Membrane method deoxidation filter

Abstract

The utility model provides a membrane method deoxidation filter which comprises a body, a membrane method deoxidation filter core, a membrane method deoxidation filter core and a membrane method deoxidation filter core, the circulation pipe penetrates through the containing cavity, the circulation pipe is provided with a liquid inlet and a liquid outlet which are oppositely arranged, and a plurality of through holes are formed in the side wall of the circulation pipe and distributed at intervals in the extending direction of the circulation pipe; the filtering module is arranged in the containing cavity, the filtering module surrounds the periphery of the circulating pipe in the extending direction of the circulating pipe, the filtering cavity is provided with a gas channel, the gas channel communicates with the containing cavity, and the filtering module can filter oxygen in the fluid and enables the oxygen to flow into the containing cavity through the gas channel; the blocking part is arranged on the circulating pipe, the blocking part can separate the circulating pipe, and through holes are formed in the positions, on the two sides of the blocking part, of the circulating pipe. According to the technical scheme provided by the utility model, the problem that the boiler feed water deoxygenization effect is poor in the prior art can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the development technical field of oxygen removal equipment, and particularly relates to a membrane method deoxidization filter. BACKGROUND

[0002] Coal industry methanol production process often involves drum boiler, and the boiler is equipped with a spin film deaerator. The boiler feed water is desalted water provided by a desalted water system, and after thermal deoxygenation by the deaerator, the desalted water is supplied to the boiler for use. However, the existing boiler deaerator system is unstable in operation, and the working temperature and pressure do not meet the requirements, which affects the deoxygenation effect. Due to the poor deoxygenation effect of the deaerator, the dissolved oxygen content in the boiler feed water is greater than 60 μg / l for a long time, which leads to excessive oxygen content in the boiler feed water. Oxidized iron, a corrosive substance in the boiler feed water, will enter the boiler to form iron scale, and the corroded iron scale will cause point pits on the inner wall of the pipe, increase the resistance coefficient, and even cause corrosion penetration accidents, affecting the safe operation of the boiler. SUMMARY

[0003] The utility model provides a kind of membrane method deoxidization filter to solve the problem of poor deoxygenation effect of boiler feed water in prior art.

[0004] The utility model provides a kind of membrane method deoxidization filter, membrane method deoxidization filter includes: the body, the body has accommodating cavity;Flow pipe, it is set through accommodating cavity, flow pipe has relatively set liquid inlet and liquid outlet, and liquid inlet and liquid outlet are all located at the outside of body, and liquid inlet is located at one end of body, and liquid outlet is located at the other end of body, and a plurality of through holes are provided on the side wall of flow pipe, and a plurality of through holes are spaced apart along the extension direction of flow pipe;Filter module, it is set in accommodating cavity, and filter module is peripherally arranged along the extension direction of flow pipe in the outer periphery of flow pipe, and filter module has filter cavity, and through hole is all located in filter cavity, and filter cavity can prevent fluid in filter cavity from flowing to the outside, and filter cavity has gas passage, and gas passage is communicated with accommodating cavity, and filter module can filter oxygen in fluid, and make oxygen flow into accommodating cavity through gas passage;Barrier portion, it is set on flow pipe, and barrier portion is located in filter cavity, and barrier portion can separate flow pipe, and through hole is all set on the flow pipe of the two sides of barrier portion.

[0005] Further, the barrier portion includes a barrier plate, the outer diameter of the barrier plate is greater than the size of the flow pipe, and the filter module is arranged on the barrier plate.

[0006] Further, the barrier portion separates the flow pipe into a first section and a second section, the diameter of the through holes of the first section gradually decreases in the direction close to the barrier portion, and the diameter of the through holes of the second section gradually increases in the direction away from the barrier portion.

[0007] Further, the through holes of the first section and the second section are symmetrically distributed along the barrier portion.

[0008] Further, the filter module comprises a plurality of hollow fiber membrane filaments, the plurality of hollow fiber membrane filaments are arranged along the extension direction of the flow pipe, and the plurality of hollow fiber membrane filaments are uniformly distributed on the outer periphery of the flow pipe, a gas passage is formed between the plurality of hollow fiber membrane filaments, and the middle part of the plurality of hollow fiber membrane filaments is filled with glue to form a filter cavity, and the two ends of the gas passage along the extension direction of the flow pipe are respectively communicated with the containing cavity.

[0009] Further, one end of the body close to the liquid inlet is provided with a gas blowing port, and the other end of the body close to the liquid outlet is provided with a gas exhaust port, and the gas blowing port is used for blowing inert gas into the gas passage.

