Diaphragm-free electrolytic cell using Tesla valve runner

Abstract

The diaphragm-free electrolytic cell using the Tesla valve flow channel comprises an electrolytic cell body, a liquid inlet is formed in the side wall of the electrolytic cell body, and a middle layer flow channel is formed in the position, opposite to the liquid inlet, of the interior of the electrolytic cell body; a cathode chamber and an anode chamber are arranged on the two sides of the middle-layer flow channel in the electrolytic cell body respectively, the cathode chamber is communicated with the middle-layer flow channel in an opposite mode, the anode chamber is communicated with the middle-layer flow channel in an opposite mode, and the middle-layer flow channel is a one-way flow channel. On the premise that an expensive and easily-polluted ion exchange membrane is not used, through the reasonable design of the electrolyte flow channel and the electrode, the gas produced by the anode and the gas produced by the cathode are separated by utilizing the flow of the electrolyte, so that the risk of explosion caused by mixing of the gas produced by the anode and the gas produced by the cathode is avoided.

Description

Technical Field

[0001] The present application relates to the field of oilfield produced water, and in particular to a diaphragmless electrolyzer using a Tesla valve flow channel. Background Art

[0002] The large-scale use of pollution-free, high-energy-density hydrogen energy is one of the necessary ways to achieve carbon peak and carbon neutrality as soon as possible. Clean green hydrogen energy can be produced by electrolyzing water with clean green electricity. The process flow of water electrolysis hydrogen production technology is simple, basically pollution-free and has a high energy conversion efficiency. It is one of the large-scale hydrogen production technologies that has attracted much attention. At present, the mainstream water electrolysis hydrogen production technologies can be divided into four categories: alkaline water electrolysis hydrogen production, proton exchange membrane water electrolysis hydrogen production, solid oxide water electrolysis hydrogen production and anion exchange membrane water electrolysis hydrogen production. There are differences in the maturity of these four types of hydrogen production technologies, but without exception, they have high requirements for the water quality of electrolyzed water, and can only use purified water as raw material. However, at a time when water resources are becoming increasingly scarce, it will be of great significance if it is possible to directly electrolyze wastewater and produce green hydrogen.

[0003] Oil production generates large amounts of produced water containing organic matter and salt. Faced with stringent environmental regulations, produced water from oil and gas fields must be treated to meet discharge standards before it can be discharged. Traditional water treatment methods consume significant amounts of energy and chemicals, making them both uneconomical and environmentally unfriendly. Therefore, the use of electrolysis to treat oilfield produced water would be of significant significance.

[0004] Hydrogen production by alkaline water electrolysis, proton exchange membrane electrolysis, and anion exchange membrane electrolysis all require a diaphragm or ion exchange membrane to separate the anode and cathode from the gas production. However, due to the numerous organic pollutants present in oilfield produced water, the membranes in electrolyzers with diaphragms will inevitably be contaminated by the organic matter in the produced water, causing rapid ignition. Therefore, oilfield produced water electrolysis requires the use of diaphragm-free electrolyzers. Furthermore, diaphragms for water electrolysis are generally expensive and have significant membrane resistance. Therefore, electrolyzers with diaphragm-free designs offer significant advantages in construction and operating costs.

[0005] However, due to the single-chamber design of the diaphragmless electrolyzer, the gases produced by the anode and cathode may mix, posing an explosion risk. Summary of the Invention

[0006] In order to avoid the risk of explosion due to mixing of gases produced by the anode and cathode by using the flow of electrolyte through reasonable design of electrolyte flow channels and electrodes without using expensive and easily contaminated ion exchange membranes, the present application provides a diaphragm-free electrolyzer using a Tesla valve flow channel.

[0007] This application provides a diaphragmless electrolyzer using a Tesla valve flow channel, which adopts the following technical solutions:

[0008] A diaphragmless electrolyzer using a Tesla valve flow channel includes an electrolyzer body, a liquid inlet is provided on the side wall of the electrolyzer body, an intermediate layer flow channel is arranged inside the electrolyzer body relative to the position of the liquid inlet, a cathode chamber and an anode chamber are respectively arranged on both sides of the intermediate layer flow channel inside the electrolyzer body, the cathode chamber is relatively connected to the intermediate layer flow channel, the anode chamber is relatively connected to the intermediate layer flow channel, and the intermediate layer flow channel is a unidirectional flow channel.

