CN218291137U

CN218291137U - Circulating electrolysis system

Info

Publication number: CN218291137U
Application number: CN202222196792.7U
Authority: CN
Inventors: 谭伟华; 陈猛; 陈敏; 戴九松; 郑军妹; 张旭东
Original assignee: Ningbo Fotile Kitchen Ware Co Ltd
Current assignee: Ningbo Fotile Kitchen Ware Co Ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2023-01-13
Anticipated expiration: 2032-08-19

Abstract

The utility model discloses a circulation electrolysis system, its characterized in that: an electrolytic cell having a cathode chamber and an anode chamber inside; the alkaline water tank is provided with a water outlet end and a water return end, the water outlet end of the alkaline water tank is communicated with the water inlet end of the cathode chamber through a first water outlet pipe, and the water outlet end of the cathode chamber is communicated with the water return end of the alkaline water tank through a first water return pipe; and the acid water tank is provided with a water outlet end and a water return end, the water outlet end of the acid water tank is communicated with the water inlet end of the anode chamber through a second water outlet pipe, and the water outlet end of the anode chamber is communicated with the water return end of the acid water tank through a second water return pipe. Compared with the prior art, the utility model discloses a circulation electrolysis system can conveniently adjust out water pH value, improve the electrolyte utilization ratio.

Description

Circulating electrolysis system

Technical Field

The utility model relates to the technical field of electrolysis devices, in particular to a circulating electrolysis system.

Background

The electrolytic cell consists of a cell body, an anode and a cathode, and an anode chamber and a cathode chamber are mostly separated by an ion exchange membrane (also called a diaphragm). The electrolytic bath is divided into three types, namely an aqueous solution electrolytic bath, a molten salt electrolytic bath and a non-aqueous solution electrolytic bath according to the difference of the electrolyte. When direct current passes through the electrolytic cell, an oxidation reaction occurs at the interface between the anode and the solution, and a reduction reaction occurs at the interface between the cathode and the solution, to produce electrolyzed water.

For example, in chinese patent application No. CN201810264395.4 (publication No. CN 108609693A), a method for preparing acidic water and alkaline water comprises electrolyzing a salt solution to form cations and anions, moving the cations and anions to two electrodes of an electrolysis electrode, respectively, generating hydrogen ions and chlorine gas with strong activity from an anode, dissolving the chlorine gas in water to generate hypochlorous acid and a hydrochloric acid solution as acidic water, and generating hydroxyl ions and hydrogen gas from a cathode to form a sodium hydroxide solution as alkaline water.

In the above scheme, however, firstly, the solution in each reaction chamber passes through once, and the pH value of the effluent cannot be adjusted without changing external conditions such as flow rate, current and the like; secondly, the solution in the reaction chamber passes through once, so that the electrolyte loss is large and the utilization efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the first technical problem that is to provide a circulation electrolysis system that can conveniently adjust out water pH value to prior art's current situation.

The second technical problem to be solved by the utility model is to provide a circulating electrolysis system capable of improving the utilization rate of electrolyte.

The third technical problem to be solved by the utility model is to provide a circulating electrolysis system which can improve the electrolysis efficiency.

The utility model provides a technical scheme that above-mentioned first and second technical problem adopted is: a circulating electrolysis system, characterized by:

the electrolytic cell is internally provided with a cathode chamber and an anode chamber, and each cathode chamber and each anode chamber are provided with a water inlet end and a water outlet end;

the alkaline water tank is provided with a water outlet end and a water return end, the water outlet end of the alkaline water tank is communicated with the water inlet end of the cathode chamber through a first water outlet pipe, and the water outlet end of the cathode chamber is communicated with the water return end of the alkaline water tank through a first water return pipe; and

and the acid water tank is provided with a water outlet end and a water return end, the water outlet end of the acid water tank is communicated with the water inlet end of the anode chamber through a second water outlet pipe, and the water outlet end of the anode chamber is communicated with the water return end of the acid water tank through a second water return pipe.

In order to realize the preparation of acidic water and alkaline water, the electrolytic bath comprises

A trough body;

the diaphragm is arranged in the tank body and divides the inner cavity of the tank body into the cathode chamber and the anode chamber;

the cathode sheet is arranged in the cathode chamber; and

and the anode sheet is arranged in the anode chamber.

In order to further solve the third technical problem, the following solutions are provided:

the first scheme is as follows: the number of the electrolytic tanks is at least two, and the electrolytic tanks are connected in series. The tandem structure can improve the utilization efficiency of electrolyte and electric energy.

The second scheme is as follows: the number of the electrolytic tanks is at least two, and the electrolytic tanks are connected in parallel. The parallel structure can improve the electrolysis flow.