[0010] Further, the gas blowing port and the gas exhaust port are arranged on the side wall of the body.

[0011] Further, the barrier part comprises a plurality of barrier plates, and the plurality of barrier plates are distributed at intervals along the extension direction of the flow pipe.

[0012] Further, the membrane deoxidization filter further comprises a vacuum pump, and the vacuum pump is communicated with the gas exhaust port.

[0013] Further, the membrane deoxidization filter further comprises a filter core, and the filter core is arranged in the liquid inlet and the liquid outlet.

[0014] By applying the technical scheme of the present application, the boiler feed water enters the filter cavity through the liquid inlet on the flow pipe, because the side wall of the flow pipe has a plurality of through holes on the filter cavity, the boiler feed water in the flow pipe can flow out to the filter cavity, so that the boiler feed water can fully contact with the filter module, the filter module can filter the oxygen in the boiler feed water, and the oxygen can flow to the containing cavity through the gas passage, and the deoxygenated boiler feed water flows out from the liquid outlet of the flow pipe. The barrier part can change the flow direction of the boiler feed water in the filter cavity, so that the boiler feed water can contact with the filter module multiple times, thereby realizing sufficient removal of oxygen in the boiler feed water. The filter module is arranged around the outer periphery of the flow pipe along the extension direction of the flow pipe, so that the filter module can filter as much oxygen as possible in the boiler feed water, thereby improving the deoxygenation effect of the boiler feed water. BRIEF DESCRIPTION OF DRAWINGS

[0015] The drawings accompanying the specification of the present application serve to provide a further understanding of the present application, and the schematic embodiments of the present application and the description thereof serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0016] Figure 1 A structure schematic view of a membrane deoxidization filter according to an embodiment of the present application is shown;

[0017] Figure 2 A structure schematic view of a baffle plate and a through hole according to an embodiment of the present application is shown.

[0018] Wherein, the above-mentioned drawings include the following reference signs:

[0019] 10, body;

[0020] 11, accommodating cavity;

[0021] 12, air blowing port;

[0022] 13, air exhaust port;

[0023] 20, flow pipe;

[0024] 21, through hole;

[0025] 22, first section;

[0026] 23, second section;

[0027] 24, liquid inlet;

[0028] 25, liquid outlet;

[0029] 30, filter module;

[0030] 31, hollow fiber membrane filament;

[0031] 32, filter cavity;

[0032] 40, blocking part;

[0033] 41, blocking plate;

[0034] 50, filter core. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation on the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0036] As Figure 1The utility model discloses a membrane deoxidization filter, the membrane deoxidization filter includes: the body 10, the flow pipe 20, the filter module 30 and the barrier 40. Wherein, the body 10 has the accommodation cavity 11, the flow pipe 20 is set through the accommodation cavity 11, and the flow pipe 20 has the opposite setting liquid inlet 24 and liquid outlet 25, and the liquid inlet 24 and liquid outlet 25 are all located the outside of the body 10, and the liquid inlet 24 is located one end of the body 10, and the liquid outlet 25 is located the other end of the body 10, and a plurality of through holes 21 are arranged on the lateral wall of the flow pipe 20, and the plurality of through holes 21 are spaced distribution along the extension direction of the flow pipe 20, the filter module 30 is set in the accommodation cavity 11, and the filter module 30 is along the extension direction of the flow pipe 20 and is surrounded in the outer periphery of the flow pipe 20, and the filter module 30 has the filter cavity 32, and the through hole 21 is all located in the filter cavity 32, and the filter cavity 32 can prevent the fluid in the filter cavity 32 from flowing to the outside, and the filter cavity 32 has the gas passage, and the gas passage is communicated with the accommodation cavity 11, and the filter module 30 can filter the oxygen in the fluid, and make the oxygen flow to the accommodation cavity 11 through the gas passage, and the barrier 40 is set on the flow pipe 20, and the barrier 40 is located in the filter cavity, and the barrier 40 can separate the flow pipe 20, and the through hole 21 is arranged on the flow pipe 20 on the both sides of the barrier 40.

[0037] The utility model discloses a technical scheme, the boiler feed water passes through the liquid inlet 24 on the flow pipe 20 and enters the filter cavity 32, because the lateral wall of the flow pipe 20 has a plurality of through holes 21 in the filter cavity 32, can make the boiler feed water in the flow pipe 20 flow to the filter cavity 32, to make the boiler feed water and the filter module 30 fully contact, and the filter module 30 can fully filter the oxygen in the boiler feed water, and make the oxygen flow to the accommodation cavity 11 through the gas passage, and the deoxygenated boiler feed water flows from the liquid outlet 25 of the flow pipe 20 again. The barrier 40 can change the flow direction of the boiler feed water in the filter cavity 32, to make the boiler feed water can contact the filter module 30 multiple times, thereby realizing the oxygen of the boiler feed water is fully removed. The filter module 30 is surrounded in the outer periphery of the flow pipe 20 along the extension direction of the flow pipe 20, to make the filter module 30 can filter as many as possible the oxygen in the boiler feed water, improve the deoxygenation effect of the boiler feed water.

