CN114438517A - Electrolysis device and multipole frame structure - Google Patents

Abstract

The application discloses an electrolysis unit and a multipole frame structure. The electrolysis apparatus comprises: the device comprises a first extrusion plate, a second extrusion plate, a diaphragm, a sealing gasket and at least one multipole frame; the multipole frame comprises a frame body, wherein a chamber cavity of electrolyte is formed in the frame body, and an inlet part and an outlet part are respectively arranged on the chamber cavity; the bipolar frames are arranged in a stacked manner and fixedly connected; the first extrusion plate is attached to the frame body at the first end of the laminated frame body, and the second extrusion plate is attached to the frame body at the second end of the laminated frame body; the first extrusion plate and the second extrusion plate bear opposite forces, so that all the multipole frames in at least one multipole frame are hermetically connected; a first electrode plate is arranged on the first side of the multipole frame, and a second electrode plate is arranged on the second side of the multipole frame; the first electrode plate and the second electrode plate are connected with a power supply and provide current for electrolyte in the chamber cavity; and a dispersion plate is also arranged in the chamber and shunts electrolyte in the chamber. This application has promoted electrolysis efficiency, is favorable to electrolytic gas's escape.

Description

Electrolysis device and multipole frame structure

Technical Field

The application relates to an electrolyte hydrogen production device, in particular to an electrolysis device and a multipole frame structure.

Background

In modern industry, hydrogen is used as an energy carrier, is supplemented with electric power in global energy transformation, and can be applied to fuel cell vehicles, related hydrogenation stations and the like; hydrogen gas can also be used as a raw material, and is widely applied to the fields of petroleum refining, chemical synthesis, metal refining and the like. Among the various methods for producing hydrogen, the hydrogen production by water electrolysis is considered as an important development direction for producing green hydrogen in the future, and an electrolysis device for producing green hydrogen is used as a core device and is also in a high-speed development stage.

In the process of hydrogen production by water electrolysis, hydrogen production by alkaline water electrolysis is a relatively mature industrial means. With the enhancement of hydrogen production capacity, the equipment cost and the electric power operation cost are also greatly increased. It is therefore desirable to increase the operating current of the plant to increase the hydrogen conversion of the electrolysis unit and to reduce the cell voltage of the electrolysis unit so that the electricity operating costs do not increase with a substantial increase in hydrogen conversion.

Disclosure of Invention

In view of the above problems, the present application provides an electrolysis apparatus and a bipolar frame structure, which can solve the problems of high cost and low conversion rate in hydrogen production by water electrolysis.

In a first aspect, the present application provides an electrolysis apparatus comprising: the device comprises a first extrusion plate, a second extrusion plate and at least one bipolar frame; the multipole frame comprises a frame body, wherein a chamber cavity of electrolyte is formed in the frame body, and an inlet part and an outlet part are respectively arranged on the chamber cavity; the bipolar frames are arranged in a stacked manner and fixedly connected; the first extrusion plate is attached to the frame body at the first end of the laminated frame body, and the second extrusion plate is attached to the frame body at the second end of the laminated frame body; the first extrusion plate and the second extrusion plate bear opposite forces, so that the multipole frames in the at least one multipole frame are hermetically connected;

a first electrode plate is arranged on the first side of the multipole frame, and a second electrode plate is arranged on the second side of the multipole frame; the first electrode plate and the second electrode plate are connected with a working power supply and provide electrolytic current for electrolyte in a chamber cavity in the bipolar frame;

still be provided with the dispersion board in the room chamber, the dispersion board is right electrolyte in the room chamber shunts, makes the concentration homogeneity of electrolyte in the room chamber, and promotes the gas release in the electrolyte.

In some embodiments, the multipole frame comprises an edge frame, a first electrode plate, a second electrode plate, a separator plate, a conductive plate, a dispersion plate, an inlet portion, and an outlet portion; the side frames are arranged in a surrounding mode to form a frame body, the partition plate is laid in the middle of the inside of the frame body, the periphery of the partition plate is fixedly connected with the frame body, and the frame body is divided into a first chamber cavity and a second chamber cavity; the first electrode plate is covered at the opening end of the first chamber cavity; the second electrode plate is covered at the opening end of the second chamber cavity;

the first end of the first conductive plate is electrically connected to the first electrode plate, and the second end of the first conductive plate is electrically connected to the first side surface of the partition plate; a first end of the second conductive plate is electrically connected to the second electrode plate, and a second end of the second conductive plate is electrically connected to the second side surface of the separator plate; wherein the first side and the second side are opposite;

the first chamber cavity and the second chamber cavity are respectively provided with an inlet part for the inflow of the electrolyte and an outlet part for the outflow of the electrolyte;

the dispersion plate comprises a first dispersion plate and a second dispersion plate; the first dispersion plate is arranged on one side, close to the inlet, in the chamber cavity; the second dispersion plate is disposed in the chamber cavity on a side adjacent to the outlet portion.