[0009] By adopting the above technical solution, the electrolyte is introduced into the interior of the electrolytic cell body from the liquid inlet, and the electrolyte enters the cathode chamber and the anode chamber on both sides from the middle layer flow channel for electrolysis. The middle layer flow channel is a one-way flow channel, which reduces the gas after electrolysis in the cathode chamber and the anode chamber returning to the interior of the middle layer flow channel to produce a mixture of anode and cathode gases and cause explosions.

[0010] Optionally, a cathode is fixedly connected to the side wall of the electrolytic cell body relative to the position of the cathode chamber, and the cathode divides the cathode chamber into a cathode liquid inlet part and a cathode decomposition part. The cathode liquid inlet part is located on the side of the cathode close to the middle layer flow channel, and the cathode decomposition part is located on the side of the cathode away from the middle layer flow channel.

[0011] Optionally, a cathode gas outlet is provided on the side wall of the electrolytic cell body at a position relative to the cathode decomposition part, and the cathode gas outlet relatively connects the outside with the interior of the cathode decomposition part.

[0012] Optionally, a cathode-side gas-liquid separator is provided on the outside of the electrolytic cell body at a position relative to the cathode gas outlet.

[0013] Optionally, an anode is fixedly connected to the side wall of the electrolytic cell body relative to the position of the anode chamber, and the anode divides the anode chamber into an anode liquid inlet part and an anode decomposition part. The anode liquid inlet part is located on the side of the anode close to the intermediate layer flow channel, and the anode decomposition part is located on the side of the anode away from the intermediate layer flow channel.

[0014] Optionally, an anode gas outlet is provided on the side wall of the electrolytic cell body at a position relative to the anode decomposition part, and the anode gas outlet relatively connects the outside with the interior of the anode decomposition part.

[0015] Optionally, the length of the cathode gas outlet is not greater than the length of the cathode decomposition part, and the length of the anode gas outlet is not greater than the length of the anode decomposition part.

[0016] Optionally, an anode-side gas-liquid separator is provided on the outside of the electrolytic cell body at a position relative to the anode gas outlet.

[0017] Optionally, the intermediate layer flow channel is arranged along the width direction of the electrolytic cell body, one end of the intermediate layer flow channel is relatively connected to the liquid inlet, a first unit Tesla valve flow channel is provided on the side of the intermediate layer flow channel close to the cathode chamber, and a second unit Tesla valve flow channel is provided on the side of the intermediate layer flow channel close to the anode chamber, one end of the first unit Tesla valve flow channel is relatively connected to the intermediate layer flow channel, and the other end of the first unit Tesla valve flow channel is relatively connected to the cathode chamber, one end of the second unit Tesla valve flow channel is relatively connected to the intermediate layer flow channel, and the other end of the second unit Tesla valve flow channel is relatively connected to the anode chamber.

[0018] Optionally, the first unit Tesla valve flow channel includes a first branch flow channel, the first branch flow channel is relatively connected to the intermediate layer flow channel, and a first basic Tesla valve flow channel is arranged on the side of the first branch flow channel away from the intermediate layer flow channel. Multiple first basic Tesla valve flow channels are arranged along the width direction, and two adjacent first basic Tesla valve flow channels are relatively connected.

[0019] Optionally, the first basic Tesla valve flow channel includes a first basic flow channel, the inclination direction of the first basic flow channel is opposite to that of the first branch flow channel, a first connecting flow channel is opened at one end of the first basic flow channel away from the intermediate layer flow channel and the center point of the first basic flow channel, the first connecting flow channel is relatively connected to the first basic flow channel, a first arc flow channel is opened at the end of the first connecting flow channel, one end of the first arc flow channel is relatively connected to the first connecting flow channel, and the other end of the first arc flow channel is relatively connected to the first basic flow channel.

[0020] Optionally, the extension line of the first branch flow channel intersects with the first basic flow channel at the midpoint of the first basic flow channel.

