CN211947232U - Electrolysis chamber suitable for bottom and middle liquid inlet and electrolysis bath thereof - Google Patents

Abstract

The utility model relates to an electrolysis chamber suitable for feeding liquid from the bottom and the middle part, which is divided into an upper electrolysis chamber and a lower electrolysis chamber which are independent; a plurality of first liquid inlet holes are formed in the edge of the lower electrolytic chamber; the upper part of the lower electrolysis chamber is provided with a first oxygen outlet and a first hydrogen outlet; the lower part of the upper electrolytic chamber is provided with a plurality of second liquid inlet holes; a plurality of second oxygen outlets and second hydrogen outlets are formed in the edge of the upper electrolytic chamber; adapted to output oxygen and hydrogen produced in the upper electrolysis chamber. An electrolytic cell adopts the electrolytic chamber suitable for feeding liquid from the bottom and the middle part; a plurality of electrolysis chambers are combined in a mutually superposed manner. The electrolytic chamber is divided into an upper electrolytic chamber and a lower electrolytic chamber which are independent, and the distance between the liquid inlet of the electrolyte and the gas outlet is shortened, so that the electrolyte can be efficiently subjected to mass transfer in the 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 bottom and middle liquid inlet and electrolysis bath thereof

Technical Field

The utility model relates to an electrolysis chamber suitable for feeding liquid from the bottom and the middle part and an electrolysis bath thereof.

Background

The electrolytic cell is formed by stacking and combining a plurality of electrolytic chambers, an ionic membrane is arranged in a single electrolytic chamber to divide the electrolytic chamber into a cathode chamber and an anode chamber, a cathode plate is arranged in the cathode chamber, an anode plate is arranged in the anode chamber, electrolyte enters the electrolytic chamber, water is electrolyzed into hydrogen and oxygen, the oxygen produced by the anode chamber is output from an oxygen outlet, and the hydrogen produced by the cathode chamber is output from a hydrogen outlet;

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 thereof suitable for feeding liquid from the bottom and the middle part 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 feeding liquid from the bottom and the middle,

the electrolysis chamber is divided into an upper electrolysis chamber and a lower electrolysis chamber which are independent;

the edge of the lower electrolytic chamber is provided with a plurality of first liquid inlet holes which are suitable for inputting electrolyte into the lower electrolytic chamber;

the upper part of the lower electrolysis chamber is provided with a first oxygen outlet and a first hydrogen outlet; is suitable for outputting the oxygen and the hydrogen generated in the lower electrolytic chamber;

the lower part of the upper electrolytic chamber is provided with a plurality of second liquid inlet holes which are suitable for inputting electrolyte into the upper electrolytic chamber;

a plurality of second oxygen outlets and second hydrogen outlets are formed in the edge of the upper electrolytic chamber; adapted to output oxygen and hydrogen produced in the upper electrolysis chamber.

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

the space ring assembly comprises an outer space ring, an inner partition plate and a side partition plate, wherein the inner partition plate is arranged in the outer space ring to divide the outer space ring into an upper half hole and a lower half hole, and the side partition plate is fixedly arranged on the outer side of the outer space ring;

the inner spacer is fixedly connected with the inner partition plate, the upper half part of the inner spacer is positioned in the upper half hole, and the lower half part of the inner spacer is positioned in the lower half hole;

each first liquid inlet hole is formed in the lower half edge of the outer spacing ring, and a first oxygen outlet hole and a first hydrogen outlet hole are formed in the lower half part of the inner spacing ring; each second liquid inlet hole is formed in the upper half part of the inner partition ring, and each second oxygen outlet hole and each second hydrogen outlet hole are formed in the upper half edge of the outer partition ring;

the two outer partition rings clamp the outer sealing element, the two inner partition rings clamp the inner sealing element to form an electrolysis chamber, and the two inner partition plates are hermetically attached to form an upper electrolysis chamber and a lower electrolysis chamber;