In some embodiments, the distance between the first electrode plate in the bipolar frame and the first side of the separator plate is less than a first set dimension; the distance between the second electrode plate in the bipolar frame and the second side face of the separation plate is smaller than the first set size;

the outlet caliber of the outlet part is larger than or equal to the first set size;

the part of the partition plate in the first chamber cavity, which is close to the outlet part in the first chamber cavity, is provided with a bent part, the concave part of the bent part is positioned in the first chamber cavity, and the convex part of the bent part is positioned in the second chamber cavity;

the part of the partition plate in the second chamber cavity, which is close to the outlet part in the second chamber cavity, is provided with a bent part, the concave part of the bent part is positioned in the second chamber cavity, and the convex part of the bent part is positioned in the first chamber cavity.

In some embodiments, the outlet portion in the first chamber and the outlet portion in the second chamber are respectively provided at both left and right ends of the third side surface of the frame body;

the inlet part in the first chamber cavity and the inlet part in the second chamber cavity are respectively arranged at the left end and the right end of the fourth side surface of the frame body; the third side and the fourth side are opposite;

the inlet part and the outlet part in the first chamber cavity are distributed in a diagonal line of the frame body; and the inlet part and the outlet part in the second chamber cavity are distributed in a diagonal line of the frame body.

In some embodiments, one end of the first dispersion plate is fixed to the partition plate, and the other end of the first dispersion plate is fixed to the inner side wall of the frame, the first dispersion plate, the partition plate and the side wall of the frame form an accommodating space, and the electrolyte outlet of the inlet portion in the chamber is located in the accommodating space.

In some embodiments, the dispersion plate has a plurality of dispersion holes at different positions.

In some embodiments, a separator is disposed between the first electrode plate and the second electrode plate stacked on the frame bodies in the adjacent bipolar frames.

In some embodiments, a sealing gasket is installed at the joint of two frames in adjacent bipolar frames, and the bipolar frames arranged in a stacked manner are sealed through the sealing gasket.

In a second aspect, the present application provides a multipole frame structure, comprising an edge frame, a first electrode plate, a second electrode plate, a partition plate, a conductive plate, a dispersion plate, an inlet portion and an outlet portion; the side frames are arranged in a surrounding mode to form a frame body, the partition plate is laid in the middle of the inside of the frame body, the periphery of the partition plate is fixedly connected with the frame body, and the frame body is divided into a first chamber cavity and a second chamber cavity; the first electrode plate is covered at the opening end of the first chamber cavity; the second electrode plate is covered at the opening end of the second chamber cavity;

the first end of the first conductive plate is electrically connected to the first electrode plate, and the second end of the first conductive plate is electrically connected to the first side surface of the partition plate; the first end of the second conductive plate is electrically connected to the second electrode plate, and the second end of the second conductive plate is electrically connected to the second side surface of the partition plate; wherein the first side and the second side are opposite;

the first chamber cavity and the second chamber cavity are respectively provided with an inlet part for the inflow of the electrolyte and an outlet part for the outflow of the electrolyte;

the dispersion plate comprises a first dispersion plate and a second dispersion plate; the first dispersion plate is arranged on one side, close to the inlet, in the chamber cavity; the second dispersion plate is arranged on one side, close to the outlet, in the chamber cavity; the first dispersion plate and the second dispersion plate are provided with liquid distribution holes.

In some embodiments, a distance between the first electrode plate in the bipolar frame and the second side of the separator is less than a first set dimension; the distance between the second electrode plate in the bipolar frame and the second side face of the separation plate is smaller than the first set size;

the outlet caliber of the outlet part is larger than or equal to the first set size;

the part of the partition plate in the first chamber cavity, which is close to the outlet part in the first chamber cavity, is provided with a bent part, the concave part of the bent part is positioned in the first chamber cavity, and the convex part of the bent part is positioned in the second chamber cavity;

the part of the partition plate in the second chamber cavity, which is close to the outlet part in the second chamber cavity, is provided with a bent part, the concave part of the bent part is positioned in the second chamber cavity, and the convex part of the bent part is positioned in the first chamber cavity.

The technical scheme of this application embodiment all sets up the dispersion board through entrance part and exit part in electrolytic device, makes electrolyte when flowing into electrolytic device through entrance part, can make the homogeneity of each position liquid concentration in the cavity among the electrolytic device, more is favorable to the electrolysis of electrolyte, promotes electrolysis efficiency. Export department can cut apart the inside gas-liquid of electrolytic device through the dispersion board, makes most gas in the electrolyte flow out through export department under the effect of dispersion board, promotes the gas escape efficiency of electrolyte. In addition, the outlet aperture of the outlet part in the embodiment of the application is large, so that the gas-liquid mixture in the electrolysis device can be led out through the outlet part, the smooth circulation of the electrolyte is promoted, and the escape of the gas in the electrolyte is accelerated. The electrolytic device provided by the embodiment of the application has the advantages that the chamber cavity is shallow, the whole volume is small, and the processing cost is saved.

