CN212102131U - Electrolytic tank for treating waste sulfuric acid - Google Patents
Electrolytic tank for treating waste sulfuric acid Download PDFInfo
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- CN212102131U CN212102131U CN202020546303.4U CN202020546303U CN212102131U CN 212102131 U CN212102131 U CN 212102131U CN 202020546303 U CN202020546303 U CN 202020546303U CN 212102131 U CN212102131 U CN 212102131U
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Abstract
The utility model discloses an electrolytic cell for treating waste sulfuric acid, which comprises a main cell body (1) and a plurality of clapboards positioned in the main cell body, wherein the main cell body (1) is divided into a plurality of electrolytic chambers by the clapboards, the clapboards are divided into a high clapboard and a low clapboard according to the height, and are sequentially arranged according to the sequence of one low and one high and the other low and one high; the main tank body (1) is used for containing waste sulfuric acid solution to be treated, and each electrolytic chamber is provided with a cathode plate (6) and an anode plate (7) and used for providing electric energy to enable electrochemical reaction to occur in the electrolytic chamber so as to remove hydrogen peroxide in the waste sulfuric acid solution. The utility model discloses a to each subassembly structure of electrolysis trough and its setting mode etc. improve, realized the disturbance of electrolyte in the electrolysis trough through the combination at the inside baffle that sets up of electrolysis trough, effectively reduced the voltage difference, improved current efficiency, be particularly useful for handling the waste sulfuric acid solution (like piranha solution) etc. that contain hydrogen peroxide.
Description
Technical Field
The utility model belongs to the technical field of the processing of waste sulfuric acid, more specifically relates to an electrolysis trough for handling waste sulfuric acid.
Background
With the increasing demand for electronic products, the electronic industry in China is rapidly developing in recent years. Piranha solution (a mixture of concentrated sulfuric acid and hydrogen peroxide) is often used in the electronic processing industry for cleaning semiconductors, and is also used for pretreatment of silicon-based materials. The used piranha solution belongs to sulfuric acid waste acid hazardous waste, contains strong corrosiveness and is explosive because of hydrogen peroxide contained in the piranha solution, and the piranha solution needs to be treated and disposed of to remove impurities such as hydrogen peroxide in the piranha solution. The electrolysis method has less secondary pollution, and can remove hydrogen peroxide and trace metal impurities possibly contained in the hydrogen peroxide. But hydrogen and oxygen are generated during electrolysis.
SUMMERY OF THE UTILITY MODEL
To the above defect or the improvement demand of prior art, the utility model aims to provide an electrolysis trough for handling waste sulfuric acid through improving each subassembly structure of electrolysis trough and its mode of setting etc. and the baffle that sets up inside the electrolysis trough has realized the upper and lower flow of turning back of electrolyte in the electrolysis trough through the combination, has effectively reduced the voltage difference, has improved current efficiency. The combination of the separators forms a plurality of electrolysis chambers, thereby effectively improving the electrolysis efficiency. In addition, the vent hole is arranged on the upper part of the electrolytic cell, so that the electrolytic cell can be prevented from exploding due to gas generated in the electrolytic process.
In order to achieve the above object, according to one aspect of the present invention, there is provided an electrolytic cell for treating waste sulfuric acid, comprising a main cell body and a plurality of partition plates located in the main cell body, wherein a water inlet pipe is provided at the bottom of one end of the main cell body, and an overflow port is provided at the upper part of the other end of the main cell body; the main tank body is divided into a plurality of electrolysis chambers by the clapboards, the clapboards are divided into a high clapboard and a low clapboard according to the height, and the clapboards are sequentially arranged from one end where the water inlet pipe is located to the other end where the overflow port is located according to the sequence of one lower clapboard, one higher clapboard and one lower clapboard; the two adjacent partition boards with one lower part and one higher part are taken as a group, and then the main trough body comprises at least 2 groups of partition boards; the partition plates are in contact with the bottom surface of the main tank body, and the height of the high partition plate does not exceed the depth of the main tank body;
the main tank body is used for containing waste sulfuric acid solution to be treated, a negative plate and an anode plate are arranged in each electrolytic chamber and used for providing electric energy to enable the electrochemical reaction in the electrolytic chambers to remove hydrogen peroxide in the waste sulfuric acid solution, the waste sulfuric acid solution to be treated enters from the water inlet pipe, sequentially passes through the electrolytic treatment of each electrolytic chamber and then flows out from the overflow port;
and for any high partition plate, a through hole is also formed in the lower area of the high partition plate, so that the waste sulfuric acid solution to be treated can be conveniently conveyed.
As a further preference of the present invention, the top of the main tank body is further provided with an electrode bayonet assembly, which can facilitate the placement of the cathode plate and the anode plate.
As a further preferred aspect of the present invention, the total number of the partition plates in the main tank is 4.
As a further preferred aspect of the present invention, the partition plates in the main tank are placed at equal intervals.
