Rotational flow gas-liquid separation device for producing hydrogen by electrolyzing seawater

Abstract

The utility model discloses a rotational flow gas-liquid separation device for producing hydrogen by electrolyzing seawater. The rotational flow gas-liquid separation device comprises an oxygen separation unit (1) and a hydrogen separation unit (2) which are in the form of an inner sleeve and an outer sleeve, the oxygen separation unit (1) comprises an oxygen separation chamber (1-3) and a hydrogen-oxygen pressure balance pipe (1-4); the hydrogen separation unit (2) comprises a hydrogen separation chamber (2-4); the hydrogen-oxygen pressure balance pipe (1-4) is horizontally mounted in the oxygen separation chamber (1-3), and a mixed liquid column (1-5) of hydrogen-oxygen electrolyte is arranged in the hydrogen-oxygen pressure balance pipe (1-4); and the oxygen separation chamber (1-3) is communicated with the hydrogen separation chamber (2-4) through a hydrogen-oxygen pressure balance pipe (1-4). The structure of a traditional hydrogen and oxygen separation device is changed through the structure of the inner sleeve and the outer sleeve, gas-liquid separation of two different electrolytes is achieved in one separation device, and the structure of the device is more compact and efficient. Meanwhile, gas-liquid separation is carried out by adopting a combined separation mode which takes hydrocyclone separation as a main mode and takes gravity separation as an auxiliary mode, so that the gas-liquid separation efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of cyclone gas-liquid separation device and water electrolysis hydrogen production, in particular to a cyclone gas-liquid separation device and a gas-liquid separation method for seawater electrolysis hydrogen production, and more particularly to a cyclone gas-liquid separation device and a gas-liquid separation method for seawater electrolysis hydrogen production. Background Art

[0002] In the process of electrolyzing seawater to produce hydrogen, the obtained hydrogen electrolyte and oxygen electrolyte need to be separated by a gas-liquid separation device to obtain pure hydrogen and oxygen and to recover the hydrogen electrolyte and oxygen electrolyte. In the traditional process of electrolyzing seawater to produce hydrogen, two gas-liquid separation devices are generally used to treat the hydrogen electrolyte and the oxygen electrolyte respectively. This treatment scheme increases the number of equipment in the overall process, complicates the process flow, and the overall process system is not compact enough, and the improvement of efficiency is also limited.

[0003] In order to solve the above problems, the present utility model is proposed. Utility Model Content

[0004] The utility model proposes a cyclone gas-liquid separation device for hydrogen production by electrolysis of seawater. The structure of the traditional hydrogen and oxygen separation devices is changed through an innovative inner and outer sleeve structure, and the gas-liquid separation of two different electrolytes is realized in one separation device, making the structure of the device more compact and efficient. At the same time, a combined separation method with cyclone separation as the main method and gravity separation as the auxiliary method is adopted for gas-liquid separation, which effectively increases the gas-liquid separation efficiency, thereby reducing the number of equipment in the hydrogen production process by electrolysis of water, simplifying the process flow, improving the compactness of the overall process system, and improving the efficiency of electrolyte gas-liquid separation treatment.

[0005] The utility model provides a cyclonic gas-liquid separation device for producing hydrogen by electrolyzing seawater, which comprises an oxygen separation unit 1 and a hydrogen separation unit 2 in the form of an inner and outer sleeve, wherein the hydrogen separation unit 2 is sleeved on the outer side of the oxygen separation unit 1;

[0006] The oxygen separation unit 1 comprises an oxygen separation chamber 1-3 and a hydrogen-oxygen pressure balance pipe 1-4, wherein the oxygen separation chamber 1-3 contains an oxygen electrolyte; the oxygen electrolyte refers to an electrolyte containing oxygen.

[0007] The hydrogen separation unit 2 includes a hydrogen separation chamber 2 - 4 , and the hydrogen separation chamber 2 - 4 contains a hydrogen electrolyte; the hydrogen electrolyte refers to an electrolyte containing hydrogen.

