Gas-liquid separation and washing integrated device for producing hydrogen by electrolyzing water

Abstract

The invention discloses a gas-liquid separation and washing integrated device and method for hydrogen production through water electrolysis. The device comprises a hydrogen side gas-liquid separation unit, a hydrogen side washing unit, an oxygen side gas-liquid separation unit, an oxygen side washing unit and a pressure balance unit. The hydrogen side gas-liquid separation unit is coupled with the hydrogen side washing unit, the oxygen side gas-liquid separation unit is coupled with the oxygen side washing unit, and the hydrogen side gas-liquid separation unit is coupled with the oxygen side gas-liquid separation unit through the pressure balance unit. According to the invention, the gas-liquid separation and washing processes of the hydrogen-oxygen electrolyte are integrated in one device, so that the number of the whole equipment of the process for producing hydrogen by electrolyzing water is reduced, the complexity of the whole process is reduced, and the compactness of the process equipment is improved, thereby improving the whole operation efficiency of the process. And hydrogen and oxygen are separated at the same time and collected separately, so that the process requirements and safety specifications of gas-liquid separation of the hydrogen-oxygen electrolyte in a water electrolysis hydrogen production process are well met, and the operation efficiency of the whole hydrogen production process is improved.

Description

Technical Field

[0001] The invention relates to the field of hydrogen production by water electrolysis and gas-liquid separation devices, and in particular to a gas-liquid separation and washing integrated device for hydrogen production by water electrolysis. Background Art

[0002] Hydrogen energy is one of the important carriers for the gradual transformation of global energy to low-carbonization, and is also an important medium for my country to achieve its "dual carbon" goals. According to statistics, about 96% of the world's hydrogen comes from fossil fuels, which produces a large amount of CO 2 Compared with the traditional industrial hydrocarbon steam reforming method, water electrolysis to produce hydrogen is an efficient and clean hydrogen production technology.

[0003] In the process of producing hydrogen by electrolysis of water, it is necessary to separate the hydrogen electrolyte mixed with hydrogen and the oxygen electrolyte mixed with oxygen for gas-liquid separation and washing. In order to achieve gas-liquid separation and washing of two different and immiscible electrolytes, hydrogen and oxygen, the traditional solution requires at least two independent gas-liquid separation devices and two independent washing devices to perform gas-liquid separation on the hydrogen-oxygen electrolyte and wash the hydrogen and oxygen respectively. This solution limits the number of equipment for the overall hydrogen production process, increases the complexity of the overall process, reduces the compactness of the process equipment, and limits the improvement of hydrogen production efficiency.

[0004] In addition, the gas-liquid separation in the existing water electrolysis hydrogen production process is usually gravity separation, and gravity separation mainly uses the density difference between gas and liquid under the action of gravity to achieve separation. In the process of water electrolysis hydrogen production, taking hydrogen measurement as an example, hydrogen as a gas product has a density much smaller than the liquid as an electrolyte, so under the action of gravity, the gas will naturally rise and separate from the liquid. However, under the action of gravity, the separation speed of gas and liquid is relatively slow, and when the gas content is high or the bubbles are small, a gas-liquid mixture is easily formed, resulting in a decrease in separation efficiency. Therefore, the current separation efficiency of the gravity separation method is limited.

[0005] In order to solve the above problems, the present invention is proposed. Summary of the invention

[0006] The purpose of the present invention is to address the deficiencies in the prior art and to propose an integrated gas-liquid separation and washing device for hydrogen production by electrolysis of water. The device fully combines the structural characteristics of two gas-liquid separation devices, namely cyclone separation and gravity separation, and integrates the gas-liquid separation and washing processes of hydrogen-oxygen electrolyte into one device, thereby reducing the number of equipment in the overall hydrogen production process by electrolysis of water, reducing the complexity of the overall process, increasing the compactness of the process equipment, and thus improving the overall operating efficiency of the process.

[0007] The first aspect of the present invention provides a gas-liquid separation and washing integrated device for producing hydrogen by electrolysis of water, which comprises a hydrogen-side gas-liquid separation unit, a hydrogen-side washing unit, an oxygen-side gas-liquid separation unit, an oxygen-side washing unit and a pressure balance unit;

[0008] The hydrogen side gas-liquid separation unit is coupled with the hydrogen side washing unit, the oxygen side gas-liquid separation unit is coupled with the oxygen side washing unit, and the hydrogen side gas-liquid separation unit is coupled with the oxygen side gas-liquid separation unit through the pressure balance unit.

[0009] Preferably, the hydrogen side gas-liquid separation unit includes a main hydrogen exhaust pipe 101, a hydrogen cyclone separation chamber 102, a hydrogen electrolyte input pipe 104, a hydrogen gravity separation chamber 105 and a hydrogen electrolyte discharge pipe 107; the hydrogen side scrubbing unit includes a hydrogen scrubbing chamber 108, a hydrogen output pipe 109, an auxiliary hydrogen exhaust pipe 110 and a hydrogen side pure water replenishment pipe 113; the hydrogen side gas-liquid separation unit is coupled to the hydrogen side scrubbing unit through the main hydrogen exhaust pipe 101, the auxiliary hydrogen exhaust pipe 110 and the hydrogen side pure water replenishment pipe 113;

[0010] The oxygen side gas-liquid separation unit includes a main oxygen exhaust pipe 201, an oxygen cyclone separation chamber 202, an oxygen electrolyte input pipe 204, an oxygen gravity separation chamber 205, and an oxygen electrolyte discharge pipe 207; the oxygen side washing unit includes an oxygen washing chamber 208, an oxygen output pipe 209, an auxiliary oxygen exhaust pipe 210, and an oxygen side pure water replenishment pipe 213; the oxygen side gas-liquid separation unit is coupled to the oxygen side washing unit through the main oxygen exhaust pipe 201, the auxiliary oxygen exhaust pipe 210, and the oxygen side pure water replenishment pipe 213;

[0011] The pressure balance unit includes a hydrogen-oxygen pressure balance tube 301, and a mixed liquid column 302 of hydrogen-oxygen electrolyte is retained in the middle of the hydrogen-oxygen pressure balance tube 301. The hydrogen-side gas-liquid separation unit is coupled with the oxygen-side gas-liquid separation unit through the hydrogen-oxygen pressure balance tube 301 of the pressure balance unit.

