A core, assembly, and method of making using a sub-ambitube forward osmosis membrane

Abstract

The application discloses a kind of core, assembly and method prepared by insufficient width forward osmosis membrane, utilize the effect of water-blocking part in core assembly to limit the flow of original liquid, force original liquid to carry out forward osmosis in the designed flow channel in forward osmosis membrane and intermediate tube, utilize the osmotic pressure difference of solution on both sides of membrane in the process of interpenetrating flow to carry out forward osmosis between multiple insufficient width forward osmosis membranes, form to realize the forward osmosis permeation method of conventional size core assembly.The application overcomes the difficulty of traditional forward osmosis assembly manufacturing, shape fixed problem, by using different flow channel design in core, fully utilize the permeation effect of forward osmosis membrane, realize the efficient operation of overall assembly.At the same time, the way of preparing assembly by multiple sections insufficient width forward osmosis membrane reduces production cost and improves the utilization rate of membrane.

Description

Technical Field

[0001] This invention relates to a water treatment core assembly, and more particularly to a core, assembly, and method for preparing a forward osmosis membrane with insufficient width. Background Technology

[0002] Forward osmosis is a process that uses osmotic pressure as the driving force to exchange solvents and isolate solutes between two liquids with different osmotic pressures. Therefore, in the application of osmotic membranes, as long as the performance of the forward osmosis membrane is sufficient, it can concentrate various solutions to achieve the purpose of separation and extraction.

[0003] In existing forward osmosis membrane production, due to limitations in production equipment, the width of the produced forward osmosis membranes is often insufficient for direct use in the production of forward osmosis membrane modules. As is well known, forward osmosis membrane modules operate under different conditions compared to reverse osmosis membrane modules, and there is more room for cutting and bonding of forward osmosis membrane modules. However, how to utilize forward osmosis membranes with insufficient width to prepare water treatment cores of various sizes has become a new challenge. Summary of the Invention

[0004] To address the shortcomings of the aforementioned technologies, this invention provides a core, component, and method for preparing a forward osmosis membrane with insufficient width.

[0005] To solve the above technical problems, the present invention adopts a core prepared using a forward osmosis membrane with insufficient width. It includes an intermediate tube with multiple reserved channels along the axial direction. Multiple forward osmosis membrane bags are rolled in parallel along the axial direction of the intermediate tube. Each forward osmosis membrane bag is connected to two adjacent reserved channels in the intermediate tube. The two adjacent reserved channels are blocked by a second water-blocking part in the intermediate tube. A first water-blocking part is provided in each forward osmosis membrane bag. The first water-blocking part blocks the flow channel for the original solution to flow back to the intermediate tube in the forward osmosis membrane bag.

[0006] Furthermore, the core assembly includes a core shell, with flanges installed at both ends of the core shell. The two ends of the intermediate tube each pass through a flange to form a raw liquid inlet and a raw liquid outlet. A draw liquid inlet is preset on the flange where the raw liquid inlet is located, and a draw liquid outlet is preset on the flange where the raw liquid outlet is located.

[0007] Furthermore, the second water-blocking section is transversely installed on the intermediate tube between the reserved channels of the two intermediate tubes inside the same forward osmosis membrane bag.

[0008] Furthermore, the first water-blocking section is not completely connected between the two membranes of the forward osmosis membrane bag to form a flow channel for the original solution to flow.

[0009] Furthermore, the second water-blocking section is completely blocked on the inner wall of the intermediate pipe.

[0010] Furthermore, adjacent forward osmosis membrane bags are connected by an intermediate tube.

[0011] Furthermore, a sealing ring is provided on the end edge of the forward osmosis membrane of the core near the flange. The sealing ring is placed on the flange and tightly connected to the outer shell of the core.

[0012] Furthermore, both the raw liquid inlet and the raw liquid outlet are equipped with threaded inner ports.

[0013] Furthermore, both the inlet and outlet of the extractant are provided with threaded internal ports.

[0014] A permeation method for a core module prepared using a forward osmosis membrane with insufficient width is disclosed. The method utilizes the water-blocking part in the core module to restrict the flow of the feed solution, forcing the feed solution to undergo forward osmosis by interleaving through the flow channels designed in the forward osmosis membrane and the intermediate tube. During the interleaving flow, the osmotic pressure difference of the solutions on both sides of the membrane is used to achieve forward osmosis between multiple forward osmosis membranes with insufficient width, thus forming a forward osmosis method for achieving a core module of conventional size.

[0015] This invention discloses a core, component, and method for preparing a forward osmosis membrane with insufficient width, which has the following advantages:

[0016] 1. It overcomes the difficulties of traditional forward osmosis modules being easy to manufacture and having a fixed shape, and provides a method that can utilize the permeation effect of the forward osmosis membrane bag without affecting the overall module operation by using different flow channel designs in a single core.