a plurality of first liquid inlet through holes are formed in the lower half edge of the outer sealing element so as to be communicated with the first liquid inlet holes in the adjacent outer spacing rings; a plurality of first hydrogen through holes are formed in the lower half part of the inner sealing element to communicate with first hydrogen outlets of adjacent inner partition rings; the first oxygen through holes are formed to communicate with the first oxygen outlets of the adjacent inner partition rings;

the upper half part of the inner sealing element is provided with a second liquid inlet through hole so as to communicate with a second liquid inlet hole on the adjacent inner spacer; the upper edge of the outer sealing piece is provided with a plurality of second hydrogen through holes so as to communicate with second hydrogen outlets of adjacent outer space rings; and a plurality of second oxygen through holes are formed to communicate with the second oxygen holes of the adjacent outer spacing rings.

Furthermore, the inner partition board penetrates through the side partition board and extends outwards to form an outer partition board.

Further, the inner spacer ring comprises an upper spacer block and a lower spacer block;

the inner seal includes an inner upper seal and an inner lower seal.

In another aspect, the electrolytic cell adopts the electrolytic chamber suitable for feeding liquid from the bottom and the middle part;

a plurality of electrolysis chambers are mutually overlapped and combined;

the first liquid inlet holes of the lower electrolysis chambers form a first liquid inlet channel, the first oxygen outlets are communicated in a one-to-one correspondence mode to form a first oxygen output channel, and the first hydrogen outlets are communicated in a one-to-one correspondence mode to form a first hydrogen output channel;

the second liquid inlet holes of the upper electrolysis chambers form second liquid inlet channels, the second oxygen outlets are communicated one by one to form second oxygen output channels, and the second hydrogen outlets are communicated one by one to form second hydrogen output channels.

The utility model has the advantages that:

the utility model provides an electrolysis chamber and electrolysis trough, divide the electrolysis chamber into two independent electrolysis chambers about, shorten the distance between the inlet of electrolyte and the gas outlet hole to can make electrolyte can be high-efficient in the 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 perspective view of the electrolytic cell of the present invention;

FIG. 2 is a structural diagram of the inner spacer ring, the outer spacer ring and the inner spacer plate of the present invention;

FIG. 3 is a schematic view of two inner spacer clamping inner seals;

FIG. 4 is a half sectional view of the edge of the upper electrolytic chamber at the hydrogen outlet;

FIG. 5 is a schematic view of the electrolytic cell of the present invention;

the gas-liquid separator comprises an outer spacer ring 1, an inner spacer ring 2, an inner spacer ring 31, an outer sealing element 32, an inner sealing element 4, a side partition plate 5, an inner partition plate 61, a first liquid inlet hole 62, a first hydrogen outlet hole 63, a first oxygen outlet hole 71, a second liquid inlet hole 72, a second hydrogen outlet hole 73, a second oxygen outlet hole 8, a radial communication port 9 and an ionic 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

An electrolytic chamber suitable for liquid inlet at the bottom and the middle part is divided into an upper electrolytic chamber and a lower electrolytic chamber which are independent;

the edge of the lower electrolytic chamber is provided with a plurality of first liquid inlet holes 61 which are suitable for inputting electrolyte into the lower electrolytic chamber;

the upper part of the lower electrolysis chamber is provided with a first oxygen outlet 63 and a first hydrogen outlet 62; is suitable for outputting the oxygen and the hydrogen generated in the lower electrolytic chamber;

the lower part of the upper electrolytic chamber is provided with a plurality of second liquid inlet holes 71 which are suitable for inputting electrolyte into the upper electrolytic chamber;

a plurality of second oxygen outlets 73 and second hydrogen outlets 72 are formed in the edge of the upper electrolytic chamber; adapted to output oxygen and hydrogen produced in the upper electrolysis chamber.