[0008] The hydrogen-oxygen pressure balance tube 1-4 is horizontally installed inside the oxygen separation chamber 1-3, and the hydrogen-oxygen pressure balance tube 1-4 has a mixed liquid column 1-5 of hydrogen-oxygen electrolyte; the oxygen separation chamber 1-3 and the hydrogen separation chamber 2-4 are connected through the hydrogen-oxygen pressure balance tube 1-4, and the pressure is balanced and the mixing of the oxygen electrolyte and the hydrogen electrolyte is blocked through the mixed liquid column 1-5. The function of the hydrogen-oxygen pressure balance tube 1-4 is to balance the pressure of the hydrogen electrolyte and the oxygen electrolyte to ensure that the outlet pressures of the two electrolytes are the same; the function of the mixed liquid column 1-5 is to serve as a medium for pressure exchange and block the mixing of the hydrogen-oxygen electrolyte.

[0009] Preferably, the oxygen separation unit 1 and the hydrogen separation unit 2 are integrally formed in the form of an inner and outer sleeve.

[0010] Preferably, the oxygen separation unit 1 further comprises an oxygen outlet pipe 1-1, an auxiliary swirl plate 1-2, an oxygen electrolyte outlet pipe 1-6 and an oxygen electrolyte inlet pipe 1-7;

[0011] The oxygen separation chamber 1-3 is a column having a certain cone angle at the lower end;

[0012] The oxygen electrolyte inlet pipe 1-7 is horizontally and tangentially installed at the upper end of the oxygen separation chamber 1-3 and is connected to the interior of the oxygen separation chamber 1-3. The oxygen electrolyte that needs gas-liquid separation is sprayed into the oxygen separation chamber 1-3 through the oxygen electrolyte inlet pipe 1-7; the purpose of the horizontal and tangential installation of the oxygen electrolyte inlet pipe 1-7 is to tangentially spray the oxygen electrolyte into the oxygen separation chamber to form a vortex.

[0013] The oxygen electrolyte outlet pipe 1-6 is installed at the bottom end of the oxygen separation chamber 1-3 and is connected to the inside of the oxygen separation chamber 1-3. The separated oxygen electrolyte flows out of the oxygen separation chamber 1-3 through the oxygen electrolyte outlet pipe 1-6; the oxygen electrolyte outlet pipe 1-6 is a straight pipe located at the center of the bottom end of the oxygen separation chamber 1-3;

[0014] The auxiliary cyclone plate 1-2 is horizontally installed at the upper end of the oxygen separation chamber 1-3 near the oxygen electrolyte inlet pipe 1-7, and is used to enhance the formed oxygen electrolyte cyclone;

[0015] The oxygen outlet pipe 1-1 passes into the oxygen separation chamber 1-3 from the top center of the oxygen separation chamber 1-3 and passes through the center of the auxiliary cyclone plate 1-2. The separated oxygen is discharged from the oxygen separation chamber 1-3 through the oxygen outlet pipe 1-1.

[0016] Preferably, the oxygen outlet pipe 1-1 is one, and the oxygen electrolyte outlet pipe 1-6 is one;

[0017] The cone angle of the lower end of the oxygen separation chamber 1-3 is 15-25°.

[0018] Preferably, the hydrogen and oxygen pressure balance pipe 1-4 is close to one side of the oxygen electrolyte outlet pipe 1-6, and there are four hydrogen and oxygen pressure balance pipes 1-4.

[0019] Preferably, the hydrogen separation unit 2 further comprises a hydrogen outlet pipe 2-1, a hydrogen electrolyte inlet pipe 2-2, a gas branch pipe 2-3 and a hydrogen electrolyte outlet pipe 2-5;

[0020] The hydrogen separation chamber 2-4 is a chamber consisting of a column having a diameter greater than that of the oxygen separation chamber and concentric with the oxygen separation chamber 1-3 and a wall of the oxygen separation chamber 1-3;

[0021] The hydrogen electrolyte inlet pipe 2-2 is installed obliquely and tangentially on the outer cylinder wall of the hydrogen separation chamber 2-4 and is connected to the interior of the hydrogen separation chamber 2-4. The hydrogen electrolyte to be separated into gas and liquid is sprayed into the hydrogen separation chamber 2-4 through the hydrogen electrolyte inlet pipe 2-2.

[0022] The hydrogen electrolyte outlet pipe 2-5 is located at the bottom end of the outer cylinder wall of the hydrogen separation chamber 2-4, and the separated hydrogen electrolyte flows out of the hydrogen separation chamber 2-4 through the hydrogen electrolyte outlet pipe 2-5;

[0023] The hydrogen outlet pipe 2-1 is installed at the top of the hydrogen separation chamber 2-4 and is connected to the inside of the hydrogen separation chamber 2-4. The hydrogen obtained after separation is discharged from the hydrogen separation chamber 2-4 through the hydrogen outlet pipe 2-1.

