Cooling separation device, hydrogen purification unit, and hydrogen production system

Abstract

The utility model provides a cooling separation device, hydrogen purification unit and hydrogen production system, cooling separation device includes cylinder, gas inlet, gas outlet, cooling liquid inlet, cooling liquid outlet and heat exchange pipe. The cylinder is provided with the partition in, and the heat exchange chamber and the gas water separation chamber are formed in the structure in the cylinder, and the gas water separation chamber is arranged below the heat exchange chamber. The gas outlet is communicated with the gas water separation chamber, and the gas outlet is spaced apart from the bottom end of the cylinder. The cooling liquid inlet is communicated with the heat exchange chamber, and the cooling liquid inlet is arranged at the bottom of the heat exchange chamber along the height direction. The cooling liquid outlet is arranged at the side of the cylinder and is communicated with the heat exchange chamber, and the cooling liquid outlet is arranged above the cooling liquid inlet along the height direction and is spaced apart from the top end of the cylinder. The heat exchange pipe is communicated to the gas inlet, and the heat exchange pipe is connected to the partition and is communicated with the gas water separation chamber. According to the cooling separation device of the utility model, the space utilization is higher, and it is favorable to the low cost, small -size development of hydrogen purification technology.

Description

Technical Field

[0001] This utility model relates generally to the technical field of hydrogen production systems, and more specifically to a cooling separation device, a hydrogen purification unit, and a hydrogen production system. Background Technology

[0002] Currently, the mainstream hydrogen production methods include alkaline water electrolysis (ALK) and proton exchange membrane (PEM) hydrogen production. From the perspective of hydrogen post-treatment process flow, both are divided into two processing units: separation and purification. The hydrogen post-treatment process flow is briefly described as follows: Hydrogen is first produced from the cathode of the front-end electrolyzer and then proceeds to the separation unit. After gas-liquid separation, washing, cooling, and gas-water separation, it reaches the purification unit. In the purification unit, low-temperature saturated hydrogen first undergoes trace oxygen removal in a deoxygenator, followed by cooling in a heat exchanger, gas-water separation, drying to remove water, and finally, meeting the required standards, it is delivered to the user.

[0003] In this case, the cooling and gas-liquid separation in the small standard hydrogen purification unit is mostly achieved by using a heat exchanger plus a gas-liquid separator. Although the gas-liquid separation effect is achieved, it increases the equipment investment and pipeline usage of the purification unit, resulting in low space utilization and hindering the development of hydrogen purification technology towards low cost and miniaturization. Utility Model Content

[0004] The utility model description section introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This utility model description section is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, the first aspect of this utility model provides a cooling separation device, the cooling separation device comprising: A cylindrical body extends along the height direction of the cooling separation device. A partition plate is provided inside the cylindrical body to form a heat exchange chamber and a gas-water separation chamber inside the cylindrical body. The gas-water separation chamber is located below the heat exchange chamber. A gas inlet is provided at the top of the cylinder. A gas outlet is provided on the side of the cylinder and communicates with the gas-water separation chamber, and the gas outlet is spaced apart from the bottom end of the cylinder along the height direction; A coolant inlet is provided on the side of the cylinder and communicates with the heat exchange chamber. The coolant inlet is arranged at the bottom of the heat exchange chamber along the height direction. A coolant outlet is provided on the side of the cylinder and communicates with the heat exchange chamber. The coolant outlet is arranged along the height direction above the coolant inlet and spaced apart from the top of the cylinder. A heat exchange tube, the first end of which is connected to the gas inlet, and the second end of which is connected to the partition plate and communicates with the gas-water separation chamber.

[0006] According to the cooling separation device of the first aspect of this utility model, hydrogen gas enters the heat exchange tube from the gas inlet, and coolant enters the heat exchange chamber from the coolant inlet and exits the heat exchange chamber from the coolant outlet, thus continuously circulating and cooling the hydrogen gas in the heat exchange tube. After being cooled by heat exchange, the hydrogen gas enters the gas-water separation chamber through the partition plate for gas-water separation. The condensate accumulates at the bottom of the gas-water separation chamber, and the hydrogen gas after water separation is output through the gas outlet, thereby realizing the cooling heat exchange and gas-water separation of hydrogen gas. Therefore, the cooling separation device of this utility model integrates cooling heat exchange and gas-water separation into one unit, reducing the investment in purification equipment and the amount of connecting pipes used, resulting in higher space utilization and facilitating the low-cost and miniaturized development of hydrogen purification technology.