[0038] Further, as Figure 1As shown, the baffle 40 includes a baffle plate 41, the outer diameter of which is larger than the size of the flow tube 20. The filter module 30 is inserted through the baffle plate 41, and a flow gap is defined between the outer periphery of the baffle plate 41 and the inner wall of the filter chamber 32. This arrangement allows the outer diameter of the baffle plate 41 to be larger than the size of the flow tube 20, and a flow gap is defined between the outer periphery of the baffle plate 41 and the inner wall of the filter chamber 32. This redirects the flow of boiler feed water near one end of the filter chamber 32 and near the baffle plate 41, causing it to flow from the flow gap between the outer periphery of the baffle plate 41 and the inner wall of the filter chamber 32 to the other end of the filter chamber 32. This allows the boiler feed water in the filter chamber 32 to come into contact with the filter module 30 multiple times, thereby enhancing the oxygen removal efficiency of the boiler feed water.

[0039] Specifically, if Figure 2 As shown, the baffle 40 divides the flow tube 20 into a first section 22 and a second section 23. The diameter of the through-holes 21 in the first section 22 gradually decreases as it approaches the baffle 40, while the diameter of the through-holes 21 in the second section 23 gradually increases as it moves away from the baffle 40. This arrangement allows the boiler feed water to flow out of the through-holes 21 in the second section 23 and into the filter chamber 32 as early as possible, fully contacting the filter module 30, while leaving the filter chamber 32 from the through-holes 21 in the first section 22 as late as possible. This increases the contact time between the boiler feed water and the filter module 30 and improves the deoxygenation effect.

[0040] The through holes 21 of the first section 22 and the second section 23 are symmetrically distributed along the barrier portion 40. The symmetrical arrangement of the through holes 21 can achieve a more balanced stress distribution, thereby improving the strength and stability of the flow tube 20. Furthermore, this can reduce processing time and improve processing efficiency.

[0041] Furthermore, the filter module 30 includes a plurality of hollow fiber membranes 31, which are arranged along the extension direction of the circulation tube 20, and the plurality of hollow fiber membranes 31 are evenly distributed on the outer periphery of the circulation tube 20. A gas channel is formed between the plurality of hollow fiber membranes 31, and the middle portions of the plurality of hollow fiber membranes 31 are filled with glue to form a filter cavity 32. The two ends of the gas channel along the extension direction of the circulation tube 20 are respectively connected to the accommodating cavity 11. Through the above arrangement, the plurality of hollow fiber membranes 31 are evenly distributed on the outer periphery of the circulation tube 20, which can increase the contact area with the boiler feed water, thereby improving the deoxygenation efficiency. In addition, the middle portions of the plurality of hollow fiber membranes 31 are filled with glue to form the filter cavity 32, which can prevent the boiler feed water from flowing out of the filter cavity 32. The two ends of the gas channel along the extension direction of the circulation tube 20 are respectively connected to the accommodating cavity 11, which can ensure that the oxygen filtered by the hollow fiber membranes 31 reaches the accommodating cavity 11 smoothly from the gas channel.

[0042] In the embodiment of the present application, the hollow fiber membrane filaments 31 are made of a polypropylene hollow fiber deoxygenation membrane, which has good tensile strength, high air permeability, and higher deoxygenation efficiency when used for water deoxygenation.

[0043] In the embodiment of the present application, the glue poured into the middle of the multiple hollow fiber membranes 31 is resin glue. The resin glue has very high bonding strength and can firmly bond the multiple hollow fiber membranes 31. The resin glue also has good waterproof properties and can effectively isolate the boiler feed water from flowing out of the filter chamber 32.

[0044] Specifically, an air port 12 is provided at one end of the body 10 near the liquid inlet 24, and an exhaust port 13 is provided at one end of the body 10 near the liquid outlet 25. The air port 12 is used to blow inert gas into the body 10. Through the above arrangement, the air port 12 blows inert gas into the body 10, which can cause the oxygen filtered in the hollow fiber membrane filaments 31 to be blown out from the exhaust port 13, thereby allowing the hollow fiber membrane filaments 31 to continuously filter oxygen from the boiler feed water, thereby improving the deoxygenation effect.

