Novel electrolytic bath and separation device

Abstract

The utility model relates to a novel electrolytic bath and a separating device, comprising an electrolytic bath used for electrolyzing water to generate hydrogen and oxygen; a hydrogen and alkali liquor mixture electrolyzed in the electrolytic bath enters the seal head I through a pipeline I for gas-liquid separation; a mixture of oxygen and alkali liquor electrolyzed in the electrolytic bath enters the seal head II through a pipeline II for gas-liquid separation; an interface 1; an interface II; alkali liquor separated in the first sealing head passes through the first connector and is conveyed back into the electrolytic bath through the liquid inlet under the condition that the circulating pump provides power, and alkali liquor separated in the second sealing head passes through the second connector and is conveyed back into the electrolytic bath through the liquid inlet under the condition that the circulating pump provides power. According to the novel electrolytic bath and the separating device, the end pressing plates on the two sides of the electrolytic bath are changed into the sealing head structures, a gas and alkali liquor mixture which is electrolyzed by the electrolytic bath firstly enters the sealing head cavities to be separated, and then the separated gas and alkali liquor respectively enter the separator to be treated and circulated.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen production by electrolysis of water, in particular to a novel electrolytic cell and a separation device. Background Art

[0002] The electrolysis water hydrogen production system mainly includes a hydrogen production power supply, an electrolyzer and a separation device. The electrolyzer is a device that electrolyzes water to produce hydrogen and oxygen, and the separation device is a device that separates the gas and alkaline solution from the electrolyzer.

[0003] At present, the industry practice is to set up a separation device with separate hydrogen and oxygen separation tanks to separate the gas and liquid coming out of the electrolyzer. The separated gas then passes through devices such as scrubbers and coolers, and is finally transported to the finished gas storage tank. At the same time, the separated liquid is returned to the electrolyzer for circulation after passing through a circulation pump.

[0004] However, the electrolyzer in the industry is only used as a device to electrolyze water to produce hydrogen and oxygen. The gas and alkali solution after the electrolyzer are mixed together and enter the separator for separation and post-processing. Therefore, the electrolyzer uses a very thick end plate, and the separator needs to be equipped with separate hydrogen and oxygen separation tanks. The weight of the entire system is relatively large and the cost is also relatively high. Utility Model Content

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problem that the structural design redundancy of the electrolytic cell in the prior art causes the entire system to be heavy and requires high costs.

[0006] In order to solve the above technical problems, the utility model provides a novel electrolytic cell and separation device, comprising: an electrolytic cell, which is a horizontal tank body with two closed ends, and the electrolytic cell is used for water electrolysis to produce hydrogen and oxygen, and the electrolytic cell is connected to a liquid inlet; a first end cap, which is arranged at one end of the electrolytic cell in the axial direction, and a pipeline is arranged between the first end cap and the electrolytic cell, and the hydrogen and alkali liquid mixture electrolyzed in the electrolytic cell enters the first end cap through the pipeline for gas-liquid separation; a second end cap, which is arranged at the other end of the electrolytic cell in the axial direction, and a pipeline is arranged between the second end cap and the electrolytic cell, and the electrolytic cell The oxygen and alkali liquid mixture produced by internal electrolysis enters the second end cap for gas-liquid separation through the second pipe; interface one, which is connected to the first end cap; interface two, which is connected to the second end cap; a circulation pump, the end of interface one away from the first end cap and the end of interface two away from the second end cap are both connected to the liquid inlet end of the circulation pump, the liquid outlet end of the circulation pump is connected to the liquid inlet, the alkali liquid separated in the first end cap is transported back to the electrolytic cell through the liquid inlet through interface one when the circulation pump provides power, and the alkali liquid separated in the second end cap is transported back to the electrolytic cell through the liquid inlet through interface two when the circulation pump provides power. The new electrolytic cell and separation device of the utility model are that the end pressure plates on both sides of the electrolytic cell are changed into the end cap structure, and the gas and alkali liquid mixture after electrolysis in the electrolytic cell first enter the end cap cavity for separation, and then the separated gas and alkali liquid enter the separator for treatment and circulation respectively.

[0007] In one embodiment of the utility model, flange 1 and flange 2 are respectively connected to the two ends of the electrolytic cell in the axial direction, the head 1 is connected to flange 1, and the head 2 is connected to flange 2.

[0008] In one embodiment of the present invention, the liquid inlet is arranged at the bottom of the electrolytic cell.

[0009] In one embodiment of the present invention, the interface 1 is arranged on the lower end of the head 1, and the interface 2 is arranged on the lower end of the head 2.

[0010] In one embodiment of the utility model, the upper end of the head one is provided with an interface three, and the upper end of the head two is provided with an interface four. The horizontal position of the interface three is higher than the height of the liquid level in the head one, and the horizontal position of the interface four is higher than the height of the liquid level in the head two.