[0007] Optionally, the cooling separation device further includes a first baffle, the first end of which is connected to the inner wall of the gas-water separation chamber and arranged above the gas outlet along the height direction, the second end of which is spaced apart from the gas outlet along the horizontal direction of the cooling separation device and extends below the gas outlet along the height direction; the second end of the heat exchange tube and the gas outlet are respectively disposed on both sides of the first baffle.

[0008] Optionally, the first baffle includes a vertical baffle and an inclined baffle, the inclined baffle being set at an angle to the height direction, and the vertical baffle being parallel to the height direction; the inclined baffle is respectively connected to the inner wall of the gas-water separation chamber and the vertical baffle, and the vertical baffle is spaced apart from the inner wall of the gas-water separation chamber.

[0009] Optionally, the angle between the inclined baffle and the height direction is greater than 0° and less than 90°.

[0010] Optionally, the cooling separation device further includes a droplet trap, which is disposed at the gas outlet.

[0011] Optionally, the cooling separation device further includes a second baffle plate disposed in the heat exchange cavity. The second baffle plate is connected to the inner wall of one side of the heat exchange cavity along the horizontal direction of the cooling separation device and is spaced apart from the inner wall of the other side of the heat exchange cavity, thereby forming a tortuous channel for coolant to pass through between the second baffle plate and the heat exchange cavity.

[0012] Optionally, the cooling separation device further includes a spacer tube that extends along the height direction and passes through the second baffle plate, and the spacer tube is fixedly connected to the second baffle plate and the partition plate.

[0013] Optionally, the cooling separation device further includes a condensate outlet and a level gauge. The condensate outlet is located at the bottom end of the cylinder and communicates with the gas-water separation chamber. The first interface of the level gauge is located at the condensate outlet, and the second interface of the level gauge is located on the side of the cylinder and is arranged along the height direction between the bottom end of the cylinder and the partition plate.

[0014] A second aspect of this invention provides a hydrogen purification unit, including the cooling and separation device described above.

[0015] According to the hydrogen purification unit of the second aspect of this utility model, cooling heat exchange and gas-water separation are integrated into one unit, which reduces the amount of equipment and connecting pipes used in the purification unit, resulting in higher space utilization and facilitating the low-cost and miniaturized development of hydrogen purification technology.

[0016] A third aspect of this invention provides a hydrogen production system, including the hydrogen purification unit as described above.

[0017] The hydrogen production system according to the third aspect of this utility model reduces the amount of equipment and connecting pipes used, has high space utilization, and is conducive to cost reduction and miniaturization.

[0018] The beneficial effects of this application include at least the following: reducing the amount of purification equipment and connecting pipes used, resulting in higher space utilization and facilitating the low-cost and miniaturized development of hydrogen purification technology. Attached Figure Description

[0019] The following drawings, which illustrate embodiments of the present invention, are incorporated herein as part of the present invention for understanding the invention. The drawings show embodiments of the present invention and their descriptions, serving to explain the principles of the present invention. In the drawings, Figure 1 This is an internal schematic diagram of the cooling separation device according to a preferred embodiment of the present invention, viewed from a second horizontal direction; and Figure 2 This is a schematic diagram of the interior of the gas-water separation chamber from the perspective of the first horizontal direction.

[0020] Explanation of reference numerals in the attached figures 100: Cylinder body; 101: Divider plate 102: Heat exchange chamber; 103: Gas-water separation chamber 104: Top partition; 105: Air intake chamber 110: Gas inlet 111: Gas outlet 120: Coolant inlet; 121: Coolant outlet 130: Heat exchange tube; 140: First baffle plate 141: Vertical baffle 142: Inclined baffle 150: Droplet trap; 160: Second deflector baffle 161: Bend channel; 170: Spacer tube 180: Condensate outlet; 181: First interface 182: Second Interface D1: Height Direction D2: First horizontal direction; D3: Second horizontal direction Detailed Implementation

[0021] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that embodiments of the present invention may be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with embodiments of the present invention.

[0022] In this document, ordinal numbers such as "first" and "second" used in this invention are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term "first component" does not imply the existence of "second component," and the term "second component" does not imply the existence of "first component."

[0023] In this article, terms such as "up," "down," "front," "back," "left," and "right" are used only to indicate the relative positional relationship between related parts, rather than to define the absolute position of these related parts.

[0024] In this document, terms such as “equal” and “same” are not strict mathematical and / or geometric limitations, but also include errors that are understandable to those skilled in the art and permissible in manufacturing or use.

