A deoxidized isobaric drying system and process

Abstract

The application relates to the technical field of hydrogen purification, in particular to a deoxygenation isobaric drying system and process, which comprises a deoxygenation tower, a support plate is arranged in the deoxygenation tower, the support plate is located at the middle position of the deoxygenation tower, a separation assembly is arranged on the two sides of the support plate, the separation assembly and the support plate are used for separating multiple reaction cavities in the deoxygenation tower, air channels are arranged on the support plate, the air channels are used for connecting adjacent reaction cavities on the two sides of the support plate, and deoxygenation catalysts are filled in the air channels. The application has the effect of improving the purity of the purified hydrogen.

Description

Technical Field

[0001] This application relates to the technical field of hydrogen purification, and in particular to a deoxygenation isobaric drying system and process. Background Technology

[0002] Currently, coke oven gas is the gas produced by steel mills and coke plants during the coking process. Coke oven gas has a complex composition, primarily consisting of hydrogen and methane, while also containing small amounts of carbon monoxide, carbon dioxide, oxygen, nitrogen, and hydrocarbons. Hydrogen, in particular, can be used as a clean energy source.

[0003] Currently, pressure swing adsorption (PSA) is typically used to purify hydrogen from coke oven gas. However, the hydrogen extracted by PSA still contains trace amounts of oxygen, resulting in insufficient purity. Therefore, the produced hydrogen needs to undergo a deoxygenation and drying process to separate the oxygen. The commonly used equipment in this process is a deoxygenation tower, which stores a deoxygenation catalyst. Under the action of the catalyst, the trace amounts of oxygen in the hydrogen react with the hydrogen to form water. After cooling and drying, the hydrogen reaches the required purity. The purified hydrogen then proceeds to the filling process to complete hydrogen production.

[0004] Regarding the aforementioned technologies: the concentration and flow rate of hydrogen entering the deoxygenation tower are different, which can easily lead to insufficient purification and deoxygenation reaction, resulting in low purity of the purified hydrogen. Summary of the Invention

[0005] To improve the purity of the purified hydrogen, this application provides a deoxygenation isobaric drying system and process.

[0006] In a first aspect, this application provides a deoxygenation isobaric drying system, which adopts the following technical solution:

[0007] An isobaric deoxygenation drying system includes a deoxygenation tower, a support plate disposed inside the deoxygenation tower, the support plate being located in the middle of the deoxygenation tower, and partition components disposed on both sides of the support plate. The partition components and the support plate together are used to divide multiple reaction chambers within the deoxygenation tower. Gas channels are formed on the support plate, and the gas channels are used to connect adjacent reaction chambers located on both sides of the support plate. The gas channels are filled with a deoxygenation catalyst.

[0008] By adopting the above technical solution, when crude hydrogen enters the deoxygenation tower, it flows through different reaction chambers via gas channels, allowing the crude hydrogen to remain in the deoxygenation tower for a longer period of time. This enables the deoxygenation catalyst to fully function, thereby promoting the reaction between hydrogen and oxygen, reducing the oxygen content in the hydrogen, and improving the purity of the purified hydrogen to a certain extent.

[0009] Optionally, the separation component includes a separator plate and a baffle plate, and multiple separator plates and baffle plates are respectively provided. The separator plates and baffle plates are respectively disposed on the support plate. The separator plates are staggered on both sides of the support plate. The baffle plates correspond one-to-one with the separator plates and are spaced apart. The air passage is located between the baffle plates and the separator plates. The baffle plates are used to separate moisture from the gas.

[0010] By adopting the above technical solution, when hydrogen passes between the separator plate and the baffle plate, the moisture carried in the hydrogen will collide with the baffle plate and be intercepted by the baffle plate, thereby reducing the moisture carried in the deoxygenated hydrogen to a certain extent, which facilitates the subsequent drying of the hydrogen.

[0011] Optionally, the partition plate is provided with a baffle section on the side near the baffle plate, and the baffle section is arranged parallel to the baffle plate.

[0012] By adopting the above technical solution, the baffle section can also retain the moisture carried in the hydrogen, thereby further reducing the moisture carried in the deoxygenated hydrogen.

