Device and method for removing oxygen from hollow fiber contactor

Abstract

The invention discloses a hollow fiber contactor oxygen removal device and method, and belongs to the technical field of demineralized water treatment.The hollow fiber contactor oxygen removal device comprises a demineralized water tank, a purification tank, a membrane contactor and an oxygen removal water tank which are sequentially communicated through pipelines; the top of the purification box is connected with a water inlet pipe communicated with the demineralized water tank, a water containing tank capable of moving up and down is arranged in the purification box, rotating shafts are rotationally mounted on the inner walls of the two sides of the purification box, an adsorption box is fixed between the two rotating shafts, and ion exchange resin is filled in the adsorption box; a driving mechanism is arranged between the water containing tank and the rotating shaft; according to the invention, deep deoxidation can be effectively carried out on the demineralized water, Ca < + >, Mg < + > and other ions in the demineralized water are further removed, the treatment continuity and the purification effect are ensured, and sediments are prevented from being accumulated in the membrane contactor, so that the quality of the deoxidized water and the flux of the membrane are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of demineralized water treatment, and particularly to a device and method for removing oxygen by a hollow fiber contactor. Background Art

[0002] In the process of boiler feed water treatment, deoxygenation is a very crucial step. Oxygen is the main corrosive substance in the boiler feed water system, and the oxygen in the feed water system should be removed quickly. Otherwise, it will corrode the feed water system and components of the boiler. The corrosive substance iron oxide will enter the boiler, deposit or adhere to the boiler tube wall and heating surface, forming an insoluble and poorly heat-conducting iron scale. The corrosive iron scale will cause pitting on the inner wall of the pipeline, increasing the resistance coefficient. When the pipeline corrosion is severe, even pipeline explosion accidents may occur.

[0003] In the prior art, a membrane deaerator is used to achieve deep deoxidation of demineralized water. The main process is that the demineralized water pretreated by the chemical water treatment station is stored in the demineralized water tank for standby, and then sent to the membrane deaeration skid-mounted module by the demineralized water pump for deoxygenation treatment. The demineralized water after deoxygenation is called deoxygenated water, which is stored in the deoxygenated water tank. The deoxygenated water tank must be nitrogen-sealed by the nitrogen sealing module. The deoxygenated water is transported to each stage of the deoxygenated water heating module by the feed water pump. When entering the boiler economizer, the feed water temperature T≥158°C, and after being heated by the boiler, it reaches the target steam (P = 9.2 Mpa, T = 530°C) and is sent to the steam distribution cylinder module. The steam coming out of the steam distribution cylinder is sent to each production process section for use after being cooled and depressurized according to the requirements of each production process section to reach the corresponding temperature and pressure.

[0004] However, it is found in actual use that although most of the suspended solids and particulate impurities in the demineralized water pretreated by the chemical water treatment station have been removed, there may still be Ca² + and Mg² + remaining in the demineralized water. If local concentration occurs during the operation of the membrane contactor (such as the stagnant layer on the membrane surface), it may accelerate the enrichment and precipitation of Ca² + and Mg² + , forming carbonate or hydroxide precipitates. The precipitates deposit on the edge of the membrane pores, resulting in a decrease in membrane flux and affecting the deoxygenation effect of the demineralized water. Summary of the Invention

[0005] The purpose of the present invention is to provide a device and method for removing oxygen by a hollow fiber contactor, and solve the following technical problems: there may still be Ca² + and Mg² + remaining in the demineralized water. If local concentration occurs during the operation of the membrane contactor (such as the stagnant layer on the membrane surface), it may accelerate the enrichment and precipitation of Ca² + and Mg² + , forming carbonate or hydroxide precipitates. The precipitates deposit on the edge of the membrane pores, resulting in a decrease in membrane flux and affecting the deoxygenation effect of the demineralized water.