[0012] Preferably, the main hydrogen exhaust pipe 101 is installed on the top of the hydrogen cyclone separation chamber 102, one end of the main hydrogen exhaust pipe 101 extends into the interior of the hydrogen cyclone separation chamber 102, and the other end is connected to the top of the hydrogen scrubbing chamber 108 and extends into the interior of the hydrogen scrubbing chamber 108 and close to the bottom of the hydrogen scrubbing chamber 108, so that the hydrogen obtained by passing through the hydrogen cyclone separation chamber 102 is passed into the hydrogen scrubbing chamber 108 for washing;

[0013] A hydrogen electrolyte inlet pipe 104 is obliquely and tangentially installed on one side of the cylinder wall of the hydrogen cyclone separation chamber 102, and the hydrogen electrolyte to be separated from the gas and liquid flows tangentially into the hydrogen cyclone separation chamber 102;

[0014] The main oxygen exhaust pipe 201 is installed on the top of the oxygen cyclone separation chamber 202, one end of the main oxygen exhaust pipe 201 extends into the interior of the oxygen cyclone separation chamber 202, and the other end is connected to the top of the oxygen washing chamber 208 and extends into the interior of the oxygen washing chamber 208 and close to the bottom of the oxygen washing chamber 208, so that the oxygen obtained by the oxygen cyclone separation chamber 202 is introduced into the oxygen washing chamber 208 for washing;

[0015] An oxygen electrolyte inlet pipe 204 is obliquely and tangentially installed on one side of the cylinder wall of the oxygen cyclone separation chamber 202, and the oxygen electrolyte to be separated from the gas and liquid flows tangentially into the oxygen cyclone separation chamber 202.

[0016] Preferably, a section of hydrogen manifold 103 is installed on the top of the hydrogen electrolyte inlet pipe 104, and the hydrogen electrolyte inlet pipe 104 is connected to the hydrogen cyclone separation chamber 102 through the hydrogen manifold 103, and a part of the hydrogen separated by gravity is directed to the main hydrogen exhaust pipe 101;

[0017] An oxygen manifold 203 is installed on the top of the oxygen electrolyte input pipe 204. The oxygen electrolyte input pipe 204 is connected to the oxygen cyclone separation chamber 202 through the oxygen manifold 203, and a part of the oxygen separated by gravity is guided to the main oxygen exhaust pipe 201.

[0018] Preferably, a hydrogen side cyclone preventer 106 is installed at the bottom outlet of the hydrogen cyclone separation chamber 102 to eliminate the cyclone state of the hydrogen electrolyte coming out of the hydrogen cyclone separation chamber 102;

[0019] An oxygen-side cyclone preventer 206 is installed at the bottom outlet of the oxygen cyclone separation chamber 202 to eliminate the cyclone state of the oxygen electrolyte coming out of the oxygen cyclone separation chamber 202 .

[0020] Preferably, the top of the hydrogen gravity separation chamber 105 is tightly connected to the lower cylinder wall of the hydrogen cyclone separation chamber 102 , and the bottom outlet of the hydrogen cyclone separation chamber 102 completely extends into the interior of the hydrogen gravity separation chamber 105 .

[0021] The hydrogen side pure water replenishing pipe 113 is installed on one side wall of the hydrogen gravity separation chamber 105, the other end of the hydrogen side pure water replenishing pipe 113 is connected to the bottom of the hydrogen scrubbing chamber 108, and a hydrogen side pure water replenishing valve 112 for controlling pure water replenishment is installed on the hydrogen side pure water replenishing pipe 113;

[0022] The auxiliary hydrogen exhaust pipe 110 is installed on the top of the hydrogen gravity separation chamber 105, and the other end of the auxiliary hydrogen exhaust pipe 110 is connected with the hydrogen scrubbing chamber 108 and extends into the interior thereof, so as to pass the hydrogen separated by gravity in the hydrogen gravity separation chamber 105 into the hydrogen scrubbing chamber 108 for washing; an auxiliary hydrogen exhaust valve 111 for controlling the discharge of hydrogen and preventing the inflow of pure water is installed on the auxiliary hydrogen exhaust pipe 110;

[0023] The hydrogen electrolyte discharge pipe 107 is installed at the bottom of the hydrogen gravity separation chamber 105. The hydrogen electrolyte discharge pipe 107 is installed a distance into the hydrogen gravity separation chamber 105, and forms a groove for settling solid dirt with the bottom cone angle of the hydrogen gravity separation chamber 105;

[0024] The oxygen gravity separation chamber 205 is located at the bottom of the oxygen cyclone separation chamber 202, the top of the oxygen gravity separation chamber 205 is tightly connected to the lower end cylinder wall of the oxygen cyclone separation chamber 202, and the bottom outlet of the oxygen cyclone separation chamber 202 completely extends into the interior of the oxygen gravity separation chamber 205;

[0025] The oxygen side pure water replenishment pipe 213 is installed on one side wall of the oxygen gravity separation chamber 205, the other end of the oxygen side pure water replenishment pipe 213 is connected to the bottom of the oxygen washing chamber 208, and the oxygen side pure water replenishment valve 212 for controlling pure water replenishment is installed on the oxygen side pure water replenishment pipe 213;

[0026] The auxiliary oxygen exhaust pipe 210 is installed on the top of the oxygen gravity separation chamber 205, and the other end of the auxiliary oxygen exhaust pipe 210 is connected with the oxygen washing chamber 208 and extends into the interior thereof, so as to pass the oxygen separated by gravity in the oxygen gravity separation chamber 205 into the oxygen washing chamber 208 for washing; an auxiliary oxygen exhaust valve 211 for controlling the discharge of oxygen and preventing the inflow of pure water is installed on the auxiliary oxygen exhaust pipe 210;

[0027] The oxygen electrolyte discharge pipe 207 is installed at the bottom of the oxygen gravity separation chamber 205. The oxygen electrolyte discharge pipe 207 is installed a distance into the oxygen gravity separation chamber 205 to form a groove for settling solid dirt with the bottom cone angle of the oxygen gravity separation chamber 205.

[0028] Preferably, the hydrogen output pipe 109 is installed on the side wall of the hydrogen scrubbing chamber 108 near the top, for outputting the scrubbed hydrogen;

[0029] The oxygen output pipe 209 is installed on the side wall of the oxygen washing chamber 208 near the top, and is used to output the washed oxygen.

[0030] Preferably, the hydrogen-oxygen pressure balance tube 301 is installed between the hydrogen gravity separation chamber 105 and the oxygen gravity separation chamber 205 and is connected thereto, and a mixed liquid column 302 of a section of hydrogen-oxygen electrolyte is retained in the middle of the hydrogen-oxygen pressure balance tube 301, which is used to reduce the mixing of the hydrogen-oxygen electrolyte and balance the pressure of the hydrogen electrolyte and the oxygen electrolyte.

[0031] Preferably, the hydrogen cyclone separation chamber 102 and the oxygen cyclone separation chamber 202 are cone structures with a certain taper in the lower half;

[0032] The hydrogen gravity separation chamber 105 and the oxygen gravity separation chamber 205 are a conical structure with a diameter greater than the height (that is, the diameter is larger and the body is shorter), and the bottom has a certain taper;

[0033] The entire gas-liquid separation and washing integrated device for producing hydrogen by electrolysis of water is symmetrical about the center of the device itself.

[0034] Preferably, the auxiliary hydrogen exhaust valve 111, the hydrogen side pure water replenishing valve 112, the auxiliary oxygen exhaust valve 211 and the oxygen side pure water replenishing valve 212 can be automatically controlled through a simple circuit by installing liquid level meters in the hydrogen gravity separation chamber 105 and the oxygen gravity separation chamber 205.

[0035] Preferably, the pure water in the hydrogen scrubbing chamber 108 and the oxygen scrubbing chamber 208 can be supplemented from the outside, and the external supplementary pipeline is not drawn in the drawings of the present invention.