Specifically, in the present embodiment, the electrolytic cell includes two spacer ring assemblies, an outer sealing member 31 and an inner sealing member 32; the space ring assembly comprises an outer space ring 1, an inner space ring 2, an inner partition plate 5 and a side partition plate 4, wherein the inner partition plate 5 is arranged in the outer space ring 1 to divide the outer space ring 1 into an upper half hole and a lower half hole, and the side partition plate 4 is fixedly arranged on the outer side of the outer space ring 1;

the inner spacer 2 is fixedly connected with the inner partition plate 5, the upper half part of the inner spacer 2 is positioned in the upper half hole, and the lower half part of the inner spacer is positioned in the lower half hole;

each first liquid inlet hole 61 is formed in the lower half edge of the outer spacing ring 1, and a first oxygen outlet hole 63 and a first hydrogen outlet hole 62 are formed in the lower half part of the inner spacing ring 2; each second liquid inlet hole 71 is formed in the upper half part of the inner partition ring 2, and each second oxygen outlet hole 73 and each second hydrogen outlet hole 72 are formed in the upper half edge of the outer partition ring 1;

the two outer space rings 1 clamp an outer sealing element 31, the two inner space rings 2 clamp an inner sealing element 32 to form an electrolysis chamber, and the two inner partition plates 5 are in sealing fit to form an upper electrolysis chamber and a lower electrolysis chamber;

a plurality of first liquid inlet through holes are formed in the lower half edge of the outer sealing element 31 so as to be communicated with the first liquid inlet holes 61 on the adjacent outer spacing rings 1; a plurality of first hydrogen through holes are formed in the lower half part of the inner sealing element 32 to communicate with first hydrogen outlets 62 of the adjacent inner partition rings 2; and a first oxygen outlet 63 opened with a plurality of first oxygen through holes to communicate with the adjacent inner partition 2.

The upper half part of the inner sealing element 32 is provided with a second liquid inlet through hole to communicate with a second liquid inlet hole 71 on the adjacent inner spacer 2; a plurality of second hydrogen through holes are formed in the upper edge of the outer sealing member 31 so as to communicate with the second hydrogen holes 72 of the adjacent outer space ring 1; and a second oxygen through hole 73 opened with a plurality of second oxygen through holes to communicate with the adjacent outer space ring 1.

In this embodiment, the inner partition 5 protrudes through the side partition 4 to form an outer partition. The outer partition can be used as an inner partition 5 of an adjacent electrolytic cell when the electrolytic cells are combined in a stack.

In this embodiment, the inner spacer 2 may be an integral piece and fixed by penetrating through the inner spacer 5, or the inner spacer 2 may be divided into an upper spacer and a lower spacer, where the upper spacer is the upper half and the lower spacer is the lower half, and then fixed on the inner spacer 5 respectively. Accordingly, the inner seal 32 may be equally divided into a semi-circular upper seal and a semi-circular inner lower seal.

The internal structure of the electrolysis chamber of the utility model has the same principle as the structure of the existing electrolysis chamber;

in this embodiment, preferably, the inside of the electrolysis chamber is provided with the ionic membrane 9, the ionic membrane 9 is vertically arranged in the electrolysis chamber, the electrolytic chamber is divided into a cathode chamber and an anode chamber by the ionic membrane 9, a cathode plate is arranged in the cathode chamber, an anode plate is arranged in the anode chamber, the anode chamber produces oxygen, the produced oxygen (with part of electrolyte) is discharged from the oxygen outlet, and the produced hydrogen (with part of 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.

