CN212357411U - Electrolysis chamber suitable for middle and edge air outlet and electrolysis bath thereof - Google Patents

Abstract

The utility model relates to an electrolysis chamber suitable for middle and edge air outlet, which comprises an outer electrolysis chamber and an inner electrolysis chamber, wherein the middle part of the outer electrolysis chamber is provided with a mounting hole, and the inner electrolysis chamber is embedded in the mounting hole of the outer electrolysis chamber; a plurality of liquid inlet holes are formed between the inner electrolysis chamber and the outer electrolysis chamber; a first oxygen outlet and a first hydrogen outlet are formed in the middle of the inner electrolysis chamber; and the edge of the outer electrolysis chamber is provided with a plurality of second oxygen outlets and second hydrogen outlets which are suitable for respectively outputting oxygen and hydrogen generated in the outer electrolysis chamber. An electrolytic cell adopts the electrolytic chamber suitable for middle and edge air outlet, and a plurality of electrolytic chambers are mutually overlapped and combined; the flowing distance of the electrolyte in each electrolytic chamber is shortened, so that the electrolyte can be efficiently subjected to mass transfer in the inner electrolytic chamber and the outer electrolytic chamber, the electrolytic cell is used for preparing gas (oxygen and hydrogen), and the yield of the gas can be improved.

Description

Electrolysis chamber suitable for middle and edge air outlet and electrolysis bath thereof

Technical Field

The utility model relates to an electrolysis chamber suitable for middle part and edge air outlet and an electrolysis bath thereof.

Background

The electrolysis trough is piled up by a plurality of electrolysis rooms and is put together, sets up the ionic membrane in the single electrolysis room to divide negative pole room and anode chamber with the electrolysis room, set up the negative plate in the cathode chamber, set up the anode plate in the anode chamber, electrolyte enters into the electrolysis room, and the water electrolysis divide into hydrogen and oxygen, and the oxygen of anode chamber output is followed oxygen and is walked out output, and the hydrogen of cathode chamber output is walked out output from hydrogen.

One known construction of an electrolysis cell, the so-called filter-press construction, is disclosed in the cited patent US 4758322. A large number of bipolar batteries are stacked in series and are commonly disposed between two end plates that are interconnected by tie rods. Each of the bipolar cells includes an anode chamber and a cathode chamber separated by a diaphragm or membrane. In turn, each cell is separated from the next by a conductive wall, a so-called bipolar plate, having opposite polarities on both surfaces. The cell stacks are arranged together by end plates connected at the ends of the anode (+) and cathode (-) forming the stack. The end plates are forced towards each other by tie rods which are electrically insulated to avoid short circuiting of the cells. A liquid electrolyte is added to the cell and the gases produced are collected from the cell.

The problems of the current electrolytic cell are as follows: the circulation path of the electrolyte in the electrolytic chamber is long, and the electrolyte cannot carry out high-efficiency mass transfer; the reason is that: when the electrolyte just enters the electrolytic chamber, the mass transfer efficiency is highest, the most hydrogen and oxygen can be produced, and as the flowing distance of the electrolyte increases, the partial pressure of the gas electrolyzed by the electrode plate in the electrolyte increases, so that the diffusion gradient of the gas on the electrode to the electrolyte is reduced, the diffusion speed or the mass transfer speed is reduced, and the occurrence of electrolytic reaction is not facilitated; the diameter of a traditional circular electrolytic chamber reaches 2-3 meters, electrolyte enters from the bottom of the electrolytic chamber, generated hydrogen, oxygen, a mixture of gas and electrolyte are discharged from a top gas outlet channel along with electrolytic reaction, the path of circulation of the electrolyte in the electrolytic chamber is the diameter length of the electrolytic chamber, and due to the design that the bottom is input, the top is output and the electrolyte needs to cross the whole electrolytic chamber in the past, the electrolytic cell (electrolytic chamber) cannot efficiently produce gas, and the yield of the gas (hydrogen and oxygen) is influenced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the defects of the prior art are overcome, and the electrolytic chamber and the electrolytic cell suitable for middle and edge gas outlet are provided to solve the problems that the electrolyte circulation mode is unreasonable and the electrolyte mass transfer efficiency is low, so that the gas preparation of the electrolytic cell is influenced.