[0036] As for the oxygen side gas-liquid separation unit and the oxygen side washing unit, their structure and composition are completely consistent with the above-mentioned hydrogen side gas-liquid separation unit and the hydrogen side washing unit, and their arrangement is symmetrical with the arrangement of the above-mentioned hydrogen side gas-liquid separation unit and the hydrogen side washing unit; the difference is that the working fluids in the hydrogen side gas-liquid separation unit and the hydrogen side washing unit are hydrogen electrolyte and hydrogen, and the working fluids in the oxygen side gas-liquid separation unit and the oxygen side washing unit are oxygen electrolyte and oxygen. The second aspect of the present invention provides an integrated gas-liquid separation and washing method for producing hydrogen by electrolysis of water, using the integrated gas-liquid separation and washing device for producing hydrogen by electrolysis of water as described in the first aspect of the present invention, which comprises:

[0037] The hydrogen separated by the hydrogen-side gas-liquid separation unit enters the hydrogen-side washing unit for washing, and the washed hydrogen is finally discharged from the hydrogen-side washing unit;

[0038] The oxygen separated by the oxygen-side gas-liquid separation unit enters the oxygen-side washing unit for washing, and the washed oxygen is finally discharged from the oxygen-side washing unit;

[0039] The hydrogen-side gas-liquid separation unit and the oxygen-side gas-liquid separation unit balance the pressure through the pressure balance unit to ensure that the pressures of the hydrogen electrolyte and the oxygen electrolyte discharged from the hydrogen-side gas-liquid separation unit and the oxygen-side gas-liquid separation unit are the same.

[0040] Specifically, the gas-liquid separation and washing integrated method for producing hydrogen by electrolysis of water of the present invention is as follows:

[0041] For the hydrogen side gas-liquid separation unit and the hydrogen side washing unit, first, the hydrogen electrolyte mixed with hydrogen flows through the hydrogen electrolyte input pipe 104 and enters the hydrogen separation chamber 102 through the tangential interface to form a hydrogen electrolyte vortex. In this process, a small part of hydrogen is separated in the hydrogen electrolyte input pipe 104 due to the effect of gravity and guided to the inlet of the main hydrogen exhaust pipe 101 through the hydrogen manifold 103. This process is equivalent to the first-level gravity separation of the entire device; the main hydrogen is separated by the hydrogen electrolyte vortex formed in the hydrogen cyclone separation chamber 102, and finally converges to the inlet of the main hydrogen exhaust pipe 101. The two parts of hydrogen emerge from the bottom of the hydrogen washing chamber 108 through the main hydrogen exhaust pipe, and are washed by the pure water stored in the hydrogen washing chamber 108. Finally, the washed hydrogen is output from the hydrogen output pipe 109 of the hydrogen washing chamber 108. The hydrogen electrolyte after separation in the hydrogen cyclone separation chamber 102 still contains a certain amount of hydrogen. This part of the hydrogen electrolyte flows out from the bottom outlet of the hydrogen cyclone separation chamber 102, passes through the hydrogen side cyclone preventer 106 to eliminate the cyclone state, and flows into the hydrogen gravity separation chamber 105 for the second-level gravity separation of the entire device; after the hydrogen separated by the hydrogen gravity separation chamber 105 reaches a certain pressure, the auxiliary hydrogen exhaust valve 111 is opened, so that the hydrogen is discharged from the auxiliary hydrogen exhaust pipe 110 at the top of the hydrogen gravity separation chamber 105 to the hydrogen washing chamber 108 for washing, and the washed hydrogen is finally output through the hydrogen output pipe 109; the hydrogen electrolyte obtained by separation in the hydrogen gravity separation chamber 105 is finally discharged from the hydrogen electrolyte discharge pipe 107. When the liquid level of the hydrogen electrolyte in the hydrogen gravity separation chamber 105 is lower than a certain level, the hydrogen side pure water replenishing valve 112 is opened, and the pure water in the hydrogen washing chamber 108 is replenished into the hydrogen gravity separation chamber 105 through the hydrogen side pure water replenishing pipe 113, and the liquid level of the hydrogen electrolyte is maintained to ensure the hydrogen output of the auxiliary hydrogen exhaust pipe 110.

[0042] For the oxygen-side gas-liquid separation unit and the oxygen-side washing unit, first, the oxygen electrolyte mixed with oxygen flows through the oxygen electrolyte input pipe 204 and enters the oxygen separation chamber 202 through the tangential interface to form an oxygen electrolyte vortex. In this process, a small part of oxygen is separated in the oxygen electrolyte input pipe 204 due to the effect of gravity and is guided to the inlet of the main oxygen exhaust pipe 201 through the oxygen manifold 203. This process is equivalent to the first-level gravity separation of the entire device; the main oxygen is separated by the oxygen electrolyte vortex formed in the oxygen cyclone separation chamber 202, and finally converges to the inlet of the main oxygen exhaust pipe 201. These two parts of oxygen emerge from the bottom of the oxygen washing chamber 208 through the main oxygen exhaust pipe, and are washed by the pure water stored in the oxygen washing chamber 208. Finally, the washed oxygen is output from the oxygen output pipe 209 of the oxygen washing chamber 208. The oxygen electrolyte after separation in the oxygen cyclone separation chamber 202 still contains a certain amount of oxygen. This part of the oxygen electrolyte flows out from the bottom outlet of the oxygen cyclone separation chamber 202, passes through the oxygen-side cyclone preventer 206 to eliminate the cyclone state, and flows into the oxygen gravity separation chamber 205 for the second-level gravity separation of the entire device; after the oxygen separated by the oxygen gravity separation chamber 205 reaches a certain pressure, the auxiliary oxygen exhaust valve 211 is opened, so that the oxygen is discharged from the auxiliary oxygen exhaust pipe 210 at the top of the oxygen gravity separation chamber 205 to the oxygen washing chamber 208 for washing, and the washed oxygen is finally output through the oxygen output pipe 209; the oxygen electrolyte obtained by separation in the oxygen gravity separation chamber 205 is finally discharged from the oxygen electrolyte discharge pipe 207. When the liquid level of the oxygen electrolyte in the oxygen gravity separation chamber 205 is lower than a certain level, the oxygen side pure water replenishing valve 212 is opened, and the pure water in the oxygen washing chamber 208 is replenished into the oxygen gravity separation chamber 205 through the oxygen side pure water replenishing pipe 213, and the liquid level of the oxygen electrolyte is maintained to ensure the oxygen output of the auxiliary oxygen exhaust pipe 210.

[0043] For the pressure balance unit, the hydrogen gravity separation chamber 105 and the oxygen gravity separation chamber 205 are connected by the hydrogen-oxygen pressure balance pipe 301, and the pressure is balanced by the mixed liquid column 302 in the hydrogen-oxygen pressure balance pipe 301, ensuring that the pressures of the hydrogen electrolyte and the oxygen electrolyte discharged from the hydrogen electrolyte discharge pipe 107 and the oxygen electrolyte discharge pipe 207 are the same, which is convenient for subsequent recycling.