[0011] In one embodiment of the utility model, the first end cap is a semicircular outer cover shell, and the interior of the first end cap is a cavity for accommodating a mixture of hydrogen and alkali solution.

[0012] In one embodiment of the utility model, the second sealing head is a semicircular outer cover shell, and the interior of the second sealing head is a second cavity for accommodating a mixture of oxygen and alkali solution.

[0013] The above technical solution of the utility model has the following beneficial effects compared with the prior art:

[0014] The new electrolytic cell and separation device described in the utility model is that the end pressure plates on both sides of the electrolytic cell are changed into a head structure, and the gas and alkali solution mixture after electrolysis in the electrolytic cell first enters the head cavity for direct separation. The pressure in the head cavity is the same as the pressure in the electrolytic cell, so the flange of the end pressure plate can be greatly thinned. Then the separated gas passes through the scrubber, cooler and other devices, and is finally transported to the finished gas storage tank. At the same time, the separated liquid is returned to the electrolytic cell for circulation after the circulation pump. Since the separator lacks the hydrogen and oxygen separation tanks, the weight and size of the entire separator are greatly reduced, and the manufacturing cost is also greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0016] Figure 1 This is a schematic diagram of the structure of the electrolytic cell part in the preferred embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall structure of a novel electrolytic cell and a separation device in a preferred embodiment of the utility model.

[0018] Explanation of the reference numerals in the specification: electrolytic cell 1, liquid inlet 2, end cap 1 3, pipeline 1 4, end cap 2 5, pipeline 2 6, interface 1 7, interface 2 8, circulating pump 9, flange 1 10, flange 2 11, interface 3 12, interface 4 13, hydrogen scrubber 14, hydrogen cooler 15, hydrogen storage tank 16, oxygen scrubber 17, oxygen cooler 18, oxygen storage tank 19. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0020] Embodiment 1

[0021] Reference Figure 1As shown, the novel electrolytic cell and separation device of the utility model comprises: an electrolytic cell 1, a liquid inlet 2, a head cover 3, a head cover 5, an interface 7, an interface 8 and a circulating pump 9; the electrolytic cell 1 is used for electrolyzing water to produce hydrogen and oxygen, and the electrolytic cell 1 is connected with a liquid inlet 2; the head cover 3 is arranged at one end of the electrolytic cell 1 in the axial direction, and a pipeline 4 is arranged between the head cover 3 and the electrolytic cell 1, and the hydrogen and alkali liquid mixture electrolyzed in the electrolytic cell 1 enters the head cover 3 through the pipeline 4 for gas-liquid separation; the head cover 5 is arranged at the other end of the electrolytic cell 1 in the axial direction, and a pipeline 6 is arranged between the head cover 5 and the electrolytic cell 1, The oxygen and alkali liquid mixture electrolyzed in the electrolytic cell 1 enters the head 2 5 through the pipeline 2 6 for gas-liquid separation; the interface 1 7 is connected to the head 3; the interface 2 8 is connected to the head 2 5; the circulating pump 9, the end of the interface 1 7 away from the head 3 and the end of the interface 2 8 away from the head 2 5 are both connected to the liquid inlet end of the circulating pump 9, the liquid outlet end of the circulating pump 9 is connected to the liquid inlet 2, the alkali liquid separated in the head 3 is transported back to the electrolytic cell 1 through the interface 1 7 through the liquid inlet 2 when the circulating pump 9 provides power, and the alkali liquid separated in the head 2 5 is transported back to the electrolytic cell 1 through the interface 2 8 through the liquid inlet 2 when the circulating pump 9 provides power.

[0022] In the above structure, the two ends of the electrolytic cell 1 in the axial direction are respectively connected with flange 10 and flange 2 11, the head 1 3 is connected with flange 10, and the head 2 5 is connected with flange 2 11.

[0023] In the above structure, the liquid inlet 2 is arranged at the bottom of the electrolytic cell 1. The interface 1 7 is arranged on the lower end of the end cap 1 3, and the interface 2 8 is arranged on the lower end of the end cap 2 5. The upper end of the end cap 1 3 is provided with an interface 3 12, and the upper end of the end cap 2 5 is provided with an interface 4 13. The horizontal position of the interface 3 12 is higher than the height of the liquid level in the end cap 1 3, and the horizontal position of the interface 4 13 is higher than the height of the liquid level in the end cap 2 5.

[0024] In the above structure, the end cap 1 3 is a semicircular outer shell, and the interior of the end cap 1 3 is a cavity 1 for containing a mixture of hydrogen and alkali liquid. The end cap 2 5 is a semicircular outer shell, and the interior of the end cap 2 5 is a cavity 2 for containing a mixture of oxygen and alkali liquid.