[0021] Optionally, the first unit Tesla valve flow channel includes a second branch flow channel, the second branch flow channel is arranged perpendicular to the intermediate layer flow channel, the side wall of the second branch flow channel is opened with a second basic Tesla valve flow channel, the second basic Tesla valve flow channel is relatively connected to the second branch flow channel, and multiple second basic Tesla valve flow channels are arranged along the opening direction of the second branch flow channel, and two adjacent second basic Tesla valve flow channels are relatively connected.

[0022] Optionally, the second basic Tesla valve flow channel includes a second basic flow channel located on both sides of the second branch flow channel, the second basic flow channel is relatively connected to the second branch flow channel, the second basic flow channel is inclined, and the second basic flow channel is gradually arranged from the side away from the middle layer flow channel to the side close to the middle layer flow channel toward the side away from the second branch flow channel. A second arc flow channel is opened on the side of the second basic flow channel close to the middle layer flow channel, one end of the second arc flow channel is relatively connected to the second basic flow channel, and the other end of the second arc flow channel is relatively connected to the second branch flow channel.

[0023] Optionally, the second unit Tesla valve flow channel and the first unit Tesla valve flow channel are symmetrically arranged with respect to the intermediate layer flow channel.

[0024] Optionally, the anode is loaded with a catalyst for organic matter degradation.

[0025] Optionally, the cathode is loaded with a catalyst for hydrogen evolution.

[0026] Optionally, the intermediate layer flow channel is made of corrosion-resistant material.

[0027] Optionally, the thickness of the middle layer flow channel ranges from 2 mm to 20 mm.

[0028] Optionally, the intermediate layer flow channel is manufactured by micro-nano processing.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] The electrolyte enters the interior of the middle layer flow channel from the liquid inlet of the electrolytic cell body, and the electrolyte enters the interior of the cathode chamber from the first unit Tesla valve flow channel from the middle layer flow channel, and the electrolyte is electrolyzed by the cathode in the cathode chamber. The electrolyte enters the interior of the anode chamber from the second unit Tesla valve flow channel from the middle layer flow channel, and the electrolyte is electrolyzed by the anode in the anode chamber, and the gas after electrolysis in the cathode chamber and the anode chamber is discharged from the positions of the cathode gas outlet and the anode gas outlet under the drive of the electrolyte. The first unit Tesla valve flow channel and the second unit Tesla valve flow channel can reduce the backflow of gas generated after the electrolyte is electrolyzed by the cathode and the anode. Therefore, without using expensive and easily contaminated ion exchange membranes, the reasonable design of the electrolyte flow channel and the electrode can use the flow of the electrolyte to separate the gases produced by the anode and the cathode, thereby avoiding the risk of explosion due to mixing of gas produced by the anode and the cathode. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the overall structure of a diaphragmless electrolyzer using a Tesla valve flow channel in an embodiment of the present application.

[0032] Figure 2 This is a schematic structural diagram of one of the intermediate layer flow channels of a diaphragmless electrolyzer using a Tesla valve flow channel in an embodiment of the present application.

[0033] Figure 3 yes Figure 2 An enlarged view of the structure of an intermediate layer flow channel.

[0034] Figure 4 This is a schematic structural diagram of another intermediate layer flow channel of a diaphragmless electrolyzer using a Tesla valve flow channel in an embodiment of the present application.

[0035] Figure 5 yes Figure 4 An enlarged view of the structure of an intermediate layer flow channel.

[0036] Explanation of the accompanying drawings: 1. electrolytic cell body; 11. liquid inlet; 12. cathode gas outlet; 13. anode gas outlet; 2. intermediate layer flow channel; 21. first unit Tesla valve flow channel; 211. first branch flow channel; 212. first basic Tesla valve flow channel; 2121. first basic flow channel; 2122. first connecting flow channel; 2123. first arc flow channel; 213. second branch flow channel; 214. second basic Tesla valve flow channel; 2141. second basic flow channel; 2142. second arc flow channel; 22. second unit Tesla valve flow channel; 3. cathode; 31. cathode chamber; 311. cathode liquid inlet; 312. cathode decomposition part; 4. anode; 41. anode chamber; 411. anode liquid inlet; 412. anode decomposition part. DETAILED DESCRIPTION

[0037] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0039] Oil production generates large amounts of produced water containing organic matter and salt. Faced with stringent environmental regulations, produced water from oil and gas fields must be treated to meet discharge standards before it can be discharged. Traditional water treatment methods consume significant amounts of energy and chemicals, making them both uneconomical and environmentally unfriendly. Therefore, the use of electrolysis to treat oilfield produced water would be of significant significance.