A radial communication port 8 is formed in the end wall of one side of the first liquid inlet hole 61 on the lower edge of the outer spacing ring 1 and the second liquid inlet hole 71 on the upper half part of the inner spacing ring 2, the other side is an end plane, the end plane can be sealed after the connection, and the radial communication port 8 is used for communicating an electrolytic chamber, so that the electrolyte can be input into the electrolytic chamber; the outer space ring 1, the outer sealing element 31 and the outer space ring 1 are sequentially arranged, the hole channel of the liquid inlet hole is sequentially overlapped with the liquid inlet hole, the liquid inlet through hole and the liquid inlet hole, the outer space ring 1, the outer sealing element 31 and the outer space ring 1 are clamped, the liquid inlet hole and the through hole are kept sealed, and electrolyte in the liquid inlet hole channel can only be input into an electrolytic chamber from the radial communicating port 8.

As for the structures of the oxygen outlet hole and the hydrogen outlet hole, which are the same as the structures of the liquid inlet hole and communicated with the electrolysis chamber through the radial communication port 8, as shown in fig. 4, a cross-sectional view of the hydrogen outlet hole at the edge of the electrolysis chamber is shown, an anode chamber is formed between the ionic membrane 9 and the left inner-dense side partition plate 4, a cathode chamber is formed between the ionic membrane 9 and the right inner-dense side partition plate 4, the radial communication port 8 is arranged on the left side of the hydrogen outlet hole on the right outer partition ring 1, the right side is an end plane, the radial communication port 8 can be just communicated with the cathode chamber on the right side, hydrogen (with partial electrolyte) is input into the hydrogen outlet hole, and in this time, the radial communication port 8 on the left outer partition ring 1 cannot be communicated with the anode chamber on the left side, so that oxygen is prevented from being mixed into.

In the electrolytic chamber of the present embodiment, the electrolyte inputted from the first liquid inlet 61 flows from bottom to top in the lower electrolytic chamber, the distance of the electrolyte flowing in the entire lower electrolytic chamber is a radial distance, the path is shortened by half, and the oxygen and oxygen generated by the reaction are respectively discharged from the first oxygen outlet 63 and the first hydrogen outlet 62 of the inner partition 2.

Similarly, electrolyte is input into the upper electrolytic chamber through the second liquid inlet hole 71, the electrolyte also flows from bottom to top, the distance of electrolyte circulation in the whole upper electrolytic chamber is a radius distance, the path is shortened by half, and oxygen generated by reaction are respectively discharged from the second oxygen outlet 73 and the second hydrogen outlet 72 of the inner partition 2.

The utility model discloses an electrolysis chamber separates the electrolysis chamber for upper and lower two independent electrolysis chambers, shortens the inlet of electrolyte and the distance between the gaseous hole that leaves to can make electrolyte can be high-efficient in the electrolysis chamber mass transfer, be used for preparing gas (oxygen and hydrogen) with this electrolysis trough, can promote gaseous output.

Example two

As shown in FIG. 5, an electrolytic cell adopts the electrolytic chamber suitable for feeding liquid from the bottom and the middle part;

a plurality of electrolysis chambers are mutually overlapped and combined;

the first liquid inlet holes 61 of the lower electrolysis chambers form a first liquid inlet channel;

the first oxygen outlets 63 are communicated in a one-to-one correspondence manner and form a first oxygen output channel, and the first oxygen output channel is communicated with the anode chambers of the lower electrolysis chambers; similarly, the first hydrogen outlets 62 are communicated in a one-to-one correspondence manner and form a first hydrogen output channel, and the first hydrogen output channel is communicated with the cathode chambers of the lower electrolysis chambers;

the second liquid inlet hole 71 of each upper electrolytic chamber forms a second liquid inlet channel;

the second oxygen outlets 73 are communicated one by one and form a second oxygen output channel, and the second oxygen outlets 73 are communicated with the anode chambers of the upper electrolysis chambers;

the second hydrogen outlets 72 are communicated in a one-to-one correspondence manner and form a second hydrogen output channel; the hydrogen output channel is communicated with the cathode chambers of the upper electrolysis chambers;

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 (5)

