Membrane concentration device capable of continuously operating and switching cleaning

Abstract

The utility model relates to the technical field of realizing material concentration by utilizing a membrane separation technology, and provides a membrane concentration device capable of continuously operating and switching cleaning, which comprises a raw material tank, three membrane concentration components, a penetrating fluid tank, a concentrated liquid tank and a cleaning tank, an automatic valve VIII is arranged between two adjacent feed ports; the feeding hole is also communicated with the raw material tank and the cleaning tank through an automatic valve I and an automatic valve II; a pressure sensor is arranged between the feeding hole and the automatic valve I; the penetrating fluid outlet is communicated with a penetrating fluid tank through an automatic valve III; and the concentrated solution outlet is communicated with the concentrated solution tank through an automatic valve IV. According to the technical scheme, the problem that the production schedule is delayed due to the fact that the membrane concentration device needs to be shut down during cleaning in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of realizing material concentration by utilizing membrane separation technology, and specifically relates to a membrane concentration device capable of continuous operation, switching and cleaning. Background Art

[0002] In the field of material concentration, membrane separation technology is often used alone or in combination with other treatment methods to ensure low energy consumption, high recovery, and high returns for the raw liquid. The membrane's selective permeability makes it uniquely suitable for material concentration. It not only effectively removes impurities and improves product quality, but also saves energy, reduces consumption, and maintains stable operation. In actual application, the raw liquid entering the membrane system has high organic matter content, large molecular particle size, and a large amount of suspended solids, and the water quality is inferior to that of the water treatment inlet. This can easily cause fouling and scaling of the membrane system, requiring frequent cleaning. The poorer the raw liquid quality and the higher the concentration, the shorter the cleaning frequency and the longer the cleaning time. The system also needs to be shut down for maintenance after a certain period of operation. To ensure continuous and uninterrupted system operation, two or more systems are usually designed for operation and cleaning separately. This not only increases the system footprint, but also makes maintenance difficult and increases investment costs. Considering the storage of materials in the system and pipelines during operation and cleaning, material consumption and operating expenses are significantly increased, indirectly reducing corporate profits. Utility Model Content

[0003] The utility model provides a membrane concentration device with continuous operation and switching for cleaning, which solves the problem in the related art that the membrane concentration device needs to be shut down for cleaning, thereby delaying production progress.

[0004] The technical solution of the utility model is as follows:

[0005] A membrane concentration device for continuous operation and switching cleaning comprises a raw material tank, three membrane concentration components, a permeate tank, a concentrate tank, and a cleaning tank. The membrane concentration component has a feed port, a permeate outlet, and a concentrate outlet. An automatic valve eight is located between two adjacent feed ports. The feed port is also connected to the raw material tank and the cleaning tank via automatic valves one and two. A pressure sensor is located between the feed port and the automatic valve one. The permeate outlet is connected to the permeate tank via automatic valve three. The concentrate outlet is connected to the concentrate tank via automatic valve four.

[0006] Optionally, the permeate outlet is also connected to the cleaning tank through the automatic valve five.

[0007] Optionally, the concentrated liquid outlet is also connected to the feed port through automatic valve six and circulation pump one; the concentrated liquid outlet is also connected to the cleaning tank through automatic valve seven.

[0008] Optionally, the permeate outlet is connected to the raw material tank through the automatic valve 9, so as to return unqualified permeate to the raw material tank.

[0009] Optionally, there is an automatic valve ten between the automatic valve four and the concentrated liquid tank; and there is an automatic valve eleven between the automatic valve ten and the automatic valve four, which is used to return unqualified concentrated liquid to the raw material tank.

[0010] Optionally, the solvent water is connected to the cleaning tank through an automatic valve thirteen; the reaction liquid one and the reaction liquid two are connected to the cleaning tank through an automatic valve twelve.

[0011] Optionally, the raw material tank is connected to the automatic valve 1 and the automatic valve 8 through a booster pump, a first heat exchanger, a safety filter and a high-pressure pump in sequence.