[0025] Unless otherwise stated, the numerical ranges in this document include not only the entire range within its two endpoints, but also the subranges contained therein.

[0026] Figure 1 and Figure 2A cooling separation device is shown, comprising a cylindrical body 100, a gas inlet 110, a gas outlet 111, a coolant inlet 120, a coolant outlet 121, and a heat exchange tube 130. The cylindrical body 100 extends along the height direction D1 of the cooling separation device. A partition plate 101 is provided inside the cylindrical body 100, thereby forming a heat exchange chamber 102 and a gas-liquid separation chamber 103 within the cylindrical body 100. The gas-liquid separation chamber 103 is located below the heat exchange chamber 102. The gas inlet 110 is located at the top of the cylindrical body 100. The gas outlet 111 is located on the side of the cylindrical body 100 and communicates with the gas-liquid separation chamber 103, and is spaced apart from the bottom of the cylindrical body 100 along the height direction D1. The coolant inlet 120 is located on the side of the cylindrical body 100 and communicates with the heat exchange chamber 102, and is located at the bottom of the heat exchange chamber 102 along the height direction D1. The coolant outlet 121 is located on the side of the cylinder 100 and communicates with the heat exchange chamber 102. The coolant outlet 121 is arranged along the height direction D1 above the coolant inlet 120 and spaced apart from the top of the cylinder 100.

[0027] The first end of the heat exchange tube 130 is connected to the gas inlet 110, and the second end of the heat exchange tube 130 is connected to the partition plate 101 and communicates with the gas-water separation chamber 103.

[0028] According to the cooling separation device of this invention, hydrogen gas enters the heat exchange tube 130 through the gas inlet 110, and coolant enters the heat exchange chamber 102 through the coolant inlet 120 and exits the heat exchange chamber 102 through the coolant outlet 121, thus continuously circulating and cooling the hydrogen gas in the heat exchange tube 130. The cooled hydrogen gas then enters the gas-water separation chamber 103 through the partition plate 101 for gas-water separation. Condensate accumulates at the bottom of the gas-water separation chamber 103, and the hydrogen gas after water separation is output through the gas outlet 111, thereby achieving both cooling heat exchange and gas-water separation of the hydrogen gas. Therefore, the cooling separation device of this invention integrates cooling heat exchange and gas-water separation into one unit, reducing the investment in purification equipment and the amount of connecting pipes, resulting in higher space utilization and facilitating the low-cost and miniaturized development of hydrogen purification technology.

[0029] The structure of the heat exchange and cooling section of the cooling separation device will be described below with reference to the accompanying drawings.

[0030] According to some specific embodiments of this utility model, refer to Figure 1The cylinder 100 also includes a top baffle 104, which is positioned above the partition plate 101 along the height direction D1. The top baffle 104, partition plate 101, and inner wall of the cylinder 100 together form a heat exchange chamber 102. The top baffle 104 and the inner surface of the top of the cylinder 100 together form an air inlet chamber 105. A gas inlet 110 communicates with the air inlet chamber 105. The first end of the heat exchange tube 130 passes through the top baffle 104 and communicates with the air inlet chamber 105, allowing hydrogen entering the cylinder 100 to be transferred to the heat exchange tube 130 for cooling and heat exchange within the heat exchange chamber 102. The heat exchange tube 130 may not be a straight tube; it may have an extension section deviating from the height direction D1 within the heat exchange chamber 102, thereby increasing the extension length of the heat exchange tube 130 within the heat exchange chamber 102 and ensuring the heat exchange and cooling efficiency of the hydrogen.

[0031] According to some specific embodiments of this utility model, refer to Figure 1 The cooling separation device also includes a second baffle 160, which is disposed within the heat exchange chamber 102. The second baffle 160 is connected to the inner wall of one side of the heat exchange chamber 102 along the horizontal direction of the cooling separation device and is spaced apart from the inner wall of the other side of the heat exchange chamber 102. This creates a bent channel 161 between the second baffle 160 and the heat exchange chamber 102 for the coolant to pass through. The coolant flowing into the heat exchange chamber 102 from the coolant inlet 120 flows along the bent channel 161 to the coolant outlet 121, thereby increasing the flow path of the coolant within the heat exchange chamber 102 and ensuring more thorough contact between the coolant and the heat exchange tubes 130, thus improving the heat exchange efficiency for hydrogen. Furthermore, since the coolant inlet 120 is lower than the coolant outlet 121, the overall flow direction of the coolant and hydrogen is opposite, further improving the heat exchange efficiency of the coolant for hydrogen.