[0024] The two ends of the air branch pipe 2-3 are respectively connected to the hydrogen electrolyte inlet pipe 2-2 and the hydrogen separation chamber 2-4. The function of the air branch pipe 2-3 is to separate larger bubbles by gravity when the air-liquid mixture is introduced.

[0025] Preferably, there are four hydrogen outlet pipes 2-1 and four hydrogen electrolyte outlet pipes 2-5; the hydrogen electrolyte inlet pipe 2-2 is installed on the outer cylinder wall of the hydrogen separation chamber 2-4 in an inclined manner, with an inclination angle of 45°.

[0026] Preferably, the number of the oxygen electrolyte inlet pipe 1-7 and the hydrogen electrolyte inlet pipe 2-2 is arranged for the purpose of forming an optimal swirl flow, and can be two or more. Preferably, there are four oxygen electrolyte inlet pipes 1-7. Preferably, there are two hydrogen electrolyte inlet pipes 2-2 arranged symmetrically.

[0027] The cyclone gas-liquid separation device described in the utility model is used for separation, and the cyclone gas-liquid separation method is as follows:

[0028] The oxygen electrolyte with oxygen is tangentially sprayed into the oxygen separation chamber 1-3 through the oxygen electrolyte inlet pipe 1-7 to form an oxygen electrolyte vortex, and the oxygen electrolyte vortex is enhanced by the auxiliary vortex plate 1-2, and a stable oxygen electrolysis vortex is formed in the conical chamber at the bottom of the oxygen separation chamber 1-3. Through the vortex separation effect, oxygen is separated from the oxygen electrolyte vortex and gathered in the center of the oxygen separation chamber 1-3, and finally discharged through the oxygen outlet pipe 1-1;

[0029] At the same time, the hydrogen electrolyte with hydrogen flows tangentially into the hydrogen separation chamber 2-4 through the hydrogen electrolyte inlet pipe 2-2, and forms a hydrogen electrolyte vortex under the guidance of the outer wall. Before the hydrogen electrolyte with hydrogen enters the hydrogen separation chamber 2-4, a part of the hydrogen passes through the gas branch pipe 2-3 and is gathered together with the hydrogen separated by the hydrogen electrolyte vortex to the top of the hydrogen separation chamber 2-4, and is finally discharged through the hydrogen outlet pipe 2-1;

[0030] During the whole process, the separated oxygen electrolyte and hydrogen electrolyte balance the pressure through the hydrogen-oxygen pressure balance pipe 1-4, and finally are discharged from the oxygen electrolyte outlet pipe 1-6 and the hydrogen electrolyte outlet pipe 2-5 at the bottom at the same pressure.

[0031] Preferably, the hydrogen and oxygen pressure balance tubes 1-4 are arranged close to the center of the oxygen electrolyte vortex. At this position, the vortex intensity is weak and the pressure is relatively stable.

[0032] Compared with the prior art, the utility model has the following beneficial effects:

[0033] 1. The utility model provides a cyclone gas-liquid separation device for producing hydrogen by electrolyzing seawater. The structure of the traditional hydrogen and oxygen separation devices is changed through an innovative inner and outer sleeve structure, and the gas-liquid separation of two different electrolytes is realized in one separation device, making the structure of the device more compact and efficient.

[0034] 2. The utility model adopts a combined separation method of cyclone separation as the main method and gravity separation as the auxiliary method for gas-liquid separation, which effectively increases the gas-liquid separation efficiency. The results of simulation calculation show that the cyclone separation efficiency is above 95%.

[0035] 3. The oxygen separation unit 1 of the utility model includes a hydrogen-oxygen pressure balance tube 1-4, in which there is a mixed liquid column 1-5 of hydrogen-oxygen electrolyte; the oxygen separation chamber 1-3 and the hydrogen separation chamber 2-4 are connected through the hydrogen-oxygen pressure balance tube 1-4, and the mixed liquid column 1-5 is used to balance the pressure and prevent the mixing of oxygen electrolyte and hydrogen electrolyte. The function of the hydrogen-oxygen pressure balance tube 1-4 is to balance the pressure of hydrogen electrolyte and oxygen electrolyte to ensure that the outlet pressures of the two electrolytes are the same; the function of the mixed liquid column 1-5 is to serve as a medium for pressure exchange and prevent the mixing of hydrogen and oxygen electrolytes.

