CN2332734Y

CN2332734Y - Solid polymer electrolyte electrolyzing equipment

Info

Publication number: CN2332734Y
Application number: CN 98221451
Authority: CN
Inventors: 耿庆平
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-06-10
Filing date: 1998-06-10
Publication date: 1999-08-11
Anticipated expiration: 2008-06-10

Abstract

The utility model belongs to an electrolyzing device using solid polymer elecrolyte (an ion exchanging membrane) as an ion conductor inside an electrolytic tank to electrolyzing pure water. The utility model is characterized in that each anode chamber (9) and each cathode chamber (11) of the electrolytic tank (3) are concave tank body structures, the concave tank bodies of the two chambers can be exchanged with each other so that the utility model has convenient processing and assembling, the integral body of the electrolytic tank has good pressure resisting and sealing performances, water smoothly flows in each chamber, so the electrolytic efficiency is raised.

Description

Solid polymer electrolyte electrolysis apparatus

The utility model relates to an electrolysis device, in particular to a type of electrolysis device which takes solid polymer electrolyte (ion exchange membrane) as an ion conductor in an electrolytic cell to carry out pure water electrolysis.

According to the patent product with the patent number of 94225682.4 developed by Shandong province chemical research institute in China, although the multi-cell electrolytic cell overcomes the defect of low gas production of a single-cell electrolytic cell, the multi-cell electrolytic cell has a plurality of defects, because all parts of the electrolytic cell are in flat platestructures, the sealing position is increased, the sealing pressure resistance is difficult to ensure, along with the increase of the number of assembled single-cell cells in the electrolytic cell, the defects are more obvious, so that more unit cells are difficult to assemble, and the gas production and the application range are limited; in addition, the contact part of the inner edge of the anode (or cathode) separation frame of each unit electrolytic cell and the conductive porous metal material filled in the anode (or cathode) separation frame is easy to generate electrochemical corrosion, especially in the cavity of the anode frame, because the anode frame is filled with the mixed medium consisting of water and oxygen, the electrochemical corrosion is easy to generate, and corroded substances are easy to deposit on the surface and micropores of the solid polymer electrolyte, so that the activity of a catalytic electrode is reduced, the electrolytic efficiency is reduced, even the solid polymer electrolyte is completely damaged, and the electrolytic reaction is stopped. If the partition frame is changed into an organic material (such as a silica gel frame) with stable electrical performance and temperature resistance, although the electrochemical corrosion phenomenon can be overcome, the electrolytic cell is easy to deform when being assembled and fastened, the appearance edge is difficult to be tidy and attractive, and the defect difficult to overcome is that the cavity of the polar chamber is reduced, the water flow channel is deformed and reduced, and the electrolyzed water is difficult to smoothly pass through the polar chamber, so that the solid polymer electrolyte is easy to be locally overheated, the electrolytic efficiency is reduced, and serious people burn through the solid polymer electrolyte to damage the electrolytic cell.

In view of the problems existing in the prior art, the utility model aims to provide an electrolytic cell with a groove structure in the anode and cathode chambers, and the groove main body of the two polar chambers can be exchanged for use, so that the electrolytic cell is very convenient to process and assemble, has good sealing pressure resistance, and ensures smooth water flow in each polar chamber and high electrolytic efficiency of the solid polymer electrolyte electrolytic equipment.

The technical features of the technical solution of the present invention are clearly and completely explained below: the utility model discloses constitute a solid polymer electrolyte electrolysis equipment by above-mentioned parts such as power, basin, electrolysis trough, deareator, desicator, its characterized in that electrolysis trough's anode chamber and cathode chamber are the groove body structure.

The solid polymer electrolyte electrolytic apparatus described above is characterized in that three to five non-bolt through holes are provided on the ring column of the groove body of the anode chamber of the electrolytic cell.

The above-mentioned solid polymer electrolyte electrolytic apparatus is characterized in that three to four non-bolt through holes are provided on the ring column of the groove body of the cathode chamber of the electrolytic cell.

Compared with the prior art, the utility model beneficial effect who has is that the anode chamber and the cathode chamber of the key part electrolysis trough of electrolysis equipment are recess body structure, and it is poor to have overcome each part of electrolysis trough and be the leakproofness that flat structure caused, assemble numerous cable, yielding, perishable many shortcomings, make the electrolysis trough leakproofness good, and compressive strength is high, and the extremely indoor rivers of electrolysis trough are unblocked, and electrolysis efficiency is high to the recess main part of positive, cathodechamber can exchange the use, and it is very convenient to make the processing equipment.

The utility model discloses there are six drawings, and each picture of it explains and is:

FIG. 1 is a schematic view of the overall assembly of an electrolysis apparatus;

FIG. 2 is a schematic diagram of the cell structure;

FIG. 3 is a schematic top view of the anode chamber trough body;

FIG. 4 is a view in the direction A of FIG. 3;

FIG. 5 is a schematic top view of a cathode chamber trough body;

fig. 6 is a view from direction B of fig. 5.