[0032] For example, the cross-section of the cylinder 100 can be circular, the second baffle 160 is semi-circular, and the cooling separation device includes multiple second baffles 160. The multiple second baffles 160 are arranged at intervals along the height direction D1, and two adjacent second baffles 160 are arranged on both sides of the cylinder 100 along the first horizontal direction D2. This makes the bent channel 161 have a portion that bends left and right along the first horizontal direction D2 in the direction extending upward along the height direction D1, which increases the extension length of the bent channel 161, so that the coolant can fully contact the heat exchange tube 130 in the heat exchange chamber 102, and further improve the heat exchange efficiency of the cooling separation device.

[0033] According to some specific embodiments of this utility model, refer to Figure 1The cooling separation device also includes a spacer tube 170, which extends along the height direction D1 and passes through the second baffle 160. The first end of the spacer tube 170 is connected to the top partition plate 104, and the second end of the spacer tube 170 is connected to the partition plate 101. The spacer tube 170 is fixedly connected to the second baffle 160, which makes the second baffle 160 less prone to deformation along the height direction D1. This also helps to strengthen the overall structural strength of the cylinder 100, prevents the cylinder 100 from deforming too much during heat exchange, and helps to ensure the working stability of the cooling separation device.

[0034] The structure of the gas-water separation section of the cooling separation device will be further described below with reference to the accompanying drawings.

[0035] According to some specific embodiments of this utility model, refer to Figure 1 The cooling separation device also includes a first baffle 140. The first end of the first baffle 140 is connected to the inner wall of the gas-water separation chamber 103 and is positioned above the gas outlet 111 along the height direction D1. The second end of the first baffle 140 is spaced apart from the gas outlet 111 along the horizontal direction (first horizontal direction D2) of the cooling separation device and extends below the gas outlet 111 along the height direction D1. The second end of the heat exchange tube 130 (i.e., the end of the heat exchange tube 130 connected to the partition plate 101 and communicating with the gas-water separation chamber 103) and the gas outlet 111 are respectively located on both sides of the first baffle 140, thereby dividing the gas-water separation chamber 103 into two interconnected regions by the first baffle 140, and the second end of the heat exchange tube 130 and the gas outlet 111 are connected through these two regions. The first baffle 140 separates hydrogen gas from the gas outlet 111 when it enters the gas-liquid separation chamber 103 through the heat exchange tube 130. This divides the space above the liquid level in the gas-liquid separation chamber 103 into two regions. Under constant gas velocity, this increases the turbulence of the gas, accelerates the downward deposition of condensate, and extends the path of hydrogen gas from the second end of the heat exchange tube 130 to the gas outlet 111, reducing the entrainment of condensate droplets by the gas. As a result, the separation effect of hydrogen gas in the gas-liquid separation chamber 103 is better.

[0036] Combination Figure 2 As shown, the first baffle 140 is connected to the inner wall of the cylinder 100 on both sides along the second horizontal direction D3, so that the projection of the second end of the heat exchange tube 130 and the gas outlet 111 along the height direction D1 is completely separated by the first baffle 140, thereby further ensuring the separation effect of hydrogen in the gas-water separation chamber 103.

[0037] According to some specific embodiments of this utility model, refer to Figure 1 and Figure 2The first baffle 140 includes a vertical baffle 141 and an inclined baffle 142. The inclined baffle 142 is set at an angle to the height direction D1, and the vertical baffle 141 is parallel to the height direction D1. The top end of the inclined baffle 142 is connected to the inner wall of the gas-liquid separation chamber 103, and the bottom end of the inclined baffle 142 is connected to the top end of the vertical baffle 141. The vertical baffle 141 is spaced apart from the inner wall of the gas-liquid separation chamber 103, and the bottom end of the vertical baffle 141 extends along the height direction D1 to below the gas outlet 111. The vertical baffle 141 and the inclined baffle 142 are designed to connect the first baffle 140 to the inner wall of the gas-water separation chamber 103 and to separate the first baffle 140 from the gas outlet 111. This allows the internal space of the gas-water separation chamber 103 to be divided. Under constant gas velocity, this further increases the turbulence of the gas, accelerates the downward deposition of condensate, and extends the path of hydrogen from the second end of the heat exchange tube 130 to the gas outlet 111, reducing the entrainment of condensate droplets by the gas. As a result, the separation effect of hydrogen in the gas-water separation chamber 103 is better.