[0012] Optionally, the cleaning tank is connected to the automatic valve 2 through a cleaning pump and a cleaning filter.

[0013] Optionally, a second heat exchanger is provided between the automatic valve 10 and the concentrated liquid tank for heat exchange between the concentrated liquid and the raw liquid.

[0014] Optionally, a PLC control unit is also included.

[0015] The working principle and beneficial effects of the utility model are as follows:

[0016] In the present invention, a raw material tank stores a raw material liquid to be processed. Three membrane concentration assemblies are used to perform membrane concentration treatment on the raw material liquid, and each membrane concentration assembly has a feed port, a permeate outlet, and a concentrate outlet. The raw material liquid flows out of the raw material tank and enters the feed port of the membrane concentration assembly after passing through automatic valve 1. An automatic valve 8 is provided between two adjacent feed ports to control the on-off of the feed of adjacent membrane concentration assemblies. A pressure sensor between the feed port and automatic valve 1 can monitor pressure changes in real time to ensure stable operation of the system. In the membrane concentration assembly, a portion of the raw material liquid forms a permeate after membrane filtration, and the permeate flows into the permeate tank through automatic valve 3 for storage. The other portion forms a concentrate, and the concentrate flows into the concentrate tank through automatic valve 4.

[0017] The advantage is that through multiple membrane concentration modules and reasonable valve settings, the device can be operated continuously without frequent shutdowns, thereby improving production efficiency. When the membrane concentration module needs to be cleaned, it can be switched to the cleaning tank through automatic valves 1 and 2, allowing the cleaning fluid to enter the membrane concentration module for cleaning, ensuring the filtration performance and service life of the membrane module. The setting of the pressure sensor can monitor the feed pressure in real time, facilitating timely adjustment of system operating parameters to ensure stable system operation. The membrane concentration module can effectively separate the raw liquid into permeate and concentrate, which are stored in the permeate tank and concentrate tank respectively to meet different subsequent processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The preferred implementation scheme will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0019] Figure 1 This is a schematic diagram of the structure of the utility model.

[0020] In the figure: 1. Raw material tank, 2. Booster pump, 3. First heat exchanger, 4. Safety filter, 5. High-pressure pump, 6. Automatic valve one, 7. Circulation pump one, 8. Membrane concentration component, 9. Automatic valve three, 10. Automatic valve four, 11. Automatic valve six, 12. Automatic valve eight, 13. Permeate tank, 14. Automatic valve nine, 15. Automatic valve ten, 16. Automatic valve eleven, 17. Second heat exchanger, 18. Concentrate tank, 19. Automatic valve twelve, 20. Automatic valve thirteen, 21. Cleaning tank, 22. Cleaning pump, 23. Cleaning filter, 24. Automatic valve two, 25. Automatic valve five, 26. Automatic valve seven. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without inventive work.

[0022] To simplify the drawings, only the parts relevant to the utility model are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically shown or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0023] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0024] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] Reference Figure 1 , which is the first embodiment of the utility model, proposes a membrane concentration device with continuous operation and switching cleaning, including a raw material tank 1, three membrane concentration components 8, a permeate tank 13, a concentrate tank 18, and a cleaning tank 21. The membrane concentration component has a feed port, a permeate outlet, and a concentrate outlet. An automatic valve 8 12 is present between two adjacent feed ports; the feed port is also connected to the raw material tank 1 and the cleaning tank 21 through an automatic valve 1 6 and an automatic valve 2 24, and a pressure sensor is present between the feed port and the automatic valve 1 6; the permeate outlet is connected to the permeate tank 13 through an automatic valve 3 9; and the concentrate outlet is connected to the concentrate tank 18 through an automatic valve 4 10.