[0013] Optionally, the deoxygenation tower is equipped with a movable component, and a chute is formed in the deoxygenation tower along its own height direction. The end of the chute is close to the partition plate and away from the support plate. The chute is connected to the reaction chamber. The movable component is inserted into the chute. The partition plate and the baffle plate are inclined towards the bottom of the deoxygenation tower. The end of the partition plate away from the support plate is connected to the movable component. The movable component is used to guide the water on the partition plate to the bottom of the deoxygenation tower.

[0014] By adopting the above technical solution, the baffle is inclined so that the water trapped on the baffle can flow onto the partition plate after a certain accumulation and gather at the position of the partition plate near the chute. This makes it easier for the moving components to guide the gathered water to the bottom of the deoxygenation tower, thereby reducing the possibility of excessive water accumulation on the partition plate, which could lead to an increase in the humidity of the hydrogen flowing out of the deoxygenation tower.

[0015] Optionally, the movable component includes a movable plate inserted into the chute. The movable plate has a first guide channel along its height direction. The first guide channel is connected to multiple reaction chambers and is used to guide the water on the partition plate to the bottom of the deoxygenation tower.

[0016] By adopting the above technical solution, the first guide channel is designed to facilitate the diversion of water from multiple reaction chambers to the bottom of the deoxygenation tower.

[0017] Optionally, the movable plate is provided with a plurality of second guide channels communicating with the reaction chamber. The plurality of second guide channels are spaced apart and are respectively connected to the first guide channel. The width of the second guide channel is greater than that of the first guide channel. The end of the partition plate away from the support plate is provided with a protrusion. The protrusion is slidably inserted into the first guide channel and fits against the inner wall of the first guide channel. The side of the movable plate near the partition plate is provided with a plurality of floating plates. The floating plates correspond one-to-one with the partition plates and are spaced apart.

[0018] By adopting the above technical solution, when the protrusion is inserted into the first guide channel, the protrusion can block the first guide channel, making it difficult for the crude hydrogen gas entering the deoxygenation tower to flow through the first and second guide channels in different reaction chambers, thereby promoting the flow of crude hydrogen gas through the gas channel in different reaction chambers, which facilitates the deoxygenation of crude hydrogen gas.

[0019] When moisture accumulates in the reaction chamber, it gathers between the float plate and the partition plate. When excessive moisture accumulates, it exerts buoyancy on the float plate, causing it to move the movable plate towards the top of the deoxygenation tower. This allows the protrusion to detach from the first guide channel and insert into the second guide channel. At this point, the protrusion no longer blocks the first guide channel, and because the width of the second guide channel is greater than the first, it is less likely for the protrusion to block it. This facilitates the flow of moisture from the reaction chamber through both the first and second guide channels to the bottom of the deoxygenation tower.

[0020] Optionally, the bottom of the deoxygenation tower is connected to a drainage pipe, which is used to drain the water inside the deoxygenation tower, and a solenoid valve is installed on the drainage pipe.

[0021] By adopting the above technical solution, when it is necessary to drain the water accumulated at the bottom of the deoxygenation tower, the solenoid valve is opened, so that the water in the deoxygenation tower can be discharged through the drainage pipe.

[0022] Optionally, it includes a crude hydrogen heater and a crude hydrogen cooler. The deoxygenation tower is provided with an inlet and an outlet, which are respectively connected to the reaction chamber. The crude hydrogen heater is connected to the inlet, and the crude hydrogen cooler is connected to the outlet.

[0023] By adopting the above technical solution, the crude hydrogen heater can heat the crude hydrogen gas so that the crude hydrogen gas can undergo deoxygenation reaction in the deoxygenation tower; the crude hydrogen cooler can cool the deoxygenated hydrogen gas so as to reduce the temperature of the deoxygenated hydrogen gas.

[0024] Optionally, the system includes a filter and a drying unit. The filter is connected to the crude hydrogen cooler. The drying unit includes a first drying tower, a second drying tower, a pre-drying tower, a water separator, a hydrogen heater, a hydrogen cooler, a buffer tank, a first four-way valve, a second four-way valve, and a third four-way valve. The first four-way valve is connected to the filter, the hydrogen cooler, the pre-drying tower, and the second four-way valve via pipelines. The second four-way valve is connected to the filter, the first drying tower, and the second drying tower via pipelines. The third four-way valve is connected to the hydrogen heater, the buffer tank, the first drying tower, and the second drying tower. The pre-drying tower is connected to the hydrogen heater. The water separator is connected to the hydrogen cooler and the filter via pipelines.