[0006] The object of the present invention can be achieved by the following technical solutions: A hollow fiber contactor oxygen removal device, comprising a demineralized water tank, a purification tank, a membrane contactor and a deoxygenated water tank. The demineralized water tank, the purification tank, the membrane contactor and the deoxygenated water tank are sequentially connected through pipelines. The top of the purification tank is connected with a water inlet pipe communicating with the demineralized water tank. A water receiving tank that can move up and down is arranged in the purification tank. Rotating shafts are rotatably installed on both inner walls of the purification tank. An adsorption tank is fixed between the two rotating shafts. Ion exchange resin is filled in the adsorption tank. A driving mechanism is arranged between the water receiving tank and the rotating shaft; A water distribution plate is fixed in the purification tank. A plurality of water outlet heads are arranged in an array on the bottom wall of the water distribution plate. A first docking pipe is connected to the top wall of the water distribution plate. A T-shaped top rod is further fixed at the top end of the first docking pipe. A second docking pipe is connected to the bottom of the water receiving tank. A sealing ring is fixed in the second docking pipe. A gravity sealing ball is arranged above the sealing ring. A stop rod is further arranged at the top of the second docking pipe; Water supply mechanisms are arranged on both sides of the purification tank to supply pure water to the water distribution plate; A drain pipe is connected to the bottom of one side wall of the purification tank, and a sewage discharge pipe is connected to the bottom of the other side wall.

[0007] As a further solution of the present invention: The driving mechanism includes two first racks fixed to the bottom of the water receiving tank. Gears are installed on both rotating shafts. Rectangular through holes are opened on both inner walls of the purification tank. Lifting rods are slidably connected in the rectangular through holes. Second racks are fixed to the ends of the two lifting rods close to each other. The first racks and the second racks are both engaged with the gears. Second magnetic members are fixed to both inner walls of the purification tank. Second adsorbing members are fixed to both side walls of the adsorption tank.

[0008] As a further solution of the present invention: A first magnetic member is fixed to the bottom of the first rack. Mounting blocks are fixed to both inner walls of the purification tank. First adsorbing members are fixed to the upper surfaces of the mounting blocks.

[0009] As a further solution of the present invention: The first water supply pipe of the water supply mechanism extends into the purification tank. An L-shaped second water supply pipe is movably sleeved in the first water supply pipe. The water distribution plate is symmetrically connected with receiving pipes on the upper surface. The top of the receiving pipe is connected with a receiving box. One ends of the two second water supply pipes are located in the receiving box. Sliding grooves are installed at the bottoms of both side walls of the second docking pipe. Sliders are slidably connected in the sliding grooves. A connecting rod is rotatably connected to the slider. One end of the connecting rod is rotatably installed on the second water supply pipe.

[0010] As a further solution of the present invention: The water supply mechanism includes a fixing plate fixed on the side wall of the purification tank. A first water tank and a second water tank are installed on the fixing plate. A pure water inlet pipe is connected to the second water tank, and the pure water inlet pipe is connected to an external water source. A connecting pipe is connected between the first water tank and the second water tank. The first water supply pipe is connected to the first water tank. A piston plate is arranged in the second water tank. The bottom of the piston plate is connected with a movable rod. One end of the movable rod penetrates through the bottom of the second water tank and is connected with a lifting rod. A liquid level sensor is installed on the inner wall of one side of the second water tank, and a limiting rod is fixed on the inner surface of the top wall of the second water tank.

[0011] As a further solution of the present invention: Support blocks are fixed on the inner walls of both sides of the purification tank. Guide rods are fixed on the support blocks. Movable blocks are sleeved on the guide rods. The movable blocks are fixedly connected with the water receiving tank. Springs are also sleeved on the guide rods, and the springs are located between the support blocks and the movable blocks.

[0012] A method for removing oxygen by a hollow fiber contactor device includes the following steps: S1. The demineralized water pretreated by the chemical water treatment station is stored in the demineralized water tank for standby, and is sent into the purification tank by a demineralized water pump for purification treatment to remove residual calcium and magnesium ions. S2. The purified demineralized water is sent into the membrane contactor for deoxygenation treatment, and the demineralized water after deoxygenation is called deoxygenated water. S3. The deoxygenated water is stored in the deoxygenated water tank and waits for subsequent treatment.

