spray tower, a steam heater, a production water conveying pipeline, the hydrolysis furnace is communicated with the steam heater, the spray tower is communicated with the hydrolysis furnace, the production water conveying pipeline is communicated with the spray tower and is used for conveying production water to the spray tower, the system further comprises a sedimentation tank, a COD detector, a waste liquid purification tank, a three-way electromagnetic valve, a circulating pipeline and a controller, the sedimentation tank is communicated with the outlet of the spray tower, the input end of the COD detector is arranged in the sedimentation tank, and the COD detector is used for detecting the COD of liquid in the sedimentation tank;The three-way electromagnetic valve has three output ends, and the three output ends are communicated with the sedimentation tank, the waste liquid purification tank and a sewage treatment system respectively;The waste liquid purification tank is provided with a liquid level meter;The outlet of the waste liquid purification tank is communicated with the production water conveying pipeline through the circulating pipeline;The controller is connected with the three-way electromagnetic valve, the COD detector and the liquid level meter.
[0006] According to some embodiments of the utility model, when the COD value detected by the COD detector is less than a set value, the sedimentation tank is communicated with the waste liquid purification tank, and when the COD value detected by the COD detector is greater than a set value, the sedimentation tank is communicated with the sewage treatment system.
[0007] According to some embodiments of this utility model, the waste liquid purification tank includes a tank body and a partition plate. The partition plate is disposed in the tank body to divide the tank body into a first cavity and a second cavity. The partition plate extends vertically, and its lower end is connected to the bottom wall of the tank body. A gap is maintained between the upper end of the partition plate and the top wall of the tank body, so that the first cavity and the second cavity are in communication. The first cavity is connected to one output end of the three-way solenoid valve through a pipeline, and the outlet of the second cavity is connected to the circulation pipeline through a pipeline.
[0008] According to some embodiments of this utility model, a first filter screen is provided in the gap between the upper end of the partition plate and the top wall of the tank body, and the first filter screen extends in the vertical direction.
[0009] According to some embodiments of this utility model, a residue collection tank is provided in the first cavity.
[0010] According to some embodiments of this utility model, a material discharge member is provided on the upper side of the residue collection trough, the material discharge member is connected to the residue collection trough, and the material discharge member is wider at the top and narrower at the bottom.
[0011] According to some embodiments of this utility model, the system further includes a scraper demister and a foam collection tank. The scraper demister is disposed above the sedimentation tank, and the foam collection tank is disposed below the demister. The outlet of the foam collection tank is connected to the wastewater treatment system.
[0012] According to some embodiments of this utility model, a guide component is provided between the scraper demister and the foam collecting tank. The guide component includes a first guide section and a second guide section. The first guide section is located below the scraper demister and is used to receive the foam scraped by the scraper demister. The second guide section is disposed on the foam collecting tank and communicates with the foam collecting tank. The lower end of the first guide section communicates with the upper end of the second guide section.
[0013] According to some embodiments of this utility model, a second filter screen is provided in the foam collection tank; and / or, a filter is provided in the circulation pipeline.
[0014] According to some embodiments of the present invention, the system further includes a time relay, which is connected to the controller.
[0015] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0016] The automatic filter core hydrolysis system provided by the utility model can effectively reduce the discharge of 80% of filter core cleaning wastewater, reduce the sewage treatment pressure of a sewage treatment system, reduce the sewage treatment cost, reduce the water cost of the system, realize automatic water control, ensure the balance of COD, cancel the original manual adjustment operation, effectively reduce the filter core cleaning cost and the labor cost, realize automatic control, and do not need personnel on duty and manual adjustment. BRIEF DESCRIPTION OF DRAWINGS
[0017] BRIEF DESCRIPTION OF DRAWINGS Figure 1 The utility model provides a structure diagram of automatic filter core hydrolysis system.
[0018] BRIEF DESCRIPTION OF DRAWINGS Figure 2 The utility model provides a structure diagram of automatic filter core hydrolysis system.
[0019] BRIEF DESCRIPTION OF DRAWINGS Figure 3 The utility model provides a structure diagram of automatic filter core hydrolysis system. Figure 2 The utility model provides a structure diagram of automatic filter core hydrolysis system.
