SU1000471A1 - Electrolyzer for producing oxyhydrogen gas from water and aqueous solutions - Google Patents

Description

This invention relates to electrolytic cells for producing detonating gas.

/ by electrolysis of water and can be used in the building materials industry, mining and other sectors of the national economy in gas detonation installations

(system and wide-range regeneration of filters for gas cleaning, in installations used for gas welding and soldering.

A known electrolyzer for producing a fiery gas from water and aqueous solutions, which comprises a housing, an electrolyte tank, a pressure cap, an electrode system, a vapor system, an electrode attachment device, and an electrolyte inlet pipe. sections, each of which consists of two metal tapes rolled up and separated by a dielectric in the form of a thread wound on one of the tapes in a spiral ij.

The specified electrolyzer has a high specific surface area of the electrodes and, accordingly, a high specific gas flow rate at

high efficiency. But such an electrode system does not have sufficient rigidity, which does not allow the use of an electrolyzer in gas detonation installations without gas cut-off fittings (flame arresters). In addition, such an electrode system is non-technical in manufacturing, as it requires the performance of relatively complex manual operations for fixing and winding filaments and electrodes. Practically, such an electrode system can be made of ribbons of small thickness (on the order of I mm), and therefore, the electrodes are not long at work on non-distilled water because of the loss of rigidity of the electrode system, even with slight corrosion of the electrodes.

20

Also known is an electrolyzer for the production of detonating gas from Veda and aqueous solutions, including a housing, an airtight lid, a housing placed 25, electrodes made flat and placed one parallel to the center, a gooelectric device L2 J

The disadvantages of the known electrolyzer are its unreliability in

Claims (1)

30 due to insufficient rigidity of the electrode system and the difficulty of installation. The purpose of the invention is to increase the reliability of the operation of the cell and simplify installation. This goal is achieved by the fact that in a well-known electrolyzer, including a housing, an airtight lid, placed on the side, electrodes made flat and placed one parallel to another, a gas exhaust device, the electrodes are square in shape, replaced one with respect to the other by 45 between each of the studs mounted on the roof and between the electrodes on the studs there are installed distance washers made of conductive sparking material. Figure 1 shows the proposed electrolyzer; figure 2 - section aa in figure 1. The electrolyzer comprises a housing 1 made of a material resistant to alkaline solutions, an airtight cover 2 connected to the housing 1 by pins 3 through sealing gaskets 4, an electrode system consisting of two groups of flat alternating electrodes 5 having a square shape and one offset from other at 45 °. The electrodes 5 are fixed parallel to the cover 2 by means of studs 6 and 7 with spacer washers 8 located in the corners of the electrodes 5, and one of the groups of electrodes 5 is electrically isolated from the cover 2 by means of insulating tabs 9 and bushings 10. Under the electrode system there is a sump 11 with a locking device 12 and a drain nipple 13. A gas outlet device 14 is located above the housing 1 and connected to the upper and lower parts of the housing 1 respectively by nozzles 15 and 16. Water is supplied to the electrolyzer housing 1 from the tank 17 through the nozzle 18. The detonating gas is removed from the electrolyzer through the outlet 19. The electrolyzer operates as follows. The studs 7 are supplied with a constant electric current with a voltage of about 2.5 V per section. The electrolyte, located in the interelectrode space of the cell 1 of the electrolyzer, under the action of electric current, decomposes into hydrogen and oxygen, which rise in the form of small gas bubbles, which carries the electrolyte saturated with gas, i.e. an internal electrolyte circulation circuit is formed (indicated by arrows). The intensive circulation of the electrolyte contributes to the rapid removal of gas from the interelectrode space, a decrease in the gas filling of the electrolyte and. therefore, increase the efficiency of the electrolyzer. Gas bubbles are collected in the upper part of the housing 1, where they are enlarged, and through the pipe 15 are fed into the gas outlet device 14 for the final separation of gas from the electrolyte. Through the outlet nozzle 19, the gas is removed from the electrolytic cell, and the electrolyte through the nozzle 16 is returned back to the electrolytic cell 1 (an external electrolyte circulation circuit is formed). Water is supplied to the same pipe 16 and; from the tank 17 through pipe 18. The solid corrosion products of electrodes 5 and sediment from non-distilled water are entrained by the flow of the internal electrolyte circulation circuit, and since the electrode system is located symmetrically with respect to the walls of case 1, the corrosion products accumulate under the electrode system and enter the settling tank 11, from where they are periodically removed through the locking device 12 and the drain nipple 13. Due to the fact that corrosion products are continuously removed from the interelectrode space, the electrolyzer can work normally for a long time on non-distilled water until the electrodes 5 are almost completely dissolved. The advantages of the proposed electrolyzer are that it is unpretentious in operation, it can work for a long time on non-distilled water, it is easy to manufacture and repair, the electrodes have a simple shape and are easily replaced during repairs. The proposed electrolyzer has a rigid construction of the electrode system, which allows it to be operated in gas detonation installations without flame arresters. Claims of the Invention Electrolyzer for producing detonating gas from water and aqueous solutions, comprising a housing, an airtight lid positioned on the side, electrodes made flat and placed one parallel to another, a flue gas device, characterized in that, in order to increase the reliability of the electrolyzer and simplify installation, the electrodes are square, offset one from the other. 45, interconnected by studs mounted on the cover, and mounted between the electrodes on the studs