The foregoing description is only an overview of the technical solutions of the present application, and the present application can be implemented according to the content of the description in order to make the technical means of the present application more clearly understood, and the following detailed description of the present application is given in order to make the above and other objects, features, and advantages of the present application more clearly understandable.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

FIG. 1 is a schematic diagram showing an overall structure of an electrolysis apparatus provided in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a multipole frame according to an embodiment of the present application;

fig. 3 shows a partial structural schematic diagram of a bipolar frame according to an embodiment of the present application.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural pieces" refers to two or more (including two).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the directions or positional relationships indicated in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the referred device or element must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

At present, the main modes in the hydrogen production technology are coal hydrogen production, natural gas hydrogen production and other technologies, and compared with the former two technologies, the alkaline water hydrogen production cost has a larger price disadvantage, so the equipment investment cost and the operation cost are reduced, and the method is the key for improving the alkaline water hydrogen production technology. With the problems of global warming caused by carbon dioxide isothermal chamber effect gas, gradual reduction of non-renewable energy sources such as fossil fuel and the like, alkaline water electrolysis hydrogen production is considered to be one of the most potential hydrogen production technologies.

In the conventional electrolytic apparatus for alkaline water electrolysis, increasing the hydrogen production per unit time requires increasing the number of electrolytic cells, which is not favorable for cost reduction. The operation current density of the electrolysis device is improved, and higher hydrogen yield per unit time can be obtained on the premise of not increasing the equipment cost. Theoretically, the higher the current density, the higher the energy consumption, and more seriously, the alkaline water electrolysis apparatus operated at high current density, which generates a large amount of gas in the cathode chamber and the anode chamber during operation. When the gas escape is not rapid, the circulation of the electrolyte is poor, and when the gas-liquid ratio exceeds 40%, the solution resistance is greatly increased, meanwhile, the escape speed of bubbles on the surface of the electrode is reduced, the effective area of the electrode plate is reduced, and the energy consumption can be increased. Therefore, the equipment input cost is reduced, the gas quantity remained in the solution is effectively reduced, and the voltage of the electrolysis device is reduced, so that the equipment energy consumption is reduced, which is the technical problem to be solved by the embodiment of the application.

Aiming at the technical problems, the embodiment of the application ensures that the gas-liquid ratio in the cavity of the electrolytic chamber can be controlled within a reasonable range by reducing the thickness of the anode chamber of the cathode chamber, particularly ensures that the gas-liquid ratio is lower than 40%, and can obviously reduce the occupied area of equipment and reduce the manufacturing cost of the electrolytic device by reducing the thicknesses of the cathode chamber and the anode chamber, particularly for large-scale electrolytic devices. In addition, aiming at the reduction of the chamber thickness in the electrolysis device, the special outlet structure is arranged, so that the outlet caliber of the outlet of the electrolysis device is maximized under the high-current-density operation condition, the gas escape resistance is reduced, and the gas proportion in the electrolyte is reduced.

The essence of the technical solution of the embodiments of the present application is further clarified below by specific examples.

Fig. 1 is a schematic view illustrating an overall structure of an electrolysis apparatus according to an embodiment of the present disclosure, and as shown in fig. 1, the electrolysis apparatus according to the embodiment of the present disclosure includes a first pressing plate 100, a second pressing plate 200, and at least one bipolar frame 300; the multipole frame comprises a frame body, wherein a chamber cavity of electrolyte is formed in the frame body, and an inlet part 301 and an outlet part 306 are respectively arranged on the chamber cavity; the bipolar frames 300 are arranged in a stacked manner and fixedly connected; the first extrusion plate 100 is attached to the frame body at the first end of the laminated frame body, and the second extrusion plate 200 is attached to the frame body at the second end of the laminated frame body; the first end is the left end shown in fig. 1, and the second end is the right end shown in fig. 1; the first extrusion plate 100 and the second extrusion plate 200 bear opposite forces, so that the at least one multipole frame 300 is hermetically connected with each other.

A first electrode plate is arranged on the first side of the bipolar frame 300, and a second electrode plate is arranged on the second side of the bipolar frame 300; the first electrode plate and the second electrode plate are connected with a working power supply and provide electrolytic current for electrolyte in a chamber cavity in the bipolar frame 300;

still be provided with the dispersion board in the room chamber, the dispersion board is right electrolyte in the room chamber shunts, makes the concentration homogeneity of electrolyte in the room chamber, and promotes the gas release in the electrolyte.

The electrolysis device of the embodiment of the application can be used for electrolyzing different electrolytes, such as a caustic soda electrolyte, a pure water electrolyte, a sodium chloride electrolyte and the like.

In the embodiment of the application, the inlet part 301 and the outlet part 306 of the electrolytic device are both provided with the dispersion plates, so that when electrolyte flows into the electrolytic device through the inlet part, the concentration of the liquid at each part in the cavity of the electrolytic device can be uniform, the electrolysis of the electrolyte is more facilitated, and the electrolysis efficiency is improved. The outlet part 306 can divide the gas and liquid in the electrolytic device through the dispersion plate, so that most of gas in the electrolyte flows out through the outlet part 306 under the action of the dispersion plate, and the gas overflow efficiency of the electrolyte is improved.