[0025] By adopting the above technical solution, the filter can filter the deoxygenated hydrogen, thereby improving the cleanliness of the hydrogen and reducing the possibility of impurities carried in the hydrogen entering subsequent equipment. Furthermore, the first and second drying towers can be used alternately, facilitating uninterrupted drying of the deoxygenated hydrogen.

[0026] Secondly, this application provides a deoxidation isobaric drying process, which adopts the following technical solution:

[0027] A deoxygenation isobaric drying process, based on the deoxygenation isobaric drying system described in any one of the above, includes the following steps:

[0028] Crude hydrogen gas is passed through a crude hydrogen heater and then into the deoxygenation tower.

[0029] The deoxygenated hydrogen gas passes through a crude hydrogen cooler and then enters a filter.

[0030] The filtered hydrogen is divided into two paths. One path enters the first drying tower through the second four-way valve for drying, while the other path enters the second drying tower through the first four-way valve, passing through the pre-drying tower, the hydrogen heater, and the third four-way valve in sequence. The second drying tower is then regenerated by hot blowing. The hydrogen then flows out of the second drying tower and passes through the second four-way valve, the first four-way valve, the hydrogen cooler, the water separator, and the second four-way valve in sequence before entering the first drying tower for drying.

[0031] After being dried in the first drying tower, the two streams of hydrogen enter the buffer tank through the third four-way valve to complete the purification of the hydrogen.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] 1. Through the cooperation of the support plate and the partition plate, the crude hydrogen needs to flow between different reaction chambers after entering the deoxygenation tower, so that the crude hydrogen can stay in the deoxygenation tower for a longer time, so that the oxygen and hydrogen in the crude hydrogen can react fully, which is conducive to improving the purity of the purified hydrogen.

[0034] 2. Through the cooperation of the partition plate, the baffle section, the baffle plate, the movable plate, the float plate, the partition plate and the protrusion, when the hydrogen flows in different reaction chambers, the water carried in the hydrogen can be intercepted and gathered at the position of the partition plate near the first guide channel. This reduces the water carried in the deoxygenated hydrogen to a certain extent. When too much water accumulates on the partition plate, the water will generate buoyancy on the float plate, which will drive the float plate to move. The float plate will drive the movable plate to move, which will facilitate the water accumulated on the partition plate to flow through the first guide channel and the second guide channel to the bottom of the deoxygenation tower.

[0035] 3. Through the cooperation of the first drying tower, the second drying tower, the pre-drying tower, the water separator, the hydrogen heater, the buffer tank, the first four-way valve, the second four-way valve, and the third four-way valve, the deoxygenated hydrogen can be divided into two paths. One path is directly dried, and the other path is used as regeneration gas to participate in the regeneration process of the first or second drying tower, thereby facilitating the continuous production of purified hydrogen. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the overall structure of a deoxygenation isobaric drying system according to an embodiment of this application.

[0037] Figure 2 This is a cross-sectional view of the deoxygenation tower according to an embodiment of this application.

[0038] Figure 3 This is a schematic diagram of the structure of the active component in an embodiment of this application.

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Crude hydrogen heater; 2. Deoxygenation tower; 21. Inlet; 22. Outlet; 23. Support plate; 231. Gas duct; 24. Separation assembly; 241. Separation plate; 2411. Baffle section; 2412. Protrusion; 242. Baffle plate; 25. Reaction chamber; 26. Deoxygenation catalyst; 27. Slide chute; 28. Movable assembly; 281. Movable plate; 2811. First guide channel; 2812. Second guide channel Tank; 282, Float; 29, Drainage pipe; 291, Solenoid valve; 3, Crude hydrogen cooler; 4, Filter; 5, Drying unit; 51, Drying tower; 511, First drying tower; 512, Second drying tower; 52, Pre-drying tower; 53, Water separator; 54, Hydrogen heater; 55, Hydrogen cooler; 56, Buffer tank; 57, First four-way valve; 58, Second four-way valve; 59, Third four-way valve. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0042] In the description of this application, crude hydrogen refers to hydrogen containing a small amount of oxygen.

[0043] This application discloses a deoxygenation isobaric drying system.