[0044] For the oxygen side gas-liquid separation unit and the oxygen side washing unit, the internal working fluid flow conditions and the operating steps of the device are exactly the same as those of the above-mentioned hydrogen side gas-liquid separation unit and the hydrogen side washing unit. The difference is that the hydrogen and oxygen after separation and washing are discharged and collected separately, effectively ensuring that the two gases will not mix and cause accidents.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] 1. The gas-liquid separation and washing integrated device for hydrogen production by water electrolysis of the present invention integrates the gas-liquid separation and washing process of the hydrogen-oxygen electrolyte into one device, reducing the number of equipment in the overall hydrogen production process by water electrolysis, reducing the complexity of the overall process, and increasing the compactness of the process equipment, thereby improving the overall operating efficiency of the process. Hydrogen and oxygen are separated and collected separately at the same time, which satisfies the process requirements and safety specifications for gas-liquid separation of the hydrogen-oxygen electrolyte in the hydrogen production process by water electrolysis, thereby improving the operating efficiency of the entire hydrogen production process.

[0047] 2. The integrated gas-liquid separation and washing device for producing hydrogen by electrolysis of water of the present invention fully combines the characteristics of the cyclone gas-liquid separator and the gravity gas-liquid separator, and organically combines the structures of the two, thereby improving the compactness of the device and the efficiency of gas-liquid separation; it fully utilizes dynamic separation and static separation to make the overall operation of the device more stable, and ensures the process requirements for the same-pressure recovery of hydrogen and oxygen electrolytes.

[0048] 3. Combined with the integrated gas-liquid separation and washing device for producing hydrogen by electrolysis of water of the present invention, the integrated gas-liquid separation and washing method for producing hydrogen by electrolysis of water of the present invention has three stages for the separation process, which includes two stages of gravity separation and one cyclone separation. Taking the hydrogen side gas-liquid separation unit as an example:

[0049] First, the hydrogen electrolyte mixed with hydrogen flows through the hydrogen electrolyte input pipe 104 and enters the hydrogen separation chamber 102 through the tangential interface to form a hydrogen electrolyte vortex. In this process, a small part of hydrogen is separated in the hydrogen electrolyte input pipe 104 due to gravity and guided to the inlet of the main hydrogen exhaust pipe 101 through the hydrogen manifold 103. This process is equivalent to the first-stage gravity separation of the entire device; the main hydrogen is separated by the hydrogen electrolyte vortex formed in the hydrogen cyclone separation chamber 102, and finally converges to the inlet of the main hydrogen exhaust pipe 101. This process is equivalent to cyclone separation; the hydrogen electrolyte after separation in the hydrogen cyclone separation chamber 102 still has a certain amount of hydrogen. This part of the hydrogen electrolyte flows out from the bottom outlet of the hydrogen cyclone separation chamber 102, passes through the hydrogen side cyclone preventer 106 to eliminate the cyclone state, and flows into the hydrogen gravity separation chamber 105 to perform the second-stage gravity separation of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a schematic diagram of the structure of the gas-liquid separation and washing integrated device for producing hydrogen by electrolysis of water according to the present invention;

[0051] The names of the reference numerals in the description of the drawings are as follows: main hydrogen exhaust pipe 101, hydrogen cyclone separation chamber 102, hydrogen manifold 103, hydrogen electrolyte inlet pipe 104, hydrogen gravity separation chamber 105, hydrogen side cyclone preventer 106, hydrogen electrolyte discharge pipe 107, hydrogen scrubbing chamber 108, hydrogen output pipe 109, auxiliary hydrogen exhaust pipe 110, auxiliary hydrogen exhaust valve 111, hydrogen side pure water replenishment valve 112, hydrogen side pure water replenishment pipe 113, main hydrogen exhaust pipe 114, auxiliary hydrogen exhaust valve 115, auxiliary hydrogen exhaust valve 116, auxiliary hydrogen exhaust valve 117, auxiliary hydrogen exhaust valve 118, auxiliary hydrogen exhaust valve 119, auxiliary hydrogen exhaust pipe 120, auxiliary hydrogen exhaust valve 121, auxiliary hydrogen exhaust valve 122, auxiliary hydrogen exhaust valve 123, auxiliary hydrogen exhaust pipe 124, auxiliary hydrogen exhaust valve 125, auxiliary hydrogen exhaust pipe 126, auxiliary hydrogen exhaust valve 127, auxiliary hydrogen exhaust valve 128, auxiliary hydrogen exhaust pipe 129, auxiliary hydrogen exhaust pipe 130, auxiliary hydrogen exhaust pipe 131, auxiliary hydrogen exhaust pipe 132, auxiliary hydrogen exhaust pipe 133, auxiliary hydrogen exhaust pipe 134, auxiliary hydrogen exhaust pipe 135, auxiliary hydrogen exhaust pipe 136, auxiliary hydrogen exhaust pipe 137, auxiliary hydrogen exhaust pipe 138, auxiliary hydrogen exhaust pipe 139, auxiliary hydrogen exhaust pipe 140, auxiliary hydrogen exhaust valve 141, auxiliary hydrogen exhaust valve 142, auxiliary hydrogen exhaust valve 143, auxiliary hydrogen exhaust pipe 144, auxiliary hydrogen exhaust pipe 145, auxiliary hydrogen exhaust pipe 146, auxiliary hydrogen exhaust valve 147, auxiliary hydrogen exhaust valve 148, auxiliary hydrogen exhaust valve 149, auxiliary hydrogen exhaust pipe 149, auxiliary hydrogen exhaust pipe 141, auxiliary hydrogen exhaust pipe 142, auxiliary hydrogen exhaust valve 149, auxiliary hydrogen exhaust Gas exhaust pipe 201, oxygen cyclone separation chamber 202, oxygen manifold 203, oxygen electrolyte input pipe 204, oxygen gravity separation chamber 205, oxygen side cyclone preventer 206, oxygen electrolyte discharge pipe 207, oxygen washing chamber 208, oxygen output pipe 209, auxiliary oxygen exhaust pipe 210, auxiliary oxygen exhaust valve 211, oxygen side pure water replenishment valve 212, oxygen side pure water replenishment pipe 213, hydrogen and oxygen pressure balance pipe 301, mixed liquid column 302. DETAILED DESCRIPTION

[0052] The present invention is further described in detail below in conjunction with embodiments.

[0053] Those skilled in the art will appreciate 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 art or the product specifications are used. If the manufacturer of the materials or equipment used is not specified, they are all conventional products that can be purchased.

[0054] 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 invention 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 herein may include wireless connections.

[0055] 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.

[0056] 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.

[0057] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as those generally understood by those skilled in the art in the art to which the present invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with the meanings in the context of the prior art, and will not be interpreted with idealized or overly formal meanings unless defined as herein.

[0058] Example

[0059] Combine the following Figure 1 A specific implementation scheme of the present invention:

[0060] This embodiment is a gas-liquid separation and washing integrated device for producing hydrogen by electrolysis of water, which includes a hydrogen-side gas-liquid separation unit, a hydrogen-side washing unit, an oxygen-side gas-liquid separation unit, an oxygen-side washing unit and a pressure balance unit;

[0061] The hydrogen side gas-liquid separation unit is coupled with the hydrogen side washing unit, the oxygen side gas-liquid separation unit is coupled with the oxygen side washing unit, and the hydrogen side gas-liquid separation unit is coupled with the oxygen side gas-liquid separation unit through the pressure balance unit.