As a further preferred aspect of the present invention, the partition plates in the main tank are provided one at every 42 cm.
As a further preference of the utility model, the electrolytic cell further comprises a cover for cooperating with the main cell body, wherein the cover is used for keeping the main cell body relatively sealed; and the middle part of the groove cover is provided with an exhaust hole, so that the main groove body can exchange gas with the outside.
As a further preference of the present invention, the height of the low partition plate is lower than the upper edge of the main tank body by 50cm, and the height of the high partition plate is equal to the upper edge of the main tank body.
As a further preferred aspect of the present invention, the anode plate is a lead dioxide electrode.
As a further preference of the present invention, the cathode plate is a graphite electrode.
Through the above technical scheme of the utility model conception, compare with prior art, owing to set up a plurality of baffles in the electrolysis trough is inside, the combination of these baffles has made the electrolysis trough in form a plurality of electrolysis rooms, effectively improves electrolysis efficiency. Taking four partitions, one lower, one higher, one lower and one higher as an example, the combination of the four partitions can make the electrolyte in the electrolytic cell generate disturbance, so that the concentration distribution of the electrolyte in each electrolytic chamber is uniform.
The treatment device in the utility model is particularly suitable for treating waste sulfuric acid solution (such as piranha solution) containing hydrogen peroxide. In addition, because hydrogen and oxygen can be generated in the operation process of the electrolytic cell, the exhaust hole is arranged in the middle of the cover plate of the electrolytic cell, so that the explosion danger of the electrolytic cell is prevented.
Drawings
FIG. 1 is a perspective view of an electrolytic cell according to the present invention.
FIG. 2 is a sectional view of the electrolytic cell of the present invention.
Fig. 3 is a schematic perspective view of the main tank body and the electrode bayonet assembly thereon.
The meanings of the reference symbols in the figures are as follows: 1 is main cell body, 2 is first baffle, 3 is the second baffle, 4 is the third baffle, 5 is the fourth baffle, 6 is the negative plate, 7 is the anode plate, 8 is the inlet tube, 9 is the overflow mouth, 10 is the electrode bayonet socket subassembly, 11 is the capping, 12 is the exhaust hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
Example 1
As shown in figures 1 and 2, the electrolytic cell for treating waste sulfuric acid in the utility model comprises a main cell body 1, a cell cover 11, a partition board and an electrolytic chamber formed by the partition board, wherein the anode plate is a lead dioxide electrode. Taking fig. 2 as an example, four separators (i.e., a first separator 2, a second separator 3, a third separator 4, and a fourth separator 5) divide the electrolytic cell into 5 electrolytic chambers, and an anode plate and a cathode plate are placed in each of the electrolytic chambers formed by the separators.
The lead dioxide electrode can effectively remove hydrogen peroxide in the waste sulfuric acid, and meanwhile, electrochemical reaction is carried out after electrification, so that the oxidized lead dioxide electrode on the surface layer is reduced, and the service life of the lead dioxide electrode is ensured.
In the embodiment, the four partition plates are arranged in the electrolytic cell at equal intervals, so that the disturbance phenomenon of the electrolyte in the electrolytic cell is realized, the voltage difference is effectively reduced, and the current efficiency is improved. For example, partition plates are arranged in the tank body at intervals of 42cm and the like. The upper edges of two sides of each electrolytic chamber are provided with a plurality of electrode bayonets. The electrode bayonets are provided by an electrode bayonet assembly comprising a peripheral baffle of a certain height (the height of the peripheral baffle may be 100cm), on both sides of which a number of electrode bayonets of a depth of 50cm are provided.
In the embodiment, the height of the first partition board 2 and the height of the third partition board 4 in the partition boards are lower than the height of the electrolytic tank main body, the height of the second partition board 3 and the height of the fourth partition board 5 are the same as that of the upper edge of the main tank body 1, the lower areas of the second partition board 3 and the fourth partition board 5 are also provided with through holes, electrolyte can pass through the upper parts of the low partition boards and the lower parts of the high partition boards, the electrolyte is combined to form a plurality of electrolytic chambers, and the reaction efficiency is effectively increased. For example, the height of the first partition board and the height of the third partition board are both 50cm lower than the upper edge of the electrolytic tank, the height of the second partition board and the height of the fourth partition board are both equal to the height of the upper edge of the main tank body, and through holes are formed in the lower areas of the second partition board and the fourth partition board, so that electrolyte can pass through the bottom of the electrolytic tank and disturbance can be generated.
In this embodiment, an anode plate 6 and a cathode plate 7 are placed in every other electrolytic chamber, the anode is a lead dioxide electrode, and the cathode is a graphite electrode. The high and low separators are made of the same material and can be made of the existing PVC or PP materials.