[0025] The novel electrolytic cell and separation device of the utility model, the working principle of the electrolytic cell part is:

[0026] The end caps 1 3 and 2 5 at both ends of the electrolytic cell 1 are connected to the hydrogen and oxygen channels inside the electrolytic cell 1 through pipes 1 4 and 2 6, respectively. The hydrogen and alkali mixture after the electrolysis of water in the electrolytic cell 1 enters the cavity 1 of the end cap 3 through pipes 1 4 for gas-liquid separation, and the separated alkali enters the electrolytic cell 1 through the transport system composed of interface 1 7, circulating pump 9 and liquid inlet 2 for circulating electrolysis reaction. Similarly, the oxygen and alkali mixture after the electrolysis of water in the electrolytic cell 1 enters the cavity 2 of the end cap 5 through pipes 2 6 for gas-liquid separation, and the separated alkali enters the electrolytic cell 1 through the transport system composed of interface 1 7, circulating pump 9 and liquid inlet 2 for circulating electrolysis reaction.

[0027] Embodiment 2

[0028] Reference Figure 1 As shown, the novel electrolytic cell and separation device of the utility model include: an electrolytic cell 1, a liquid inlet 2, a head seal 3, a head seal 5, an interface 7, an interface 8 and a circulating pump 9; the electrolytic cell 1 is a horizontal tank body with both ends closed, and the electrolytic cell 1 is used for water electrolysis to produce hydrogen and oxygen, and the electrolytic cell 1 is connected to the liquid inlet 2; the head seal 3 is arranged at one end of the electrolytic cell 1 in the axial direction, and a pipeline 4 is arranged between the head seal 3 and the electrolytic cell 1, and the hydrogen and alkali solution mixture electrolyzed in the electrolytic cell 1 enters the head seal 3 through the pipeline 4 for gas-liquid separation; the head seal 5 is arranged at the other end of the electrolytic cell 1 in the axial direction, and a pipeline 4 is arranged between the head seal 5 and the electrolytic cell 1 There is a pipeline 26, and the oxygen and alkali solution mixture electrolyzed in the electrolytic cell 1 enters the head 25 through the pipeline 26 for gas-liquid separation; an interface 17, which is connected to the head 3; an interface 28, which is connected to the head 5; a circulating pump 9, the end of the interface 17 away from the head 3 and the end of the interface 28 away from the head 5 are both connected to the liquid inlet end of the circulating pump 9, and the liquid outlet end of the circulating pump 9 is connected to the liquid inlet 2, the alkali solution separated in the head 3 is transported back to the electrolytic cell 1 through the liquid inlet 2 through the interface 17 when the circulating pump 9 provides power, and the alkali solution separated in the head 5 is transported back to the electrolytic cell 1 through the liquid inlet 2 through the interface 28 when the circulating pump 9 provides power.

[0029] In the above structure, the two ends of the electrolytic cell 1 in the axial direction are respectively connected with flange 10 and flange 2 11, the head 1 3 is connected with flange 10, and the head 2 5 is connected with flange 2 11.

[0030] In the above structure, the liquid inlet 2 is arranged at the bottom of the electrolytic cell 1. The interface 1 7 is arranged on the lower end of the end cap 1 3, and the interface 2 8 is arranged on the lower end of the end cap 2 5. The upper end of the end cap 1 3 is provided with an interface 3 12, and the upper end of the end cap 2 5 is provided with an interface 4 13. The horizontal position of the interface 3 12 is higher than the height of the liquid level in the end cap 1 3, and the horizontal position of the interface 4 13 is higher than the height of the liquid level in the end cap 2 5.

[0031] In the above structure, the end cap 1 3 is a semicircular outer shell, and the interior of the end cap 1 3 is a cavity 1 for containing a mixture of hydrogen and alkali liquid. The end cap 2 5 is a semicircular outer shell, and the interior of the end cap 2 5 is a cavity 2 for containing a mixture of oxygen and alkali liquid.

[0032] Reference Figure 2 As shown, the electrolyzer and separation device also include a hydrogen scrubber 14, a hydrogen cooler 15 and a hydrogen storage tank 16, the interface three 12 is connected to the hydrogen scrubber 14 through a pipeline, the hydrogen scrubber 14 is connected to the hydrogen cooler 15 through a pipeline, and the hydrogen cooler 15 is connected to the hydrogen storage tank 16 through a pipeline. The electrolyzer and separation device also include an oxygen scrubber 17, an oxygen cooler 18 and an oxygen storage tank 19, the interface four 13 is connected to the oxygen scrubber 17 through a pipeline, the oxygen scrubber 17 is connected to the oxygen cooler 18 through a pipeline, and the oxygen cooler 18 is connected to the oxygen storage tank 19 through a pipeline. The hydrogen scrubber 14, the hydrogen cooler 15, the hydrogen storage tank 16, the oxygen scrubber 17, the oxygen cooler 18 and the oxygen storage tank 19 constitute a separator part.