As shown in fig. 1, in the electrolytic device according to the embodiment of the present invention, a gasket is attached to a joint between two adjacent bipolar frames, and the stacked bipolar frames are sealed by the gasket, but it is needless to say that a joint between the joint frames between the adjacent bipolar frames may be sealed by another sealing method. Of course, the sealing performance between the lamination frames arranged in a stacked manner may be improved by the first pressing plate 100 and the second pressing plate 200 respectively receiving opposite external pressures.

Fig. 2 is a schematic structural diagram of a repolarization frame according to an embodiment of the present application, and as shown in fig. 2, the repolarization frame according to the embodiment of the present application includes an edge frame 303, a first electrode plate 302, a second electrode plate (not shown in fig. 2), a partition plate 307, a conductive plate 304, a dispersion plate, an inlet 301, and an outlet 306; in the embodiment of the present invention, the side frame 303 is formed by welding four metal plates with a height of 40-80mm, and the whole side frame 303 is a rectangular parallelepiped structure; here, the metal plate may be a stainless steel plate or the like. The partition plate 307 is laid in the middle of the frame body, and serves as a partition plate to divide the side frame 303 into two parts, that is, the frame body is divided into a first chamber and a second chamber. The partition plate 307 is laid in the frame in such a manner as to be substantially parallel to the two openings of the side frame 303. In order to prevent electrolyte leakage, the periphery of the partition plate 307 is fixed and hermetically connected with the frame. As an implementation manner, the partition plate 307 and the side frame 303 may also be made by an integrated molding manner, and the integrated molding side frame 303 has better sealing performance, so as to ensure the sealing performance between the first chamber cavity and the second chamber cavity, and avoid liquid leakage between the first chamber cavity and the second chamber cavity. The first electrode plate 302 is covered at the open end of the first chamber, the second electrode plate is covered at the open end of the second chamber, the first electrode plate 302 is exposed in fig. 2, and the second electrode plate is located at the opening at the other side of the side frame 303.

In the embodiment of the present application, the first electrode plate 302 is an anode plate, and correspondingly, the second electrode plate is a cathode plate. In the embodiment of the present application, the arrangement position of the anode plate or the cathode plate is not limited, and the arrangement position may be set according to actual needs, for example, the first electrode plate 302 may also be the cathode plate, and the second electrode plate is the anode plate, and the like.

The conductive plates include a first conductive plate 304 and a second conductive plate (not shown in fig. 2), a first end of the first conductive plate 304 is electrically connected to the first electrode plate 302, and a second end of the first conductive plate 304 is electrically connected to a first side of the separator plate 307; a first end of the second conductive plate is electrically connected to the second electrode plate, and a second end of the second conductive plate is electrically connected to the second side surface of the separator plate; wherein the first side and the second side are opposite. The conductive plate 304 is a long strip, one end of which is connected to the partition plate 307, and the other end of which is connected to the electrode plate, and is used as a support plate of the electrode plate, and is also electrically connected to the electrode plate, and the currents with different polarities input from different sides of the partition plate 307 are respectively introduced to the first electrode plate and the second conductive plate, so that the first electrode plate and the second conductive plate can better electrolyze the electrolyte flowing into the chamber. Through set up a large amount of conducting plates 304 in the chamber intracavity to convey the electric current to the electrode board smoothly, improve the current-carrying effect of conducting plate 304 and promote the homogeneity of electrode board electric current distribution, promoted the electrolytic efficiency of electrolyte, make the electrolyte distribution in the different chamber chambeies in the multipole frame more even simultaneously.

The first chamber cavity and the second chamber cavity are respectively provided with an inlet part 301 for the inflow of the electrolyte and an outlet part 306 for the outflow of the electrolyte; the inlet portion 301 is provided on one side surface of the side frame 303, and the outlet portion 306 is provided on the other side surface of the side frame 303 opposite to the inlet portion 301.

The outlet 306 in the first chamber cavity and the outlet 306 in the second chamber cavity are respectively arranged at the left end and the right end of the third side surface of the frame body; the left and right sides are taken in the direction of the paper surface in FIG. 2, and are not intended to limit the structure of the electrolysis apparatus according to the embodiment of the present invention.

The inlet 301 in the first chamber cavity and the inlet 301 in the second chamber cavity are respectively arranged at the left end and the right end of the fourth side surface of the frame body; wherein the third side and the fourth side are opposite. The inlet part 301 and the outlet part 306 in the first chamber cavity are distributed along the diagonal line of the frame body; and the inlet part and the outlet part in the second chamber cavity are distributed along the diagonal line of the frame body.

In the embodiments of the present application, the first, second, third, and fourth are merely used as references, and are not intended to be limiting.

The dispersion plates include a first dispersion plate 308 and a second dispersion plate 305; the first dispersion plate 308 is disposed on a side of the chamber cavity adjacent to the inlet portion 301; the second dispersion plate 305 is disposed in the chamber on a side adjacent to the outlet 306; the first dispersion plate 308 and the second dispersion plate 305 are provided with liquid distribution holes.