The third scheme is as follows: the quantity of diaphragm is two to will the inner chamber of cell body is separated and is located the centre the anode chamber and be located two of both sides the cathode chamber. The design can also be understood as that two electrolytic cells are connected in parallel and share the same anode chamber, so that the additional arrangement of an anode sheet can be avoided, and one anode chamber and a corresponding circuit, a water path and the like can be omitted.

In order to convey the water flow in the alkaline water tank to the cathode chamber, a first conveying pump for conveying the water flow from the alkaline water tank to the cathode chamber is mounted on the first water outlet pipe.

In order to convey the water flow in the acid water tank to the anode chamber, a second conveying pump for conveying the water flow from the acid water tank to the anode chamber is mounted on the second water outlet pipe.

In order to facilitate the replenishment of the electrolyte, the alkaline water tank and the acidic water tank each have an opening at the top.

In order to fully electrolyze the electrolyte, the water inlet end of each cathode chamber and anode chamber is positioned at the lower part of the electrolytic cell, and the water outlet end of each cathode chamber and anode chamber is positioned at the upper part of the electrolytic cell.

Compared with the prior art, the utility model has the advantages of:

(1) By arranging the circulating water path, the alkaline water and the acidic water generated by the electrolytic cell respectively flow back to the alkaline water tank and the acidic water tank, so that the retention time of the acidic water and the alkaline water in respective electrode chambers can be prolonged, the reaction efficiency and the ion migration rate are improved, the utilization rate of electrolyte is improved, and under the premise of not changing external conditions such as flow, current and the like, the preparation of the acidic water and the alkaline water with different concentrations can be realized by changing the circulating times, so that the pH value of the effluent is adjusted;

(2) By arranging a plurality of electrolytic cells in series or in parallel, the electrolytic efficiency can be improved.

Drawings

FIG. 1 is a schematic perspective view of a circulating electrolysis system of example 1 of the present invention;

FIG. 2 is a schematic diagram of the configuration of the circulating electrolysis system of FIG. 1;

FIG. 3 is a schematic perspective view of a circulating electrolysis system of example 2 of the present invention;

FIG. 4 is a schematic diagram of the structure of the circulating electrolysis system in FIG. 3.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

Example 1:

as shown in FIGS. 1 and 2, the circulating electrolysis system of the present invention is a first preferred embodiment. The circulating electrolysis system comprises an electrolytic bath 1, an alkaline water tank 2 and an acidic water tank 3.

The electrolytic cell 1 comprises a cell body 11, a diaphragm 12, a cathode sheet 13 and an anode sheet 14. Specifically, the diaphragm 12 is a cation exchange membrane, the number of which is one, and the diaphragm is vertically arranged in the tank body 11, so as to divide the inner cavity of the tank body 11 into a cathode chamber 111 on the left side and an anode chamber 112 on the right side, each cathode chamber 111 and anode chamber 112 has a water inlet end and a water outlet end, and the water inlet end and the water outlet end are respectively located at the lower part and the upper part of the tank body 11; the cathode sheet 13 is provided in the cathode chamber 111; anode sheet 14 is disposed within anode chamber 112.

The top of the alkaline water tank 2 is provided with an opening, the lower part and the upper part of the alkaline water tank 2 are respectively provided with a water outlet end and a water return end, the water outlet end of the alkaline water tank 2 is communicated with the water inlet end of the cathode chamber 111 through a first water outlet pipe 21, the water outlet end of the cathode chamber 111 is communicated with the water return end of the alkaline water tank 2 through a first water return pipe 22, and a first delivery pump 211 for delivering water flow from the alkaline water tank 2 to the cathode chamber 111 is installed on the first water outlet pipe 21.

The top of the acid water tank 3 has an opening, the lower part and the upper part of the acid water tank 3 respectively have a water outlet end and a water return end, the water outlet end of the acid water tank 3 is communicated with the water inlet end of the anode chamber 112 through a second water outlet pipe 31, the water outlet end of the anode chamber 112 is communicated with the water return end of the acid water tank 3 through a second water return pipe 32, and a second delivery pump 311 for delivering water flow from the acid water tank 3 to the anode chamber 112 is mounted on the second water outlet pipe 31.

In order to improve the electrolysis efficiency, at least two electrolysis baths 1 can be arranged, and the electrolysis baths 1 are connected in series or in parallel. In this embodiment, the number of the electrolytic cells 1 is two, and the two electrolytic cells are connected in series, the water outlet end of the cathode chamber 111 of the previous electrolytic cell 1 is connected to the water inlet end of the cathode chamber 111 of the next electrolytic cell 1 through a pipeline, and the water outlet end of the anode chamber 112 of the previous electrolytic cell 1 is connected to the water inlet end of the anode chamber 112 of the next electrolytic cell 1 through a pipeline.