1. An electrolysis chamber suitable for feeding liquid from the bottom and the middle part is characterized in that,

the electrolysis chamber is divided into an upper electrolysis chamber and a lower electrolysis chamber which are independent;

the edge of the lower electrolytic chamber is provided with a plurality of first liquid inlet holes which are suitable for inputting electrolyte into the lower electrolytic chamber;

the upper part of the lower electrolysis chamber is provided with a first oxygen outlet and a first hydrogen outlet; is suitable for outputting the oxygen and the hydrogen generated in the lower electrolytic chamber;

the lower part of the upper electrolytic chamber is provided with a plurality of second liquid inlet holes which are suitable for inputting electrolyte into the upper electrolytic chamber;

a plurality of second oxygen outlets and second hydrogen outlets are formed in the edge of the upper electrolytic chamber; adapted to output oxygen and hydrogen produced in the upper electrolysis chamber.

2. The electrolytic cell adapted for bottom and middle feed liquid of claim 1 comprising two spacer ring assemblies, an outer seal and an inner seal;

the space ring assembly comprises an outer space ring, an inner partition plate and a side partition plate, wherein the inner partition plate is arranged in the outer space ring to divide the outer space ring into an upper half hole and a lower half hole, and the side partition plate is fixedly arranged on the outer side of the outer space ring;

the inner spacer is fixedly connected with the inner partition plate, the upper half part of the inner spacer is positioned in the upper half hole, and the lower half part of the inner spacer is positioned in the lower half hole;

each first liquid inlet hole is formed in the lower half edge of the outer spacing ring, and a first oxygen outlet hole and a first hydrogen outlet hole are formed in the lower half part of the inner spacing ring; each second liquid inlet hole is formed in the upper half part of the inner partition ring, and each second oxygen outlet hole and each second hydrogen outlet hole are formed in the upper half edge of the outer partition ring;

the two outer partition rings clamp the outer sealing element, the two inner partition rings clamp the inner sealing element to form an electrolysis chamber, and the two inner partition plates are hermetically attached to form an upper electrolysis chamber and a lower electrolysis chamber;

a plurality of first liquid inlet through holes are formed in the lower half edge of the outer sealing element so as to be communicated with the first liquid inlet holes in the adjacent outer spacing rings; a plurality of first hydrogen through holes are formed in the lower half part of the inner sealing element to communicate with first hydrogen outlets of adjacent inner partition rings; the first oxygen through holes are formed to communicate with the first oxygen outlets of the adjacent inner partition rings;

the upper half part of the inner sealing element is provided with a second liquid inlet through hole so as to communicate with a second liquid inlet hole on the adjacent inner spacer; the upper edge of the outer sealing piece is provided with a plurality of second hydrogen through holes so as to communicate with second hydrogen outlets of adjacent outer space rings; and a plurality of second oxygen through holes are formed to communicate with the second oxygen holes of the adjacent outer spacing rings.

3. An electrolysis chamber adapted for bottom and middle feed liquor according to claim 2 wherein the inner partition extends outwardly through the side partitions to form an outer partition.

4. An electrolysis chamber adapted for bottom and middle feed as claimed in claim 2,

the inner spacer ring comprises an upper spacer block and a lower spacer block;

the inner seal includes an inner upper seal and an inner lower seal.

5. An electrolytic cell, characterized in that an electrolytic chamber suitable for bottom and middle liquid feeding of any one of claims 1 to 4 is adopted;

a plurality of electrolysis chambers are mutually overlapped and combined;

the first liquid inlet holes of the lower electrolysis chambers form a first liquid inlet channel, the first oxygen outlets are communicated in a one-to-one correspondence mode to form a first oxygen output channel, and the first hydrogen outlets are communicated in a one-to-one correspondence mode to form a first hydrogen output channel;

the second liquid inlet holes of the upper electrolysis chambers form second liquid inlet channels, the second oxygen outlets are communicated one by one to form second oxygen output channels, and the second hydrogen outlets are communicated one by one to form second hydrogen output channels.

Images