Washing, separating and cooling device and water electrolysis hydrogen production system

Abstract

The utility model discloses a washing, separating and cooling device and a water electrolysis hydrogen production system. The washing, separating and cooling device is connected to a hydrogen production electrolytic bath and comprises a shell, a snake-shaped cooling pipe and a bubbler. The upper part of the shell is provided with a demineralized water inlet and a gas outlet, and the lower part is provided with a raw material liquid inlet and an alkali liquor outlet. The S-shaped cooling pipe extends in the height direction and is arranged on the outer wall of the shell in a surrounding mode. The bubbler is disposed at a lower portion in the interior space of the housing. And the bubbler is connected to the raw material liquid inlet and is positioned above the alkali liquid outlet. According to the washing, separating and cooling device disclosed by the utility model, the functions of gas washing, gas-liquid separating and cooling are integrated in the same internal space of the same shell, and the S-shaped cooling pipe is arranged on the outer wall of the shell, so that the space occupation of the whole device is reduced, the internal space occupation of the shell is reduced, and the gas escape efficiency is improved; the use of pipelines is reduced, the problem of product waste caused by retention of gas or liquid in the pipelines is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of alkaline water electrolysis hydrogen production, in particular to a washing, separation and cooling device and a water electrolysis hydrogen production system. Background Art

[0002] In the prior art, separation of alkaline gas and liquid to obtain gas (hydrogen or oxygen) products often requires three process steps of washing, cooling and separation. The three process steps of washing, cooling and separation are performed in three or two separate or simply stacked equipment spaces. The equipment is connected by pipelines, which makes the entire device complicated and large-scale, occupies a large space and has a high manufacturing cost. At the same time, the gas or liquid retained in the pipeline leads to product waste.

[0003] Therefore, a washing, separation and cooling device and a water electrolysis hydrogen production system are needed to at least partially solve the above problems. Utility Model Content

[0004] A series of simplified concepts are introduced in the utility model content section, which will be further described in detail in the detailed implementation section. The utility model content section of the utility model does not mean to attempt to define the key features and essential technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection.

[0005] In order to at least partially solve the above problems, the first aspect of the present invention provides a washing, separation and cooling device for connecting to a hydrogen production electrolyzer. The washing, separation and cooling device comprises:

[0006] A shell, wherein the upper portion of the shell is provided with a deionized water inlet and a gas outlet, and the lower portion of the shell is provided with a raw material liquid inlet and an alkali liquid outlet, wherein the raw material liquid inlet is located above the alkali liquid outlet;

[0007] a serpentine cooling pipe extending in a height direction and surrounding an outer wall of the housing; and

[0008] A bubbler is disposed in the lower part of the inner space of the shell, the bubbler is connected to the raw liquid inlet, and the bubbler is located above the alkali liquid outlet.

[0009] According to the washing, separation and cooling device of the utility model, the gas washing, gas-liquid separation and cooling functions are integrated in the same internal space of the same shell, and the serpentine cooling pipe is arranged on the outer wall of the shell, thereby reducing the space occupied by the overall device, reducing the space occupied by the internal space of the shell, improving the gas escape efficiency, reducing the use of pipelines, reducing the problem of product waste caused by gas or liquid retained in the pipeline, and having a compact structure and reducing production costs.

[0010] Optionally, the bubbler is configured to be arc-shaped, and the arc-shaped configuration is configured to extend along the inner wall of the shell; and / or

[0011] The washing, separation and cooling device further comprises a demister, which is arranged below the gas outlet, and the periphery of the demister is sealed with the inner wall of the shell.

[0012] Optionally, the shell includes a cylinder, an upper head and a lower head, the upper cylinder opening of the cylinder is closed via the upper head, and the lower cylinder opening of the cylinder is closed via the lower head.

[0013] Optionally, the upper and lower ends of the serpentine cooling pipe respectively have a cooling water outlet and a cooling water inlet, and the dimension of the serpentine cooling pipe in the height direction is the same as the dimension of the cylinder in the height direction.

[0014] Optionally, a first liquid level gauge interface is provided at the lower portion of the shell, and a second liquid level gauge interface is provided at the upper portion of the shell.

[0015] Optionally,

[0016] The shell is also provided with an overflow port, and the overflow port is arranged in the middle of the cylinder.

[0017] Optionally,

[0018] The inner space of the shell is filled with a filler, and the filler is provided with gaps connected in the height direction; and / or

[0019] A tower plate is arranged in the inner space of the shell, the tower plate is connected to the inner wall of the shell, and the tower plate has a flat plate portion extending in a horizontal direction and protruding upward to form an overflow weir.