The best mode of carrying out the invention is set forth in detail below:

the utility model comprises a power supply 1, a water tank 2, an electrolytic tank 3, an oxygen-water separator 4, a hydrogen-water separator 5, an oxygen drier 6, a hydrogen drier 7 and other parts. The water in the water tank 2 passes through the water pipe 8 and reaches each anode chamber 9 of the electrolytic cell 3 through the t-shaped hole 10 on the grooved ring column of the anode chamber 9 of the electrolytic cell 3 and the through hole 12 on the grooved ring column of the cathode chamber 11. The positive and negative poles of the power supply 1 are connected to the two poles of the electrolytic bath 3, and direct current is supplied to the electrolytic bath 3. The water entering the anode chamber 9 passes through a conductive porous metal material (e.g., porous titanium) 13 to reach a catalytic anode of a solid polymer electrolyte 14 to undergo a decomposition reaction: the generated negative oxygen ions immediately emit electrons on the anode to form oxygen, and the oxygen and water are discharged from each anode chamber 9 and the electrolytic tank 3 along with the water in the anode chamber 9 from the T-shaped hole 15 on the groove ring column of the anode chamber 9 and the oxygen and water channel hole 16 on the groove ring column of the cathode chamber 11 to enter the oxygen-water separator 4, and the oxygen containing a small amount of water enters the oxygen dryer 6 from the top of the oxygen-water separator 4 and is dried to obtain high-purity oxygen. The condensed water at the bottom of the oxygen-water separator 4 returns to the water tank 3 to circulateThe ring is used. The hydrogen ions generated by the anode decomposition of water pass through the solid polymer electrolyte 14 in the form of hydrated ions under the action of electric field force to reach the catalytic cathode to receive electricityHydrogen is produced. The newly generated hydrogen and the water carried to the cathode chamber 11 by hydrogen ions pass through a conductive porous metal elastic material (such as a nickel net) 17 filled in the groove body of the cathode chamber 11, are discharged from each cathode chamber 11 and the electrolytic tank 3 from a T-shaped hole 18 on the groove ring column of the cathode chamber 11 and a hydrogen and water channel hole 19 on the groove ring column of the anode chamber 9, enter the hydrogen water separator 5, are condensed to contain a small amount of water, enter the hydrogen gas dryer 7 from the top of the hydrogen water separator 5, and are dried to obtain high-purity hydrogen gas. The condensed water at the bottom of the hydrogen water separator 5 returns to the water tank 2 for recycling. The anode chamber 9 of the electrolytic cell 3 and the conductive porous metal material 13 filled therein constitute a unit cell with the solid polymer electrolyte 14 having both sides closely attached to the cathode and anode catalytic electrodes and the cathode chamber 11 having the conductive porous metal elastic material 17 filled therein, and the unit cells are assembled in this order, and the respective members and the edges of the holes are sealed with sealing films, and the bolt holes 20 symmetrical to each other on the respective members are fastened to the whole electrolytic cell 3 with bolts 21 and nuts 22.

The anode chamber 9 and the cathode chamber 11 of the electrolytic cell 3 of the above-mentioned solid polymer electrolyte electrolytic apparatus are of a groove body structure, the groove body of the both-pole chambers is preferably of the same size so as to be used interchangeably, and the outer shape may be either circular or square, and is preferably circular in view of convenience in processing and assembly and pressure-proof sealing.

Three to five non-bolt through holes are arranged on the ring column of the groove body of the anode chamber 9 of the electrolytic cell 3 of the solid polymer electrolyte electrolysis device, wherein two T-

shaped holes

10 and 15 are an inlet and an oxygen and water outlet for electrolysis water of the anode chamber 9, a hole 19 is a hydrogen and water passage, and the other two holes 23 (which can be not opened) are reserved for replacing the anode chamber 9 and the cathode chamber 11.

Three to four non-bolt through holes are arranged on the ring column of the concave groove body of the cathode chamber 11 of the electrolytic cell 3 of the solid polymer electrolyte electrolysis device, wherein one T-shaped hole 18 is a hydrogen and water outlet, two holes 12 and 16 are passages for electrolyzed water and oxygen and water, and the other hole 24 (which can be not opened) is reserved when the anode chamber 9 and the cathode chamber 11 are used interchangeably. The anode chamber 9 and the cathode chamber 11 of the electrolytic cell 3 of the solid polymer electrolyte electrolysis device of the utility model are both groove structures, and the groove main bodies of the two polar chambers can be exchanged for use in emergency, so that the processing and the assembly are very convenient. Because the sealing points are reduced, the whole pressure-resistant sealing performance of the electrolytic cell 3 is correspondingly improved, because the polar plates and the frames of each polar chamber are connected into a groove, the potential difference is not easy to form when the electrolytic current is changed, and the electrochemical corrosion phenomenon is also reduced, in addition, because the groove bodies of the cathode chamber and the anode chamber are not easy to deform, the structure is stable, the water flow in the electrolytic cell 3 is smooth, and the electrolytic efficiency is improved.

Claims

1. A solid polymer electrolyte electrolytic equipment composed of power supply, water tank, electrolytic bath, gas-water separator and dryer, characterized in that: each anode chamber (9) and each cathode chamber (11) of the electrolytic cell (3) are of a groove body structure.

2. A solid polymer electrolyte electrolytic apparatus according to claim 1, characterized in that three to five non-bolt through holes are provided on the groove body ring column of each anode chamber (9) of the electrolytic cell (3).

3. A solid polymer electrolyte electrolytic apparatus according to claim 1, characterized in that three to four non-bolt through holes are provided in the groove body ring column of each cathode chamber (11) of the electrolytic bath (3).