[0062] The hydrogen side gas-liquid separation unit includes a main hydrogen exhaust pipe 101, a hydrogen cyclone separation chamber 102, a hydrogen electrolyte input pipe 104, a hydrogen gravity separation chamber 105 and a hydrogen electrolyte discharge pipe 107; the hydrogen side scrubbing unit includes a hydrogen scrubbing chamber 108, a hydrogen output pipe 109, an auxiliary hydrogen exhaust pipe 110 and a hydrogen side pure water replenishment pipe 113; the hydrogen side gas-liquid separation unit is coupled to the hydrogen side scrubbing unit through the main hydrogen exhaust pipe 101, the auxiliary hydrogen exhaust pipe 110 and the hydrogen side pure water replenishment pipe 113;

[0063] The oxygen side gas-liquid separation unit includes a main oxygen exhaust pipe 201, an oxygen cyclone separation chamber 202, an oxygen electrolyte input pipe 204, an oxygen gravity separation chamber 205, and an oxygen electrolyte discharge pipe 207; the oxygen side washing unit includes an oxygen washing chamber 208, an oxygen output pipe 209, an auxiliary oxygen exhaust pipe 210, and an oxygen side pure water replenishment pipe 213; the oxygen side gas-liquid separation unit is coupled to the oxygen side washing unit through the main oxygen exhaust pipe 201, the auxiliary oxygen exhaust pipe 210, and the oxygen side pure water replenishment pipe 213;

[0064] The pressure balance unit includes a hydrogen-oxygen pressure balance tube 301, and a mixed liquid column 302 of hydrogen-oxygen electrolyte is retained in the middle of the hydrogen-oxygen pressure balance tube 301. The hydrogen-side gas-liquid separation unit is coupled with the oxygen-side gas-liquid separation unit through the hydrogen-oxygen pressure balance tube 301 of the pressure balance unit.

[0065] The main hydrogen exhaust pipe 101 is installed on the top of the hydrogen cyclone separation chamber 102, one end of the main hydrogen exhaust pipe 101 extends into the interior of the hydrogen cyclone separation chamber 102, and the other end is connected to the top of the hydrogen scrubbing chamber 108 and extends into the interior of the hydrogen scrubbing chamber 108 and close to the bottom of the hydrogen scrubbing chamber 108, so that the hydrogen obtained by passing through the hydrogen cyclone separation chamber 102 is passed into the hydrogen scrubbing chamber 108 for washing;

[0066] A hydrogen electrolyte inlet pipe 104 is obliquely and tangentially installed on one side of the cylinder wall of the hydrogen cyclone separation chamber 102, and the hydrogen electrolyte to be separated from the gas and liquid flows tangentially into the hydrogen cyclone separation chamber 102;

[0067] The main oxygen exhaust pipe 201 is installed on the top of the oxygen cyclone separation chamber 202, one end of the main oxygen exhaust pipe 201 extends into the interior of the oxygen cyclone separation chamber 202, and the other end is connected to the top of the oxygen washing chamber 208 and extends into the interior of the oxygen washing chamber 208 and close to the bottom of the oxygen washing chamber 208, so that the oxygen obtained by the oxygen cyclone separation chamber 202 is introduced into the oxygen washing chamber 208 for washing;

[0068] An oxygen electrolyte inlet pipe 204 is obliquely and tangentially installed on one side of the cylinder wall of the oxygen cyclone separation chamber 202, and the oxygen electrolyte to be separated from the gas and liquid flows tangentially into the oxygen cyclone separation chamber 202.

[0069] A section of hydrogen manifold 103 is installed on the top of the hydrogen electrolyte inlet pipe 104. The hydrogen electrolyte inlet pipe 104 is connected to the hydrogen cyclone separation chamber 102 through the hydrogen manifold 103, and a part of the hydrogen separated by gravity is directed to the main hydrogen exhaust pipe 101;

[0070] An oxygen manifold 203 is installed on the top of the oxygen electrolyte input pipe 204. The oxygen electrolyte input pipe 204 is connected to the oxygen cyclone separation chamber 202 through the oxygen manifold 203, and a part of the oxygen separated by gravity is guided to the main oxygen exhaust pipe 201.

[0071] A hydrogen side cyclone preventer 106 is installed at the bottom outlet of the hydrogen cyclone separation chamber 102 to eliminate the cyclone state of the hydrogen electrolyte coming out of the hydrogen cyclone separation chamber 102;

[0072] An oxygen-side cyclone preventer 206 is installed at the bottom outlet of the oxygen cyclone separation chamber 202 to eliminate the cyclone state of the oxygen electrolyte coming out of the oxygen cyclone separation chamber 202 .

[0073] The top of the hydrogen gravity separation chamber 105 is tightly connected to the lower end wall of the hydrogen cyclone separation chamber 102 , and the bottom outlet of the hydrogen cyclone separation chamber 102 completely extends into the interior of the hydrogen gravity separation chamber 105 .

[0074] The hydrogen side pure water replenishing pipe 113 is installed on one side wall of the hydrogen gravity separation chamber 105, the other end of the hydrogen side pure water replenishing pipe 113 is connected to the bottom of the hydrogen scrubbing chamber 108, and a hydrogen side pure water replenishing valve 112 for controlling pure water replenishment is installed on the hydrogen side pure water replenishing pipe 113;

[0075] The auxiliary hydrogen exhaust pipe 110 is installed on the top of the hydrogen gravity separation chamber 105, and the other end of the auxiliary hydrogen exhaust pipe 110 is connected with the hydrogen scrubbing chamber 108 and extends into the interior thereof, so as to pass the hydrogen separated by gravity in the hydrogen gravity separation chamber 105 into the hydrogen scrubbing chamber 108 for washing; an auxiliary hydrogen exhaust valve 111 for controlling the discharge of hydrogen and preventing the inflow of pure water is installed on the auxiliary hydrogen exhaust pipe 110;

[0076] The hydrogen electrolyte discharge pipe 107 is installed at the bottom of the hydrogen gravity separation chamber 105. The hydrogen electrolyte discharge pipe 107 is installed a distance into the hydrogen gravity separation chamber 105, and forms a groove for settling solid dirt with the bottom cone angle of the hydrogen gravity separation chamber 105;

[0077] The oxygen gravity separation chamber 205 is located at the bottom of the oxygen cyclone separation chamber 202, the top of the oxygen gravity separation chamber 205 is tightly connected to the lower end cylinder wall of the oxygen cyclone separation chamber 202, and the bottom outlet of the oxygen cyclone separation chamber 202 completely extends into the interior of the oxygen gravity separation chamber 205;

[0078] The oxygen side pure water replenishment pipe 213 is installed on one side wall of the oxygen gravity separation chamber 205, the other end of the oxygen side pure water replenishment pipe 213 is connected to the bottom of the oxygen washing chamber 208, and the oxygen side pure water replenishment valve 212 for controlling pure water replenishment is installed on the oxygen side pure water replenishment pipe 213;

[0079] The auxiliary oxygen exhaust pipe 210 is installed on the top of the oxygen gravity separation chamber 205, and the other end of the auxiliary oxygen exhaust pipe 210 is connected with the oxygen washing chamber 208 and extends into the interior thereof, so as to pass the oxygen separated by gravity in the oxygen gravity separation chamber 205 into the oxygen washing chamber 208 for washing; an auxiliary oxygen exhaust valve 211 for controlling the discharge of oxygen and preventing the inflow of pure water is installed on the auxiliary oxygen exhaust pipe 210;

[0080] The oxygen electrolyte discharge pipe 207 is installed at the bottom of the oxygen gravity separation chamber 205. The oxygen electrolyte discharge pipe 207 is installed a distance into the oxygen gravity separation chamber 205 to form a groove for settling solid dirt with the bottom cone angle of the oxygen gravity separation chamber 205.