[0045] In the embodiment of the present application, the inert gas used is high-purity nitrogen, which is continuously purged with high-purity nitrogen to ensure that the oxygen concentration in the hollow fiber membrane 31 is always very low. In this way, the hollow fiber membrane 31 can continuously filter the oxygen in the boiler feed water, thereby achieving the removal of oxygen in the boiler feed water.

[0046] The air inlet 12 and the exhaust port 13 are both located on the sidewalls of the body 10. This arrangement allows high-purity nitrogen to enter through the air inlet 12, continuously purging oxygen from the hollow fiber membranes 31, and then exit through the exhaust port 13, allowing the hollow fiber membranes 31 to continuously filter oxygen from the boiler feed water. Furthermore, the exhaust port 13 allows oxygen filtered by the hollow fiber membranes 31 within the accommodating chamber 11 to be smoothly discharged.

[0047] Furthermore, the baffle 40 includes a plurality of baffles 41, which are spaced apart along the extension direction of the flow tube 20. With this arrangement, the baffles 41 can repeatedly redirect the flow of boiler feed water within the filter chamber 32, allowing the boiler feed water to contact the hollow fiber membranes 31 multiple times, thereby improving the deoxygenation effect.

[0048] Specifically, the membrane deoxygenation filter also includes a vacuum pump, which is connected to the exhaust port 13. Through this arrangement, high-purity nitrogen is continuously purged and the vacuum pump is evacuated from the exhaust port 13 to ensure that the oxygen concentration in the hollow fiber membrane filaments 31 is always low. In this way, oxygen in the boiler feed water continuously penetrates and diffuses into the hollow fiber membrane filaments 31, thereby improving the deoxygenation effect of the device.

[0049] The membrane deoxidization filter further comprises filter cores 50 arranged on the side of the filter cavity 32 close to the liquid inlet 24 and on the side of the filter cavity 32 close to the liquid outlet 25. Through the above arrangement, the side of the filter cavity 32 close to the liquid inlet 24 and the side of the filter cavity 32 close to the liquid outlet 25 are provided with filter cores 50, which can purify impurities in the inlet water and outlet water and ensure the quality of the outlet water.

[0050] Working process: The boiler feed water enters the filter cavity 32 through the liquid inlet 24 of the flow pipe 20, and then flows out through the through hole 21 at the second section 23. The hollow fiber membrane filaments 31 can filter oxygen in the boiler feed water, and then enter the other end of the filter cavity 32 through the flow gap between the outer periphery of the baffle 41 and the inner wall of the filter cavity 32, and then deoxidize again through the hollow fiber membrane filaments 31. The deoxidized boiler feed water flows into the flow pipe 20 from the through hole 21 at the first section 22, so that the boiler feed water and the hollow fiber membrane filaments 31 are in full contact, and the hollow fiber membrane filaments 31 can fully filter oxygen in the boiler feed water. Finally, the deoxidized boiler feed water flows out from the liquid outlet 25 of the flow pipe 20, and at the same time, high-purity nitrogen gas enters the containing cavity 11 from the blowing port 12, and then enters the gas channel connected with the containing cavity 11. The filtered oxygen in the gas channel is continuously swept to make the oxygen flow to the containing cavity 11 of the body 10 through the gas channel, and the filtered oxygen and high-purity nitrogen in the containing cavity 11 are extracted from the exhaust port 13 by the vacuum pump.

[0051] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0052] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples are not intended to limit the scope of the present application, unless otherwise specifically stated. It is to be understood that the drawings are not necessarily to scale as the dimensions of the parts shown are for the purpose of providing an illustration of the example embodiments only. Techniques, methods, and apparatus known to those of ordinary skill can not be discussed in detail because such techniques, methods, and apparatus are considered to be part of the base art. In all examples shown and discussed herein, any specific values are to be interpreted as merely illustrative and not limiting. Other examples of example embodiments can therefore have different values. It is noted that like numbers and letters on the figures identify like parts throughout the several figures, and therefore, once an item is defined in one figure, it is not necessary to discuss it further in connection with other figures.

[0053] In the description of the utility model, it needs to understand that the orientation words such as " front, rear, upper, lower, left, right " " horizontal, vertical, perpendicular, horizontal " and " top, bottom " and the orientation or positional relationship indicated by the drawings are usually based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, these orientation words do not indicate and imply that the device or element indicated must have a particular orientation or be constructed and operated in a particular orientation, therefore it can not be understood as the limitation of the protection scope of the utility model, the orientation words " inner, outer " refer to the inner and outer of the contour of each component itself.