[0020] BRIEF DESCRIPTION OF DRAWINGS Figure 4 The utility model provides a structure diagram of automatic filter core hydrolysis system. Figure 2 The utility model provides a structure diagram of automatic filter core hydrolysis system.
[0021] BRIEF DESCRIPTION OF DRAWINGS Figure 5 The utility model provides a structure diagram of automatic filter core hydrolysis system. Figure 2 The utility model provides a structure diagram of automatic filter core hydrolysis system.
[0022] In the above drawings:
[0023] 1-production water regulating valve;2-spraying tower;3-baohuan ring filler;4-hydrolysis furnace;5-steam heater;6-steam regulating valve;7-liquid seal tank;8-residue collection groove;9-first cavity, 10-second cavity;11-liquid level meter;12-filter;13-centrifugal pump;14-control cabinet;15-time relay;16-scraping plate demulsifier;17-three-way electromagnetic valve;18-COD detector;19-sedimentation tank;20-foam collection groove;21-first filter screen;22-second filter screen;23-first material guide part;24-second material guide part;25-production water delivery pipeline;26-circulation pipeline;27-sewage treatment system;28-valve;29-separation plate;30-falling material part. DETAILED DESCRIPTION
[0024] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, and obviously, the described embodiments are a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range of protection of the utility model.
[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0026] See Figures 1 to 5 The provided automatic filter cartridge hydrolysis system includes a hydrolysis furnace 4, a spray tower 2, a steam heater 5, and a production water delivery pipeline 25. The hydrolysis furnace 4 and the steam heater 5 are connected by a pipeline, and the steam source and the steam heater 5 are connected by a steam delivery pipeline. A steam regulating valve 6 is installed on the steam delivery pipeline. The spray tower 2 and the hydrolysis furnace 4 are connected by a pipeline, and the production water delivery pipeline 25 is connected to the spray tower 2. The production water delivery pipeline 25 is used to deliver production water (spray water) to the spray tower 2, and the production water source delivers production water to the production water delivery pipeline 25. A production water regulating valve 1 is installed on the production water delivery pipeline 25 to control the on / off state of the production water delivery pipeline 25.
[0027] The system also includes a sedimentation tank 19, a COD detector 18, a waste liquid purification tank, a three-way solenoid valve 17, a circulation pipeline 26, and a controller. The sedimentation tank 19 is connected to the outlet of the spray tower 2 via a pipeline. The input end of the COD detector 18 is located inside the sedimentation tank 19, and the COD detector 18 is used to detect the COD of the liquid in the sedimentation tank 19. The three-way solenoid valve 17 has three output ends, which are respectively connected to the outlet of the sedimentation tank 19, the inlet of the waste liquid purification tank, and the wastewater treatment system 27. The three output ends are respectively the inlet end (… Figure 3 (as indicated by a), the first exit point ( Figure 3 (as indicated by b) and the second exit ( Figure 3 (as indicated by c) The inlet of the three-way solenoid valve 17 is connected to the outlet of the sedimentation tank 19 via a pipeline, the first outlet is connected to the waste liquid purification tank via a pipeline, and the second outlet is connected to the sewage treatment system 27 via a pipeline; a level gauge 11 is installed inside the waste liquid purification tank; the outlet of the waste liquid purification tank is connected to the production water conveying pipeline 25 via a circulation pipeline 26; the controller is connected to the three-way solenoid valve 17, the COD detector 18, and the level gauge 11. The controller is used to receive the detection signal from the COD detector 18 and control the inlet of the three-way solenoid valve 17 to connect to the first outlet or control the inlet to connect to the second outlet according to the received detection signal.