[0026] In this embodiment, the raw material tank 1 stores a raw material liquid to be processed. Three membrane concentration modules 8 are used to perform membrane concentration treatment on the raw material liquid. Each membrane concentration module 8 has a feed port, a permeate outlet, and a concentrate outlet. The raw material liquid flows out of the raw material tank 1, passes through an automatic valve 6, and enters the feed port of the membrane concentration module 8. An automatic valve 8 12 is provided between the feed ports of two adjacent membrane concentration modules 8 to control the on / off of the feed to the adjacent membrane concentration modules 8. A pressure sensor between the feed port of the membrane concentration module 8 and the automatic valve 6 can monitor pressure changes in real time to ensure stable system operation. In the membrane concentration module 8, a portion of the raw material liquid forms a permeate after membrane filtration. The permeate flows through the automatic valve 3 9 into the permeate tank 13 for storage. The other portion forms a concentrate, which flows through the automatic valve 4 10 into the concentrate tank 18.

[0027] The advantage is that through multiple membrane concentration components 8 and reasonable valve settings, the continuous operation of the device can be achieved without frequent shutdowns, thereby improving production efficiency. When the membrane concentration component 8 needs to be cleaned, it can be switched to the cleaning tank 21 through automatic valve 1 6 and automatic valve 2 24, so that the cleaning liquid enters the membrane concentration component 8 for cleaning, thereby ensuring the filtration performance and service life of the membrane component. The setting of the pressure sensor can monitor the feed pressure in real time, facilitate timely adjustment of the system operating parameters, and ensure stable operation of the system. The membrane concentration component 8 can effectively separate the raw liquid into permeate and concentrate, which are stored in the permeate tank 13 and the concentrate tank 18 respectively to meet different subsequent processing requirements.

[0028] Furthermore, the permeate outlet is also connected to the cleaning tank 21 through the automatic valve 5 25.

[0029] Furthermore, the concentrate outlet is also connected to the feed port through an automatic valve six 11 and a circulation pump one 7; the concentrate outlet is also connected to the cleaning tank 21 through an automatic valve seven 26.

[0030] Furthermore, the permeate outlet is connected to the raw material tank 1 through the automatic valve 9 14, so as to return the unqualified permeate to the raw material tank 1.

[0031] Furthermore, an automatic valve ten 15 is provided between the automatic valve four 10 and the concentrated liquid tank 18; an automatic valve eleven 16 is provided between the automatic valve ten 15 and the automatic valve four 10, for returning unqualified concentrated liquid to the raw material tank 1.

[0032] Furthermore, the solvent water is connected to the cleaning tank 21 through the automatic valve 13 20 ; the reaction liquid 1 and the reaction liquid 2 are connected to the cleaning tank 21 through the automatic valve 12 19 .

[0033] Furthermore, the raw material tank 1 is connected to the automatic valve 1 6 and the automatic valve 8 12 through the booster pump 2, the first heat exchanger 3, the safety filter 4 and the high-pressure pump 5 in sequence.

[0034] Furthermore, the cleaning tank 21 is connected to the automatic valve 2 24 through the cleaning pump 22 and the cleaning filter 23 .

[0035] Furthermore, a second heat exchanger 17 is provided between the automatic valve 15 and the concentrated liquid tank 18 for heat exchange between the concentrated liquid and the raw liquid.

[0036] Furthermore, it also includes a PLC control unit.