[0020] Optionally,

[0021] The upper portion of the housing is also provided with a nitrogen inlet; and / or

[0022] A hand hole is also provided on the upper portion of the shell, and a hand hole blind plate is pressed and provided on the top end of the hand hole.

[0023] Optionally,

[0024] The washing, separating and cooling device further comprises at least two legs, wherein the legs are connected to the bottom of the shell, and a reinforcement is connected between the legs; and / or

[0025] The bottom of the shell is provided with a thermometer interface, and the upper part of the shell is provided with a pressure gauge interface and a spare port.

[0026] The second aspect of the utility model provides a water electrolysis hydrogen production system, comprising:

[0027] Electrolyzers for hydrogen production; and

[0028] According to the washing, separation and cooling device of any of the above schemes, the raw liquid inlet of the washing, separation and cooling device is connected to the cathode side and / or the anode side of the hydrogen production electrolyzer.

[0029] The water electrolysis hydrogen production system according to the second aspect of the utility model can achieve a technical effect similar to that of the washing, separation and cooling device of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The following drawings of the present invention are used as a part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principle of the present invention.

[0031] In the attached figure:

[0032] Figure 1 It is a front view of a washing, separation and cooling device according to an embodiment of the utility model;

[0033] Figure 2 for Figure 1 a schematic top view of

[0034] Figure 3 for Figure 1 Another top view of .

[0035] Description of reference numerals:

[0036] 100: washing, separation and cooling device 110: housing

[0037] 111: Desalted water inlet 112: Gas outlet

[0038] 113: Raw material liquid inlet 114: Alkaline liquid outlet

[0039] 115: Shell 116: Upper head

[0040] 117: Lower head 118: First level gauge interface

[0041] 119: Second liquid level gauge interface 121: Nitrogen inlet

[0042] 122: Hand hole 123: Hand hole blind plate

[0043] 124: Thermometer interface 125: Pressure gauge interface

[0044] 126: Spare port 130: Serpentine cooling pipe

[0045] 131: Cooling water outlet 132: Cooling water inlet

[0046] 140: Bubbler 151: Legs

[0047] 152: Reinforcement 160: Shell DETAILED DESCRIPTION

[0048] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0049] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of the features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0050] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component". It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inner", "outer" and similar expressions used in this document are for illustrative purposes only and are not limiting.

[0051] Now, exemplary embodiments according to the present invention will be described in more detail with reference to the accompanying drawings.

[0052] Figures 1 to 3 A washing, separation and cooling device 100 according to the first aspect of the utility model is shown, which is used to be connected to a hydrogen production electrolyzer. The washing, separation and cooling device 100 includes a shell 110, a serpentine cooling tube 130 and a bubbler 140. The upper portion of the shell 110 is provided with a deionized water inlet 111 and a gas outlet 112, and the lower portion of the shell 110 is provided with a raw liquid inlet 113 and an alkali liquid outlet 114, and the raw liquid inlet 113 is located above the alkali liquid outlet 114. The serpentine cooling tube 130 extends in the height direction and is surrounded by the outer wall of the shell 110. The bubbler 140 is arranged at the lower portion in the internal space of the shell 110, and the bubbler 140 is connected to the raw liquid inlet 113, and the bubbler 140 is located above the alkali liquid outlet 114.

[0053] According to the washing, separation and cooling device of the utility model, the gas washing, gas-liquid separation and cooling functions are integrated in the same internal space of the same shell, and the serpentine cooling pipe is arranged on the outer wall of the shell, thereby reducing the space occupied by the overall device, reducing the space occupied by the internal space of the shell, improving the gas escape efficiency, reducing the use of pipelines, reducing the problem of product waste caused by gas or liquid retained in the pipeline, and having a compact structure and reducing production costs.

[0054] refer to Figure 1 According to the first aspect of the utility model, the washing and separation cooling device 100 can be connected to the cathode side of the hydrogen production electrolyzer so that the gas-carrying liquid on the cathode side flows into the washing and separation cooling device 100 as the raw liquid, or connected to the anode side of the hydrogen production electrolyzer so that the gas-carrying liquid on the anode side flows into the washing and separation cooling device 100 as the raw liquid.

[0055] The washing, separation and cooling device 100 includes a shell 110, a serpentine cooling pipe 130 and a bubbler 140. The shell 110 may include a cylinder 115, an upper head 116 and a lower head 117 connected in sequence in the height direction, the upper cylinder mouth of the cylinder 115 is closed by the upper head 116, and the lower cylinder mouth of the cylinder 115 is closed by the lower head 117, thereby enclosing the internal space of the shell 110.