The utility model provides a technical scheme that its technical problem adopted is: an electrolytic chamber suitable for middle and edge air outlet comprises an outer electrolytic chamber and an inner electrolytic chamber, wherein a mounting hole is formed in the middle of the outer electrolytic chamber, and the inner electrolytic chamber is embedded in the mounting hole of the outer electrolytic chamber;

a plurality of liquid inlet holes are formed between the inner electrolysis chamber and the outer electrolysis chamber and are suitable for inputting electrolyte into the inner electrolysis chamber and the outer electrolysis chamber;

the middle part of the inner electrolysis chamber is provided with a first oxygen outlet and a first hydrogen outlet which are suitable for respectively outputting oxygen and hydrogen generated in the inner electrolysis chamber;

and the edge of the outer electrolysis chamber is provided with a plurality of second oxygen outlets and second hydrogen outlets which are suitable for respectively outputting oxygen and hydrogen generated in the outer electrolysis chamber.

Further, the device comprises two spacer ring assemblies, an outer sealing element, a middle sealing element and an inner sealing element;

the spacer assembly comprises an outer spacer, a middle spacer, an inner spacer, an outer partition and an inner partition, the outer partition is fixedly arranged between the outer spacer and the middle spacer, and the inner partition is fixedly arranged between the middle spacer and the inner spacer;

the two outer partition rings clamp the outer sealing elements, the two middle partition ring clamp the middle sealing elements and the two inner partition ring clamp the inner sealing elements, so that the outer electrolysis chamber is formed between the two outer partition plates and the inner electrolysis chamber is formed between the two inner partition plates;

the middle partition ring is provided with a plurality of liquid inlet holes which are communicated with the inner electrolysis chamber and the outer electrolysis chamber, and the middle sealing element is provided with a liquid inlet through hole so as to be communicated with the liquid inlet holes on the adjacent middle partition rings;

the inner partition ring is provided with at least one first oxygen outlet and at least one first hydrogen outlet, the inner sealing element is provided with at least one first oxygen through hole to communicate the first oxygen outlet on the adjacent inner partition ring, and the inner sealing element is provided with at least one first hydrogen through hole to communicate the first hydrogen outlet on the adjacent inner partition ring;

the outer space ring is provided with at least one second oxygen hole and at least one second hydrogen hole, and the outer sealing element is provided with at least one second oxygen through hole to communicate with the second oxygen holes on the adjacent outer space ring and at least one second hydrogen through hole to communicate with the second hydrogen holes on the adjacent outer space ring.

In another aspect, the electrolytic cell adopts the electrolytic chamber suitable for middle and edge air outlet,

a plurality of electrolysis chambers are mutually overlapped and combined;

each liquid inlet hole forms a liquid inlet channel;

each first oxygen outlet hole is communicated in a one-to-one correspondence mode and forms a first oxygen output channel;

the first hydrogen outlets are communicated in a one-to-one correspondence manner and form a first hydrogen output channel;

the second oxygen outlets are communicated one by one to form a second oxygen output channel;

and the second hydrogen outlets are communicated in a one-to-one correspondence manner and form a second hydrogen output channel.

The utility model has the advantages that:

the utility model provides an electrolysis chamber and electrolysis trough that is suitable for middle part, edge to give vent to anger, divide into inside and outside two electrolysis chambers with the electrolysis chamber, inlay in outer electrolysis chamber in the interior electrolysis chamber, electrolyte inputs the back between two electrolysis chambers, the electrolyte of interior electrolysis chamber flows to the middle part, the electrolyte of outer electrolysis chamber flows to the edge, the flow distance of electrolyte shortens in every electrolysis chamber, thereby can make electrolyte can be high-efficient at inside and outside two electrolysis chamber mass transfer, be used for preparing gas (oxygen and hydrogen) with this electrolysis trough, can promote gaseous output.

Drawings

The present invention will be further explained with reference to the accompanying drawings.

FIG. 1 is a schematic view of an electrolytic cell of the present invention;

FIG. 2 is a schematic view of an electrolysis chamber (with the outer and inner separators removed);

FIG. 3 is a half sectional view of the hydrogen outlet of the outer electrolysis chamber;

FIG. 4 is a schematic view of an outer spacer second hydrogen outlet hole;

FIG. 5 is a schematic view of a liquid inlet hole in the mid-partition ring;

FIG. 6 is a schematic illustration of an inner spacer;

FIG. 7 is a schematic view of an electrolytic cell;

the gas-liquid separator comprises an outer spacer ring 1, an outer spacer ring 2, a middle spacer ring 3, an inner spacer ring 41, an outer sealing element 42, a middle sealing element 43, an inner sealing element 5, a radial communication port 11, a second oxygen outlet hole 12, a second hydrogen outlet hole 21, a liquid inlet hole 31, a first oxygen outlet hole 32, a first hydrogen outlet hole 61, an outer partition plate 62, an inner partition plate 7 and an ion membrane.