[0040] Hydrogen production by alkaline water electrolysis, proton exchange membrane electrolysis, and anion exchange membrane electrolysis all require a diaphragm or ion exchange membrane to separate the anode and cathode from the gas production. However, due to the numerous organic pollutants present in oilfield produced water, the membranes in electrolyzers with diaphragms will inevitably be contaminated by the organic matter in the produced water, causing rapid ignition. Therefore, oilfield produced water electrolysis requires the use of diaphragm-free electrolyzers. Furthermore, diaphragms for water electrolysis are generally expensive and have significant membrane resistance. Therefore, electrolyzers with diaphragm-free designs offer significant advantages in construction and operating costs.

[0041] However, due to its single-chamber design without a diaphragm, the gases produced by the anode and cathode may mix, which will pose an explosion risk. In order to avoid the use of expensive and easily contaminated ion exchange membranes, through the reasonable design of electrolyte flow channels and electrodes, the gases produced by the anode and cathode are separated by the flow of electrolyte, thereby avoiding the risk of explosion caused by the mixing of gases produced by the anode and cathode.

[0042] The following is combined with Figure 1-5 This application is described in further detail.

[0043] The present application discloses a diaphragmless electrolyzer using a Tesla valve flow channel. Figure 1 、 Figure 2 A diaphragmless electrolyzer using a Tesla valve flow channel includes an electrolyzer body 1, which is a rectangular hollow structure, and an intermediate layer flow channel 2 is vertically arranged inside the electrolyzer body 1. A liquid inlet 11 is opened on the bottom wall of the electrolyzer body 1 relative to the intermediate layer flow channel 2. The liquid inlet 11 relatively connects the outside with the inside of the electrolyzer body 1, so that the external liquid can enter the inside of the electrolyzer body 1 from the position of the liquid inlet 11 for liquid replenishment.

[0044] Inside the electrolytic cell body 1, a cathode 3 and an anode 4 are respectively arranged on both sides of the intermediate layer flow channel 2. The cathode 3 and the anode 4 are arranged in parallel, and the cathode 3, the anode 4 and the intermediate layer flow channel 2 are arranged in parallel. The direction along the line connecting the cathode 3 and the anode 4 is the length direction of the electrolytic cell body 1, and the cathode 3 and the anode 4 are arranged along the width direction of the electrolytic cell body 1.

[0045] The interior of the electrolytic cell body 1 is located on the side of the intermediate layer flow channel 2 close to the cathode 3 to form a cathode chamber 31, and the interior of the electrolytic cell body 1 is located on the side of the intermediate layer flow channel 2 close to the anode 4 to form an anode chamber 41. The cathode chamber 31 and the anode chamber 41 are separated by the intermediate layer flow channel 2.

[0046] The cathode 3 is located within the cathode chamber 31 and is divided into a cathode liquid inlet 311 located near the intermediate layer flow channel 2. The cathode chamber 31 is located on the side of the cathode 3 facing away from the intermediate layer flow channel 2, forming a cathode decomposition section 312. The cathode liquid inlet 311 and the cathode decomposition section 312 are relatively connected through the cathode 3. Liquid flowing into the intermediate layer flow channel 2 can undergo a hydrogen evolution reaction on the cathode 3 side to produce hydrogen gas. The hydrogen gas enters the cathode decomposition section 312 under the influence of the flow of the electrolyte. A cathode gas outlet 12 is provided at the top of the cathode chamber 31 relative to the cathode decomposition section 312. The width of the cathode gas outlet 12 along the width direction of the electrolyzer body 1 is smaller than the width of the cathode decomposition section 312 along the width direction of the electrolyzer body 1. The hydrogen gas within the cathode decomposition section 312 can be discharged from the cathode gas outlet 12 under the influence of the electrolyte.