[0056] refer to Figure 1 , Figure 2 and Figure 3 The upper end cap 116 may be provided with a desalted water inlet 111, a gas outlet 112, a nitrogen inlet 121, a hand hole 122, a pressure gauge interface 125 and a spare port 126. The desalted water inlet 111, the gas outlet 112, the nitrogen inlet 121, the hand hole 122, the pressure gauge interface 125 and the spare port 126 are all connected to the internal space of the shell 110. The desalted water inlet 111 is used to introduce desalted water for desalination into the interior of the shell 110. The desalted water can be pure water. The soluble salt ions in the raw material liquid and the gas can be dissolved in water without polluting the alkali solution. The gas outlet 112 is used for the escape of the gas after washing, cooling and separation to produce gas (such as hydrogen or oxygen). The nitrogen inlet 121 is used to introduce nitrogen for purging and replacement. The hand hole 122 can be set at the top of the upper end cap 116 for subsequent inspection and maintenance. The top of the hand hole 122 can be provided with a hand hole blind plate 123. The pressure gauge interface 125 is used to connect a pressure gauge to facilitate pressure detection. The spare port 126 can meet other functional requirements of the user.

[0057] The upper part of the cylinder 115 may be provided with a second liquid level gauge interface 119. The lower part of the shell 110 is provided with a first liquid level gauge interface 118, which may be specifically provided at the lower end cap 117 or the lower part of the cylinder 115. The second liquid level gauge interface 119 and the first liquid level gauge interface 118 are used to connect a liquid level gauge to understand the liquid level change of the liquid in the internal space of the shell 110. Generally, the liquid level in the internal space of the shell 110 is controlled at about half the height of the cylinder 115. The shell 110 may also be provided with an overflow port to facilitate the control of the liquid level height inside the shell 110. The overflow port can be arranged above the first liquid level gauge interface 118, and the overflow port can be arranged in the middle of the cylinder 115. Preferably, the overflow port can be roughly arranged at about half of the height of the cylinder 115, so as to be suitable for controlling the liquid level in the internal space of the shell 110 at about half of the height of the cylinder 115, so that the washing, separation and cooling device 100 can achieve better gas washing, gas-liquid separation and cooling effects.

[0058] The lower part of the cylinder 115 may be provided with a raw liquid inlet 113, which is connected to the internal space of the shell 110 via a bubbler 140. The raw liquid inlet 113 is used to receive the gas-carrying liquid from the cathode side of the hydrogen production electrolyzer or the gas-carrying liquid from the anode side of the hydrogen production electrolyzer as the raw liquid. The gas-carrying liquid from the cathode side of the hydrogen production electrolyzer may be an alkaline liquid carrying hydrogen. The gas-carrying liquid from the anode side of the hydrogen production electrolyzer may be an alkaline liquid carrying oxygen. The raw liquid may be pumped into the raw liquid inlet 113 via a circulation pump.

[0059] The lower end cap 117 may be provided with an alkali solution outlet 114 and a thermometer interface 124. The alkali solution outlet 114 may be located at the lowermost portion of the lower end cap 117, and the alkali solution outlet 114 is connected to the inner space of the housing 110. Deionized water flows into the inner space of the housing 110 to wash the gas-carrying liquid, and the gas escapes upward. The washing liquid (including the deionized water and the alkali solution in the raw material liquid) is discharged from the inner space of the housing 110 from the alkali solution outlet 114, and the washing liquid may flow back to the hydrogen production electrolyzer. The thermometer interface 124 may be used to connect a thermometer to conveniently understand the temperature of the liquid inside the housing 110.

[0060] It can be understood that the aforementioned desalted water inlet 111, gas outlet 112, nitrogen inlet 121, pressure gauge interface 125, spare port 126, second liquid level gauge interface 119, first liquid level gauge interface 118, raw liquid inlet 113, alkali liquid outlet 114, thermometer interface 124, overflow port, etc. are only restricted in the height direction, and the relative position or relative angle in the horizontal direction is generally not specifically limited.

[0061] As a result, the gas washing, gas-liquid separation and cooling functions are integrated into the same internal space of the same shell 110, which reduces the space occupied by the overall device, reduces the use of pipelines, reduces product waste caused by gas or liquid retained in the pipeline, and reduces production costs.