Detailed Description

The invention will now be further described with reference to specific embodiments. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

Example one

As shown in fig. 1 to 6, an electrolytic chamber suitable for middle and edge air outlet comprises an outer electrolytic chamber and an inner electrolytic chamber, wherein a mounting hole is formed in the middle of the outer electrolytic chamber, and the inner electrolytic chamber is embedded in the mounting hole of the outer electrolytic chamber; a plurality of liquid inlet holes 21 are formed between the inner electrolysis chamber and the outer electrolysis chamber and are suitable for inputting electrolyte into the inner electrolysis chamber and the outer electrolysis chamber;

a first oxygen outlet hole 31 and a first hydrogen outlet hole 32 are formed in the middle of the inner electrolytic chamber and are suitable for respectively outputting oxygen and hydrogen generated in the inner electrolytic chamber; the edge of the outer electrolysis chamber is provided with a plurality of second oxygen outlets 11 and second hydrogen outlets 12, which are suitable for respectively outputting the oxygen and the hydrogen generated in the outer electrolysis chamber.

Specifically, the sealing device comprises two spacer ring assemblies, an outer sealing member 41, a middle sealing member 42 and an inner sealing member 43;

the space ring assembly comprises an outer space ring 1, a middle space ring 2, an inner space ring 3, an outer partition plate 61 and an inner partition plate 62, wherein the outer partition plate 61 is fixedly arranged between the outer space ring 1 and the middle space ring 2, and the inner partition plate 62 is fixedly arranged between the middle space ring 2 and the inner space ring 3;

two outer spacers 1 clamp the outer seal 41, two middle spacers 2 clamp the middle seal 42, two inner spacers 3 clamp the inner seal 43, so that the outer electrolysis chamber is formed between two outer partition boards 61, and the inner electrolysis chamber is formed between two inner partition boards 62;

the middle spacing ring 2 is provided with a plurality of liquid inlet holes 21, as shown in fig. 5, the liquid inlet holes 21 are communicated with the inner electrolysis chamber and the outer electrolysis chamber, and the middle sealing element 42 is provided with liquid inlet through holes to communicate the liquid inlet holes 21 on the adjacent middle spacing rings 2;

as shown in fig. 6, the inner spacer 3 is provided with a first oxygen outlet hole 31 and a first hydrogen outlet hole 32, the inner sealing member 43 is provided with a first oxygen through hole to communicate with the first oxygen outlet hole 31 of the adjacent inner spacer 3, and a first hydrogen through hole to communicate with the first hydrogen outlet hole 32 of the adjacent inner spacer 3.

As shown in fig. 4, the outer ring spacer 1 is provided with a plurality of second oxygen holes 11 and a plurality of second hydrogen holes 12, and the outer sealing member 41 is provided with a corresponding number of second oxygen through holes to communicate with the second oxygen holes 11 of the adjacent outer ring spacer and a corresponding number of second hydrogen through holes to communicate with the second hydrogen holes 12 of the adjacent outer ring spacer.

The internal structure of the inner and outer electrolysis chambers of the utility model has the same principle with the structure of the prior electrolysis chamber;

in this embodiment, optionally, the inside ionic membrane 7 that sets up of electrolysis chamber, ionic membrane 7 divide electrolysis chamber into cathode chamber and anode chamber, set up the negative plate in the cathode chamber, set up the anode plate in the anode chamber, anode chamber output oxygen, and output oxygen (can have partial electrolyte) is discharged from the oxygen outlet, and output hydrogen (can have partial electrolyte) is discharged from the hydrogen outlet.

In this embodiment, the cathode plate and the anode plate are made of nickel wire mesh;

preferably, a support frame and a support net are further arranged between the cathode plate and the separator for supporting the cathode plate, a diversion trench is formed in the support frame and is suitable for diversion of electrolyte, and similarly, a support frame and a support net are also arranged between the anode plate and the separator and are also suitable for supporting the anode plate and diversion of electrolyte.