[0047] The anode 4 is located within the anode chamber 41 and is divided into an anode liquid inlet 411 located near the intermediate layer flow channel 2. The anode chamber 41 is located on the side of the anode 4 facing away from the intermediate layer flow channel 2, forming an anode decomposition section 412. The anode liquid inlet 411 and the anode decomposition section 412 are relatively connected via the anode 4. Organic matter in the liquid flowing into the intermediate layer flow channel 2 can undergo oxidative degradation, chlorine evolution, and oxygen evolution reactions on the anode 4 side. The generated gases, such as carbon dioxide, chlorine, and oxygen, flow through the electrolyte and enter the anode decomposition section 412. An anode gas outlet 13 is provided at the top of the anode chamber 41, relative to the anode decomposition section 412. The width of the anode gas outlet 13 along the width of the electrolytic cell body 1 is smaller than the width of the anode decomposition section 412 along the width of the electrolytic cell body 1. Gases, such as carbon dioxide, chlorine, and oxygen, within the anode decomposition section 412 can be discharged from the anode gas outlet 13, driven by the electrolyte.

[0048] A cathode-side gas-liquid separator is provided on the outer wall of the electrolytic cell body 1 at a position relative to the cathode gas outlet 12. Gas within the cathode decomposition section 312 is discharged from the cathode gas outlet 12 and then enters the cathode-side gas-liquid separator for gas-liquid separation, facilitating subsequent further processing. An anode-side gas-liquid separator is provided on the outer wall of the electrolytic cell body 1 at a position relative to the anode gas outlet 13. Gas within the anode decomposition section 412 is discharged from the anode gas outlet 13 and then enters the anode-side gas-liquid separator for gas-liquid separation, facilitating subsequent further processing.

[0049] The cathode 3 is loaded with a hydrogen evolution catalyst, and the anode 4 is loaded with a catalyst for organic matter degradation. The specific catalysts used in the cathode 3 and the anode 4 can be adjusted based on actual production requirements.

[0050] The middle layer flow channel 2 is in the form of a Tesla valve flow channel, and the middle layer flow channel 2 is made of corrosion-resistant material to reduce the occurrence of corrosion. The processing technology can be selected as micro-nano processing, and the thickness range is controlled between 2mm-20mm.

[0051] The middle layer flow channel 2 is a linear structure, and the middle layer flow channel 2 is arranged along the width direction of the electrolytic cell body 1. The bottom end of the middle layer flow channel 2 is opposite to the liquid inlet 11, so that the liquid inside the liquid inlet 11 can enter from the inside of the middle layer flow channel 2.

[0052] A first unit Tesla valve channel 21 is provided on the side of the intermediate layer channel 2 close to the cathode 3, and a second unit Tesla valve channel 22 is provided on the side of the intermediate layer channel 2 close to the anode 4. One end of the first unit Tesla valve channel 21 is relatively connected to the intermediate layer channel 2, and the other end of the first unit Tesla valve channel 21 is relatively connected to the cathode liquid inlet 311 of the cathode chamber 31. One end of the second unit Tesla valve channel 22 is relatively connected to the intermediate layer channel 2, and the other end of the second unit Tesla valve channel 22 is relatively connected to the anode liquid inlet 411 of the anode chamber 41.

[0053] The liquid inside the middle layer flow channel 2 can pass from the middle layer flow channel 2 to the first unit Tesla valve flow channel 21 and enter the cathode liquid inlet 311 of the cathode chamber 31, and undergo hydrogen evolution and other reactions through the cathode 3. The liquid inside the middle layer flow channel 2 can pass from the middle layer flow channel 2 through the second unit Tesla valve flow channel 22 and enter the anode liquid inlet 411 of the anode chamber 41, and undergo oxygen evolution reaction through the anode 4.

[0054] The first unit Tesla valve flow channel 21 and the second unit Tesla valve flow channel 22 are symmetrically arranged along the middle layer flow channel 2 .

[0055] Reference Figure 2 、 Figure 3 In some embodiments, the first unit Tesla valve flow channel 21 includes a first branch flow channel 211. The first branch flow channel 211 is arranged at an angle and is gradually inclined downward along the length direction of the electrolytic cell body 1 from the side close to the middle layer flow channel 2 to the side away from the middle layer flow channel 2. A first basic Tesla valve flow channel 212 is opened at the end of the first branch flow channel 211 away from the middle layer flow channel 2. Multiple first basic Tesla valve flow channels 212 are arranged at equal intervals along the length direction of the electrolytic cell. Adjacent first basic Tesla valve flow channels 212 are relatively connected, so that liquid in the middle layer flow channel 2 can enter the interior of the first basic Tesla valve flow channel 212 through the first branch flow channel 211, and then relatively connect along the interiors of the multiple first basic Tesla valve flow channels 212, and finally enter the interior of the cathode liquid inlet 311 of the cathode chamber 31.