[0081] The hydrogen output pipe 109 is installed on the side wall of the hydrogen scrubbing chamber 108 near the top, and is used to output the scrubbed hydrogen;

[0082] The oxygen output pipe 209 is installed on the side wall of the oxygen washing chamber 208 near the top, and is used to output the washed oxygen.

[0083] The hydrogen-oxygen pressure balance pipe 301 is installed between the hydrogen gravity separation chamber 105 and the oxygen gravity separation chamber 205 and is connected. A mixed liquid column 302 of a section of hydrogen and oxygen electrolyte is retained in the middle of the hydrogen-oxygen pressure balance pipe 301 to reduce the mixing of the hydrogen and oxygen electrolytes and balance the pressures of the hydrogen electrolyte and the oxygen electrolyte.

[0084] The hydrogen cyclone separation chamber 102 and the oxygen cyclone separation chamber 202 are cone structures with a certain taper in the lower half;

[0085] The hydrogen gravity separation chamber 105 and the oxygen gravity separation chamber 205 are a conical structure with a diameter greater than the height (that is, the diameter is larger and the body is shorter), and the bottom has a certain taper;

[0086] The entire gas-liquid separation and washing integrated device for producing hydrogen by electrolysis of water is symmetrical about the center of the device itself.

[0087] The auxiliary hydrogen exhaust valve 111, the hydrogen side pure water replenishing valve 112, the auxiliary oxygen exhaust valve 211 and the oxygen side pure water replenishing valve 212 can be automatically controlled through a simple circuit by installing liquid level meters in the hydrogen gravity separation chamber 105 and the oxygen gravity separation chamber 205.

[0088] The pure water in the hydrogen scrubbing chamber 108 and the oxygen scrubbing chamber 208 can be supplemented from the outside, and the external supplementary pipeline is not drawn in the drawings of the present invention.

[0089] As for the oxygen side gas-liquid separation unit and the oxygen side washing unit, their structure and composition are exactly the same as those of the above-mentioned hydrogen side gas-liquid separation unit and the hydrogen side washing unit, and their arrangement is symmetrical with that of the above-mentioned hydrogen side gas-liquid separation unit and the hydrogen side washing unit; the difference is that the working fluids in the hydrogen side gas-liquid separation unit and the hydrogen side washing unit are hydrogen electrolyte and hydrogen, and the working fluids in the oxygen side gas-liquid separation unit and the oxygen side washing unit are oxygen electrolyte and oxygen.

[0090] Combination Figure 1 The working principle of the device of the present invention is described as follows:

[0091] The integrated gas-liquid separation and washing method for producing hydrogen by electrolysis of water uses the integrated gas-liquid separation and washing device for producing hydrogen by electrolysis of water, which comprises: hydrogen separated by a hydrogen-side gas-liquid separation unit enters a hydrogen-side washing unit for washing, and finally the washed hydrogen is discharged from the hydrogen-side washing unit;

[0092] The oxygen separated by the oxygen-side gas-liquid separation unit enters the oxygen-side washing unit for washing, and the washed oxygen is finally discharged from the oxygen-side washing unit;

[0093] The hydrogen-side gas-liquid separation unit and the oxygen-side gas-liquid separation unit balance the pressure through the pressure balance unit to ensure that the pressures of the hydrogen electrolyte and the oxygen electrolyte discharged from the hydrogen-side gas-liquid separation unit and the oxygen-side gas-liquid separation unit are the same.

[0094] Specifically, the gas-liquid separation and washing integrated method for producing hydrogen by electrolysis of water of the present invention is as follows:

[0095] For the hydrogen side gas-liquid separation unit and the hydrogen side washing unit, first, the hydrogen electrolyte mixed with hydrogen flows through the hydrogen electrolyte input pipe 104 and enters the hydrogen separation chamber 102 through the tangential interface to form a hydrogen electrolyte vortex. In this process, a small part of hydrogen is separated in the hydrogen electrolyte input pipe 104 due to the effect of gravity and guided to the inlet of the main hydrogen exhaust pipe 101 through the hydrogen manifold 103. This process is equivalent to the first-level gravity separation of the entire device; the main hydrogen is separated by the hydrogen electrolyte vortex formed in the hydrogen cyclone separation chamber 102, and finally converges to the inlet of the main hydrogen exhaust pipe 101. The two parts of hydrogen emerge from the bottom of the hydrogen washing chamber 108 through the main hydrogen exhaust pipe, and are washed by the pure water stored in the hydrogen washing chamber 108. Finally, the washed hydrogen is output from the hydrogen output pipe 109 of the hydrogen washing chamber 108. The hydrogen electrolyte after separation in the hydrogen cyclone separation chamber 102 still contains a certain amount of hydrogen. This part of the hydrogen electrolyte flows out from the bottom outlet of the hydrogen cyclone separation chamber 102, passes through the hydrogen side cyclone preventer 106 to eliminate the cyclone state, and flows into the hydrogen gravity separation chamber 105 for the second-level gravity separation of the entire device; after the hydrogen separated by the hydrogen gravity separation chamber 105 reaches a certain pressure, the auxiliary hydrogen exhaust valve 111 is opened, so that the hydrogen is discharged from the auxiliary hydrogen exhaust pipe 110 at the top of the hydrogen gravity separation chamber 105 to the hydrogen washing chamber 108 for washing, and the washed hydrogen is finally output through the hydrogen output pipe 109; the hydrogen electrolyte obtained by separation in the hydrogen gravity separation chamber 105 is finally discharged from the hydrogen electrolyte discharge pipe 107. When the liquid level of the hydrogen electrolyte in the hydrogen gravity separation chamber 105 is lower than a certain level, the hydrogen side pure water replenishing valve 112 is opened, and the pure water in the hydrogen washing chamber 108 is replenished into the hydrogen gravity separation chamber 105 through the hydrogen side pure water replenishing pipe 113, and the liquid level of the hydrogen electrolyte is maintained to ensure the hydrogen output of the auxiliary hydrogen exhaust pipe 110.