[0038] According to some specific embodiments of this utility model, refer to Figure 1 and Figure 2 The angle between the inclined baffle 142 and the height direction D1 is greater than 0° and less than 90°. This inclined baffle 142 is positioned so that hydrogen entering the gas-liquid separation chamber 103 from the heat exchange tube 130 will not accumulate between the first baffle 140 and the partition plate 101, thus guiding the hydrogen to the gas outlet 111 and reducing noise. Preferably, the angle between the inclined baffle 142 and the height direction D1 is 45°, resulting in a more uniform airflow velocity within the gas-liquid separation chamber 103, which helps reduce noise from the cooling separation device and accelerates gas-liquid separation.

[0039] According to some specific embodiments of this utility model, refer to Figure 1 The cooling separation device also includes a droplet trap 150, which is installed at the gas outlet 111. The droplet trap 150 is preferably of about 100 mesh and welded to the gas outlet 111, thereby intercepting the liquid droplets in the gas for a second time, effectively preventing the liquid droplets from being carried out, thereby further reducing the water content of the hydrogen and reducing the amount of desiccant used in subsequent processes to a certain extent.

[0040] According to some specific embodiments of this utility model, refer to Figure 1The cooling separation device also includes a condensate outlet 180 and a level gauge. The condensate outlet 180 is located at the bottom of the cylinder 100 and communicates with the gas-water separation chamber 103. The first interface 181 of the level gauge is located at the condensate outlet 180, and the second interface 182 of the level gauge is located on the side of the cylinder 100 and is arranged along the height direction D1 between the bottom of the cylinder 100 and the partition plate 101. The condensate outlet 180 allows the cooling separation device to discharge the condensate from the gas-water separation chamber 103, preventing condensate accumulation. The first interface 181 and the second interface 182 are configured to detect the condensate level at the bottom of the cylinder 100, thereby assisting in judging the discharge of condensate and helping to control the condensate level accumulated in the gas-water separation chamber 103. This prevents the condensate level in the gas-water separation chamber 103 from being too high and blocking the space on both sides of the second baffle 160, which would cause gas to enter the condensate and generate bubbles, thus reducing the gas-water separation effect. Furthermore, if the level is too high, as hydrogen enters the space on the side of the second baffle 160 away from the gas outlet 111, the condensate in the space on the side of the second baffle 160 near the gas outlet 111 may rise to the gas outlet 111, which not only reduces the gas-water separation effect of the cooling separation device but also makes it easy for condensate to enter the subsequent process. Optionally, the height of the second interface 182 can be the same as that of the gas outlet 111. When the second interface 182 detects that the condensate level has risen to the height of the gas outlet 111, the relevant control system of the cooling separation device can control the condensate outlet 180 to discharge the condensate. In addition, along the height direction D1, the height of the second interface 182 can also be positioned between the gas outlet 111 and the bottom end of the vertical baffle 141, so as to issue an early warning before the condensate approaches the gas outlet 111, which is beneficial for controlling the condensate level in the gas-water separation chamber 103.

[0041] According to some specific embodiments of this utility model, refer to Figure 1 The height of the partition plate 101 along the height direction D1 to the bottom of the cylinder 100 is h1, and the outer diameter of the cylinder 100 is d. h1 can be configured to be 5 to 10 times d, so that the gas-water separation chamber 103 of the cooling separation device has sufficient volume to ensure the gas-water separation effect of hydrogen and to prevent the height of the cooling separation device from being too high. In addition, the outer diameter d of the cylinder 100 and the height of the partition plate 101 along the height direction D1 to the bottom of the cylinder 100 can be flexibly selected according to the arrangement space of the cooling separation device and the required liquid level of condensate.

[0042] According to some specific embodiments of this utility model, refer to Figure 1The distance from the partition plate 101 to the gas outlet 111 along the height direction D1 is h2. The distance from the welding position of the second baffle 160 to the inner wall of the gas-water separation chamber 103 along the height direction D1 to the partition plate 101 is h3. h3 is configured to be 1 / 6 to 1 / 2 of h2, so that the gas flow rate in the gas-water separation chamber 103 is as uniform as possible, and it is also convenient to weld the second baffle 160.

[0043] According to some specific embodiments of this utility model, refer to Figure 1 The vertical baffle 141 of the second baffle 160 has a dimension D1 along the height direction that is not greater than 1 / 3 of the height h1 of the separator 101 along the height direction D1 to the bottom of the cylinder 100, which helps to prevent the space of the condensate separation gas-water separation chamber 103 located on both sides of the second baffle 160.