[0062] Continue to refer Figure 1 The serpentine cooling pipe 130 extends in the height direction and surrounds the outer wall of the shell 110, and can be specifically surrounded by the outer wall of the cylinder 115. The size of the serpentine cooling pipe 130 in the height direction can be the same as the size of the cylinder 115 in the height direction, thereby making the total length of the serpentine cooling pipe 130 longer, thereby ensuring the cooling effect of the serpentine cooling pipe 130. The upper and lower ends of the serpentine cooling pipe 130 can respectively correspond to a cooling water outlet 131 and a cooling water inlet 132. The cooling water flows in from the cooling water inlet 132 located at the lower end of the serpentine cooling pipe 130, rises around the outer wall of the cylinder 115 in the internal space of the serpentine cooling pipe 130 to the cooling water outlet 131 and flows out, countercurrent heat exchange ensures the cooling effect. Setting the serpentine cooling pipe 130 to the outer wall of the shell 110 reduces the space occupied by the overall device, reduces the space occupied by the internal space of the shell 110, and improves the gas escape efficiency. In some embodiments, the washing separation cooling device 100 may further include a housing 160 , which is disposed on the outside of the serpentine cooling pipe 130 to protect the serpentine cooling pipe 130 and improve the aesthetics.

[0063] The raw material liquid enters the bubbler 140 through the raw material liquid inlet 113. The bubbler 140 has a bubbling function to achieve a washing function. The gas overflows from the hole of the bubbler 140 and contacts the desalted water entering from the desalted water inlet 111 provided in the upper head 116. The desalted water washes and desalinates the gas. The gas continues to rise and escapes, and finally escapes from the gas outlet 112 provided in the upper head 116. In some embodiments, the bubbler 140 can be configured as an arc, and the arc structure is extended along the inner wall of the housing 110. Compared with the bubbler 140 configured as a straight tube, the arc-shaped bubbler 140 can be provided with more holes, thereby increasing the contact area with the desalted water (for desalination) and achieving a better desalination effect.

[0064] In some embodiments, the washing separation cooling device 100 may not include components such as a demister disposed in the internal space of the housing 110, so as not to affect the gas escape efficiency. In some other embodiments, the washing separation cooling device 100 may include a demister for capturing liquid in the gas escaping to the demister, and the demister may be disposed in the internal space of the housing 110. Specifically, the demister may be disposed at the gas outlet 112, and the periphery of the demister may be sealed with the inner wall of the housing 110 via a baffle, etc., to better capture the liquid in the gas. The demister may be disposed below the desalted water inlet 111, and the desalted water flowing in from the desalted water inlet 111 may be sprayed onto the demister to wash the liquid captured on the demister.

[0065] In some embodiments, the internal space of the shell 110 may not be filled with fillers, and no tower plates are provided, so that the structure of the internal space of the shell 110 is simple to prevent the complex internal structure from affecting the gas escape efficiency. In some other embodiments, the internal space of the shell 110 may be filled with fillers, and gaps connected in the height direction are provided in the fillers. Preferably, the gaps may also include multiple longitudinal, transverse and oblique interlaced gaps, so as to increase the contact mass transfer between the desalted water and the gas in the gaps, thereby increasing the flow stroke and contact area of ​​the desalted water and the gas, improving the washing effect, and effectively reducing the entrainment of alkali solution in the gas. In some other embodiments, a tower plate may be provided in the internal space of the shell 110, and the tower plate is connected to the inner wall of the shell 110, and the tower plate has a flat plate portion, which extends in the horizontal direction and bulges upward to form an overflow weir. The overflow weir forms a liquid seal layer on the tower plate, so that the gas bubbles up, and the desalted water flows down from the edge of the overflow weir, forming a relatively uniform water curtain, effectively increasing the gas-liquid contact area, thereby improving the washing effect, and effectively reducing the entrainment of alkali solution in the gas.

[0066] In some embodiments, the washing, separation and cooling device 100 may further include at least two legs 151, the legs 151 are connected to the bottom of the shell 110, and a reinforcing member 152 is connected between the legs 151 to enhance the supporting effect. The legs 151 can be used to make the liquid level inside the shell 110 higher than the hydrogen production electrolyzer, and optionally, the alkali liquid outlet 114 disposed at the bottom of the shell 110 can be located above the hydrogen production electrolyzer, so that the washing liquid can conveniently flow back to the hydrogen production electrolyzer.