[0037] During operation of this embodiment, to achieve energy recycling, the high-temperature feedstock liquid is primarily cooled using a membrane system concentrate. The cooled feedstock liquid then enters feed tank 1 for homogenization and equalization. The discharge port of feed tank 1 is connected to the inlet of booster pump 2. The discharge port of booster pump 2 is connected to the inlet of heat exchanger 3. After secondary cooling in heat exchanger 3 via a cold source, the discharge port is connected to the inlet of safety filter 4. After protective filtration, the discharge port of safety filter 4 is connected to the inlet of high-pressure pump 5. The discharge port of high-pressure pump 5 is connected to automatic valves 1 and 8 (12). These valves are opened, allowing the feedstock liquid to enter circulation pump 7, whose outlet is connected to membrane concentration assembly 8. After being processed by the membrane concentration component 8, permeate and concentrate are generated respectively. The automatic valve three 9, automatic valve four 10, and automatic valve six 11 are opened. The permeate generated by the membrane component is collected into the raw material permeate tank 13 through the pipeline where the automatic valve three 9 is located. At this time, the automatic valve nine 14 is closed. The automatic valve nine 14 is opened, and the unqualified permeate is returned to the raw material tank 1 through the pipeline where the automatic valve nine 14 is located. A part of the concentrate generated by the membrane concentration component 8 is circulated to the inlet of the circulation pump 7 through the pipeline where the automatic valve six 11 is located. The remaining concentrate is connected to the second heat exchanger 17 through the pipeline where the automatic valve four 10 and the automatic valve ten 15 are located. The automatic valve ten 15 is opened, and the raw material liquid exchanges heat with the concentrate in the second heat exchanger 17. The discharge of the second heat exchanger 17 is connected to the concentrate tank 18. At this time, the automatic valve eleven 16 is closed. The automatic valve eleven 16 is opened, and the unqualified concentrate is returned to the raw material tank 1 through the pipeline where the automatic valve eleven 16 is located.

[0038] During cleaning in this embodiment, reaction liquid 1 and reaction liquid 2 are connected to cleaning tank 21 via automatic valve 12 19, while solvent water is connected to cleaning tank 21 via automatic valve 13 20. After the reaction liquid and solvent water are evenly mixed in cleaning tank 21, the effluent is connected to the inlet of cleaning pump 22, the outlet of cleaning pump 22 being connected to the inlet of cleaning filter 23. Automatic valve 2 for cleaning water inlet 24 is opened, and the cleaning liquid, after protective filtration by safety filter 23, is connected to circulation pump 7 via the pipeline containing automatic valve 24. The outlet of circulation pump 7 is connected to membrane concentration module 8. After passing through membrane concentration module 8, cleaning product water and cleaning concentrate are generated, respectively. Automatic valves 1 6, 3, 9, and 4 10 are closed, while automatic valves 5 25 and 7 26 are opened. The cleaning product water flows back to cleaning tank 21 through the pipeline containing automatic valve 5 25 for recycling. Automatic valve 6 11 is opened, and a portion of the cleaning concentrate is circulated to the inlets of each circulation pump 7 via the pipeline containing automatic valve 6 11. The remaining cleaning concentrate flows back to the cleaning tank via the pipeline containing automatic valve 7 26.

[0039] In this embodiment, when continuous operation is switched to cleaning, while one group of membrane concentrating assemblies 8 is being cleaned and the other groups of membrane concentrating assemblies 8 are operating, automatic valve 8 12 is opened, automatic valve 1 6 , automatic valve 3 9 , and automatic valve 4 10 of the membrane concentrating assemblies 8 being cleaned are closed, and automatic valve 2 24 , automatic valve 5 25 , and automatic valve 7 26 are opened. Automatic valve 1 6 , automatic valve 3 9 , and automatic valve 4 10 of the other membrane concentrating assemblies 8 are opened, and automatic valve 2 24 , automatic valve 5 25 , and automatic valve 7 26 are closed. This allows the membrane concentrating assemblies 8 to be cleaned and operated simultaneously. Similarly, after cleaning of one group of membrane concentrating assemblies 8 is completed, the operation state is restored by switching the opening and closing of automatic valve 1 6 , automatic valve 3 9 , automatic valve 4 10 , and automatic valve 2 24 , automatic valve 5 25 , and automatic valve 7 26 , and the cleaning state of the next group is started. Similarly, the cleaning and operating states of each group are adjusted according to actual conditions to ensure continuous operation of the system.

[0040] The utility model utilizes PLC for logic control, and automatically switches valve groups to place each group of membrane concentration components 8 in an independent state. The concentrated liquid is tested to judge the performance of each group of membrane concentration components 8 to determine the cleaning cycle. When a group of membrane concentration components 8 needs to be cleaned, the PLC control system adjusts the opening and closing states of the above-mentioned valves to realize automatic switching of the cleaning operation of each section.