In this embodiment, the electrode bayonet assembly 10 disposed at the upper end of the electrolytic chamber can not only fix the electrode, but also prevent the electrolyte in the electrolytic chamber from splashing and corroding external circuits (such as external conductive copper bars). The electrode bayonet component arranged on the upper part of the electrolytic cell is 100cm higher than the upper edge of the electrolytic cell main body, so that the electrode bayonet component not only can be used for placing a polar plate, but also can prevent waste sulfuric acid in the cell body from splashing and corroding the conductive copper bar.
In the embodiment, hydrogen and oxygen can be generated in the operation process, the exhaust hole 12 is formed in the middle of the electrolytic cell cover, and the ventilation pipeline is connected to effectively absorb generated gas so as to prevent explosion in the electrolytic cell.
The above embodiment only takes 4 partition plates as an example, and of course, the number of the partition plates may be more as long as the partition plates are arranged in the order of one lower to one higher, one lower to one higher. In addition, the utility model provides an electrolysis trough can also ally oneself with by a plurality of electrolysis troughs, for example, during the accessible inlet tube was gone into the electrolysis trough with the useless sulphuric acid pump in the waste material bucket, first electrolysis trough overflow mouth linked to each other with next electrolysis trough water inlet, made the electrolyte flow in the groove next electrolysis trough.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. An electrolytic cell for treating waste sulfuric acid is characterized by comprising a main cell body (1) and a plurality of partition plates positioned in the main cell body, wherein a water inlet pipe (8) is arranged at the bottom of one end of the main cell body (1), and an overflow port (9) is arranged at the upper part of the other end of the main cell body (1); the main tank body (1) is divided into a plurality of electrolysis chambers by the clapboards, the clapboards are divided into a high clapboard and a low clapboard according to the height, and the clapboards are sequentially arranged from one end where the water inlet pipe (8) is located to the other end where the overflow port (9) is located according to the sequence of one lower part, one higher part and one lower part; the two adjacent partition boards with one lower part and one higher part are taken as a group, and the main trough body (1) comprises at least 2 groups of partition boards; the partition plates are in contact with the bottom surface of the main tank body (1), and the height of the high partition plate does not exceed the depth of the main tank body (1);
the main tank body (1) is used for containing waste sulfuric acid solution to be treated, a cathode plate (6) and an anode plate (7) are arranged in each electrolytic chamber and used for providing electric energy to enable electrochemical reaction to occur in the electrolytic chambers so as to remove hydrogen peroxide in the waste sulfuric acid solution, the waste sulfuric acid solution to be treated enters from the water inlet pipe (8) and flows out from the overflow port (9) after being subjected to electrolytic treatment in each electrolytic chamber in sequence;
and for any high partition plate, a through hole is also formed in the lower area of the high partition plate, so that the waste sulfuric acid solution to be treated can be conveniently conveyed.
2. The electrolytic cell for the treatment of spent sulfuric acid according to claim 1, characterized in that an electrode bayonet assembly is further provided above the main tank body (1), said electrode bayonet assembly being capable of facilitating the placement of the cathode plate (6) and the anode plate (7).
3. The electrolytic cell for treating spent sulfuric acid according to claim 1, wherein the total number of the separators in the main cell body is 4.
4. The electrolytic cell for processing waste sulfuric acid according to claim 1, wherein the partitions in the main cell body are disposed at equal intervals.
5. The electrolytic cell for processing waste sulfuric acid according to claim 1, wherein the partition plates in the main cell body are arranged one at every 42 cm.
6. An electrolytic cell for treating waste sulfuric acid as defined in claim 1, further comprising a cover (11) for cooperating with the main cell body (1), the cover (11) being adapted to maintain the main cell body (1) relatively sealed; and the middle part of the groove cover (11) is provided with an exhaust hole (12) which can enable the main groove body (1) to exchange gas with the outside.
7. The electrolytic cell for treating waste sulfuric acid according to claim 1, wherein the height of the low partition is 50cm lower than the upper edge of the main tank body (1), and the height of the high partition is equal to the upper edge of the main tank body (1).
8. The electrolytic cell for treating spent sulfuric acid according to claim 1, wherein the anode plate (7) is a lead dioxide electrode.
9. The electrolytic cell for the treatment of spent sulfuric acid according to claim 1, characterized in that the cathode plate (6) is a graphite electrode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020546303.4U CN212102131U (en) | 2020-04-14 | 2020-04-14 | Electrolytic tank for treating waste sulfuric acid |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020546303.4U CN212102131U (en) | 2020-04-14 | 2020-04-14 | Electrolytic tank for treating waste sulfuric acid |
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| CN212102131U true CN212102131U (en) | 2020-12-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114182300A (en) * | 2021-12-24 | 2022-03-15 | 福建省福联集成电路有限公司 | Equipment for recovering gold by chemical electrolysis and using method thereof |
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2020
- 2020-04-14 CN CN202020546303.4U patent/CN212102131U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114182300A (en) * | 2021-12-24 | 2022-03-15 | 福建省福联集成电路有限公司 | Equipment for recovering gold by chemical electrolysis and using method thereof |
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