[0044] Reference Figure 1 and Figure 2 The deoxygenation isobaric drying system includes a crude hydrogen heater 1, a deoxygenation tower 2, a crude hydrogen cooler 3, a filter 4, and a drying unit 5, which are connected sequentially by pipelines. The deoxygenation tower 2 has an inlet 21 and an outlet 22. The crude hydrogen heater 1 is connected to the inlet 21 via a pipeline, and the crude hydrogen cooler 3 is connected to the outlet 22 via a pipeline. When crude hydrogen enters the deoxygenation tower 2 through the crude hydrogen heater 1, the oxygen and hydrogen in the crude hydrogen react under the action of the deoxygenation catalyst 26, thereby reducing the oxygen content in the hydrogen. The hydrogen in the deoxygenation tower 2 then passes through the crude hydrogen cooler 3 and the filter 4 before entering the drying unit 5 for drying, thus obtaining hydrogen with the required purity.

[0045] In this embodiment, two filters 4 can be provided, and the two filters 4 are connected in parallel. When one filter 4 becomes clogged, causing the resistance to increase, the other filter 4 can be switched to work, and the clogged filter 4 can be cleaned or replaced, which is beneficial for continuous filtration of hydrogen.

[0046] Reference Figure 2 A support plate 23 is fixedly connected inside the deoxygenation tower 2. The support plate 23 is located in the middle of the deoxygenation tower 2, and a partition component 24 is provided on both sides of the support plate 23.

[0047] The separation assembly 24 includes a separation plate 241 and a baffle plate 242. Multiple separation plates 241 are provided, and each separation plate 241 is fixedly connected to the support plate 23. The multiple separation plates 241 located on both sides of the support plate 23 are staggered, and the end of the separation plate 241 away from the support plate 23 is attached to the inner wall of the deoxygenation tower 2, so that the separation plate 241 and the support plate 23 cooperate with each other to separate multiple reaction chambers 25 within the deoxygenation tower 2.

[0048] The number of baffles 242 is equal to the number of partition plates 241. Multiple baffles 242 are fixedly connected to the support plate 23. The baffles 242 and partition plates 241 are arranged in a one-to-one correspondence and at intervals. A baffle section 2411 is fixedly connected to the side of the partition plate 241 near the baffles 242. The baffle section 2411 is arranged parallel to the baffles 242.

[0049] The support plate 23 is also provided with multiple air passages 231, each of which is used to connect adjacent reaction chambers 25 located on both sides of the support plate 23, and each air passage 231 is located between the baffle plate 242 and the baffle section 2411. The air passages 231 are filled with deoxygenation catalyst 26.

[0050] When crude hydrogen enters the deoxygenation tower 2 through the inlet 21, it flows through the gas passage 231 into different reaction chambers 25, allowing it to remain in the deoxygenation tower 2 for a longer time and fully react with the deoxygenation catalyst 26. This facilitates the full reaction between the oxygen and hydrogen in the crude hydrogen, thereby reducing the oxygen content in the hydrogen and improving the purity of the purified hydrogen.

[0051] When hydrogen reacts with oxygen in deoxygenation tower 2, the hydrogen will carry a small amount of moisture. When the hydrogen passes between baffle 242 and baffle section 2411, the moisture carried in the hydrogen will collide with baffle 242 and be intercepted by baffle 242, thereby reducing the moisture carried in the deoxygenated hydrogen to a certain extent.

[0052] In this embodiment, the partition plate 241 and the baffle plate 242 are inclined toward the bottom of the deoxygenation tower 2. The partition plate 241 drives the baffle section 2411 to tilt, so that the water trapped on the baffle plate 242 and the baffle section 2411 can flow onto the partition plate 241 after a certain accumulation and gather at the position of the partition plate 241 closest to the bottom of the deoxygenation tower 2.

[0053] The deoxygenation tower 2 has a chute 27 along its height direction. The end of the chute 27 is located near the partition plate 241 and away from the support plate 23, and the chute 27 is connected to the reaction chamber 25.

[0054] Reference Figure 2 and Figure 3The deoxygenation tower 2 is equipped with a movable component 28, which includes a movable plate 281 and a floating plate 282. The movable plate 281 is slidably inserted into the slide groove 27. A first guide groove 2811 is opened on the movable plate 281 along its own height direction, and the first guide groove 2811 is connected to multiple reaction chambers 25 respectively.

[0055] A protrusion 2412 is fixedly connected to one end of the partition plate 241 away from the support plate 23. The protrusion 2412 is slidably inserted into the first guide channel 2811 and fits against the inner wall of the first guide channel 2811, so that the protrusion 2412 can block the first guide channel 2811 and reduce the possibility of crude hydrogen flowing through the first guide channel 2811 into different reaction chambers 25.