[0028] In this example, when the COD value detected by the COD detector 18 is less than a set value, the inlet of the three-way electromagnetic valve 17 is in communication with the first outlet, the sediment tank 19 is in communication with the waste liquid purification tank, the second outlet is closed, the waste liquid in the sediment tank 19 is transported to the waste liquid purification tank, and the waste liquid in the sediment tank 19 is not transported to the sewage treatment system 27; when the COD value detected by the COD detector 18 is greater than a set value, the inlet of the three-way electromagnetic valve 17 is in communication with the second outlet, the sediment tank 19 is in communication with the sewage treatment system 27, and the first outlet is closed, that is, the waste liquid in the sediment tank 19 is transported to the sewage treatment system 27, and the waste liquid in the sediment tank 19 is not transported to the waste liquid purification tank. The advantage of this arrangement is that the waste liquid can be treated in the waste liquid purification tank and then flow into the spray tower 2 through the production water delivery pipeline 25 to achieve recycling, without the need for all waste liquid to enter the sewage treatment system 27, thereby reducing the work of the sewage treatment system 27 and achieving recycling.
[0029] In some embodiments, the waste liquid purification tank comprises a tank body, a partition plate 29 arranged in the tank body to divide the tank body into a first cavity 9 and a second cavity 10, the partition plate 29 extending in the vertical direction, the lower end of the partition plate 29 being connected to the bottom wall of the tank body, and a gap being maintained between the upper end of the partition plate 29 and the inner top wall of the tank body, so that the first cavity 9 and the second cavity 10 are through. The first cavity 9 is in communication with an output end (first outlet) of the three-way electromagnetic valve 17, and the outlet of the second cavity 10 is in communication with the circulation pipeline 26. The waste liquid first enters the first cavity 9, the impurities in the waste liquid are precipitated in the first cavity 9, and the clean water overflows from the upper part of the first cavity 9 to the second cavity 10 and then flows into the circulation pipeline 26. The waste liquid purification tank can purify and treat the waste liquid, achieving recycling of clean water. The waste liquid purification tank is divided into the first cavity 9 and the second cavity 10 by the partition plate 29, so the structure is compact and the space occupied is small.
[0030] Further, a first filter screen 21 is arranged at the gap between the upper end of the partition plate 29 and the inner top wall of the tank body, the first filter screen 21 extending in the vertical direction, the upper end of the first filter screen 21 being connected to the inner top wall of the tank body, and the lower end of the first filter screen 21 being connected to the upper end of the partition plate 29. The first filter screen 21 is arranged to intercept the impurities in the clean water flowing out of the first cavity 9, so that the clean water entering the second cavity 10 is cleaner.
[0031] In some embodiments, referring to Figures 1-2 , a residue collection tank 8 is arranged in the first cavity 9, the impurities entering the first cavity 9 are left in the residue collection tank 8, and the impurities are taken out when the amount of impurities collected in the residue collection tank 8 reaches a certain amount.
[0032] In some embodiments, the residue collection tank 8 is provided with a falling piece 30, which is in communication with the residue collection tank 8 and is located in the first cavity 9. The falling piece 30 is tapered, such as conical, so as to facilitate the flow of waste liquid into the residue collection tank 8. The falling piece 30 is in communication with the residue collection tank 8 through a pipeline, and a valve 28 is arranged on the pipeline. The valve 28 is used to control the opening and closing of the pipeline. When the residue in the residue collection tank 8 is to be removed, the valve 28 can be closed.
[0033] In this example, the system further comprises a scraper 16 and a foam collection tank 20. The scraper 16 is arranged at the upper portion of the sedimentation tank 19, and the foam collection tank 20 is arranged below the scraper 16. The outlet of the foam collection tank 20 is in communication with a sewage treatment system 27. A controller is connected to the scraper 16. The scraper 16 can effectively transport the foam at the top of the sedimentation tank 19 to the foam collection tank 20 through the scraper.
[0034] In some embodiments, a guide piece is arranged between the scraper 16 and the foam collection tank 20. The guide piece comprises a first guide part 23 and a second guide part 24. The first guide part 23 is arranged below the scraper 16 to receive the foam scraped from the scraper 16. The second guide part 24 is arranged below the first guide part 23 and is arranged on and in communication with the foam collection tank 20. The lower end of the first guide part 23 is in communication with the upper end of the second guide part 24. The guide piece facilitates the transportation of the foam in the sedimentation tank 19 to the foam collection tank 20 and prevents the overflow of the foam into the factory building.