[0013] The beneficial effects of the present invention: (1) By setting a purification tank in the present invention, the adsorption tank inside the purification tank is filled with ion exchange resin, which is used to further remove Ca² + and Mg² + and other ions in the demineralized water to prevent their local concentration in the membrane contactor and cause precipitation formation; the water receiving tank can move up and down, and drives the adsorption tank to flip during the up and down movement through the driving mechanism. After each purification stage, the water supply mechanism provides pure water to be sent into the adsorption tank to backwash the ion exchange resin. Through the physical scouring effect, the resin layer is loosened, the intercepted suspended substances, broken resin particles and impurities are removed, and the adsorption effect and service life of the ion exchange resin are prolonged; the present invention ensures the continuity of treatment and the purification effect, prevents the accumulation of precipitates in the membrane contactor, and thus effectively improves the quality of deoxygenated water and the flux of the membrane. (2) For the driving mechanism of the present invention, after the water receiving tank drops under the influence of gravity, the adsorption tank is driven to flip 180° through the driving mechanism. When the purification is completed, the water receiving tank resets, and the adsorption tank also automatically resets. The ion exchange resin that first contacts the demineralized water moves to the lower part, and then pure water is used for backwashing, which is convenient for removing impurities. (3) By providing a water supply mechanism, the main purpose of which is to supply pure water to the water distribution plate. The water supply mechanism includes a first water tank and a second water tank. The pure water first enters the second water tank. During the purification process of the demineralized water, the pure water in the second water tank is pushed into the first water tank for standby. After the purification is completed, the pure water automatically enters the water distribution plate without manual operation, ensuring that the ion adsorption resin can be cleaned after each purification is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 It is a schematic structural diagram of the whole of the present invention; Figure 2 It is a three-dimensional structural diagram of the purification tank of the present invention; Figure 3 It is a first perspective structural diagram of the inside of the purification tank of the present invention; Figure 4 It is a structural diagram of the water receiving tank and the water distribution plate of the present invention; Figure 5 It is a three-dimensional structural diagram of the water distribution plate of the present invention; Figure 6 It is a schematic diagram of the internal structure of the second docking pipe of the present invention; Figure 7 It is a second perspective structural diagram of the inside of the purification tank of the present invention; Figure 8 It is a schematic diagram of the internal structure of the first water tank and the second water tank of the present invention.

[0016] In the figures: 1, demineralized water tank; 2, purification tank; 3, membrane contactor; 4, deaeration water tank; 5, inlet pipe; 6, drain pipe; 7, sewage discharge pipe; 8, water receiving tank; 9, adsorption tank; 10, water distribution plate; 11, first docking pipe; 12, ejector rod; 13, second docking pipe; 14, sealing ring; 15, gravity sealing ball; 16, blocking rod; 17, rotating shaft; 18, first rack; 19, movable block; 20, first magnetic member; 21, gear; 22, rectangular through hole; 23, lifting rod; 24, second rack; 25, mounting block; 26, first adsorbing member; 27, second magnetic member; 28, second adsorbing member; 29, movable rod; 30, fixing plate; 31, first water tank; 32, second water tank; 33, pure water inlet pipe; 34, connecting pipe; 35, piston plate; 36, liquid level sensor; 37, limiting rod; 38, first water supply pipe; 39, second water supply pipe; 40, receiving pipe; 41, receiving box; 42, slideway; 43, connecting rod; 44, support block; 45, guide rod; 46, spring.

[0017] The accompanying drawings are only for illustrative purposes and should not be construed as limiting the present invention; for better illustration of this embodiment, some components in the drawings are omitted, enlarged or reduced, which do not represent the size and shape of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. Detailed implementation manners