[0036] 4. The oxygen separation unit 1 of the utility model includes an auxiliary swirl plate 1-2, which is horizontally installed at the upper end of the oxygen separation chamber 1-3 near the oxygen electrolyte inlet pipe 1-7 to enhance the formed oxygen electrolyte swirl.

[0037] 5. The oxygen electrolyte inlet pipe 1-7 of the utility model is horizontally and tangentially installed at the upper end of the oxygen separation chamber 1-3. The purpose of the horizontal and tangential installation of the oxygen electrolyte inlet pipe 1-7 is to tangentially spray the oxygen electrolyte into the oxygen separation chamber to form a vortex.

[0038] 6. The utility model is provided with an air branch pipe 2-3 between the hydrogen electrolyte inlet pipe 2-2 and the hydrogen separation chamber 2-4. The function of the air branch pipe 2-3 is to separate larger bubbles by gravity when the gas-liquid mixture is introduced.

[0039] 7. The arrangement position of the hydrogen and oxygen pressure balance pipe 1-4 of the utility model is close to the center of the oxygen electrolyte vortex. At this position, the vortex intensity is weak and the pressure is relatively stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the structure of the device of the utility model.

[0041] Figure 2 The figure is a schematic diagram of the working principle of the device of the utility model.

[0042] The names of the figure symbols in the figure description are: 1 oxygen separation unit, 2 hydrogen separation unit, 1-1 oxygen outlet pipe, 1-2 auxiliary swirl plate, 1-3 oxygen separation chamber, 1-4 hydrogen and oxygen pressure balance pipe, 1-5 mixed liquid column, 1-6 oxygen electrolyte outlet pipe, 1-7 oxygen electrolyte inlet pipe; 2-1 hydrogen outlet pipe, 2-2 hydrogen electrolyte inlet pipe, 2-3 gas branch pipe, 2-4 hydrogen separation chamber, 2-5 hydrogen electrolyte outlet pipe. DETAILED DESCRIPTION

[0043] The utility model is further described in detail below in conjunction with the embodiments.

[0044] Those skilled in the art will understand that the following examples are only used to illustrate the present invention and should not be considered to limit the scope of the present invention. If no specific techniques or conditions are specified in the examples, the techniques or conditions described in the literature in the field or the product instructions are used. If the manufacturer of the materials or equipment used is not specified, they are all conventional products that can be purchased.

[0045] Those skilled in the art will appreciate that, unless expressly stated otherwise, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present utility model refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" to another element, it may be directly connected to the other element, or there may be intermediate elements. In addition, the "connection" used here may include wireless connection.

[0046] In the description of the present invention, unless otherwise specified, "plurality" means two or more than two. The terms "inside", "upper", "lower", etc., indicating positions or state relationships, are based on the positions or state relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operate in a specific position, and therefore cannot be understood as limiting the present invention.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "provided with" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention will be understood according to specific circumstances.

[0048] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical terms and scientific terms, have the same meaning as the general understanding of ordinary technicians in the field to which the utility model belongs. It should also be understood that those terms such as those defined in general dictionaries should be understood to have the same meaning as the meaning in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0049] Example

[0050] Combine the following Figure 1 Description of the cyclone gas-liquid separation device:

[0051] This embodiment is a cyclonic gas-liquid separation device for producing hydrogen by electrolyzing seawater, which comprises an oxygen separation unit 1 and a hydrogen separation unit 2 in the form of an inner and outer sleeve, wherein the hydrogen separation unit 2 is sleeved on the outer side of the oxygen separation unit 1;

[0052] The oxygen separation unit 1 comprises an oxygen separation chamber 1-3 and a hydrogen-oxygen pressure balance pipe 1-4, wherein the oxygen separation chamber 1-3 contains an oxygen electrolyte; the oxygen electrolyte refers to an electrolyte containing oxygen.

[0053] The hydrogen separation unit 2 includes a hydrogen separation chamber 2 - 4 , and the hydrogen separation chamber 2 - 4 contains a hydrogen electrolyte; the hydrogen electrolyte refers to an electrolyte containing hydrogen.