As shown in fig. 3, a half-sectional view of the first hydrogen outlet 32 of the outer electrolytic chamber is taken, an ionic membrane 7 is arranged in the electrolytic chamber, an anode chamber is formed between the ionic membrane 7 and the outer partition plate 61 on the left side, a cathode chamber is formed between the ionic membrane 7 and the outer partition plate 61 on the right side, and the radial communication port 5 of the second hydrogen outlet on the outer partition ring on the right side is communicated with the cathode chamber, so that hydrogen (carrying part of electrolyte) generated in the cathode chamber can be input into the first hydrogen outlet 32 from the radial communication port 5 and then output outwards together; the oxygen generated in the anode chamber on the left side is communicated through the radial communication port 5 on the second oxygen outlet hole 11.

The end surface of one side of the oxygen outlet hole and the hydrogen outlet hole on each outer spacing ring is provided with a radial communicating port 5, and the radial communicating port 5 on the outer spacing ring is used for communicating an outer electrolysis chamber;

the end surfaces of two sides of the liquid inlet hole 21 on the middle partition ring 2 are also respectively provided with a radial communicating port 5, and the radial communicating ports 5 on the middle partition ring 2 are used for communicating the inner electrolysis chamber and the outer electrolysis chamber on two sides;

the end surfaces of one side of the oxygen outlet and the hydrogen outlet on the inner partition ring 3 are provided with radial communicating ports 5, and the radial communicating ports 5 on the inner partition ring 3 are used for communicating the inner electrolysis chamber;

during operation, the electrolyte is input into the inner electrolysis chamber and the outer electrolysis chamber from the liquid inlet hole 21, the electrolyte in the outer electrolysis chamber flows from the inner side to the edge, the oxygen (and part of electrolyte) generated in the outer electrolysis chamber is discharged from the second oxygen outlet hole 11, and the generated hydrogen (and part of electrolyte) is discharged from the second hydrogen outlet hole 12; the electrolyte in the inner electrolytic chamber flows from the outside to the center, the oxygen gas (and part of the electrolyte) generated in the inner electrolytic chamber is discharged from the first oxygen outlet hole 31, and the hydrogen gas (and part of the electrolyte) generated is discharged from the first hydrogen outlet hole 32.

The utility model discloses an electrolysis chamber divide into inside and outside two electrolysis chambers with the electrolysis chamber, and the interior electrolysis chamber inlays in outer electrolysis chamber, and electrolyte is followed the back of inputing between two electrolysis chambers, and the electrolyte of interior electrolysis chamber flows to the middle part, and the electrolyte of outer electrolysis chamber flows to the edge, and the flow distance of electrolyte shortens in every electrolysis chamber to can make electrolyte can high-efficient mass transfer in inside and outside two electrolysis chambers, be used for preparing gas (oxygen and hydrogen) with this electrolysis trough, can promote gaseous output.

Example two

As shown in figure 7, an electrolytic cell adopts the electrolytic chamber suitable for middle and edge air outlet,

a plurality of electrolysis chambers are mutually overlapped and combined;

each middle space ring 2 and the middle sealing element 42 are superposed and combined, so that the liquid inlet holes 21 form a liquid inlet channel; the inner partition rings 3 and the inner sealing pieces 43 are combined in a superposition mode, so that the first oxygen outlets 31 are communicated in a one-to-one correspondence mode and form a first oxygen output channel; so that the first hydrogen outlets 32 are communicated in a one-to-one correspondence and form a first hydrogen output channel;

the outer space rings and the outer sealing pieces 41 are superposed and combined, so that the second oxygen outlets 11 are correspondingly communicated one by one to form a second oxygen output channel; the second hydrogen outlets 12 are communicated in a one-to-one correspondence and form a second hydrogen output channel.

How to combine and stack the electrolytic chambers belongs to the prior art means in the field, and is not described herein.

The electrolytic cell is applied to water electrolysis hydrogen production, when the water electrolysis hydrogen production is carried out, electrolyte is input into an electrolytic chamber from a liquid inlet in the middle for reaction, hydrogen and oxygen are separated, the hydrogen and part of the electrolyte are discharged from a hydrogen outlet, a mixture of the hydrogen and the electrolyte is separated through a gas-liquid separator, and the separated hydrogen is filled for use; and discharging oxygen and part of electrolyte from an oxygen outlet, separating the oxygen and electrolyte mixture through a gas-liquid separator, and filling the separated oxygen for use.