Fig. 3 is a schematic partial structure view of a bipolar frame according to an embodiment of the present application, and as shown in fig. 3, a distance between the first electrode plate in the bipolar frame and the first side surface of the separator 307 is smaller than a first set size; the distance between the second electrode plate in the bipolar frame and the second side surface of the separator 307 is smaller than the first set size. The first predetermined size may be a thickness of the chamber, and in the embodiment of the present invention, the frame thickness of the side frame 303 is 40 to 80mm, and after the side frame is divided into two parts by the partition plate 307, the thickness of the chamber is approximately 20 to 40 mm. When the outlet aperture of the outlet 306 is greater than or equal to the first set size, because the partition plate 307 is disposed in the middle of the side frame 303, and the outlet 306 disposed on the sidewall of a chamber will occupy the space of another chamber, in this embodiment of the present application, the partition plate 307 is structurally modified, specifically, a portion of the partition plate 307 in the first chamber, which is close to the outlet 306 in the first chamber, has a bent portion, a concave portion of the bent portion is located in the first chamber, and a convex portion of the bent portion is located in the second chamber;

the portion of the partition plate 307 in the second chamber cavity near the outlet portion 306 in the second chamber cavity has a bent portion, a concave portion of the bent portion is located in the second chamber cavity, and a convex portion of the bent portion is located in the first chamber cavity.

As shown in fig. 3, in the cross-sectional view of fig. 3, the partition plate 307 has a vertical plate-like structure at the bottom, and at a position near the outlet portion 306 of the chamber, the partition plate 307 is deviated in the direction of the other chamber to make room for installation of the outlet portion 306.

In the embodiment of the present application, although the outlet aperture of the outlet 306 is greater than or equal to the first set size, it is generally smaller than twice the first set size, for example, the outlet aperture of the outlet 306 may be 1.1 times, 1.2 times, 1.3 times, 1.4 times the first set size, etc. In order to increase the gas-liquid flow speed in the chamber cavity and ensure that the gas can smoothly flow along with the liquid, the outlet caliber of the outlet part 306 is set to be as large as possible, and the convex part of the partition plate is preferably used for not influencing the electrolyte flow and the electrolysis efficiency of the other chamber cavity in the bipolar frame.

In the embodiment of the present application, as shown in fig. 3, one end of the first dispersion plate 308 is fixed to the partition plate 307, and the other end of the first dispersion plate is fixed to the inner side wall of the frame, the first dispersion plate 308, the partition plate 307 and the side wall of the frame form an accommodating space, and the electrolyte outlet of the inlet portion 301 in the chamber cavity is located in the accommodating space. The connection structure relationship between the first dispersion plate 308 in the first chamber and the second chamber and the partition plate 307 and the inner side wall of the frame (the side of the frame where the inlet 301 is provided) is shown in the sectional view in fig. 3. The inlet 301 is disposed in a space formed between the first dispersion plate 308 and the partition plate 307.

As shown in fig. 3, in the embodiment of the present application, the conductive plate 304 is a strip-shaped metal plate, one end of the conductive plate connected to the electrode plate is flat, and a portion between the partition plate 307 and the electrode plate has an irregular sheet-like structure. Fig. 3 shows only one shape structure, and any structure that increases the contact area of the conductive plate 304 with the electrolyte may be used as the conductive plate 304 in the embodiment of the present application. Set up as much as possible conducting plate 304 between division board 307 and electrode plate to can improve the current-carrying effect of conducting plate 304 and promote the homogeneity of current distribution, thereby promote the electrolytic efficiency of the electrolytic device of this application embodiment, promote electrolysis gas's productivity.

In the embodiment of the present application, as shown in fig. 3, the first dispersion plate 308 and the second dispersion plate 305 have dispersion holes at different positions, and the dispersion holes are used as the liquid separation holes.

As shown in fig. 1 and 2, in the embodiment of the present application, a separator is further provided between the first electrode plate and the second electrode plate in which the frames of adjacent bipolar frames are stacked. Through set up the diaphragm between adjacent multipole frame, make the electrode board between the multipole frame of this application embodiment isolated each other, all multipole frames work in series each other, do not have any influence after demolising or changing single multipole frame. The embodiment of the application can arrange more electrolytic devices in a limited space by reducing the volume of the bipolar frame, thereby improving the electrolytic efficiency and reducing the manufacturing cost of the electrolytic device.

In the embodiment of the application, a sealing gasket is arranged at the butt joint of two frames in adjacent multipole frames, and the multipole frames arranged in a stacked mode are sealed through the sealing gasket.