[0054] The hydrogen-oxygen pressure balance tube 1-4 is horizontally installed inside the oxygen separation chamber 1-3, and the hydrogen-oxygen pressure balance tube 1-4 has a mixed liquid column 1-5 of hydrogen-oxygen electrolyte; the oxygen separation chamber 1-3 and the hydrogen separation chamber 2-4 are connected through the hydrogen-oxygen pressure balance tube 1-4, and the pressure is balanced and the mixing of the oxygen electrolyte and the hydrogen electrolyte is blocked through the mixed liquid column 1-5. The function of the hydrogen-oxygen pressure balance tube 1-4 is to balance the pressure of the hydrogen electrolyte and the oxygen electrolyte to ensure that the outlet pressures of the two electrolytes are the same; the function of the mixed liquid column 1-5 is to serve as a medium for pressure exchange and block the mixing of the hydrogen-oxygen electrolyte.

[0055] The oxygen separation unit 1 and the hydrogen separation unit 2 are integrally formed in the form of inner and outer sleeves.

[0056] The oxygen separation unit 1 also includes an oxygen outlet pipe 1-1, an auxiliary swirl plate 1-2, an oxygen electrolyte outlet pipe 1-6 and an oxygen electrolyte inlet pipe 1-7;

[0057] The oxygen separation chamber 1-3 is a column having a certain cone angle at the lower end;

[0058] The oxygen electrolyte inlet pipe 1-7 is horizontally and tangentially installed at the upper end of the oxygen separation chamber 1-3 and is connected to the interior of the oxygen separation chamber 1-3. The oxygen electrolyte that needs gas-liquid separation is sprayed into the oxygen separation chamber 1-3 through the oxygen electrolyte inlet pipe 1-7; the purpose of the horizontal and tangential installation of the oxygen electrolyte inlet pipe 1-7 is to tangentially spray the oxygen electrolyte into the oxygen separation chamber to form a vortex.

[0059] The oxygen electrolyte outlet pipe 1-6 is installed at the bottom end of the oxygen separation chamber 1-3 and is connected to the inside of the oxygen separation chamber 1-3. The separated oxygen electrolyte flows out of the oxygen separation chamber 1-3 through the oxygen electrolyte outlet pipe 1-6; the oxygen electrolyte outlet pipe 1-6 is a straight pipe located at the center of the bottom end of the oxygen separation chamber 1-3;

[0060] The auxiliary cyclone plate 1-2 is horizontally installed at the upper end of the oxygen separation chamber 1-3 near the oxygen electrolyte inlet pipe 1-7, and is used to enhance the formed oxygen electrolyte cyclone;

[0061] The oxygen outlet pipe 1-1 passes into the oxygen separation chamber 1-3 from the top center of the oxygen separation chamber 1-3 and passes through the center of the auxiliary cyclone plate 1-2. The separated oxygen is discharged from the oxygen separation chamber 1-3 through the oxygen outlet pipe 1-1.

[0062] There is one oxygen outlet pipe 1-1 and one oxygen electrolyte outlet pipe 1-6;

[0063] The cone angle of the lower end of the oxygen separation chamber 1-3 is 15°.

[0064] The hydrogen and oxygen pressure balance pipe 1-4 is close to one side of the oxygen electrolyte outlet pipe 1-6, and there are four hydrogen and oxygen pressure balance pipes 1-4.

[0065] The hydrogen separation unit 2 also includes a hydrogen outlet pipe 2-1, a hydrogen electrolyte inlet pipe 2-2, a gas branch pipe 2-3 and a hydrogen electrolyte outlet pipe 2-5;

[0066] The hydrogen separation chamber 2-4 is a chamber consisting of a column having a diameter greater than that of the oxygen separation chamber and concentric with the oxygen separation chamber 1-3 and a wall of the oxygen separation chamber 1-3;

[0067] The hydrogen electrolyte inlet pipe 2-2 is installed obliquely and tangentially on the outer cylinder wall of the hydrogen separation chamber 2-4 and is connected to the interior of the hydrogen separation chamber 2-4. The hydrogen electrolyte to be separated into gas and liquid is sprayed into the hydrogen separation chamber 2-4 through the hydrogen electrolyte inlet pipe 2-2.