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to Figures 1 to 7As shown in the figure, the present invention is a hollow fiber contactor oxygen removal device, which includes a demineralized water tank 1, a purification tank 2, a membrane contactor 3 and a deoxygenated water tank 4. The demineralized water tank 1, the purification tank 2, the membrane contactor 3 and the deoxygenated water tank 4 are sequentially connected through pipelines. A water inlet pipe 5 connected to the demineralized water tank 1 is connected to the top of the purification tank 2. A water holding tank 8 that can move up and down is arranged in the purification tank 2. Rotating shafts 17 are rotatably installed on both inner walls of the purification tank 2. An adsorption tank 9 is fixed between the two rotating shafts 17. Ion exchange resin is filled in the adsorption tank 9. A driving mechanism is arranged between the water holding tank 8 and the rotating shaft 17. A water distribution plate 10 is fixed in the purification tank 2. A plurality of water outlet heads are arranged in an array on the bottom wall of the water distribution plate 10. A first docking pipe 11 is connected to the top wall of the water distribution plate 10. A T-shaped top rod 12 is further fixed to the top end of the first docking pipe 11. A second docking pipe 13 is connected to the bottom of the water holding tank 8. A sealing ring 14 is fixed in the second docking pipe 13. A gravity sealing ball 15 is arranged above the sealing ring 14. A stop rod 16 is further arranged at the top of the second docking pipe 13. Water supply mechanisms are arranged on both sides of the purification tank 2 to supply pure water to the water distribution plate 10. A drain pipe 6 is connected to the bottom of one side wall of the purification tank 2, and a sewage discharge pipe 7 is connected to the bottom of the other side wall.The desalted water pre-treated by the water treatment station is stored in the desalted water tank 1 for standby use, and is pumped into the purification box 2 for purification treatment through the desalted water pump. The desalted water falls into the water tank 8 through the water inlet pipe 5. As the amount of water increases, the water tank 8 slowly descends. Under the action of the driving structure, the adsorption box 9 is driven to flip 180 degrees, so that the resin facing downward is rotated to the top. After the water tank 8 descends, the first butt joint 11 is docked with the second butt joint 13, and the top rod 12 lifts the gravity sealing ball 15. The desalted water enters the water distribution plate 10 and then falls into the adsorption box 9 evenly through multiple water outlets. After being purified and adsorbed by ion exchange resin, it is sent to the membrane contactor 3 through the drain pipe 6 for deoxygenation operation. The key component of the membrane contactor 3 is the hollow fiber membrane. The hollow fiber membrane is prepared from high-performance hydrophobic membrane fibers. The membrane fibers are hollow tubular and are prepared into a uniformly distributed mesh structure. Liquid and gas flow outside the hollow fiber membrane fiber tube at the same time. The gas in the desalted water is compressed. Under the action of force difference, the membrane filaments move into the hollow tube by using tiny pores, and at the same time, the hollow fiber filaments are vacuumed, and the removed gas is collected in the central hollow tube and then extracted, and at the same time, the hollow fiber tube is purged with high-purity nitrogen to achieve deep deoxygenation of the deionized water, and finally sent to the deoxygenated water tank 4 for storage. When the first stage of treatment is completed, the deionized water stops being transported, the water tank 8 rises and resets, driving the adsorption box 9 to flip and reset, and the ion exchange resin that first contacts the deionized water faces downward, and the water supply mechanism provides pure water to the water distribution plate 10 to backwash the ion exchange resin, loosen the resin layer through physical flushing, remove the trapped suspended matter, and break the resin particles and impurities, thereby extending the adsorption effect and service life of the ion exchange resin, and the sewage is discharged through the sewage pipe 7. It is worth noting that during the purification process, the valve of the sewage pipe 7 is closed and the valve of the drainage pipe 6 is opened. During the sewage discharge process, the valve of the sewage pipe 7 is opened and the valve of the drainage pipe 6 is closed. ;

[0020] See also Figure 3 and Figure 7, the driving mechanism includes two first racks 18 fixed to the bottom of the water storage tank 8. Gears 21 are installed on both rotating shafts 17. Rectangular through holes 22 are formed on both side walls of the purification tank 2. Lifting rods 23 are slidably connected in the rectangular through holes 22. Second racks 24 are fixed to the closer ends of the two lifting rods 23. Both the first rack 18 and the second rack 24 are engaged with the gear 21. Second magnetic members 27 are fixed to both inner side walls of the purification tank 2. Second adsorbing members 28 are fixed to both side walls of the adsorption tank 9; when the water storage tank 8 descends, it drives the two first racks 18 to descend. The first rack 18 rotates to drive the rotating shaft 17 to rotate, so that the adsorption tank 9 can be flipped. By setting the length of the first rack 18, the adsorption tank 9 can be exactly flipped 180°. There is a certain suction force between the second adsorbing member 28 and the second magnetic member 27, which will not affect the flipping of the adsorption tank 9 and can also maintain the balance of the adsorption tank 9. It is worth noting that the cross-sectional area of the water storage tank 8 is smaller than the cross-sectional area of the adsorption tank 9 to ensure that the desalted water falling from the water outlet head will not splash outside.