[0056] The first basic Tesla valve flow channel 212 includes a first basic flow channel 2121, which is tilted and has an inclination angle opposite to that of the first branch flow channel 211. The angle between the first basic flow channel 2121 and the horizontal direction is the same as the angle between the first branch flow channel 211 and the horizontal direction.

[0057] The extension line of the first branch channel 211 intersects the center point of the first basic channel 2121. A first connecting channel 2122 is provided at the end of the first basic channel 2121 facing away from the intermediate channel 2 and at the center of the first basic channel 2121. The first connecting channel 2122 is arranged parallel to the direction of the first branch channel 211. One end of the first connecting channel 2122 at the end of the first basic channel 2121 is in relative communication with the first basic channel 2121. The first connecting channel 2122 at the center of the first basic channel 2121 is in relative communication with the first basic channel 2121, and the other end is in relative communication with the first branch channel 211.

[0058] A first curved channel 2123 is provided at one end of the first connecting channel 2122 away from the first basic channel 2121. The first curved channel 2123 has an arc-shaped structure, and one end of the first curved channel 2123 is relatively connected to the first connecting channel 2122, and the other end of the first curved channel 2123 is relatively connected to the first basic channel 2121.

[0059] Reference Figure 4 、 Figure 5 In some embodiments, the first unit Tesla valve channel 21 may also include a second branch channel 213, which is arranged along the length direction of the electrolytic cell body 1. The second branch channel 213 is relatively connected to the middle layer channel 2, so that the liquid inside the middle layer channel 2 can enter the second branch channel 213.

[0060] A second basic Tesla valve channel 214 is provided on the side wall of the second branch channel 213 . The second basic Tesla valve channel 214 is relatively connected to the second branch channel 213 , and multiple second basic Tesla valve channels 214 are equidistantly arranged along the length direction of the electrolytic cell body 1 .

[0061] The second basic Tesla valve flow channel 214 includes a second basic flow channel 2141, which is located on both sides of the second branch flow channel 213 and is relatively connected to the second branch flow channel 213. The second basic flow channel 2141 is arranged at an angle and is gradually inclined along the length of the electrolytic cell body 1 from the side away from the middle layer flow channel 2 to the side close to the middle layer flow channel 2, toward the side away from the second branch flow channel 213.

[0062] A second arc-shaped flow channel 2142 is opened at one end of the second basic flow channel 2141 away from the second branch flow channel 213. The second arc-shaped flow channel 2142 is an arc-shaped structure, and one end of the second arc-shaped flow channel 2142 is relatively connected to the second basic flow channel 2141, and the other end of the second arc-shaped flow channel 2142 is relatively connected to the second branch flow channel 213.

[0063] By setting up a flow channel state design with a Tesla valve shape, the liquid inside the middle layer flow channel 2 can flow unidirectionally to both sides of the inside of the electrolytic cell body 1, reducing the backflow of the electrolyte.

[0064] The liquid enters the interior of the electrolytic cell body 1 from the position of the liquid inlet 11, then circulates through the intermediate layer flow channel 2, enters the cathode liquid inlet 311 through the first unit Tesla valve flow channel 21, and electrolyzes the liquid inside the cathode liquid inlet 311 through the cathode 3. The electrolyzed gas and liquid, driven by the electrolyte, enter the interior of the cathode decomposition section 312, and then are discharged through the position of the cathode gas outlet 12 to the interior of the cathode side gas-liquid separator for gas-liquid separation. The electrolyte located in the intermediate layer flow channel 2 enters the anode liquid inlet 411 through the second unit Tesla valve flow channel 22, and electrolyzes the liquid located in the anode liquid inlet 411 through the anode 4. The electrolyzed liquid, driven by the electrolyte, enters the interior of the anode decomposition section 412, and then are discharged through the position of the anode gas outlet 13 to the interior of the anode side gas-liquid separator for gas-liquid separation.

