System for removing oxygen in aqueous solution

Abstract

The utility model relates to a system for removing oxygen in aqueous solution, which comprises a component frame and a plurality of groups of flat hydrophobic membrane components, the component frame comprises a front clamping plate, a rear clamping plate, an upper pipeline and a lower pipeline, and the front clamping plate and the rear clamping plate are respectively arranged at the front end and the rear end between the upper pipeline and the lower pipeline. The front clamping plate and the rear clamping plate are arranged on the outer sides of the flat hydrophobic membrane assemblies and provided with an aqueous solution outlet and an aqueous solution inlet respectively, the aqueous solution inlet is connected with a liquid pump through a pipeline, and the upper pipeline and the lower pipeline are connected with a vacuum pump respectively. A raw material aqueous solution enters from the aqueous solution inlet, passes through the flat hydrophobic membrane assembly, the upper pipeline and the lower pipeline and then flows out from the aqueous solution outlet; according to the utility model, the flat hydrophobic membrane assemblies are combined with vacuum to remove oxygen in an aqueous solution, so that the aqueous solution flows in a staggered manner among the membrane assemblies, the retention time is prolonged, and the deoxidation effect is improved.

Description

[Technical field]

[0001] The utility model relates to the technical field of aqueous solution deoxygenation, in particular to a system for removing oxygen from aqueous solution. [Background Technology]

[0002] Deoxygenated water is primarily used as boiler feed water to prevent oxygen corrosion. Common deoxygenation methods include thermal deoxygenation, vacuum deoxygenation, and chemical deoxygenation. Thermal deoxygenation consumes a large amount of heat energy and often requires a certain amount of cooling before use. Chemical deoxygenation consumes a certain amount of chemical reagents and is prone to secondary pollution. Vacuum deoxygenation is an effective deoxygenation method and is also the most widely used deoxygenation technology.

[0003] Currently, commonly used deoxygenation membrane equipment is complex to manufacture and is expensive. my country's battery separator production capacity is large and experiencing overcapacity. Furthermore, polyolefin battery separators offer the advantages of high porosity and low cost. After hydrophobic treatment, they can be used for deoxygenation of aqueous solutions. [Utility Model Content]

[0004] The purpose of this utility model is to solve the above-mentioned shortcomings and provide a system for removing oxygen from aqueous solution. The system removes oxygen from aqueous solution through flat hydrophobic membrane components combined with vacuum, so that the aqueous solution flows alternately between the membrane components, increasing the residence time and improving the deoxygenation effect. The system has a simple structure and is easy to operate.

[0005] In order to achieve the above-mentioned purpose, a system for removing oxygen from an aqueous solution is designed, comprising a component frame 3 and a flat hydrophobic membrane component 1, wherein the component frame 3 comprises a front plywood 4, a rear plywood 5, an upper pipeline 6 and a lower pipeline 7, wherein the front plywood 4 and the rear plywood 5 are respectively arranged at the front and rear ends between the upper pipeline 6 and the lower pipeline 7, and the flat hydrophobic membrane component 1 is provided with multiple groups, each group of flat hydrophobic membrane components 1 is staggeredly connected with the upper pipeline 6 and the lower pipeline 7, and is sealed by an O-ring, the front plywood 4 and the rear plywood 5 are both arranged on the outside of the flat hydrophobic membrane component 1, the front plywood 4 is provided with an aqueous solution outlet 10, the rear plywood 5 is provided with an aqueous solution inlet 9, the aqueous solution inlet 9 is connected to a liquid pump 8 through a pipeline, the upper pipeline 6 and the lower pipeline 7 are respectively connected to a vacuum pump 11, and the raw aqueous solution input from the liquid pump 8 enters through the aqueous solution inlet 9, passes through the flat hydrophobic membrane component 1, the upper pipeline 6 and the lower pipeline 7, and flows out from the aqueous solution outlet 10.