[0068] The hydrogen electrolyte outlet pipe 2-5 is located at the bottom end of the outer cylinder wall of the hydrogen separation chamber 2-4, and the separated hydrogen electrolyte flows out of the hydrogen separation chamber 2-4 through the hydrogen electrolyte outlet pipe 2-5;

[0069] The hydrogen outlet pipe 2-1 is installed at the top of the hydrogen separation chamber 2-4 and is connected to the inside of the hydrogen separation chamber 2-4. The hydrogen obtained after separation is discharged from the hydrogen separation chamber 2-4 through the hydrogen outlet pipe 2-1.

[0070] The two ends of the air branch pipe 2-3 are respectively connected to the hydrogen electrolyte inlet pipe 2-2 and the hydrogen separation chamber 2-4. The function of the air branch pipe 2-3 is to separate larger bubbles by gravity when the air-liquid mixture is introduced.

[0071] There are four hydrogen outlet pipes 2-1 and four hydrogen electrolyte outlet pipes 2-5; the hydrogen electrolyte inlet pipe 2-2 is installed on the outer cylinder wall of the hydrogen separation chamber 2-4 in an inclined manner, with an inclination angle of 45°.

[0072] There are four oxygen electrolyte inlet pipes 1-7 and two hydrogen electrolyte inlet pipes 2-2 arranged symmetrically.

[0073] Combine the following Figure 2 The cyclone gas-liquid separation method is described as follows:

[0074] The cyclone gas-liquid separation device is used for separation, and the cyclone gas-liquid separation method is as follows:

[0075] The oxygen electrolyte with oxygen is tangentially sprayed into the oxygen separation chamber 1-3 through the oxygen electrolyte inlet pipe 1-7 to form an oxygen electrolyte vortex, and the oxygen electrolyte vortex is enhanced by the auxiliary vortex plate 1-2, and a stable oxygen electrolysis vortex is formed in the conical chamber at the bottom of the oxygen separation chamber 1-3. Through the vortex separation effect, oxygen is separated from the oxygen electrolyte vortex and gathered in the center of the oxygen separation chamber 1-3, and finally discharged through the oxygen outlet pipe 1-1;

[0076] At the same time, the hydrogen electrolyte with hydrogen flows tangentially into the hydrogen separation chamber 2-4 through the hydrogen electrolyte inlet pipe 2-2, and forms a hydrogen electrolyte vortex under the guidance of the outer wall. Before the hydrogen electrolyte with hydrogen enters the hydrogen separation chamber 2-4, a part of the hydrogen passes through the gas branch pipe 2-3 and is gathered together with the hydrogen separated by the hydrogen electrolyte vortex to the top of the hydrogen separation chamber 2-4, and is finally discharged through the hydrogen outlet pipe 2-1;

[0077] During the whole process, the separated oxygen electrolyte and hydrogen electrolyte balance the pressure through the hydrogen-oxygen pressure balance pipe 1-4, and finally are discharged from the oxygen electrolyte outlet pipe 1-6 and the hydrogen electrolyte outlet pipe 2-5 at the bottom at the same pressure.

[0078] The hydrogen and oxygen pressure balance pipes 1-4 are arranged close to the center of the oxygen electrolyte vortex. At this position, the vortex intensity is weak and the pressure is relatively stable.

Claims

1. A cyclonic gas-liquid separation device for producing hydrogen by electrolyzing seawater, characterized in that: The oxygen separation unit (1) and the hydrogen separation unit (2) are in the form of inner and outer sleeves, wherein the hydrogen separation unit (2) is sleeved on the outside of the oxygen separation unit (1); The oxygen separation unit (1) comprises an oxygen separation chamber (1-3) and a hydrogen-oxygen pressure balance pipe (1-4), wherein the oxygen separation chamber (1-3) contains an oxygen electrolyte; The hydrogen separation unit (2) comprises a hydrogen separation chamber (2-4), wherein the hydrogen separation chamber (2-4) contains a hydrogen electrolyte; The hydrogen-oxygen pressure balance pipe (1-4) is horizontally installed inside the oxygen separation chamber (1-3), and a mixed liquid column (1-5) of hydrogen-oxygen electrolyte is provided in the hydrogen-oxygen pressure balance pipe (1-4); the oxygen separation chamber (1-3) and the hydrogen separation chamber (2-4) are connected via the hydrogen-oxygen pressure balance pipe (1-4).

2. The cyclone gas-liquid separation device according to claim 1, characterized in that: The oxygen separation unit (1) and the hydrogen separation unit (2) are integrally formed in the form of an inner and outer sleeve.