As shown in fig. 1 and fig. 2, the electrolyte enters the chamber of the electrolyzer from the inlet 301 at the lower part of the electrolyzer, and under the action of the direct current, oxygen is generated by electrolysis at the anode plate, the electrolyte concentration in the anode chamber is reduced, hydrogen is generated by electrolysis at the cathode plate, and the electrolyte concentration in the cathode chamber is increased. The oxygen and diluted electrolyte, hydrogen and concentrated electrolyte generated after electrolysis flow out of the chamber through an outlet port 306 at the top of the electrolysis device. Under the condition of high current density operation, a large amount of gas is generated in the anode chamber of the cathode chamber in unit time, and in order to ensure the uniform effect of the concentration of liquid in each part in the chamber cavity of the electrolysis device, a first dispersion plate 308, also called a dispersion plate, is added near the inlet part 301 of the electrolysis device in the embodiment of the application so as to ensure that the liquid flowing into the electrolysis device is forcedly distributed to the electrolyte through the first dispersion plate 308, thereby meeting the uniformity of the concentration of the electrolyte in each part in the chamber cavity of the electrolysis device. The upper part of the first dispersion plate 308 is provided with small dispersion holes at different positions to realize the shunting of the electrolyte.

As the electrolysis of the electrolyte proceeds, the gas generated in the electrolysis apparatus is collected together with the electrolyte liquid to the upper part of the electrolysis apparatus, and the gas ratio at the upper part of the electrolysis apparatus is gradually increased, so that the second dispersion plate 305 is added at the upper part of the electrolysis apparatus to divide the gas and liquid collected in the electrolysis apparatus, most of the gas flows into the outlet 306 through the space between the second dispersion plate 305 and the partition plate 307 by the dispersion action of the second dispersion plate 305, and most of the electrolyte liquid and the gas generated by the electrolysis at the position of the second dispersion plate 305 flow to the outlet 306 through the space between the second dispersion plate 305 and the electrode 302.

In order to ensure that the gas-liquid mixture formed by the electrolyte in the embodiment of the present invention can smoothly escape from the chamber of the electrolysis apparatus, so that the outlet 306 has a large flow area, and at the same time, to ensure that the electrolyte liquid in the electrolysis apparatus has a high flow velocity, and to ensure that the gas can smoothly flow out of the electrolysis apparatus along with the liquid, the depth of the chamber of the electrolysis apparatus should be maintained within a small range. This application embodiment is through setting up the division board 307 that contains the heterosexual structure, at export portion 306 mounted position, it is protruding to the opposite aspect of export portion 306 position with division board 307, increase the degree of depth in electrolytic device unilateral room chamber, can guarantee the flow area of export portion 306 like this, can occupy 30% -60% of limit frame 303 thickness, through setting up great outlet passage, can send out electrolytic device's room chamber with the gas-liquid mixture in electrolytic device's room chamber smoothly, thereby promote the stationary cycle of electrolyte, the escape of electrolysis gas in the acceleration electrolyte, simultaneously under the prerequisite that does not influence electrode surface gas volume, the gas-liquid separation effect has been promoted.

The electrolysis apparatus of the embodiment of the present application finally maintains the gas-liquid ratio in the electrolysis apparatus at 40% or less.

In the embodiment of the application, the first dispersion plate 308 is arranged at the inlet part 301, so that the electrolyte can uniformly enter the chamber of the electrolysis device, the consistency of the flow field and the concentration field of the electrolyte in each part of the chamber of the electrolysis device is ensured, and a local flow dead zone is avoided.

The second dispersion plate 305 is arranged at the outlet part 301, so that a gas-liquid channel on the upper part of the chamber of the electrolysis device is divided into two parts, and gas and liquid flow channels are respectively borne, so that the gas-liquid ratio of the part, close to the electrode plate, on the upper part of the chamber of the electrolysis device is ensured to be lower than 40%, the effective electrolysis area of the electrode plate is ensured, and a primary gas-liquid separation effect can be achieved.

In the embodiment of the application, by designing the partition plate with the special-shaped structure, on the premise that the whole thickness of the frame body of the electrolysis device is not increased, the flow area of the outlet part 306 is greatly increased, the flow area is increased by about 20% -100%, the gas generated by electrolysis is ensured to smoothly flow out due to the larger flow area, the whole channel is mainly occupied by the gas, and therefore the gas generated by electrolysis can be smoothly and rapidly moved out from the inside of the electrolysis device, and the gas content in the electrolysis device is greatly reduced.

As shown in fig. 2, the present embodiment further describes a repolarization frame, which includes a side frame 303, a first electrode plate 302, a second electrode plate (not shown in fig. 2), a partition plate 307, a conductive plate 304, a dispersion plate, an inlet 301, and an outlet 306; in the embodiment of the present invention, the side frame 303 is formed by welding four metal plates with a height of 40-80mm, and the whole side frame 303 is a rectangular parallelepiped structure; here, the metal plate may be a stainless steel plate or the like. The partition plate 307 is laid in the middle of the frame body, and serves as a partition plate to divide the side frame 303 into two parts, that is, the frame body is divided into a first chamber and a second chamber. The partition plate 307 is laid in the frame in such a manner as to be substantially parallel to the two openings of the side frame 303. In order to prevent electrolyte leakage, the periphery of the partition plate 307 is fixed and hermetically connected with the frame. As an implementation manner, the partition plate 307 and the side frame 303 may also be made by an integral molding manner, and the integrally molded side frame 303 has better sealing performance, so as to ensure the sealing performance between the first chamber cavity and the second chamber cavity, and avoid liquid leakage between the first chamber cavity and the second chamber cavity. The first electrode plate 302 is covered at the open end of the first chamber cavity; the second electrode plate is covered at the opening end of the second chamber cavity. The first electrode plate 302 is exposed in fig. 2, and the second electrode plate is located at the opening on the other side of the side frame 303.