[0021] Refer to Figure 7 , a first magnetic member 20 is fixed to the bottom of the first rack 18. Mounting blocks 25 are fixed to both inner side walls of the purification tank 2. A first adsorbing member 26 is fixed to the upper surface of the mounting block 25; when the water storage tank 8 descends to the lowest point, the first magnetic member 20 contacts and adsorbs the first adsorbing member 26. After stopping the delivery of desalted water, the water storage tank 8 will not immediately rise and reset. When the desalted water in the water storage tank 8 is completely drained, the water storage tank 8 will rise and reset; it is worth noting that both the first adsorbing member 26 and the second adsorbing member 28 are made of iron material, and both the first magnetic member 20 and the second magnetic member 27 are magnets.

[0022] Refer to Figure 3 and Figure 4 , the first water supply pipe 38 of the water supply mechanism extends into the interior of the purification tank 2. An L-shaped second water supply pipe 39 is movably sleeved in the first water supply pipe 38. Connecting pipes 40 are symmetrically connected to the upper surface of the water distribution plate 10. A connecting box 41 is connected to the top of the connecting pipe 40. One ends of the two second water supply pipes 39 are located in the connecting box 41. Slideways 42 are installed at the bottoms of both side walls of the second docking pipe 13. Sliders are slidably connected in the slideways 42. A connecting rod 43 is rotatably connected to the slider. One end of the connecting rod 43 is rotatably installed on the second water supply pipe 39; when the water storage tank 8 and the second docking pipe 13 descend, the second water supply pipe 39 is pushed to move through the connecting rod 43, so that one end of the second water supply pipe 39 is separated from the connecting pipe 40. At this time, pure water cannot be discharged. When the water storage tank 8 rises and resets, the two second water supply pipes 39 approach each other, and one end of the second water supply pipe 39 is aligned with the connecting pipe 40. At this time, pure water will be discharged to avoid waste of pure water.

[0023] Refer to Figure 3 、 Figure 7 andFigure 8 , the water supply mechanism includes a fixing plate 30 fixed on the side wall of the purification tank 2. A first water tank 31 and a second water tank 32 are installed on the fixing plate 30. A pure water inlet pipe 33 is connected to the second water tank 32, and the pure water inlet pipe 33 is connected to an external water source. A connecting pipe 34 is connected between the first water tank 31 and the second water tank 32. A first water supply pipe 38 is connected to the first water tank 31. A piston plate 35 is arranged in the second water tank 32. The bottom of the piston plate 35 is connected with a movable rod 29. One end of the movable rod 29 penetrates through the bottom of the second water tank 32 and is connected with a lifting rod 23. A liquid level sensor 36 is installed on the inner wall of one side of the second water tank 32. A limiting rod 37 is fixed on the inner surface of the top wall of the second water tank 32; the liquid level sensor 36 is used to detect the water volume in the second water tank 32. According to the signal of the liquid level sensor 36, the external water source automatically conveys pure water into the second water tank 32. When the liquid level reaches the height of the liquid level sensor 36, the water supply stops. When the water receiving tank 8 descends, the second rack 24 and the lifting rod 23 will rise. The piston plate 35 is used to send the pure water into the first water tank 31 through the connecting pipe 34 for standby. A one-way valve is arranged on the pure water inlet pipe 33 to prevent the pure water from flowing back. When the water receiving tank 8 rises, the pure water is discharged through the first water supply pipe 38 and the second water supply pipe 39; due to the limitation of the limiting rod 37, the height of the bottom of the limiting rod 37 is less than the height of the liquid level sensor 36. Even if the piston plate 35 rises to the maximum height, the liquid level sensor 36 can always detect the water level signal, so that the external water source will not supply water, and the amount of pure water entering the first water tank 31 each time remains fixed, avoiding the situation that the resin expands and breaks due to excessive water volume.

[0024] Refer to Figure 7 , support blocks 44 are fixed on the inner walls on both sides of the purification tank 2. Guide rods 45 are fixed on the support blocks 44. Movable blocks 19 are sleeved on the guide rods 45. The movable blocks 19 are fixedly connected with the water receiving tank 8. Springs 46 are also sleeved on the guide rods 45. The springs 46 are located between the support blocks 44 and the movable blocks 19.