[0033] The working principle of the novel electrolytic cell and separation device of the utility model is:

[0034] The end caps 1 3 and 2 5 at both ends of the electrolytic cell 1 are connected to the hydrogen and oxygen channels inside the electrolytic cell 1 through pipes 1 4 and 2 6, respectively. The hydrogen and alkali solution mixture after water electrolysis in the electrolytic cell 1 enters the cavity 1 of the end cap 3 through pipes 1 4 for gas-liquid separation. The separated alkali solution enters the electrolytic cell 1 through the transport system composed of interface 1 7, circulating pump 9 and liquid inlet 2 for circulating electrolysis reaction. The separated hydrogen enters the hydrogen scrubber 14 and hydrogen cooler 15 in the separator through interface 3 12, and is finally transported to the hydrogen storage tank 16. Similarly, the oxygen and alkali solution mixture after water electrolysis in the electrolytic cell 1 enters the cavity 2 of the end cap 5 through pipes 2 6 for gas-liquid separation. The separated alkali solution enters the electrolytic cell 1 through the transport system composed of interface 1 7, circulating pump 9 and liquid inlet 2 for circulating electrolysis reaction. The separated oxygen enters the oxygen scrubber 17 and oxygen cooler 18 and other devices in the separator through the interface 13, and is finally transported to the oxygen storage tank 19.

[0035] The new electrolytic cell and separation device of the utility model is that the end pressure plates on both sides of the electrolytic cell 1 are changed into a head structure, and the pressure in the head cavity is the same as the pressure in the electrolytic cell 1, so the flange of the end pressure plate can be greatly thinned. Then the separated gas passes through the scrubber and cooler and other devices. Since the separator does not have the hydrogen and oxygen separation tanks, the weight and size of the entire separator are greatly reduced, and the manufacturing cost is also greatly reduced.

[0036] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A novel electrolytic cell and separation device, characterized in that: include, An electrolytic cell, which is used for electrolyzing water to produce hydrogen and oxygen, and the electrolytic cell is connected to a liquid inlet; A sealing head 1 is arranged at one end of the electrolytic cell in the axial direction. A pipeline 1 is arranged between the sealing head 1 and the electrolytic cell. The hydrogen and alkali solution mixture electrolyzed in the electrolytic cell enters the sealing head 1 through the pipeline 1 for gas-liquid separation. A second end cap is arranged at the other end of the electrolytic cell in the axial direction. A second pipe is arranged between the second end cap and the electrolytic cell. The oxygen and alkali solution mixture electrolyzed in the electrolytic cell enters the second end cap through the second pipe for gas-liquid separation. Interface 1, which is connected to end cap 1; Interface 2, which is connected to the second end cap; A circulation pump, wherein the end of the interface one away from the head one and the end of the interface two away from the head two are both connected to the liquid inlet end of the circulation pump, the liquid outlet end of the circulation pump is connected to the liquid inlet, the alkali solution separated in the head one is transported back to the electrolytic cell through the liquid inlet through the interface one when the circulation pump provides power, and the alkali solution separated in the head two is transported back to the electrolytic cell through the liquid inlet through the interface two when the circulation pump provides power.

2. The novel electrolytic cell and separation device according to claim 1, characterized in that: The two ends of the electrolytic cell in the axial direction are respectively connected with flange one and flange two, the head one is connected with flange one, and the head two is connected with flange two.

3. The novel electrolytic cell and separation device according to claim 1, characterized in that: The liquid inlet is arranged at the bottom of the electrolytic cell.

4. The novel electrolytic cell and separation device according to claim 1, characterized in that: The interface 1 is arranged on the lower end of the first end cover, and the interface 2 is arranged on the lower end of the second end cover.

5. The novel electrolytic cell and separation device according to claim 1 is characterized in that: The upper end of the head one is provided with an interface three, and the upper end of the head two is provided with an interface four. The horizontal position of the interface three is higher than the height of the liquid level in the head one, and the horizontal position of the interface four is higher than the height of the liquid level in the head two.

6. The novel electrolytic cell and separation device according to claim 1, characterized in that: The end cap 1 is a semicircular outer cover shell, and the interior of the end cap 1 is a cavity 1 for accommodating a mixture of hydrogen and alkali solution.

7. The novel electrolytic cell and separation device according to claim 1 is characterized in that: The second sealing head is a semicircular outer cover shell, and the interior of the second sealing head is a second cavity for accommodating a mixture of oxygen and alkali solution.

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