[0067] The second aspect of the present invention provides a water electrolysis hydrogen production system, including a hydrogen production electrolyzer and a washing, separation and cooling device 100 according to the first aspect of the present invention. The raw liquid inlet 113 of the washing, separation and cooling device 100 is connected to the cathode side and / or the anode side of the hydrogen production electrolyzer. In some embodiments, the raw liquid inlet 113 of the washing, separation and cooling device 100 can be connected to the cathode side of the hydrogen production electrolyzer so that the gas-carrying liquid on the cathode side flows into the washing, separation and cooling device 100 as a raw liquid, and the washing, separation and cooling device 100 is used to wash, separate and cool the gas-carrying liquid from the cathode side, produce hydrogen products and recover the alkaline liquid on the cathode side. In some other embodiments, the raw liquid inlet 113 of the washing, separation and cooling device 100 can be connected to the anode side of the hydrogen production electrolyzer so that the gas-carrying liquid on the anode side flows into the washing, separation and cooling device 100 as a raw liquid, and the washing, separation and cooling device 100 is used to wash, separate and cool the gas-carrying liquid from the anode side, produce oxygen products and recover the alkaline liquid on the anode side.

[0068] The water electrolysis hydrogen production system according to the second aspect of the utility model can achieve the technical effect similar to the washing, separation and cooling device 100 of the first aspect. It can be understood that the water electrolysis hydrogen production system according to the utility model includes all the features and effects of the washing, separation and cooling device 100 according to the utility model.

[0069] Unless otherwise defined, the technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art of the present invention. The terms used herein are only for describing specific implementation purposes and are not intended to limit the present invention. The features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise specified in the other embodiment.

[0070] The present invention has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of example and explanation, and the present invention is not limited to the above-mentioned embodiments. According to the teachings of the present invention, more variations and modifications can be made, and these variations and modifications all fall within the scope of protection required by the present invention.

Claims

1. A washing, separation and cooling device for connecting to a hydrogen production electrolyzer, characterized in that: The washing, separation and cooling device comprises: A shell, wherein the upper portion of the shell is provided with a deionized water inlet and a gas outlet, and the lower portion of the shell is provided with a raw material liquid inlet and an alkali liquid outlet, wherein the raw material liquid inlet is located above the alkali liquid outlet; a serpentine cooling pipe extending in a height direction and surrounding an outer wall of the housing; and A bubbler is disposed in the lower part of the inner space of the shell, the bubbler is connected to the raw liquid inlet, and the bubbler is located above the alkali liquid outlet.

2. The washing, separation and cooling device according to claim 1, characterized in that: The bubbler is configured to be arc-shaped, and the arc-shaped configuration is configured to extend along the inner wall of the shell; and / or The washing, separation and cooling device further comprises a demister, which is arranged below the gas outlet, and the periphery of the demister is sealed with the inner wall of the shell.

3. The washing, separation and cooling device according to claim 1, characterized in that: The shell comprises a cylinder, an upper sealing head and a lower sealing head. The upper cylinder opening of the cylinder is closed via the upper sealing head, and the lower cylinder opening of the cylinder is closed via the lower sealing head.

4. The washing, separation and cooling device according to claim 3, characterized in that: The upper and lower ends of the serpentine cooling pipe are respectively provided with a cooling water outlet and a cooling water inlet, and the dimension of the serpentine cooling pipe in the height direction is the same as the dimension of the cylinder in the height direction.

5. The washing, separation and cooling device according to claim 1, characterized in that: The lower part of the shell is provided with a first liquid level gauge interface, and the upper part of the shell is provided with a second liquid level gauge interface.

6. The washing, separation and cooling device according to claim 5, characterized in that: The shell comprises a cylinder, an upper head and a lower head. The shell is also provided with an overflow port, and the overflow port is arranged in the middle of the cylinder.

7. The washing, separation and cooling device according to any one of claims 1 to 6, characterized in that: The inner space of the shell is filled with a filler, and the filler is provided with gaps connected in the height direction; and / or A tower plate is arranged in the inner space of the shell, the tower plate is connected to the inner wall of the shell, and the tower plate has a flat plate portion extending in a horizontal direction and protruding upward to form an overflow weir.

8. The washing, separation and cooling device according to any one of claims 1 to 6, characterized in that: The upper portion of the housing is also provided with a nitrogen inlet; and / or A hand hole is also provided on the upper portion of the shell, and a hand hole blind plate is pressed and provided on the top end of the hand hole.

9. The washing, separation and cooling device according to any one of claims 1 to 6, characterized in that: The washing, separating and cooling device further comprises at least two legs, wherein the legs are connected to the bottom of the shell, and a reinforcement is connected between the legs; and / or The bottom of the shell is provided with a thermometer interface, and the upper part of the shell is provided with a pressure gauge interface and a spare port.

10. A system for producing hydrogen by electrolysis of water, characterized in that: include: Hydrogen production electrolyzer; as well as According to any one of claims 1 to 9, the raw liquid inlet of the washing, separation and cooling device is connected to the cathode side and / or the anode side of the hydrogen production electrolyzer.

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