[0035] Referring to Figure 5 The first guide part 23 is inclined from top to bottom towards the second guide part 24. The second guide part 24 comprises a first section, a second section and a third section which are in communication with each other in sequence. The first section is close to the lower end of the first guide part 23, and the diameter of the first section is consistent. The diameter of the second section gradually decreases from top to bottom, and the diameter of the third section is consistent.
[0036] In some embodiments, a second filter 22 is arranged in the foam collection tank 20. The second filter 22 is horizontally arranged at the bottom of the foam collection tank 20 and is used to intercept impurities in the foam. The foam collection tank 20 comprises a rotating door. The opening of the door facilitates the cleaning of impurities in the foam collection tank 20.
[0037] In this example, a filter 12 and a centrifugal pump 13 are arranged on the circulation pipeline 26. The centrifugal pump 13 is connected to the controller. The filter 12 is arranged to further filter the clean water flowing out of the second cavity 10. The centrifugal pump 13 is arranged to facilitate the transportation of the clean water flowing out of the second cavity 10 to the production water pipeline 25.
[0038] In this example, the controller is connected with the steam heater 5, the production water regulating valve 1, the centrifugal pump 13, and the steam regulating valve 6.
[0039] In some embodiments, the system further comprises a time relay 15 connected with the controller, the time relay 15 is configured to close the scraper demister 16, the hydrolysis furnace 4, and the steam heater 5 after timing reaches a preset length. The controller is arranged in the control cabinet 14.
[0040] In this example, the system comprises a liquid seal tank 7, the inlet of the liquid seal tank 7 is communicated with the steam delivery pipeline through a connecting pipeline, and the outlet of the liquid seal tank 7 is communicated with the sediment tank 19. When steam is delivered to the hydrolysis furnace 4, if the steam contains condensed water or the steam heater 5 has residual condensed water, the condensed water is delivered to the liquid seal tank 7 through the connecting pipeline, and at the same time, due to the U-shaped section of the connecting pipeline, water is left in the U-shaped section, which can prevent steam from entering the liquid seal tank 7.
[0041] The embodiment of the automatic filter core hydrolysis system in this example is as follows:
[0042] The melt filter core is installed in the high-temperature hydrolysis furnace, the steam heated by the steam heater has a temperature of 310-330℃, the steam enters the hydrolysis furnace through the pipeline, which can effectively degrade the melt and residual impurities attached to the surface of the filter core, and after the steam completes hydrolysis in the hydrolysis furnace, it enters the spray tower through the pipeline for cooling. The DN25 spiral nozzle at the top of the spray tower can effectively cool the steam with impurities after hydrolysis to the condensation point. The waste water and steam condensate after spray cooling are mixed and discharged from the spray tower outlet to the sediment tank.
[0043] Next, when the COD detector detects that the COD value is less than 600 mg / L, the three-way electromagnetic valve 17 switches, the sediment tank is communicated with the first cavity of the waste liquid purification tank, and the waste liquid purification tank stores the clear water through sediment overflow. When the liquid level of the waste liquid purification tank reaches the highest liquid level, the liquid level meter transmits a signal to the controller, and the controller automatically starts the centrifugal pump 13 and closes the production water regulating valve after receiving the liquid level signal, and starts the waste water circulation. When the COD detector detects that the COD value is greater than 2000 mg / L, the three-way electromagnetic valve 17 switches to directly deliver the waste water in the sediment tank to the sewage treatment system (when the COD value is between 600-2000 mg / L, the sediment tank is communicated with the first cavity of the waste liquid purification tank, and the waste liquid enters the waste liquid purification tank). When the liquid level meter detects that the liquid level reaches the lowest point, the production water regulating valve is opened, and the centrifugal pump stops running, and the production water source delivers production water to the production water delivery pipeline. At the same time, the time relay starts timing, and after 5 minutes, the controller receives a feedback signal, and the scraper demister stops running. After 20 minutes, the high-temperature hydrolysis furnace and the steam heater stop heating, the production water regulating valve is closed, and the system is completely shut down.