[0096] For the oxygen-side gas-liquid separation unit and the oxygen-side washing unit, first, the oxygen electrolyte mixed with oxygen flows through the oxygen electrolyte input pipe 204 and enters the oxygen separation chamber 202 through the tangential interface to form an oxygen electrolyte vortex. In this process, a small part of oxygen is separated in the oxygen electrolyte input pipe 204 due to the effect of gravity and is guided to the inlet of the main oxygen exhaust pipe 201 through the oxygen manifold 203. This process is equivalent to the first-level gravity separation of the entire device; the main oxygen is separated by the oxygen electrolyte vortex formed in the oxygen cyclone separation chamber 202, and finally converges to the inlet of the main oxygen exhaust pipe 201. These two parts of oxygen emerge from the bottom of the oxygen washing chamber 208 through the main oxygen exhaust pipe, and are washed by the pure water stored in the oxygen washing chamber 208. Finally, the washed oxygen is output from the oxygen output pipe 209 of the oxygen washing chamber 208. The oxygen electrolyte after separation in the oxygen cyclone separation chamber 202 still contains a certain amount of oxygen. This part of the oxygen electrolyte flows out from the bottom outlet of the oxygen cyclone separation chamber 202, passes through the oxygen-side cyclone preventer 206 to eliminate the cyclone state, and flows into the oxygen gravity separation chamber 205 for the second-level gravity separation of the entire device; after the oxygen separated by the oxygen gravity separation chamber 205 reaches a certain pressure, the auxiliary oxygen exhaust valve 211 is opened, so that the oxygen is discharged from the auxiliary oxygen exhaust pipe 210 at the top of the oxygen gravity separation chamber 205 to the oxygen washing chamber 208 for washing, and the washed oxygen is finally output through the oxygen output pipe 209; the oxygen electrolyte obtained by separation in the oxygen gravity separation chamber 205 is finally discharged from the oxygen electrolyte discharge pipe 207. When the liquid level of the oxygen electrolyte in the oxygen gravity separation chamber 205 is lower than a certain level, the oxygen side pure water replenishing valve 212 is opened, and the pure water in the oxygen washing chamber 208 is replenished into the oxygen gravity separation chamber 205 through the oxygen side pure water replenishing pipe 213, and the liquid level of the oxygen electrolyte is maintained to ensure the oxygen output of the auxiliary oxygen exhaust pipe 210.

[0097] For the pressure balance unit, the hydrogen gravity separation chamber 105 and the oxygen gravity separation chamber 205 are connected by the hydrogen-oxygen pressure balance pipe 301, and the pressure is balanced by the mixed liquid column 302 in the hydrogen-oxygen pressure balance pipe 301, ensuring that the pressures of the hydrogen electrolyte and the oxygen electrolyte discharged from the hydrogen electrolyte discharge pipe 107 and the oxygen electrolyte discharge pipe 207 are the same, which is convenient for subsequent recycling.

[0098] For the oxygen side gas-liquid separation unit and the oxygen side washing unit, the internal working fluid flow conditions and the operating steps of the device are exactly the same as those of the above-mentioned hydrogen side gas-liquid separation unit and the hydrogen side washing unit. The difference is that the hydrogen and oxygen after separation and washing are discharged and collected separately, effectively ensuring that the two gases will not mix and cause accidents.

Claims

1. A gas-liquid separation and washing integrated device for producing hydrogen by electrolysis of water, characterized in that: It includes a hydrogen side gas-liquid separation unit, a hydrogen side washing unit, an oxygen side gas-liquid separation unit, an oxygen side washing unit and a pressure balance unit; The hydrogen side gas-liquid separation unit is coupled with the hydrogen side washing unit, the oxygen side gas-liquid separation unit is coupled with the oxygen side washing unit, and the hydrogen side gas-liquid separation unit is coupled with the oxygen side gas-liquid separation unit through the pressure balance unit.

2. The integrated gas-liquid separation and washing device for producing hydrogen by electrolysis of water according to claim 1, characterized in that: The hydrogen side gas-liquid separation unit comprises a main hydrogen exhaust pipe (101), a hydrogen cyclone separation chamber (102), a hydrogen electrolyte input pipe (104), a hydrogen gravity separation chamber (105) and a hydrogen electrolyte discharge pipe (107); the hydrogen side scrubbing unit comprises a hydrogen scrubbing chamber (108), a hydrogen output pipe (109), a secondary hydrogen exhaust pipe (110) and a hydrogen side pure water replenishment pipe (113); the hydrogen side gas-liquid separation unit is coupled to the hydrogen side scrubbing unit via the main hydrogen exhaust pipe (101), the secondary hydrogen exhaust pipe (110) and the hydrogen side pure water replenishment pipe (113); The oxygen side gas-liquid separation unit comprises a main oxygen exhaust pipe (201), an oxygen cyclone separation chamber (202), an oxygen electrolyte input pipe (204), an oxygen gravity separation chamber (205), and an oxygen electrolyte discharge pipe (207); the oxygen side washing unit comprises an oxygen washing chamber (208), an oxygen output pipe (209), an auxiliary oxygen exhaust pipe (210), and an oxygen side pure water replenishment pipe (213); the oxygen side gas-liquid separation unit is coupled to the oxygen side washing unit via the main oxygen exhaust pipe (201), the auxiliary oxygen exhaust pipe (210), and the oxygen side pure water replenishment pipe (213); The pressure balance unit comprises a hydrogen-oxygen pressure balance pipe (301), wherein a section of a mixed liquid column (302) of hydrogen-oxygen electrolyte is retained in the middle of the hydrogen-oxygen pressure balance pipe (301), and the hydrogen-side gas-liquid separation unit is coupled with the oxygen-side gas-liquid separation unit via the hydrogen-oxygen pressure balance pipe (301) of the pressure balance unit.

3. The integrated gas-liquid separation and washing device for producing hydrogen by electrolysis of water according to claim 2, characterized in that: The main hydrogen exhaust pipe (101) is installed on the top of the hydrogen cyclone separation chamber (102), one end of the main hydrogen exhaust pipe (101) extends into the interior of the hydrogen cyclone separation chamber (102), and the other end is connected to the top of the hydrogen scrubbing chamber (108) and extends into the interior of the hydrogen scrubbing chamber (108) and close to the bottom of the hydrogen scrubbing chamber (108), so that the hydrogen obtained by passing through the hydrogen cyclone separation chamber (102) is passed into the hydrogen scrubbing chamber (108) for scrubbing; A hydrogen electrolyte inlet pipe (104) is obliquely and tangentially installed on one side of the cylinder wall of the hydrogen cyclone separation chamber (102), and the hydrogen electrolyte to be separated from the gas and liquid flows tangentially into the hydrogen cyclone separation chamber (102); The main oxygen exhaust pipe (201) is installed on the top of the oxygen cyclone separation chamber (202), one end of the main oxygen exhaust pipe (201) extends into the interior of the oxygen cyclone separation chamber (202), and the other end is connected to the top of the oxygen washing chamber (208) and extends into the interior of the oxygen washing chamber (208) and close to the bottom of the oxygen washing chamber (208), so that the oxygen obtained by passing through the oxygen cyclone separation chamber (202) is introduced into the oxygen washing chamber (208) for washing; An oxygen electrolyte inlet pipe (204) is obliquely and tangentially installed on one side of the cylinder wall of the oxygen cyclone separation chamber (202), and the oxygen electrolyte to be separated into gas and liquid flows tangentially into the oxygen cyclone separation chamber (202).