[0056] The movable plate 281 is also provided with a plurality of second guide channels 2812 that communicate with the reaction chamber 25. The plurality of second guide channels 2812 are evenly distributed along the height direction of the movable plate 281 and communicate with the first guide channel 2811, and the width of the second guide channel 2812 is greater than that of the first guide channel 2811.

[0057] Multiple floats 282 are fixedly connected to the side of the movable plate 281 near the partition plate 241. The floats 282 correspond one-to-one with the partition plate 241 and are spaced apart, so that the moisture carried in the hydrogen can be trapped and collected between the floats 282 and the partition plate 241.

[0058] When excessive moisture accumulates between the float plate 282 and the partition plate 241, the moisture exerts buoyancy on the float plate 282, causing it to move the movable plate 281 towards the top of the deoxygenation tower 2. This allows the protrusion 2412 to detach from the first guide channel 2811 and insert into the second guide channel 2812. At this point, the protrusion 2412 no longer blocks the first guide channel 2811, thus facilitating the flow of moisture in the reaction chamber 25 through the first and second guide channels 2811 to the bottom of the deoxygenation tower 2.

[0059] Reference Figure 2 The bottom of the deoxygenation tower 2 is connected to a drainage pipe 29, and a solenoid valve 291 is fixedly connected to the drainage pipe 29. When it is necessary to drain the water accumulated at the bottom of the deoxygenation tower 2, the solenoid valve 291 is opened so that the water in the deoxygenation tower 2 can be discharged through the drainage pipe 29.

[0060] Reference Figure 1 The drying unit 5 includes a drying tower 51, a pre-drying tower 52, a water separator 53, a hydrogen heater 54, a hydrogen cooler 55, a buffer tank 56, a first four-way valve 57, a second four-way valve 58, and a third four-way valve 59. In this embodiment, the drying tower 51 includes a first drying tower 511 and a second drying tower 512.

[0061] A regulating circuit connects filter 4 and drying unit 5. The regulating circuit splits into two paths near the drying unit 5: one path connects to the first four-way valve 57, and the other path connects to the second four-way valve 58 and water separator 53 respectively. The first four-way valve 57 is also connected to the hydrogen cooler 55, pre-drying tower 52, and the second four-way valve 58. The pre-drying tower 52 is connected to the hydrogen heater 54 via a pipeline, and the water separator 53 is connected to the hydrogen cooler 55 via a pipeline.

[0062] The second four-way valve 58 is also connected to the first drying tower 511 and the second drying tower 512 respectively, and the third four-way valve 59 is connected to the hydrogen heater 54, the buffer tank 56, the first drying tower 511 and the second drying tower 512 respectively.

[0063] Both the first drying tower 511 and the second drying tower 512 are equipped with adsorbents, which can adsorb moisture from the hydrogen gas to dry it. The dried hydrogen gas will enter the buffer tank 56 through a pipeline, and then enter the filling process for filling, thereby obtaining hydrogen gas with the required purity.

[0064] The deoxygenation isobaric drying system in this application is a closed-loop system. During the drying process of hydrogen, there is no need to introduce an external regeneration gas source and pressurization equipment, which reduces production costs to a certain extent.

[0065] The implementation principle of this application embodiment is as follows: when crude hydrogen needs to be deoxygenated and purified, the crude hydrogen is first passed into the crude hydrogen heater 1 for heating, and then the heated crude hydrogen is passed into the deoxygenation tower 2 through the air inlet 21, so that the crude hydrogen flows between different reaction chambers 25, and the crude hydrogen reacts with the deoxygenation catalyst 26 in the air channel 231 every time it passes through the air channel 231, so as to promote the reaction of oxygen and hydrogen carried in the crude hydrogen to produce water.

[0066] When crude hydrogen gas carrying moisture passes through baffle 242, the moisture carried in the crude hydrogen gas will be intercepted by baffle 242, thereby reducing the moisture carried in the hydrogen gas when it leaves the deoxygenation tower 2 through outlet 22.

