SU420331A1 - ELECTROLIZER WITH CIRCULATED ELECTROLYTE - Google Patents

Description

one

The invention relates to the design of electrolysis processes and can be used in the processes of electrochemical reduction and oxidation, for example in the process of liquid-phase catalytic hydrogenation.

A known electrolytic cell with a directed electrolyte circulation, containing cathode and anode electrode chambers, separated by a diaphragm, and flat electrodes. Circulation of electrolyte is provided by gassing at the electrodes.

The purpose of the invention is to ensure the intensification of the processes and the possibility of obtaining in the same apparatus various target products at a high current output.

For this purpose, the proposed electrolytic cell with the directed circulation of the electrolyte is equipped with a magnet arranged in such a way that the created magnetic field is directed perpendicularly to the electric field of the electrolyzer. A diaphragm is drawn from an ion exchange material, and the electrolyzer is provided with a circulation pipe for returning electrolyte to the electrolysis zone.

The circulation pipe may be located in the electrode chamber, for example, in the cathode tube, or outside the electrode chamber.

In addition, the circulation pipe is made of a material having catalytic properties.

FIG. 1 shows a cell, a cross-section; in fig. 2 is a section along A-A in FIG. one; in fig. 3 is a section along BB in FIG. one.

An electrolyzer made of a chemically resistant dielectric (PTFE, polyethylene, etc.) consists of two chambers 1 and 2, between which an ionite diaphragm 3 is clamped. H-cation membrane attached.

In order to carry out the process of hydrogenation and hydrogeiolysis, a metal circulation pipe 4 is located in the cathode chamber 1, having a cross section close to a rectangular one.

The metal from which the circulation pipe 4 is made, either possesses catalytic properties, or a substrate for the catalytic coating.

One of its faces pipe 4 is pressed to

contacts 5, which are built into the electrolyzer stack, located against the diaphragm 3. The circulation pipe 4 can be removed from the electrolyzer to flush n the electrochemical or chemical regeneration of its surface. In the chamber 2 against the diaphragm 3 there is a flat anode 6, pressed against the contacts 7.

In the upper and lower parts of the chambers there are nozzles 8 through which the internal cavities of the electrolyzer are connected to the supply and discharge system of the reaction products.

The electrolyzer is located between the poles of the electromagnet 9 so that the north pole is on the observer side, and the south pole is facing the observer and is located behind the plane of the drawing.

The cell body 10 of the cell is fitted with bolts passing through the holes a, and ferromagnetic liners 11 are built into it to extend the magnetic core.

As a result of the interaction of the magnetic field with the electric field of the electrolyzer during the electrolysis process, the electrolyte will circulate in the space between the diaphragm 3 and the outer wall of the circulation pipe 4 (up) and inside the pipe (down). The pipe can be removed from the electrolyzer and communicate with it through the pipes 8, i.e.

camera 1 may have a device similar to camera 2.

The electrolyzer was tested during the process of hydrogenation and hydrogenolysis of glucose. Hydrogenation was carried out at atmospheric pressure in a weak aqueous solution of KOH (pH 8-9). Sorbitol was obtained as the final product, and when the temperature increased only by 5-10 ° C, sorbitol and xylitol were obtained. The introduction of a catalyst into the electrolyzer significantly intensifies the process of hydrogenolysis at least until the appearance of glycerol. The catalyst can be introduced in the form of noponjKa, as well as in the form of a colloid or emulsion. The results of the experiments are given in the table.

Subject invention

Claims (4)

1. Electrolytic cell with electrolyte circulation, containing cathode and anode electrode chambers separated by a diaphragm, and flat electrodes, characterized in that, in order to intensify the processes and the possibility of obtaining various products with high output in one apparatus, that the generated magnetic field is perpendicular to the electric soil of the electrolyzer, the diaphragm is made of an ion exchange material, and the electrolyzer is provided with a circulation pipe for returning electrolyte to the electrolysis zone. 2. The electrolyzer according to claim 1, from the camera and with the fact that the circulation pipe is located in the electrode chamber, for example, in the cathode chamber. 3. Electrolyzer by n. 1, characterized in that the circulation pipe is located outside the electrode tube. 4. Electrolyzer in PP. 1 and 2, characterized in that the circulation pipe is made of a material having catalytic properties. Fig Aa .Z