[0044] The automatic filter element hydrolysis system has the advantages that the system is safe and reliable, 80% of the discharge of filter element cleaning wastewater can be effectively reduced, the sewage treatment pressure of the sewage treatment system is reduced, the sewage treatment cost is reduced, the water cost of the system is reduced, water quantity automatic control is realized, COD balance is ensured, original manual adjustment operation is cancelled, filter element cleaning cost and manual cost are effectively reduced, automatic control is realized, personnel on duty is not needed, and manual adjustment is not needed; the problem that polyester filter element cleaning sewage is large and the sewage cannot be disposed is solved.
[0045] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made according to the spirit and essence of the present application shall be covered within the protection scope of the present application.
Claims
1. An automatic filter cartridge hydrolysis system, comprising a hydrolysis furnace, a spray tower, a steam heater, a production water delivery pipeline, the hydrolysis furnace being in communication with the steam heater, the spray tower being in communication with the hydrolysis furnace, and the production water delivery pipeline being in communication with the spray tower for delivering production water to the spray tower, characterized in that the system further comprises a sedimentation tank, a COD detector, a waste liquid purification tank, a three-way electromagnetic valve, a circulation pipeline, and a controller, the sedimentation tank being in communication with an outlet of the spray tower, an input end of the COD detector being arranged in the sedimentation tank, the COD detector being used for detecting the COD of liquid in the sedimentation tank, the three-way electromagnetic valve having three output ends, the three output ends being in communication with the sedimentation tank, the waste liquid purification tank, and a sewage treatment system respectively, a liquid level meter being arranged in the waste liquid purification tank, the waste liquid purification tank being in communication with the production water delivery pipeline through the circulation pipeline, and the controller being connected with the three-way electromagnetic valve, the COD detector, and the liquid level meter. When the COD value detected by the COD detector is less than a set value, the sedimentation tank is in communication with the waste liquid purification tank; when the COD value detected by the COD detector is greater than a set value, the sedimentation tank is in communication with the sewage treatment system.
2. The automatic filter cartridge hydrolysis system of claim 1, wherein, The waste liquid purification tank comprises a tank body and a partition plate, the partition plate being arranged in the tank body to divide the tank body into a first cavity and a second cavity, the partition plate extending in a vertical direction, a lower end of the partition plate being connected with a bottom wall of the tank body, and a gap being maintained between an upper end of the partition plate and an inner top wall of the tank body, so that the first cavity and the second cavity are through.
3. The automatic filter cartridge hydrolysis system of claim 1, wherein, A first filter screen is arranged at the gap between the upper end of the partition plate and the inner top wall of the tank body.
4. The automatic filter cartridge hydrolysis system of claim 3, wherein, A residue collection tank is arranged in the first cavity.
5. The automatic filter cartridge hydrolysis system of claim 3, wherein, An upper side of the residue collection tank is provided with a material falling piece, the material falling piece being in communication with the residue collection tank, and the material falling piece being in a shape of wide at the upper side and narrow at the lower side.
6. The automatic filter cartridge hydrolysis system of claim 5, wherein, The system further comprises a scraper demister and a foam collection tank, the scraper demister being arranged at an upper portion of the sedimentation tank, the foam collection tank being arranged below the scraper demister, and an outlet of the foam collection tank being in communication with the sewage treatment system.
7. The automatic filter cartridge hydrolysis system of claim 1, wherein, A material guiding piece is arranged between the scraper demister and the foam collection tank, the material guiding piece comprising a first material guiding part and a second material guiding part, the first material guiding part being located below the scraper demister for receiving the foam scraped by the scraper demister, the second material guiding part being arranged on the foam collection tank and being in communication with the foam collection tank, and a lower end of the first material guiding part being in communication with an upper end of the second material guiding part.
8. The automatic filter cartridge hydrolysis system of claim 7, wherein, A second filter screen is arranged in the foam collection tank, and / or a filter is arranged on the circulation pipeline.
9. The automatic filter cartridge hydrolysis system of claim 7, wherein, 10. The automatic filter cartridge hydrolysis system according to any one of claims 1 to 9, characterized in that, The system also includes a time relay connected to the controller.