[0017] 2. At the same time, multiple segments of forward osmosis membranes with insufficient width can be connected to form multiple modules, which can reduce production costs, make full use of resources, and reduce waste. Compared with a single specification of forward osmosis membrane, using forward osmosis membranes of different sizes to prepare modules can maximize the utilization rate of membranes and reduce production costs.

[0018] 3. The provided permeation method utilizes the interpenetration and forward osmosis process in the flow channels designed in the forward osmosis membrane bag and intermediate tube. It is simple and easy to operate, and makes full use of resources. Attached Figure Description

[0019] Figure 1 This is a perspective view of the core component of the present invention.

[0020] Figure 2 This is a schematic diagram of the flow channel on the raw liquid side after the forward osmosis membrane has expanded.

[0021] Figure 3 This is a schematic diagram of the flow channel on the draw liquid side after the forward osmosis membrane has expanded.

[0022] Figure 4 This is a schematic diagram of the flow channels formed by the entire core.

[0023] In the diagram: 1. Intermediate pipe; 2. Intermediate pipe reserved hole; 3. No. 1 water blocking part; 4. No. 2 water blocking part; 5. Core shell; 6. Flange; 7. Raw liquid inlet; 8. Draw liquid inlet; 9. Draw liquid outlet; 10. Raw liquid outlet; 11. Sealing ring. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] This invention discloses a core prepared using a forward osmosis membrane with insufficient width, comprising as follows: Figure 4 As shown, it includes an intermediate tube 1, on which multiple intermediate tube reserved channels 2 are opened along the axial direction to facilitate the entry and exit of the raw liquid in the flow channel formed by the intermediate tube 1. Multiple forward osmosis membrane bags are rolled in parallel along the axial direction of the intermediate tube 1. Each forward osmosis membrane bag is connected to two adjacent intermediate tube reserved channels. Each forward osmosis membrane bag is made of two forward osmosis membranes with insufficient width bonded together. Specifically, the three sides of the two forward osmosis membranes that are aligned are bonded together to form an opening. The edge of the opening is bonded to the intermediate tube 1, and the opening covers two intermediate tube reserved channels 2. These two adjacent intermediate tube reserved channels are blocked by a second water-blocking part 4 inside the intermediate tube. Specifically, the second water-blocking part can be made of water-blocking material or made of the same material as the intermediate tube and integrally processed. The purpose is to completely block the inner wall of the intermediate tube.

[0026] Each forward osmosis membrane bag is provided with a first water-blocking part 3, which blocks the flow channel for the feed solution to flow back to the intermediate tube. In other embodiments, each forward osmosis membrane covers more than two (e.g., three) adjacent intermediate tube reserved channels 2, but blocks at least one intermediate tube reserved channel 2 for the feed solution to flow back to the intermediate tube 1. The purpose of this is to allow the feed solution to flow back to the intermediate tube 1. Adjacent forward osmosis membrane bags are connected by intermediate tubes, so as not to affect the operation of the overall module, and to realize the preparation of cores using forward osmosis membranes with insufficient width.

[0027] In this example, the No. 1 water-blocking part is not completely connected between the two membranes of the forward osmosis membrane bag to form a flow channel for the raw solution. In this example, the No. 1 water-blocking part can be formed by bonding between the two membranes of the forward osmosis membrane bag, but it is not limited to the above method. It can also be formed by pressing or sewing.

[0028] like Figure 2 and Figure 4As shown, the feed solution flow direction of this core assembly prepared using a forward osmosis membrane with insufficient width is as follows: The feed solution enters the core assembly from the inlet (feed solution inlet) of the intermediate tube and flows along the axial direction of the intermediate tube 1; the feed solution flows out through the reserved channel 2 of the intermediate tube. The flow between the same forward osmosis membrane is blocked by the second water-blocking part 4 and the first water-blocking part 3 between the two forward osmosis membranes, forming a flow channel for the feed solution. The feed solution flows into the intermediate tube through the reserved channel of the intermediate tube. After passing through the intermediate tube, the feed solution continues to flow out from the reserved channel of the intermediate tube under the next forward osmosis membrane. The above steps are repeated until the feed solution flows out from the outlet (feed solution outlet) of the intermediate tube, completing the forward osmosis process.