[0006] Furthermore, the flat hydrophobic membrane assembly 1 includes two membranes 12 welded together and a support plate 13 sandwiched between the two membranes 12 . The flat hydrophobic membrane assembly 1 is connected and fixed to the upper pipe 6 and the lower pipe 7 via a protruding pipe 14 on the support plate 13 .

[0007] Furthermore, the membrane 12 of the flat hydrophobic membrane assembly 1 is a hydrophobically modified polyolefin battery separator, which has the advantages of high porosity and low cost, and thus has a better deoxygenation effect when applied to aqueous solutions after being hydrophobically treated.

[0008] Furthermore, a guide net 2 is provided, which is distributed between two adjacent groups of flat hydrophobic membrane assemblies 1, separating the two groups of flat hydrophobic membrane assemblies 1 and providing a channel for water flow. After the raw aqueous solution enters from the aqueous solution inlet 9, it flows back and forth on the guide net 2 between the flat hydrophobic membrane assemblies 1 and finally flows out from the aqueous solution outlet 10.

[0009] Furthermore, the upper pipeline 6 and the lower pipeline 7 of the assembly frame 3 are connected to the connecting holes of the support plate of each group of flat hydrophobic membrane assemblies 1 .

[0010] Furthermore, the pipelines between the air inlet of the vacuum pump 11 and the outlets of the upper pipeline 6 and the lower pipeline 7 are arranged at an angle. The inclined design helps to quickly improve the deoxygenation performance and ensure more stable removal of oxygen from the aqueous solution.

[0011] Furthermore, a vacuum meter is arranged on the main line of the air inlet of the vacuum pump 11, and a flow control switch is arranged at the working fluid inlet of the vacuum pump 11. The vacuum meter and the flow control switch are electrically connected to the vacuum controller through the processor respectively, and the vacuum controller is used to control the vacuum negative pressure to be constant.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] (1) The utility model removes oxygen from the aqueous solution by combining a flat hydrophobic membrane assembly with a vacuum. The aqueous solution flows in a staggered manner in the flow channels between the membrane modules, which increases the residence time and improves the deoxygenation effect.

[0014] (2) The utility model removes oxygen from the aqueous solution under vacuum conditions through a flat hydrophobic membrane, which can effectively reduce energy consumption and improve efficiency;

[0015] (3) The utility model adopts a modified polyolefin battery separator, which has low cost, simple structure, and easy operation, meets production needs, and is worthy of promotion and application. [Brief Description of the Drawings]

[0016] Figure 1 It is a structural diagram of the utility model;

[0017] Figure 2 This is a side structural diagram of the flat hydrophobic membrane assembly of the utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the flat hydrophobic membrane assembly of the utility model;

[0019] Figure 4 This is a schematic diagram of the control circuit of the vacuum pump of the utility model;

[0020] In the figure: 1, flat hydrophobic membrane assembly 2, guide net 3, assembly frame 4, front splint 5, rear splint 6, upper pipeline 7, lower pipeline 8, liquid pump 9, aqueous solution inlet 10, aqueous solution outlet 11, vacuum pump 12, membrane 13, support plate 14, protrusion tube. [Specific implementation method]

[0021] As attached Figure 1 To the attached Figure 3 As shown, the utility model provides a system for removing oxygen from an aqueous solution, comprising a component frame 3 and a flat hydrophobic membrane component 1, the component frame 3 comprising a front plywood 4, a rear plywood 5, an upper pipeline 6 and a lower pipeline 7, the front plywood 4 and the rear plywood 5 are respectively arranged at the front and rear ends between the upper pipeline 6 and the lower pipeline 7, the flat hydrophobic membrane component 1 is provided with multiple groups, each group of flat hydrophobic membrane components 1 is staggeredly connected to the upper pipeline 6 and the lower pipeline 7, and is sealed by an O-ring, the front plywood 4 and the rear plywood 5 are both arranged on the outside of the flat hydrophobic membrane component 1, an aqueous solution outlet 10 is provided on the front plywood 4, and an aqueous solution inlet 9 is provided on the rear plywood 5, the aqueous solution inlet 9 is connected to a liquid pump 8 through a pipeline, the upper pipeline 6 and the lower pipeline 7 are respectively connected to a vacuum pump 11, the raw aqueous solution input from the liquid pump 8 enters from the aqueous solution inlet 9, passes through the flat hydrophobic membrane component 1, the upper pipeline 6 and the lower pipeline 7, and flows out from the aqueous solution outlet 10.