The electrolytic cell of the embodiment is applied to chlor-alkali electrolysis hydrogen production, and corresponding oxygen is changed into chlorine.

The electrolytic cell of the present embodiment can also be applied to a hydrogen fuel cell; when the electrolytic cell is used as a hydrogen fuel cell, the operation flow of the electrolytic cell is opposite, when the electrolytic cell is used as a hydrogen production tool, electricity is consumed to generate gas, and when the electrolytic cell is used as the hydrogen fuel cell, the electricity is consumed (hydrogen and oxygen) to generate electricity.

When the electrolytic cell is used as a hydrogen fuel cell, hydrogen and oxygen are input from a hydrogen output port and an oxygen output port, gas flows from the edge of the electrolytic chamber to the center, and a cathode bar and an anode bar of the electrolytic cell generate electric output to form current; gas passes through the electrode surface along with gas in the electrolysis chamber, and gas concentration diminishes, causes electrolyte to diminish to the electrode surface diffusion gradient, and unfavorable mass transfer (mass transfer speed slows down) is unfavorable for the electrode reaction to take place, promotes the generating efficiency.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (3)

1. An electrolytic chamber suitable for middle and edge air outlet is characterized by comprising an outer electrolytic chamber and an inner electrolytic chamber, wherein a mounting hole is formed in the middle of the outer electrolytic chamber, and the inner electrolytic chamber is embedded in the mounting hole of the outer electrolytic chamber;

a plurality of liquid inlet holes are formed between the inner electrolysis chamber and the outer electrolysis chamber and are suitable for inputting electrolyte into the inner electrolysis chamber and the outer electrolysis chamber;

the middle part of the inner electrolysis chamber is provided with a first oxygen outlet and a first hydrogen outlet which are suitable for respectively outputting oxygen and hydrogen generated in the inner electrolysis chamber;

and the edge of the outer electrolysis chamber is provided with a plurality of second oxygen outlets and second hydrogen outlets which are suitable for respectively outputting oxygen and hydrogen generated in the outer electrolysis chamber.

2. The electrolytic cell of claim 1 adapted for mid-edge gassing, comprising

The sealing device comprises two space ring assemblies, an outer sealing piece, a middle sealing piece and an inner sealing piece;

the spacer assembly comprises an outer spacer, a middle spacer, an inner spacer, an outer partition and an inner partition, the outer partition is fixedly arranged between the outer spacer and the middle spacer, and the inner partition is fixedly arranged between the middle spacer and the inner spacer;

the two outer partition rings clamp the outer sealing elements, the two middle partition ring clamp the middle sealing elements and the two inner partition ring clamp the inner sealing elements, so that the outer electrolysis chamber is formed between the two outer partition plates and the inner electrolysis chamber is formed between the two inner partition plates;

the middle partition ring is provided with a plurality of liquid inlet holes which are communicated with the inner electrolysis chamber and the outer electrolysis chamber, and the middle sealing element is provided with a liquid inlet through hole so as to be communicated with the liquid inlet holes on the adjacent middle partition rings;

the inner partition ring is provided with at least one first oxygen outlet and at least one first hydrogen outlet, the inner sealing element is provided with at least one first oxygen through hole to communicate the first oxygen outlet on the adjacent inner partition ring, and the inner sealing element is provided with at least one first hydrogen through hole to communicate the first hydrogen outlet on the adjacent inner partition ring;

the outer space ring is provided with at least one second oxygen hole and at least one second hydrogen hole, and the outer sealing element is provided with at least one second oxygen through hole to communicate with the second oxygen holes on the adjacent outer space ring and at least one second hydrogen through hole to communicate with the second hydrogen holes on the adjacent outer space ring.

3. An electrolytic cell, characterized in that the electrolytic chamber suitable for middle and edge air outlet of any claim 1-2 is adopted,

a plurality of electrolysis chambers are mutually overlapped and combined;

each liquid inlet hole forms a liquid inlet channel;

each first oxygen outlet hole is communicated in a one-to-one correspondence mode and forms a first oxygen output channel;

the first hydrogen outlets are communicated in a one-to-one correspondence manner and form a first hydrogen output channel;

the second oxygen outlets are communicated one by one to form a second oxygen output channel;

and the second hydrogen outlets are communicated in a one-to-one correspondence manner and form a second hydrogen output channel.

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