[0041] This embodiment includes the following two operations:

[0042] Operation 1: When the membrane concentration assembly 8 operates normally, the PLC controls automatic valve 1 6, automatic valve 3 9, automatic valve 4 10, and automatic valve 10 15 to be in the open state, and automatic valve 11 16, automatic valve 2 24, automatic valve 5 25, and automatic valve 7 26 to be in the closed state. The concentrate produced by the membrane concentration assembly 8 is collected into the concentrate tank 18 through the pipeline where the automatic valve 4 10 and the automatic valve 10 15 are located.

[0043] Operation 2: When the membrane concentration assembly 8 is cleaned, the PLC controls automatic valve 1 6, automatic valve 3 9, and automatic valve 4 10 to be closed, and automatic valve 2 24, automatic valve 5 25, and automatic valve 7 26 to be open. The cleaning water flows back to the cleaning tank 21 through the pipeline where the automatic valve 5 25 is located, and the cleaning concentrated water flows back to the cleaning tank 21 through the automatic valve 7 26.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A membrane concentration device with continuous operation and switching cleaning, characterized in that: The invention comprises a raw material tank (1), three membrane concentration modules (8), a permeate tank (13), a concentrate tank (18), and a cleaning tank (21); the membrane concentration module (8) has a feed port, a permeate outlet, and a concentrate outlet; an automatic valve 8 (12) is provided between two adjacent feed ports; The feed port is also connected to the raw material tank (1) and the cleaning tank (21) through automatic valve 1 (6) and automatic valve 2 (24), and a pressure sensor is provided between the feed port and the automatic valve 1 (6); the permeate outlet is connected to the permeate tank (13) through automatic valve 3 (9); and the concentrate outlet is connected to the concentrate tank (18) through automatic valve 4 (10).

2. A membrane concentration device for continuous operation switching and cleaning according to claim 1, characterized in that: The permeate outlet is also connected to the cleaning tank (21) through an automatic valve five (25).

3. The membrane concentration device for continuous operation and switching cleaning according to claim 1, characterized in that: The concentrate outlet is also connected to the feed port via automatic valve six (11) and circulation pump one (7); The concentrate outlet is also connected to the cleaning tank (21) via an automatic valve seven (26).

4. The membrane concentration device for continuous operation switching and cleaning according to claim 1, characterized in that: The permeate outlet is connected to the raw material tank (1) through an automatic valve nine (14) for returning unqualified permeate to the raw material tank (1).

5. The membrane concentration device for continuous operation switching and cleaning according to claim 1, characterized in that: An automatic valve ten (15) is provided between the automatic valve four (10) and the concentrate tank (18); An automatic valve eleven (16) is provided between the automatic valve ten (15) and the automatic valve four (10), for returning unqualified concentrated liquid to the raw material tank (1).

6. The membrane concentration device for continuous operation switching and cleaning according to claim 1, characterized in that: The solvent water is connected to the cleaning tank (21) through the automatic valve 13 (20); Reaction liquid 1 and reaction liquid 2 are connected to the cleaning tank (21) through automatic valve 12 (19).

7. The membrane concentration device for continuous operation switching and cleaning according to claim 1, characterized in that: The raw material tank (1) is connected to the automatic valve 1 (6) and the automatic valve 8 (12) in sequence through the booster pump (2), the first heat exchanger (3), the safety filter (4) and the high-pressure pump (5).

8. The membrane concentration device for continuous operation switching and cleaning according to claim 1, characterized in that: The cleaning tank (21) is connected to the second automatic valve (24) via a cleaning pump (22) and a cleaning filter (23).

9. The membrane concentration device for continuous operation switching and cleaning according to claim 5, characterized in that: A second heat exchanger (17) is also provided between the automatic valve 10 (15) and the concentrated liquid tank (18) for heat exchange between the concentrated liquid and the raw liquid.

10. The membrane concentration device for continuous operation switching and cleaning according to claim 1, characterized in that: Also includes a PLC control unit.

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