[0022] Among them, the flat-plate hydrophobic membrane assembly 1 includes two membranes 12 welded together and a support plate 13 sandwiched between the two membranes 12. The flat-plate hydrophobic membrane assembly 1 is connected and fixed to the upper pipe 6 and the lower pipe 7 through the protruding pipe 14 on the support plate 13; the membrane 12 of the flat-plate hydrophobic membrane assembly 1 is a hydrophobically modified polyolefin battery separator. Due to its advantages of high porosity and low cost, it has a better deoxygenation effect when applied to aqueous solutions after hydrophobic treatment.

[0023] A guide net 2 is also provided, which is distributed between two adjacent groups of flat hydrophobic membrane assemblies 1 to separate the two groups of flat hydrophobic membrane assemblies 1 and provide a channel for water flow. After the raw aqueous solution enters from the aqueous solution inlet 9, it flows back and forth on the guide net 2 between the flat hydrophobic membrane assemblies 1 and finally flows out from the aqueous solution outlet 10.

[0024] In the present invention, the pipes between the air inlet of the vacuum pump 11 and the outlets of the upper pipe 6 and the lower pipe 7 are arranged at an angle. The inclined design helps to quickly improve the deoxygenation performance and ensure more stable removal of oxygen from the aqueous solution. Figure 4As shown, a vacuum gauge is arranged on the main line of the vacuum pump 11 air inlet, and a flow control switch is arranged on the working fluid inlet of the vacuum pump 11. The vacuum gauge and the flow control switch are electrically connected to the vacuum controller through the processor respectively. The vacuum controller is used to control the vacuum negative pressure to be constant.

[0025] The present invention will be further described below with reference to the accompanying drawings and the embodiments shown in the drawings:

[0026] A system for removing oxygen from an aqueous solution mainly comprises a flat hydrophobic membrane assembly, a flow guide net and an assembly frame; the flat hydrophobic membrane assembly is a hydrophobically modified polyolefin battery separator welded together, with two membranes welded together and a support plate sandwiched between them to form a group of diaphragms, which are connected and fixed to the upper and lower pipes on the assembly frame through protruding tubes on the support plate; the flow guide net is distributed between the two groups of diaphragms, separating the two groups of diaphragms and providing a channel for water flow; each group of diaphragms is staggeredly connected to the upper and lower pipes; the assembly frame is provided with front and rear splints, which are provided with an inlet and outlet for the aqueous solution, and the splints press the diaphragms and the flow guide net to fix them to the assembly frame; the upper and lower pipes of the assembly frame are connected to the connection holes of the support plate of each group of diaphragms.

[0027] The working principle of the utility model is as follows: the raw water solution enters the membrane module through the liquid pump, flows back and forth on the guide net between the diaphragms, and finally flows out from the outlet; during this period, the upper and lower pipes of the component frame are connected to the vacuum pump and maintain a vacuum state; under the vacuum state, the oxygen in the aqueous solution passes through the diaphragm, passes through the support plate between the diaphragms, and enters the upper and lower pipes of the component frame, thereby achieving the effect of oxygen removal.

[0028] As a further embodiment, the membrane is a hydrophobically modified polyolefin battery separator. Each group of membranes is alternately connected to upper and lower pipes. The hydrophobically modified polyolefin battery separator is a hydrophobic membrane obtained by immersion coating with a fluorine-containing compound or treating a commercial polyolefin battery separator with a fluorine-containing gas plasma.