[0067] After flowing out of the deoxygenation tower 2, the hydrogen gas enters the crude hydrogen cooler 3 through a pipeline for cooling, then flows through the filter 4 for filtration, and finally flows into the first drying tower 511 or the second drying tower 512 through the regulating circuit. This allows the first drying tower 511 and the second drying tower 512 to be used alternately, facilitating the continuous drying of the deoxygenated hydrogen gas to obtain hydrogen gas with the required purity.

[0068] This application also discloses a deoxidation isobaric drying process, including the following steps:

[0069] After being heated by the crude hydrogen heater 1, the crude hydrogen gas is introduced into the deoxygenation tower 2, where it reacts with oxygen under the action of the deoxygenation catalyst 26 to undergo deoxygenation. The deoxygenated hydrogen gas is then cooled by the crude hydrogen cooler 3 and filtered by the filter 4 before entering the drying unit 5 through the regulating circuit.

[0070] At this time, the regulating circuit will split the hydrogen into two paths, with the first drying tower 511 in a drying state and the second drying tower 512 in a regeneration state.

[0071] When the first drying tower 511 is in a drying state, a stream of hydrogen gas enters the first drying tower 511 directly through the second four-way valve 58 for drying. The dried hydrogen gas then enters the buffer tank 56 through the third four-way valve 59 and flows into the filling process for filling.

[0072] The regeneration process in the second drying tower 512 includes two steps: heating and cooling.

[0073] Heating and regeneration step: One stream of hydrogen gas enters the pre-drying tower 52 through the second four-way valve 58 for drying. The dried hydrogen gas then enters the hydrogen heater 54 for heating, and then enters the second drying tower 512 through the third four-way valve 59 for hot blowing. At this time, the direction of hot blowing is opposite to the direction of hydrogen entering the second drying tower 512 for drying, causing the adsorbent in the second drying tower 512 to heat up and desorb water. The desorbed water, along with the hydrogen gas, passes through the second four-way valve 58 and the first four-way valve 57 sequentially into the hydrogen cooler 55 for cooling, and then enters the water separator 53, thereby separating the water from the hydrogen gas. Finally, it is mixed with another stream of hydrogen gas and enters the first drying tower 511 through the second four-way valve 58 for adsorption and drying.

[0074] Cooling Step: One stream of hydrogen gas enters the second drying tower 512 through the first four-way valve 57 and the second four-way valve 58, performing a cold purge to lower the temperature of the adsorbent inside the second drying tower 512 to room temperature. Then, it flows through the third four-way valve 59 into the hydrogen heater 54 for heating. The heated hydrogen then flows into the pre-drying tower 52 for hot purge regeneration. The hydrogen exiting the pre-drying tower 52 then flows through the first four-way valve 57 into the hydrogen cooler 55 for cooling, and after gas-liquid separation by the water separator 53, it mixes with another stream of hydrogen gas and together flows through the second four-way valve 58 into the first drying tower 511 for adsorption and drying.

[0075] The dried hydrogen gas then enters the buffer tank 56 through the third four-way valve 59, and flows into the filling process through the buffer tank 56 for filling.

[0076] When the first drying tower 511 is in the regeneration state and the second drying tower 512 is in the drying state, the above steps can be reversed.