[0025] A method for removing oxygen by a hollow fiber contactor device includes the following steps: S1. The demineralized water pretreated by the chemical water treatment station is stored in the demineralized water tank 1 for standby, and is sent into the purification tank 2 by a demineralized water pump for purification treatment to remove residual calcium and magnesium ions; S2. The purified demineralized water is sent into the membrane contactor 3 for deoxygenation treatment, and the demineralized water after deoxygenation is called deoxygenated water; S3. The deoxygenated water is stored in the deoxygenated water tank 4 and waits for subsequent treatment.

[0026] Working principle of the present invention: The demineralized water after pretreatment from the water treatment plant is stored in the demineralized water tank 1 for standby, and is sent into the purification tank 2 by the demineralized water pump for purification treatment. The demineralized water falls into the water storage tank 8 through the water inlet pipe 5. As the water volume increases, the water storage tank 8 slowly descends along the guide rod 45 and compresses the spring 46. Due to the presence of the sealing ring 14 and the gravity sealing ball 15, the demineralized water cannot be discharged at this time. Under the action of the driving structure, the adsorption tank 9 is driven to flip 180°, so that the resin facing downward rotates to the upper side. After the water storage tank 8 descends, the first docking pipe 11 is docked with the second docking pipe 13, and the ejector rod 12 pushes up the gravity sealing ball 15, and the demineralized water enters the water distribution plate 10, and then evenly falls into the adsorption tank 9 through a plurality of water outlets. After being purified and adsorbed by the ion exchange resin, it is sent into the membrane contactor 3 through the drain pipe 6 for deoxygenation operation to achieve deep deoxidation of the demineralized water, and finally sent into the deoxygenated water tank 4 through the drain pipe 6 for storage; The liquid level sensor 36 is used to detect the water volume in the second water tank 32. According to the signal of the liquid level sensor 36, the external water source automatically transports pure water into the second water tank 32. When the liquid level reaches the height of the liquid level sensor 36, the water supply stops. When the water storage tank 8 descends, the second rack 24 and the lifting rod 23 will rise, and the piston plate 35 is used to send the pure water into the first water tank 31 through the connecting pipe 34 for standby. After the water storage tank 8 and the second docking pipe 13 descend, the second water supply pipe 39 is pushed to move through the connecting rod 43, so that one end of the second water supply pipe 39 is separated from the receiving pipe 40 and slides in the receiving box 41, and the end of the second water supply pipe 39 contacts the bottom wall of the receiving box 41. At this time, the pure water cannot be discharged; When the first-stage treatment is completed and the demineralized water stops being transported, as the demineralized water in the water storage tank 8 is drained, under the action of the spring 46, the water storage tank 8 rises and resets, driving the adsorption tank 9 to flip and reset. The ion exchange resin that first contacts the demineralized water faces downward. The connecting rod 43 drives the two second water supply pipes 39 to approach each other, and one end of the second water supply pipe 39 is aligned with the receiving pipe 40. At this time, the pure water enters the water distribution plate 10 and then enters the adsorption tank 9 through the water outlet to backwash the ion exchange resin, loosen the resin layer through physical scouring, remove the intercepted suspended solids, broken resin particles and impurities, and extend the adsorption effect and service life of the ion exchange resin. The sewage is discharged through the sewage pipe 7.

[0027] The above has described an embodiment of the present invention in detail, but the content described is only the preferred embodiment of the present invention and cannot be considered as limiting the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A hollow fiber contactor oxygen removal device, comprising a demineralized water tank (1), a purification tank (2), a membrane contactor (3), and a deoxygenated water tank (4). The demineralized water tank (1), the purification tank (2), the membrane contactor (3), and the deoxygenated water tank (4) are sequentially connected through pipelines. It is characterized in that, A water inlet pipe (5) communicating with a demineralized water tank (1) is connected to the top of the purification tank (2). A water receiving tank (8) capable of moving up and down is arranged in the purification tank (2). Rotating shafts (17) are rotatably installed on the inner walls of both sides of the purification tank (2). An adsorption tank (9) is fixed between the two rotating shafts (17). Ion exchange resin is filled in the adsorption tank (9). A driving mechanism is arranged between the water receiving tank (8) and the rotating shaft (17). A water distribution plate (10) is fixed in the purification tank (2). A plurality of water outlet heads are arranged in an array on the bottom wall of the water distribution plate (10). A first docking pipe (11) is connected to the top wall of the water distribution plate (10). A T-shaped top rod (12) is further fixed to the top end of the first docking pipe (11). A second docking pipe (13) is connected to the bottom of the water receiving tank (8). A sealing ring (14) is fixed in the second docking pipe (13). A gravity sealing ball (15) is arranged above the sealing ring (14). A stop rod (16) is further arranged at the top of the second docking pipe (13). Water supply mechanisms are arranged on both sides of the purification tank (2) to supply pure water to the water distribution plate (10). A drain pipe (6) is connected to the bottom of one side wall of the purification tank (2), and a sewage discharge pipe (7) is connected to the bottom of the other side wall.