[0029] Meanwhile, the present invention also discloses a core assembly prepared from the above-mentioned core, such as... Figure 1 As shown, the core assembly includes a core shell 5, with flanges 6 installed at both ends of the core shell 5. The two ends of the intermediate tube 1 each pass through a flange 6, forming a raw liquid inlet 7 and a raw liquid outlet 10. A draw liquid inlet 8 is pre-installed on the flange 6 where the raw liquid inlet 7 is located, and a draw liquid outlet 9 is pre-installed on the flange 6 where the raw liquid outlet 10 is located. A sealing ring 11 is provided on the end edge of the forward osmosis membrane of the core near the flange. The sealing ring 11 is fitted onto the flange 6 and tightly connected to the core shell 5. Both the raw liquid inlet 7 and the raw liquid outlet 10 have threaded internal openings, as do the draw liquid inlet 8 and the draw liquid outlet 9.

[0030] This invention also discloses a permeation method for a core assembly prepared using a forward osmosis membrane with insufficient width. The method utilizes a water-blocking section in the core assembly to restrict the flow of the feed solution, forcing the feed solution to interweave with the flow channels designed in the forward osmosis membrane and intermediate tube. Figure 3 The draw solution on the draw solution side of the forward osmosis membrane, after the membrane is unfolded, undergoes forward osmosis. During the interleaved flow, the osmotic pressure difference of the solutions on both sides of the membrane is used to carry out forward osmosis between multiple forward osmosis membranes with insufficient width, forming a forward osmosis method to realize conventional-sized core components.

[0031] In summary, this invention overcomes the difficulty of traditional forward osmosis membrane components, which are made directly using standardized forward osmosis membranes for ease of manufacturing, resulting in a relatively fixed shape. It allows for the effective use of the forward osmosis membrane's permeation effect within a single core by employing different flow channel designs without affecting the overall component's operation. Of course, it also utilizes multiple segments of forward osmosis components with insufficient width, connecting them together to form multiple sections.

[0032] The above embodiments are not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present invention are also within the protection scope of the present invention.

Claims

1. A core prepared using a forward osmosis membrane with insufficient width, comprising an intermediate tube (1) having a plurality of intermediate tube pre-reserved channels (2) axially formed on the intermediate tube (1), characterized in that: Multiple forward osmosis membrane bags are rolled in parallel along the axial direction of the intermediate tube (1). Each forward osmosis membrane bag is connected to two adjacent reserved channels (2) in the intermediate tube. The two adjacent reserved channels (2) in the intermediate tube (1) are blocked by the second water-blocking part (4). A first water-blocking part (3) is provided in each forward osmosis membrane bag. The first water-blocking part (3) blocks the flow channel for the original solution to flow back to the intermediate tube (1) in the forward osmosis membrane bag. The permeation method for core modules prepared using forward osmosis membranes with insufficient width utilizes the water-blocking part in the core module to restrict the flow of the feed solution, forcing the feed solution to undergo forward osmosis by interleaving through the flow channels designed in the forward osmosis membrane and intermediate tube. During the interleaving flow, the osmotic pressure difference of the solutions on both sides of the membrane is used to achieve forward osmosis between multiple forward osmosis membranes with insufficient width, forming a forward osmosis permeation method to achieve core modules of conventional size.

2. A core assembly prepared according to the core as described in claim 1, characterized in that: The core assembly includes a core shell (5), with flanges (6) installed at both ends of the core shell (5). The two ends of the intermediate tube (1) each pass through a flange (6) to form a raw liquid inlet (7) and a raw liquid outlet (10). A suction liquid inlet (8) is preset on the flange (6) where the raw liquid inlet (7) is located, and a suction liquid outlet (9) is preset on the flange (6) where the raw liquid outlet (10) is located.

3. The core assembly prepared according to claim 2, characterized in that: The second water-blocking part (4) is transversely installed on the intermediate tube (1) between the two intermediate tube reserved holes (2) inside the same forward osmosis membrane bag.

4. The core assembly prepared according to claim 3, characterized in that: The first water-blocking part (3) is not completely connected between the two membranes of the forward osmosis membrane bag to form a flow channel for the original solution.

5. The core assembly prepared according to claim 2, characterized in that: The second water-blocking part (4) is completely blocked on the inner wall of the intermediate pipe (1).

6. The core assembly prepared according to the core according to claim 5, characterized in that: The two adjacent forward osmosis membrane bags are connected by an intermediate tube (1).

7. The core assembly prepared according to claim 2, characterized in that: A sealing ring (11) is provided on the end edge of the forward osmosis membrane of the core near the flange. The sealing ring (11) is fitted on the flange (6) and tightly connected to the outer shell (5) of the core.

8. The core assembly prepared according to any one of claims 2-7, characterized in that: Both the raw liquid inlet (7) and the raw liquid outlet (10) are provided with threaded inner openings.

9. A core assembly prepared according to any one of claims 2-7, characterized in that: Both the inlet (8) and outlet (9) of the extractant are provided with threaded inner openings.

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