[0077] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A deoxygenation isobaric drying system, comprising a deoxygenation tower (2), characterized in that: The deoxygenation tower (2) is provided with a support plate (23), which is located in the middle of the deoxygenation tower (2). Separation components (24) are provided on both sides of the support plate (23). The separation components (24) and the support plate (23) are used together to separate multiple reaction chambers (25) in the deoxygenation tower (2). A gas channel (231) is provided on the support plate (23). The gas channel (231) is used to connect the adjacent reaction chambers (25) located on both sides of the support plate (23). The gas channel (231) is filled with a deoxygenation catalyst (26). The separation component (24) includes a separation plate (241) and a baffle plate (242). Multiple separation plates (241) and baffle plates (242) are provided. The separation plates (241) and baffle plates (242) are respectively provided on the support plate (23). The separation plates (241) are staggered on both sides of the support plate (23). The baffle plates (242) correspond one-to-one with the separation plates (241) and are spaced apart. The air passage (231) is located between the baffle plates (242) and the separation plates (241). The baffle plates (242) are used to separate moisture in the gas. The deoxygenation tower (2) is provided with a movable component (28). A chute (27) is provided in the deoxygenation tower (2) along its own height direction. The chute (27) is located near the partition plate (241) and away from the support plate (23). The chute (27) is connected to the reaction chamber (25). The movable component (28) is inserted into the chute (27). The partition plate (241) and the baffle plate (242) are inclined towards the bottom of the deoxygenation tower (2). The end of the partition plate (241) away from the support plate (23) is connected to the movable component (28). The movable component (28) is used to guide the water on the partition plate (241) to the bottom of the deoxygenation tower (2). The movable component (28) includes a movable plate (281), which is inserted into the chute (27). A first guide channel (2811) is provided on the movable plate (281) along its height direction. The first guide channel (2811) is connected to a plurality of reaction chambers (25) respectively. The first guide channel (2811) is used to guide the water on the partition plate (241) to the bottom of the deoxygenation tower (2). The movable plate (281) is provided with a plurality of second guide channels (2812) communicating with the reaction chamber (25). The plurality of second guide channels (2812) are spaced apart and communicate with the first guide channel (2811) respectively. The width of the second guide channel (2812) is greater than that of the first guide channel (2811). The partition plate (241) is provided with a protrusion (2412) at one end away from the support plate (23). The protrusion (2412) is slidably inserted into the first guide channel (2811) and fits against the inner wall of the first guide channel (2811). The movable plate (281) is provided with a plurality of floats (282) on the side near the partition plate (241). The floats (282) correspond one-to-one with the partition plate (241) and are spaced apart.

2. The deoxidation isobaric drying system according to claim 1, characterized in that: The partition plate (241) is provided with a baffle section (2411) on the side near the baffle plate (242), and the baffle section (2411) is arranged parallel to the baffle plate (242).

3. The deoxidation isobaric drying system according to claim 1, characterized in that: The bottom of the deoxygenation tower (2) is connected to a drainage pipe (29), which is used to drain the water in the deoxygenation tower (2). A solenoid valve (291) is installed on the drainage pipe (29).

4. The deoxidation isobaric drying system according to claim 1, characterized in that: The system includes a crude hydrogen heater (1) and a crude hydrogen cooler (3). The deoxygenation tower (2) is provided with an inlet (21) and an outlet (22). The inlet (21) and the outlet (22) are respectively connected to the reaction chamber (25). The crude hydrogen heater (1) is connected to the inlet (21), and the crude hydrogen cooler (3) is connected to the outlet (22).

5. The deoxidation isobaric drying system according to claim 4, characterized in that: The system includes a filter (4) and a drying unit (5). The filter (4) is connected to the crude hydrogen cooler (3). The drying unit (5) includes a first drying tower (511), a second drying tower (512), a pre-drying tower (52), a water separator (53), a hydrogen heater (54), a hydrogen cooler (55), a buffer tank (56), a first four-way valve (57), a second four-way valve (58), and a third four-way valve (59). The first four-way valve (57) is connected to the filter (4), the hydrogen cooler (55), and the pre-drying tower (59) via pipelines. The drying tower (52) and the second four-way valve (58) are connected. The second four-way valve (58) is connected to the filter (4), the first drying tower (511) and the second drying tower (512) through pipelines. The third four-way valve (59) is connected to the hydrogen heater (54), the buffer tank (56), the first drying tower (511) and the second drying tower (512) through pipelines. The pre-drying tower (52) is connected to the hydrogen heater (54). The water separator (53) is connected to the hydrogen cooler (55) and the filter (4) through pipelines.

6. A deoxidation isobaric drying process, characterized in that, The deoxidation isobaric drying system according to claim 5 includes the following steps: The crude hydrogen gas is fed into the deoxygenation tower (2) through the crude hydrogen heater (1); The deoxygenated hydrogen gas passes through the crude hydrogen cooler (3) and is then introduced into the filter (4); The filtered hydrogen is divided into two paths. One path enters the first drying tower (511) through the second four-way valve (58) for drying, and the other path enters the second drying tower (512) through the first four-way valve (57), the pre-drying tower (52), the hydrogen heater (54), and the third four-way valve (59) in sequence. The second drying tower (512) is then regenerated by hot blowing. The hydrogen then flows out of the second drying tower (512) and passes through the second four-way valve (58), the first four-way valve (57), the hydrogen cooler (55), the water separator (53), and the second four-way valve (58) in sequence before entering the first drying tower (511) for drying. After being dried in the first drying tower (511), the two streams of hydrogen enter the buffer tank (56) through the third four-way valve (59) to complete the purification of hydrogen.

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