[0044] This invention also provides a hydrogen purification unit, including the cooling and separation device described above. The hydrogen purification unit of this invention integrates cooling heat exchange and gas-liquid separation into one unit, reducing the amount of equipment and connecting pipes required in the purification unit, resulting in higher space utilization and facilitating the low-cost and miniaturized development of hydrogen purification technology.

[0045] This invention also provides a hydrogen production system, including the hydrogen purification unit described above. The hydrogen production system of this invention reduces the amount of equipment and connecting pipes required, has high space utilization, and facilitates cost reduction and miniaturization.

[0046] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for descriptive purposes only and is not intended to limit the scope of the invention. Terms such as “set” appearing herein can refer to either a component being directly attached to another component or a component being attached to another component via an intermediary. A feature described in one embodiment may be applied, alone or in combination with other features, to another embodiment, unless that feature is not applicable in that other embodiment or is otherwise stated.

[0047] This utility model has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative purposes only and are not intended to limit this utility model to the described embodiments. Those skilled in the art will understand that many more variations and modifications can be made based on the teachings of this utility model, and all such variations and modifications fall within the scope of protection claimed by this utility model.

Claims

1. A cooling separation device, characterized in that, The cooling separation device includes: A cylindrical body extends along the height direction of the cooling separation device. A partition plate is provided inside the cylindrical body to form a heat exchange chamber and a gas-water separation chamber inside the cylindrical body. The gas-water separation chamber is located below the heat exchange chamber. A gas inlet is provided at the top of the cylinder. A gas outlet is provided on the side of the cylinder and communicates with the gas-water separation chamber, and the gas outlet is spaced apart from the bottom end of the cylinder along the height direction; A coolant inlet is provided on the side of the cylinder and communicates with the heat exchange chamber. The coolant inlet is arranged at the bottom of the heat exchange chamber along the height direction. A coolant outlet is provided on the side of the cylinder and communicates with the heat exchange chamber. The coolant outlet is arranged along the height direction above the coolant inlet and spaced apart from the top of the cylinder. A heat exchange tube, the first end of which is connected to the gas inlet, and the second end of which is connected to the partition plate and communicates with the gas-water separation chamber.

2. The cooling separation device according to claim 1, characterized in that, The cooling separation device further includes a first baffle plate, the first end of which is connected to the inner wall of the gas-water separation chamber and is arranged above the gas outlet along the height direction. The second end of the first baffle plate is spaced apart from the gas outlet along the horizontal direction of the cooling separation device and extends below the gas outlet along the height direction. The second end of the heat exchange tube and the gas outlet are respectively located on both sides of the first baffle plate.

3. The cooling separation device according to claim 2, characterized in that, The first baffle includes a vertical baffle and an inclined baffle. The inclined baffle is set at an angle to the height direction, and the vertical baffle is parallel to the height direction. The inclined baffle is connected to the inner wall of the gas-water separation chamber and the vertical baffle, respectively, and the vertical baffle is spaced apart from the inner wall of the gas-water separation chamber.

4. The cooling separation device according to claim 3, characterized in that, The angle between the inclined baffle and the height direction is greater than 0° and less than 90°.

5. The cooling separation device according to claim 1, characterized in that, The cooling separation device also includes a droplet trapping net, which is installed at the gas outlet.

6. The cooling separation device according to claim 1, characterized in that, The cooling separation device further includes a second baffle plate, which is disposed in the heat exchange cavity. The second baffle plate is connected to the inner wall of one side of the heat exchange cavity along the horizontal direction of the cooling separation device and is spaced apart from the inner wall of the other side of the heat exchange cavity, thereby forming a tortuous channel for the coolant to pass through between the second baffle plate and the heat exchange cavity.

7. The cooling separation device according to claim 6, characterized in that, The cooling separation device further includes a fixed-distance tube, which extends along the height direction and passes through the second baffle. The fixed-distance tube is fixedly connected to the second baffle and the partition plate.

8. The cooling separation device according to claim 1, characterized in that, The cooling separation device further includes a condensate outlet and a level gauge. The condensate outlet is located at the bottom end of the cylinder and communicates with the gas-water separation chamber. The first interface of the level gauge is located at the condensate outlet, and the second interface of the level gauge is located on the side of the cylinder and is arranged along the height direction between the bottom end of the cylinder and the partition plate.

9. A hydrogen purification unit, characterized in that, Includes the cooling separation device according to any one of claims 1 to 8.

10. A hydrogen production system, characterized in that, Includes the hydrogen purification unit according to claim 9.

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