[0054] For the convenience of description, spatial relative terms such as " above ", " above ", " upper surface ", " upper " and the like can be used here to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawing. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawing. For example, if the device in the drawing is inverted, the device described as " above " or " above " other devices or structures will be positioned " below " or " below " other devices or structures. Thus, the exemplary term " above " can include both " above " and " below ". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used here is interpreted accordingly.

[0055] In addition, it should be noted that the use of " first ", " second " and the like to limit parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore it can not be understood as the limitation of the protection scope of the utility model.

[0056] The above only describes the preferred embodiments of the utility model, and is not used to limit the utility model, for those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A membrane deoxidation filter, characterized in that: The membrane deoxidation filter comprises: A body (10), wherein the body (10) has a receiving cavity (11); A circulation tube (20) is provided through the accommodating cavity (11), the circulation tube (20) having a liquid inlet (24) and a liquid outlet (25) arranged opposite to each other, the liquid inlet (24) and the liquid outlet (25) being both located on the outside of the body (10), the liquid inlet (24) being located at one end of the body (10), and the liquid outlet (25) being located at the other end of the body (10), and a plurality of through holes (21) being provided on a side wall of the circulation tube (20), the plurality of through holes (21) being distributed at intervals along the extension direction of the circulation tube (20); A filter module (30) is arranged in the accommodating chamber (11), and the filter module (30) is arranged around the outer periphery of the circulation tube (20) along the extension direction of the circulation tube (20). The filter module (30) has a filter chamber (32), and the through holes (21) are all located in the filter chamber (32). The filter chamber (32) can prevent the fluid in the filter chamber (32) from flowing to the outside. The filter chamber (32) has a gas channel, and the gas channel is connected to the accommodating chamber (11). The filter module (30) can filter oxygen in the fluid and allow the oxygen to flow into the accommodating chamber (11) through the gas channel. A baffle (40) is provided on the circulation tube (20), the baffle (40) is located in the filter cavity, the baffle (40) is capable of separating the circulation tube (20), and the circulation tubes (20) on both sides of the baffle (40) are provided with the through holes (21).

2. The membrane deoxidation filter according to claim 1, characterized in that The baffle portion (40) comprises a baffle plate (41), the outer diameter of the baffle plate (41) is larger than the size of the circulation tube (20), and the filter module (30) is installed on the baffle plate (41).

3. The membrane deoxidation filter according to claim 1, characterized in that The baffle (40) separates the flow tube (20) into a first section (22) and a second section (23); the diameter of the through hole (21) of the first section (22) gradually decreases in a direction approaching the baffle (40), and the diameter of the through hole (21) of the second section (23) gradually increases in a direction away from the baffle (40).

4. The membrane deoxidation filter according to claim 3, characterized in that The through holes (21) of the first section (22) and the second section (23) are symmetrically distributed along the blocking portion (40).

5. The membrane deoxidation filter according to claim 1, characterized in that The filter module (30) includes a plurality of hollow fiber membranes (31), and the plurality of hollow fiber membranes (31) are arranged along the extension direction of the circulation tube (20), and the plurality of hollow fiber membranes (31) are evenly distributed on the outer periphery of the circulation tube (20), and the gas channel is formed between the plurality of hollow fiber membranes (31), and the middle part of the plurality of hollow fiber membranes (31) is filled with glue to form the filter cavity (32), and the two ends of the gas channel along the extension direction of the circulation tube (20) are respectively connected to the accommodating cavity (11).

6. The membrane deoxidation filter according to claim 1, characterized in that An air blowing port (12) is provided at one end of the body (10) close to the liquid inlet (24), and an air exhaust port (13) is provided at one end of the body (10) close to the liquid outlet (25). The air blowing port (12) is used to blow inert gas into the gas channel.

7. The membrane deoxidation filter according to claim 6, characterized in that The air blowing port (12) and the air exhaust port (13) are both arranged on the side wall of the body (10).

8. The membrane deoxidation filter according to claim 2, characterized in that The baffle portion (40) includes a plurality of baffle plates (41), and the plurality of baffle plates (41) are distributed at intervals along the extension direction of the flow pipe (20).

9. The membrane deoxidation filter according to claim 6, characterized in that The membrane deoxidation filter further comprises a vacuum pump, which is communicated with the exhaust port (13).

10. The membrane deoxidation filter according to claim 1, characterized in that The membrane deoxidation filter further comprises a filter core (50), and the filter core (50) is disposed in both the liquid inlet (24) and the liquid outlet (25).

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