In the embodiment of the present application, the first electrode plate 302 is an anode plate, and correspondingly, the second electrode plate is a cathode plate. In the embodiment of the present application, the arrangement position of the anode plate or the cathode plate is not limited, and the arrangement position may be set according to actual needs, for example, the first electrode plate 302 may also be the cathode plate, and the second electrode plate is the anode plate, and the like.

The conductive plates include a first conductive plate 304 and a second conductive plate (not shown in fig. 2), a first end of the first conductive plate 304 is electrically connected to the first electrode plate 302, and a second end of the first conductive plate 304 is electrically connected to the first side of the partition plate 307; a first end of the second conductive plate is electrically connected to the second electrode plate, and a second end of the second conductive plate is electrically connected to the second side surface of the separator plate; wherein the first side and the second side are opposite. The conductive plate 304 is long, one end of the conductive plate is connected to the partition plate 307, the other end of the conductive plate is connected to the electrode plate, the conductive plate serves as a support plate of the electrode plate and is electrically connected to the electrode plate, and currents of different polarities input from different sides of the partition plate 307 are respectively introduced to the first electrode plate and the second conductive plate, so that the first electrode plate and the second conductive plate can better electrolyze the electrolyte flowing into the chamber. Through set up a large amount of conducting plates 304 in the chamber intracavity to transmit the electric current to the electrode board smoothly, improve the current-carrying effect of conducting plate 304 and promote the homogeneity of electrode board electric current distribution, promoted the electrolytic efficiency of electrolyte.

The first chamber cavity and the second chamber cavity are respectively provided with an inlet part 301 for the inflow of the electrolyte and an outlet part 306 for the outflow of the electrolyte; the inlet portion 301 is provided on one side surface of the side frame 303, and the outlet portion 306 is provided on the other side surface of the side frame 303 opposite to the inlet portion 301.

The outlet 306 in the first chamber and the outlet 306 in the second chamber are respectively disposed at the left and right ends of the first side surface of the frame body; the left and right sides are taken in the direction of the paper surface in FIG. 2, and are not intended to limit the structure of the electrolysis apparatus according to the embodiment of the present invention.

An inlet 301 in the first chamber and an inlet 301 in the second chamber are respectively arranged at the left end and the right end of the second side surface of the frame body; wherein the side surface is opposite to the second side surface. The inlet part 301 and the outlet part 306 in the first chamber cavity are distributed along the diagonal line of the frame body; and the inlet part and the outlet part in the second chamber cavity are distributed in a diagonal line of the frame body.

The dispersion plates include a first dispersion plate 308 and a second dispersion plate 305; the first dispersion plate 308 is disposed on a side of the chamber cavity adjacent to the inlet portion 301; the second dispersion plate 305 is disposed within the chamber on a side adjacent to the outlet 306; the first dispersion plate 308 and the second dispersion plate 305 are provided with liquid distribution holes.

The repolarization frame structure of the embodiment of the present application can be understood by referring to the related description of the foregoing embodiment, and is not described herein again.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (10)

1. An electrolysis apparatus, characterized in that the apparatus comprises: the device comprises a first extrusion plate, a second extrusion plate and at least one multipole frame; the multipole frame comprises a frame body, wherein a chamber cavity of electrolyte is formed in the frame body, and an inlet part and an outlet part are respectively arranged on the chamber cavity; the bipolar frames are arranged in a stacked manner and fixedly connected; the first extrusion plate is attached to the frame body at the first end of the laminated frame body, and the second extrusion plate is attached to the frame body at the second end of the laminated frame body; the first extrusion plate and the second extrusion plate bear opposite forces, so that the multipole frames in the at least one multipole frame are hermetically connected;

a first electrode plate is arranged on the first side of the multipole frame, and a second electrode plate is arranged on the second side of the multipole frame; the first electrode plate and the second electrode plate are connected with a working power supply and provide electrolytic current for electrolyte in a chamber cavity in the bipolar frame;

still be provided with the dispersion board in the room chamber, the dispersion board is right electrolyte in the room chamber shunts, makes the concentration homogeneity of electrolyte in the room chamber, and promotes the gas release in the electrolyte.