2. The oxygen removal device using a hollow fiber contactor according to claim 1, characterized in that, The driving mechanism includes two first racks (18) fixed to the bottom of the water receiving tank (8). Gears (21) are installed on both of the rotating shafts (17). Rectangular through holes (22) are formed in the inner walls of both sides of the purification tank (2). Lifting rods (23) are slidably connected in the rectangular through holes (22). Second racks (24) are fixed to the ends of the two lifting rods (23) close to each other. The first racks (18) and the second racks (24) are both engaged with the gears (21). Second magnetic members (27) are fixed to the inner walls of both sides of the purification tank (2). Second adsorbing members (28) are fixed to the inner walls of both sides of the adsorption tank (9).

3. The oxygen removal device using a hollow fiber contactor according to claim 2, characterized in that, A first magnetic member (20) is fixed to the bottom of the first rack (18). Mounting blocks (25) are fixed to the inner walls of both sides of the purification tank (2). First adsorbing members (26) are fixed to the upper surfaces of the mounting blocks (25).

4. The oxygen removal device of a hollow fiber contactor according to claim 2, characterized in that, The first water supply pipe (38) of the water supply mechanism extends into the purification tank (2). An L-shaped second water supply pipe (39) is movably sleeved in the first water supply pipe (38). Connecting pipes (40) are symmetrically connected to the upper surface of the water distribution plate (10). A receiving box (41) is connected to the top of the connecting pipe (40). One ends of the two second water supply pipes (39) are located in the receiving box (41). Slideways (42) are installed on the bottom walls of both sides of the second docking pipe (13). Sliders are slidably connected in the slideways (42). A connecting rod (43) is rotatably connected to the slider. One end of the connecting rod (43) is rotatably installed on the second water supply pipe (39).

5. The oxygen removal device using a hollow fiber contactor according to claim 4, characterized in that, The water supply mechanism includes a fixed plate (30) fixed on the side wall of the purification tank (2). A first water tank (31) and a second water tank (32) are installed on the fixed plate (30). A pure water inlet pipe (33) is connected to the second water tank (32), and the pure water inlet pipe (33) is connected to an external water source. A connecting pipe (34) is connected between the first water tank (31) and the second water tank (32). The first water supply pipe (38) is connected to the first water tank (31). A piston plate (35) is arranged in the second water tank (32). The bottom of the piston plate (35) is connected with a movable rod (29). One end of the movable rod (29) penetrates through the bottom of the second water tank (32) and is connected with a lifting rod (23). A liquid level sensor (36) is installed on the inner wall of one side of the second water tank (32). A limiting rod (37) is fixed on the inner surface of the top wall of the second water tank (32).

6. The oxygen removal device of a hollow fiber contactor according to claim 1, characterized in that, Support blocks (44) are fixed on the inner walls on both sides of the purification tank (2). Guide rods (45) are fixed on the support blocks (44). A movable block (19) is sleeved on the guide rods (45). The movable block (19) is fixedly connected with the water receiving tank (8). A spring (46) is also sleeved on the guide rods (45). The spring (46) is located between the support block (44) and the movable block (19).

7. The method for removing oxygen by using the hollow fiber contactor according to claim 1, wherein It includes the following steps: S1. The demineralized water pretreated by the chemical water station is stored in the demineralized water tank (1) for standby, and is sent into the purification tank (2) by a demineralized water pump for purification treatment to remove residual calcium and magnesium ions; S2. The purified demineralized water is sent into the membrane contactor (3) for deoxygenation treatment, and the demineralized water after deoxygenation is called deoxygenated water; S3. The deoxygenated water is stored in the deoxygenated water tank (4) and waits for subsequent treatment.

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