Example 2:

as shown in FIGS. 3 and 4, a second preferred embodiment of the circulating electrolysis system of the present invention is described. The difference from example 1 is that:

in this embodiment, the number of the diaphragms 12 is two, and the diaphragms are arranged side by side, and the inner cavity of the tank body 11 is divided into an anode chamber 112 located in the middle and two cathode chambers 111 located on the left and right sides. Such a design can also be understood as two electrolysis cells 1 in example 1 being connected in parallel and sharing the same anode chamber 112. This avoids the need to provide an additional anode plate 14 and one less anode chamber 112 and associated electrical circuitry, water circuits, etc.

The working principle of the embodiment is as follows: the initial solution in the cathode chamber 111 is deionized water or pure water, sodium carbonate electrolyte is filled in the anode chamber 112 and the acid water tank 3, when direct current passes through the electrolytic cell 1, a reduction reaction occurs at the interface between the cathode sheet 13 and the solution, an oxidation reaction occurs at the interface between the anode sheet 14 and the solution, cations in the anode chamber 112 pass through the diaphragm 2 and migrate to the cathode chamber 111, so that alkaline water is generated in the cathode chamber 111, acid water is generated in the anode chamber 112, and the alkaline water and the acid water respectively flow back to the alkaline water tank 2 and the acid water tank 3, so that the retention time of the acid water and the alkaline water in the respective electrode chambers can be prolonged, the reaction efficiency and the ion migration rate are improved, the utilization rate of the electrolyte is improved, and under the premise of not changing external conditions such as flow, current and the like, the preparation of the acid water and the alkaline water with different concentrations can be realized by changing the circulation frequency, thereby realizing the adjustment of the pH value of effluent.

Claims

1. A circulating electrolysis system, characterized by:

the electrolytic cell (1) is internally provided with a cathode chamber (111) and an anode chamber (112), and each cathode chamber (111) and each anode chamber (112) are provided with a water inlet end and a water outlet end;

the alkaline water tank (2) is provided with a water outlet end and a water return end, the water outlet end of the alkaline water tank (2) is communicated with the water inlet end of the cathode chamber (111) through a first water outlet pipe (21), and the water outlet end of the cathode chamber (111) is communicated with the water return end of the alkaline water tank (2) through a first water return pipe (22); and

the acid water tank (3) is provided with a water outlet end and a water return end, the water outlet end of the acid water tank (3) is communicated with the water inlet end of the anode chamber (112) through a second water outlet pipe (31), and the water outlet end of the anode chamber (112) is communicated with the water return end of the acid water tank (3) through a second water return pipe (32).

2. The circulating electrolysis system of claim 1, wherein: the electrolytic tank (1) comprises

A tank body (11);

a diaphragm (12) which is arranged in the tank body (11) and divides the inner cavity of the tank body (11) into a cathode chamber (111) and an anode chamber (112);

a cathode sheet (13) provided in the cathode chamber (111); and

and the anode sheet (14) is arranged in the anode chamber (112).

3. The circulating electrolysis system of claim 2, wherein: the number of the electrolytic tanks (1) is at least two, and the electrolytic tanks are connected in series.

4. The circulating electrolysis system of claim 2, wherein: the number of the electrolytic tanks (1) is at least two, and the electrolytic tanks are connected in parallel.

5. The circulating electrolysis system of claim 2, wherein: the number of the diaphragm (12) is two, and the inner cavity of the tank body (11) is divided into the anode chamber (112) positioned in the middle and the two cathode chambers (111) positioned on two sides.

6. The circulating electrolysis system according to any one of claims 1 to 5, wherein: and a first delivery pump (211) for delivering water flow from the alkaline water tank (2) to the cathode chamber (111) is arranged on the first water outlet pipe (21).

7. The circulating electrolysis system according to any one of claims 1 to 5, wherein: and a second delivery pump (311) for delivering water flow from the acid water tank (3) to the anode chamber (112) is arranged on the second water outlet pipe (31).

8. The circulating electrolysis system according to any one of claims 1 to 5, wherein: the tops of the alkaline water tank (2) and the acidic water tank (3) are provided with openings.

9. The circulating electrolysis system according to any one of claims 1 to 5, wherein: the water inlet end of each cathode chamber (111) and anode chamber (112) is positioned at the lower part of the electrolytic cell (1), and the water outlet end of each cathode chamber (111) and anode chamber (112) is positioned at the upper part of the electrolytic cell (1).