[0065] In the present invention, the term "plurality" refers to at least two or more than two, unless otherwise specified. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean fixed, removable, or integral; and "connected" can mean directly or indirectly through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0066] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. A diaphragmless electrolyzer using a Tesla valve flow channel, characterized in that: The invention comprises an electrolytic cell body (1), wherein a liquid inlet (11) is provided at the bottom of the electrolytic cell body (1), and an intermediate layer flow channel (2) is provided above the position of the interior of the electrolytic cell body (1) relative to the liquid inlet (11), wherein the intermediate layer flow channel (2) divides the interior of the electrolytic cell body (1) into a cathode chamber (31) and an anode chamber (41), wherein the cathode chamber (31) is relatively connected to the intermediate layer flow channel (2), and the anode chamber (41) is relatively connected to the intermediate layer flow channel (2), and the intermediate layer flow channel (2) is a one-way flow channel.

2. A diaphragmless electrolyzer using a Tesla valve flow channel according to claim 1, characterized in that: A cathode (3) is fixedly connected to the cathode chamber (31), and the cathode (3) divides the cathode chamber (31) into a cathode liquid inlet portion (311) and a cathode decomposition portion (312). The cathode liquid inlet portion (311) is located on a side of the cathode (3) close to the intermediate layer flow channel (2), and the cathode decomposition portion (312) is located on a side of the cathode (3) away from the intermediate layer flow channel (2).

3. A diaphragmless electrolyzer using a Tesla valve flow channel according to claim 2, characterized in that: A cathode gas outlet (12) is provided on the side wall of the electrolytic cell body (1) at a position relative to the cathode decomposition part (312), and the cathode gas outlet (12) relatively connects the outside with the interior of the cathode decomposition part (312).

4. A diaphragmless electrolyzer using a Tesla valve flow channel according to claim 3, characterized in that: A cathode (3) side gas-liquid separator is provided on the outside of the electrolytic cell body (1) at a position relative to the cathode gas outlet (12).

5. The diaphragmless electrolyzer using a Tesla valve flow channel according to claim 1, characterized in that: An anode (4) is fixedly connected to the side wall of the electrolytic cell body (1) relative to the position of the anode chamber (41), and the anode (4) divides the anode chamber (41) into an anode liquid inlet portion (411) and an anode decomposition portion (412). The anode liquid inlet portion (411) is located on a side of the anode (4) close to the intermediate layer flow channel (2), and the anode decomposition portion (412) is located on a side of the anode (4) away from the intermediate layer flow channel (2).

6. A diaphragmless electrolyzer using a Tesla valve flow channel according to claim 5, characterized in that: An anode gas outlet (13) is provided on the side wall of the electrolytic cell body (1) at a position relative to the anode decomposition part (412), and the anode gas outlet (13) relatively connects the outside with the inside of the anode decomposition part (412).

7. A diaphragmless electrolyzer using a Tesla valve flow channel according to claim 3 or 6, characterized in that: The length of the cathode gas outlet (12) is not greater than the length of the cathode decomposition part (312), and the length of the anode gas outlet (13) is not greater than the length of the anode decomposition part (412).

8. The diaphragmless electrolyzer using a Tesla valve flow channel according to claim 6, characterized in that: An anode (4) side gas-liquid separator is provided on the outside of the electrolytic cell body (1) at a position relative to the anode gas outlet (13).

9. The diaphragmless electrolyzer using a Tesla valve flow channel according to claim 1, characterized in that: The intermediate layer flow channel (2) is arranged along the width direction of the electrolytic cell body (1), one end of the intermediate layer flow channel (2) is relatively connected to the liquid inlet (11), a first unit Tesla valve flow channel (21) is provided on the side of the intermediate layer flow channel (2) close to the cathode chamber (31), and a second unit Tesla valve flow channel (22) is provided on the side of the intermediate layer flow channel (2) close to the anode chamber (41), one end of the first unit Tesla valve flow channel (21) is relatively connected to the intermediate layer flow channel (2), the other end of the first unit Tesla valve flow channel (21) is relatively connected to the cathode chamber (31), one end of the second unit Tesla valve flow channel (22) is relatively connected to the intermediate layer flow channel (2), and the other end of the second unit Tesla valve flow channel (22) is relatively connected to the anode chamber (41).