[0029] As a further embodiment, the support plates in a set of membranes are connected to the upper and lower pipes of the assembly frame and sealed by O-rings. The raw water solution is one or a mixture of reverse osmosis water, desalted water after electrodialysis, desalted water after adsorption, and distilled water.

[0030] The contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field. The standard parts used can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connections adopt conventional connection methods in the existing technology, which will not be described in detail here.

[0031] The present invention is not limited to the above-mentioned embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A system for removing oxygen from an aqueous solution, characterized in that: The invention comprises a component frame (3) and a flat hydrophobic membrane component (1), wherein the component frame (3) comprises a front plywood (4), a rear plywood (5), an upper pipeline (6) and a lower pipeline (7), wherein the front plywood (4) and the rear plywood (5) are respectively arranged at the front and rear ends between the upper pipeline (6) and the lower pipeline (7), wherein the flat hydrophobic membrane component (1) is provided with a plurality of groups, wherein each group of flat hydrophobic membrane components (1) is staggeredly connected to the upper pipeline (6) and the lower pipeline (7) and is sealed by an O-ring, wherein the front plywood (4) and the rear plywood (5) are both provided with On the outside of the flat hydrophobic membrane assembly (1), the front clamping plate (4) is provided with an aqueous solution outlet (10), and the rear clamping plate (5) is provided with an aqueous solution inlet (9). The aqueous solution inlet (9) is connected to a liquid pump (8) through a pipeline, and the upper pipeline (6) and the lower pipeline (7) are respectively connected to a vacuum pump (11). The raw aqueous solution input from the liquid pump (8) enters through the aqueous solution inlet (9), passes through the flat hydrophobic membrane assembly (1), the upper pipeline (6) and the lower pipeline (7), and then flows out from the aqueous solution outlet (10).

2. The system for removing oxygen from an aqueous solution according to claim 1, wherein: The flat hydrophobic membrane assembly (1) comprises two membranes (12) welded together and a support plate (13) sandwiched between the two membranes (12); the flat hydrophobic membrane assembly (1) is connected and fixed to an upper pipeline (6) and a lower pipeline (7) via a protruding pipeline (14) on the support plate (13).

3. The system for removing oxygen from an aqueous solution according to claim 2, wherein: The membrane (12) of the flat hydrophobic membrane assembly (1) is a hydrophobically modified polyolefin battery separator.

4. The system for removing oxygen from an aqueous solution according to claim 1, 2 or 3, wherein: A flow guide net (2) is also provided. The flow guide net (2) is distributed between two adjacent groups of flat hydrophobic membrane assemblies (1), separates the two groups of flat hydrophobic membrane assemblies (1), and provides a water flow channel. After the raw aqueous solution enters through the aqueous solution inlet (9), it flows back and forth on the flow guide net (2) between the flat hydrophobic membrane assemblies (1) and finally flows out through the aqueous solution outlet (10).

5. The system for removing oxygen from an aqueous solution according to claim 1, wherein: The upper pipeline (6) and the lower pipeline (7) of the component frame (3) are connected to the supporting plate connection holes of each group of flat hydrophobic membrane components (1).

6. The system for removing oxygen from an aqueous solution according to claim 1, wherein: The pipelines between the air inlet of the vacuum pump (11) and the outlets of the upper pipeline (6) and the lower pipeline (7) are arranged at an angle.

7. The system for removing oxygen from an aqueous solution according to claim 1, wherein: A vacuum meter is arranged on the main pipe of the air inlet of the vacuum pump (11), and a flow control switch is arranged on the working fluid inlet of the vacuum pump (11). The vacuum meter and the flow control switch are electrically connected to the vacuum controller through a processor respectively, and the vacuum controller is used to control the vacuum negative pressure to be constant.

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