4. The integrated gas-liquid separation and washing device for producing hydrogen by electrolysis of water according to claim 2, characterized in that: A section of hydrogen manifold (103) is installed on the top of the hydrogen electrolyte input pipe (104), and the hydrogen electrolyte input pipe (104) is connected to the hydrogen cyclone separation chamber (102) through the hydrogen manifold (103), and guides the hydrogen separated by gravity to the main hydrogen exhaust pipe (101); An oxygen manifold (203) is installed on the top of the oxygen electrolyte input pipe (204). The oxygen electrolyte input pipe (204) is connected to the oxygen cyclone separation chamber (202) through the oxygen manifold (203) to guide the oxygen separated by gravity to the main oxygen exhaust pipe (201).

5. The integrated gas-liquid separation and washing device for producing hydrogen by electrolysis of water according to claim 2, characterized in that: A hydrogen side cyclone preventer (106) is installed at the bottom outlet of the hydrogen cyclone separation chamber (102) to eliminate the cyclone state of the hydrogen electrolyte coming out of the hydrogen cyclone separation chamber (102); An oxygen side cyclone preventer (206) is installed at the bottom outlet of the oxygen cyclone separation chamber (202) to eliminate the cyclone state of the oxygen electrolyte coming out of the oxygen cyclone separation chamber (202).

6. The integrated gas-liquid separation and washing device for producing hydrogen by electrolysis of water according to claim 2, characterized in that: The top of the hydrogen gravity separation chamber (105) is tightly connected to the lower end wall of the hydrogen cyclone separation chamber (102), and the bottom outlet of the hydrogen cyclone separation chamber (102) completely extends into the interior of the hydrogen gravity separation chamber (105); The hydrogen side pure water replenishing pipe (113) is installed on one side wall of the hydrogen gravity separation chamber (105), the other end of the hydrogen side pure water replenishing pipe (113) is connected to the bottom of the hydrogen scrubbing chamber (108), and a hydrogen side pure water replenishing valve (112) for controlling pure water replenishment is installed on the hydrogen side pure water replenishing pipe (113); The auxiliary hydrogen exhaust pipe (110) is installed on the top of the hydrogen gravity separation chamber (105); the other end of the auxiliary hydrogen exhaust pipe (110) is connected to the hydrogen scrubbing chamber (108) and extends into the interior thereof, and is used to pass the hydrogen separated by gravity in the hydrogen gravity separation chamber (105) into the hydrogen scrubbing chamber (108) for washing; an auxiliary hydrogen exhaust valve (111) for controlling the discharge of hydrogen and preventing the inflow of pure water is installed on the auxiliary hydrogen exhaust pipe (110); The bottom of the hydrogen gravity separation chamber (105) is provided with the hydrogen electrolyte discharge pipe (107), and the hydrogen electrolyte discharge pipe (107) is installed a certain distance into the hydrogen gravity separation chamber (105), and forms a groove capable of settling solid dirt with the bottom cone angle of the hydrogen gravity separation chamber (105); The oxygen gravity separation chamber (205) is located at the bottom of the oxygen cyclone separation chamber (202), the top of the oxygen gravity separation chamber (205) is tightly connected to the lower end cylinder wall of the oxygen cyclone separation chamber (202), and the bottom outlet of the oxygen cyclone separation chamber (202) completely extends into the interior of the oxygen gravity separation chamber (205); The oxygen side pure water replenishment pipe (213) is installed on one side wall of the oxygen gravity separation chamber (205), the other end of the oxygen side pure water replenishment pipe (213) is connected to the bottom of the oxygen washing chamber (208), and the oxygen side pure water replenishment valve (212) for controlling pure water replenishment is installed on the oxygen side pure water replenishment pipe (213); The auxiliary oxygen exhaust pipe (210) is installed on the top of the oxygen gravity separation chamber (205); the other end of the auxiliary oxygen exhaust pipe (210) is connected to the oxygen washing chamber (208) and extends into the interior thereof, and is used to pass the oxygen separated by gravity in the oxygen gravity separation chamber (205) into the oxygen washing chamber (208) for washing; an auxiliary oxygen exhaust valve (211) for controlling the discharge of oxygen and preventing the inflow of pure water is installed on the auxiliary oxygen exhaust pipe (210); The oxygen electrolyte discharge pipe (207) is installed at the bottom of the oxygen gravity separation chamber (205). The oxygen electrolyte discharge pipe (207) is installed a certain distance into the oxygen gravity separation chamber (205) and forms a groove for settling solid dirt with the bottom cone angle of the oxygen gravity separation chamber (205).

7. The integrated gas-liquid separation and washing device for producing hydrogen by electrolysis of water according to claim 2, characterized in that: The hydrogen output pipe (109) is installed on the side wall of the hydrogen scrubbing chamber (108) near the top, and is used to output the scrubbed hydrogen; The oxygen output pipe (209) is installed on the side wall of the oxygen washing chamber (208) near the top, and is used to output the washed oxygen.

8. The integrated gas-liquid separation and washing device for producing hydrogen by electrolysis of water according to claim 2, characterized in that: The hydrogen-oxygen pressure balance pipe (301) is installed between the hydrogen gravity separation chamber (105) and the oxygen gravity separation chamber (205) and is in communication with each other. A section of the mixed liquid column (302) of hydrogen-oxygen electrolyte is retained in the middle of the hydrogen-oxygen pressure balance pipe (301) to reduce the mixing of the hydrogen-oxygen electrolyte and balance the pressure of the hydrogen electrolyte and the oxygen electrolyte.

9. The integrated gas-liquid separation and washing device for producing hydrogen by electrolysis of water according to claim 2, characterized in that: The hydrogen cyclone separation chamber (102) and the oxygen cyclone separation chamber (202) are cone structures with a certain taper in the lower half; The hydrogen gravity separation chamber (105) and the oxygen gravity separation chamber (205) are a conical cylinder structure in which the cylinder diameter is greater than the cylinder height and the bottom has a certain taper; The entire gas-liquid separation and washing integrated device for producing hydrogen by electrolysis of water is symmetrical about the center of the device itself.

10. A gas-liquid separation and washing integrated method for producing hydrogen by electrolysis of water, characterized in that: The gas-liquid separation and washing integrated device for producing hydrogen by electrolysis of water according to any one of claims 1 to 9 comprises: The hydrogen separated by the hydrogen-side gas-liquid separation unit enters the hydrogen-side washing unit for washing, and the washed hydrogen is finally discharged from the hydrogen-side washing unit; The oxygen separated by the oxygen-side gas-liquid separation unit enters the oxygen-side washing unit for washing, and the washed oxygen is finally discharged from the oxygen-side washing unit; The hydrogen-side gas-liquid separation unit and the oxygen-side gas-liquid separation unit balance the pressure through the pressure balance unit to ensure that the pressures of the hydrogen electrolyte and the oxygen electrolyte discharged from the hydrogen-side gas-liquid separation unit and the oxygen-side gas-liquid separation unit are the same.

Images