2. The electrolysis apparatus according to claim 1, wherein the bipolar frame comprises a side frame, a first electrode plate, a second electrode plate, a partition plate, a conductive plate, a dispersion plate, an inlet portion, and an outlet portion; the side frames are arranged in a surrounding mode to form a frame body, the partition plate is laid in the middle of the inside of the frame body, the periphery of the partition plate is fixedly connected with the frame body, and the frame body is divided into a first chamber cavity and a second chamber cavity; the first electrode plate is covered at the opening end of the first chamber cavity; the second electrode plate is covered at the opening end of the second chamber cavity;

the first end of the first conductive plate is electrically connected to the first electrode plate, and the second end of the first conductive plate is electrically connected to the first side surface of the partition plate; the first end of the second conductive plate is electrically connected to the second electrode plate, and the second end of the first conductive plate is electrically connected to the second side surface of the partition plate; wherein the first side and the second side are opposite;

the first chamber cavity and the second chamber cavity are respectively provided with an inlet part for the inflow of the electrolyte and an outlet part for the outflow of the electrolyte;

the dispersion plate comprises a first dispersion plate and a second dispersion plate; the first dispersion plate is arranged on one side, close to the inlet, in the chamber cavity; the second dispersion plate is disposed in the chamber cavity on a side adjacent to the outlet portion.

3. The electrolysis device according to claim 2, wherein the distance between the first electrode plate in the bipolar frame and the first side of the separator is smaller than a first set size; the distance between the second electrode plate in the bipolar frame and the second side face of the separation plate is smaller than the first set size;

the outlet caliber of the outlet part is larger than or equal to the first set size;

the part of the partition plate in the first chamber cavity, which is close to the outlet part in the first chamber cavity, is provided with a bent part, the concave part of the bent part is positioned in the first chamber cavity, and the convex part of the bent part is positioned in the second chamber cavity;

the part of the partition plate in the second chamber cavity, which is close to the outlet part in the second chamber cavity, is provided with a bent part, the concave part of the bent part is positioned in the second chamber cavity, and the convex part of the bent part is positioned in the first chamber cavity.

4. The electrolysis apparatus according to claim 3, wherein the outlet portion in the first chamber and the outlet portion in the second chamber are provided at the left and right ends of the third side surface of the frame body, respectively;

the inlet part in the first chamber cavity and the inlet part in the second chamber cavity are respectively arranged at the left end and the right end of the fourth side surface of the frame body; the third side and the fourth side are opposite;

the inlet part and the outlet part in the first chamber cavity are distributed in a diagonal line of the frame body; and the inlet part and the outlet part in the second chamber cavity are distributed in a diagonal line of the frame body.

5. The electrolysis device according to claim 2, wherein one end of the first dispersion plate is fixed on the partition plate, the other end of the first dispersion plate is fixed on the inner side wall of the frame, the first dispersion plate, the partition plate and the side wall of the frame form an accommodating space, and the electrolyte outlet of the inlet part in the chamber is located in the accommodating space.

6. The electrolyzing device as recited in any one of claims 1 to 5, wherein a plurality of liquid distributing holes are formed at different positions on said dispersing plate.

7. The electrolysis apparatus according to claim 6, wherein a separator is provided between the first electrode plate and the second electrode plate in which the frames of adjacent bipolar frames are stacked.

8. The electrolysis device according to claim 6, wherein a sealing gasket is arranged at the butt joint of two frames in adjacent bipolar frames, and the bipolar frames arranged in a stacked manner are sealed by the sealing gasket.

9. A multipole frame structure is characterized in that the multipole frame structure comprises an edge frame, a first electrode plate, a second electrode plate, a partition plate, a conductive plate, a dispersion plate, an inlet part and an outlet part; the side frames are arranged in a surrounding mode to form a frame body, the partition plate is laid in the middle of the inside of the frame body, the periphery of the partition plate is fixedly connected with the frame body, and the frame body is divided into a first chamber cavity and a second chamber cavity; the first electrode plate is covered at the opening end of the first chamber cavity; the second electrode plate is covered at the opening end of the second chamber cavity;

the first end of the first conductive plate is electrically connected to the first electrode plate, and the second end of the first conductive plate is electrically connected to the first side surface of the partition plate; a first end of the second conductive plate is electrically connected to the second electrode plate, and a second end of the second conductive plate is electrically connected to the second side surface of the separator plate; wherein the first side and the second side are opposite;

the first chamber cavity and the second chamber cavity are respectively provided with an inlet part for the inflow of the electrolyte and an outlet part for the outflow of the electrolyte;

the dispersion plate comprises a first dispersion plate and a second dispersion plate; the first dispersion plate is arranged on one side, close to the inlet, in the chamber cavity; the second dispersion plate is arranged on one side, close to the outlet, in the chamber cavity; the first dispersion plate and the second dispersion plate are provided with liquid distribution holes.

10. The bipolar frame structure of claim 9 wherein a distance between the first electrode plate in the bipolar frame and the first side of the separator plate is less than a first set dimension; the distance between the second electrode plate in the bipolar frame and the second side face of the separation plate is smaller than the first set size;

the outlet caliber of the outlet part is larger than or equal to the first set size;

the part of the partition plate in the first chamber cavity, which is close to the outlet part in the first chamber cavity, is provided with a bent part, the concave part of the bent part is positioned in the first chamber cavity, and the convex part of the bent part is positioned in the second chamber cavity;

the part of the partition plate in the second chamber cavity, which is close to the outlet part in the second chamber cavity, is provided with a bent part, the concave part of the bent part is positioned in the second chamber cavity, and the convex part of the bent part is positioned in the first chamber cavity.

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