3. The cyclone gas-liquid separation device according to claim 1, characterized in that: The oxygen separation unit (1) further comprises an oxygen outlet pipe (1-1), an auxiliary swirl plate (1-2), an oxygen electrolyte outlet pipe (1-6) and an oxygen electrolyte inlet pipe (1-7); The oxygen separation chamber (1-3) is a column having a certain cone angle at the lower end; The oxygen electrolyte inlet pipe (1-7) is horizontally and tangentially installed at the upper end of the oxygen separation chamber (1-3) and is connected to the interior of the oxygen separation chamber (1-3). The oxygen electrolyte to be separated into gas and liquid is sprayed into the oxygen separation chamber (1-3) through the oxygen electrolyte inlet pipe (1-7); The oxygen electrolyte outlet pipe (1-6) is installed at the bottom end of the oxygen separation chamber (1-3) and is connected to the interior of the oxygen separation chamber (1-3), and the separated oxygen electrolyte flows out of the oxygen separation chamber (1-3) through the oxygen electrolyte outlet pipe (1-6); The auxiliary cyclone plate (1-2) is horizontally installed at the upper end of the oxygen separation chamber (1-3) close to the oxygen electrolyte inlet pipe (1-7); The oxygen outlet pipe (1-1) is passed from the center position of the top of the oxygen separation chamber (1-3) into the interior of the oxygen separation chamber (1-3) and passes through the center of the auxiliary cyclone plate (1-2). The oxygen obtained after separation is discharged from the oxygen separation chamber (1-3) through the oxygen outlet pipe (1-1).

4. The cyclone gas-liquid separation device according to claim 3, characterized in that: There is one oxygen outlet pipe (1-1) and one oxygen electrolyte outlet pipe (1-6); The cone angle of the lower end of the oxygen separation chamber (1-3) is 15-25°.

5. The cyclone gas-liquid separation device according to claim 3, characterized in that: The hydrogen and oxygen pressure balance pipe (1-4) is close to one side of the oxygen electrolyte outlet pipe (1-6), and there are four hydrogen and oxygen pressure balance pipes (1-4).

6. The cyclone gas-liquid separation device according to any one of claims 3, characterized in that: The hydrogen separation unit (2) further comprises a hydrogen outlet pipe (2-1), a hydrogen electrolyte inlet pipe (2-2), a gas branch pipe (2-3) and a hydrogen electrolyte outlet pipe (2-5); The hydrogen separation chamber (2-4) is a chamber consisting of a column having a diameter greater than that of the oxygen separation chamber and concentric with the oxygen separation chamber (1-3) and a wall of the oxygen separation chamber (1-3); The hydrogen electrolyte inlet pipe (2-2) is installed obliquely and tangentially on the outer cylinder wall of the hydrogen separation chamber (2-4) and is connected to the interior of the hydrogen separation chamber (2-4). The hydrogen electrolyte to be separated into gas and liquid is sprayed into the hydrogen separation chamber (2-4) through the hydrogen electrolyte inlet pipe (2-2); The hydrogen electrolyte outlet pipe (2-5) is located at the bottom end of the outer cylinder wall of the hydrogen separation chamber (2-4), and the separated hydrogen electrolyte flows out of the hydrogen separation chamber (2-4) through the hydrogen electrolyte outlet pipe (2-5); The hydrogen outlet pipe (2-1) is installed at the top of the hydrogen separation chamber (2-4) and is connected to the interior of the hydrogen separation chamber (2-4); the hydrogen obtained after separation is discharged from the hydrogen separation chamber (2-4) through the hydrogen outlet pipe (2-1); Both ends of the gas branch pipe (2-3) are respectively connected to the hydrogen electrolyte inlet pipe (2-2) and the hydrogen separation chamber (2-4).

7. The cyclone gas-liquid separation device according to claim 6, characterized in that: There are four hydrogen outlet pipes (2-1) and four hydrogen electrolyte outlet pipes (2-5); The hydrogen electrolyte inlet pipe (2-2) is installed on the outer cylinder wall of the hydrogen separation chamber (2-4) in an inclined manner, with an inclination angle of 45°.

8. The cyclone gas-liquid separation device according to claim 6, characterized in that: The number of the oxygen electrolyte inlet pipe (1-7) and the hydrogen electrolyte inlet pipe (2-2) is arranged for the purpose of forming an optimal swirl flow, and can be two or more.

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