10. A diaphragmless electrolyzer using a Tesla valve flow channel according to claim 9, characterized in that: The first unit Tesla valve flow channel (21) includes a first branch flow channel (211), the first branch flow channel (211) is relatively connected to the intermediate layer flow channel (2), and a first basic Tesla valve flow channel (212) is arranged on the side of the first branch flow channel (211) away from the intermediate layer flow channel (2). A plurality of the first basic Tesla valve flow channels (212) are arranged along the width direction, and two adjacent first basic Tesla valve flow channels (212) are relatively connected.

11. The diaphragmless electrolyzer using a Tesla valve flow channel according to claim 10, characterized in that: The first basic Tesla valve flow channel (212) includes a first basic flow channel (2121), the inclination direction of the first basic flow channel (2121) is opposite to that of the first branch flow channel (211), and a first connecting flow channel (2122) is opened at one end of the first basic flow channel (2121) away from the intermediate layer flow channel (2) and the center point of the first basic flow channel (2121), the first connecting flow channel (2122) is relatively connected to the first basic flow channel (2121), and a first arc flow channel (2123) is opened at the end of the first connecting flow channel (2122), one end of the first arc flow channel (2123) is relatively connected to the first connecting flow channel (2122), and the other end of the first arc flow channel (2123) is relatively connected to the first basic flow channel (2121).

12. A diaphragmless electrolyzer using a Tesla valve flow channel according to claim 11, characterized in that: The extension line of the first branch flow channel (211) intersects with the first basic flow channel (2121) at the midpoint of the first basic flow channel (2121).

13. The diaphragmless electrolyzer using a Tesla valve flow channel according to claim 9, characterized in that: The first unit Tesla valve flow channel (21) includes a second branch flow channel (213), the second branch flow channel (213) is arranged perpendicular to the intermediate layer flow channel (2), the side wall of the second branch flow channel (213) is provided with a second basic Tesla valve flow channel (214), the second basic Tesla valve flow channel (214) is relatively connected to the second branch flow channel (213), a plurality of the second basic Tesla valve flow channels (214) are arranged along the opening direction of the second branch flow channel (213), and two adjacent second basic Tesla valve flow channels (214) are relatively connected.

14. The diaphragmless electrolyzer using a Tesla valve flow channel according to claim 13, characterized in that: The second basic Tesla valve flow channel (214) includes a second basic flow channel (2141) arranged opposite to each other on both sides of the second branch flow channel (213), the second basic flow channel (2141) is relatively connected to the second branch flow channel (213), the second basic flow channel (2141) is inclined, and the second basic flow channel (2141) is arranged from the side away from the middle layer flow channel (2) to the side close to the middle layer flow channel (2) gradually toward the side away from the second branch flow channel (213), and a second arc flow channel (2142) is opened on the side of the second basic flow channel (2141) close to the middle layer flow channel (2), one end of the second arc flow channel (2142) is relatively connected to the second basic flow channel (2141), and the other end of the second arc flow channel (2142) is relatively connected to the second branch flow channel (213).

15. A diaphragmless electrolyzer using a Tesla valve flow channel according to any one of claims 9 to 14, characterized in that: The second unit Tesla valve flow channel (22) and the first unit Tesla valve flow channel (21) are symmetrically arranged with respect to the intermediate layer flow channel (2).

16. The diaphragmless electrolyzer using a Tesla valve flow channel according to claim 5, characterized in that: The anode (4) is loaded with a catalyst for organic matter degradation.

17. The diaphragmless electrolyzer using a Tesla valve flow channel according to claim 2, characterized in that: The cathode (3) is loaded with a catalyst for hydrogen evolution.

18. The diaphragmless electrolyzer using a Tesla valve flow channel according to claim 1, characterized in that: The intermediate layer flow channel (2) is made of corrosion-resistant material.

19. The diaphragmless electrolyzer using a Tesla valve flow channel according to claim 1, characterized in that: The thickness of the intermediate layer flow channel (2) ranges from 2 mm to 20 mm.

20. The diaphragmless electrolyzer using a Tesla valve flow channel according to claim 1, characterized in that: The intermediate layer flow channel (2) is manufactured by micro-nano processing.

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