SU709716A1 - Electrolyzer for synthesis of inorganic compounds - Google Patents

Description

I

The invention relates to the technology of electrochemical production and can be used in the amvic industry of the range of electrosynthesis of inorganic substances.

A filter press cell is known for producing inorganic substances by electrolyzing aqueous solutions without isolating solid products on the electrodes, for example, sodium chloride. The electrolyzer consists of frames with bipolar electrodes installed in them, it contains conductive diaphragms - partitions that divide the anodic and cathodic cells. The frames provide cavities that form during assembly of the electrolyzer collectors for its supply and collectors located along the entire length of the electrolyzer for removal of electrolysis products and separation and removal of gases C1.

The undersupply of the specified electrolyzer is $ 1 low current output.

An electrolyzer for the synthesis of inorganic compounds is also known; containing-

housing with electrolysis cathode and anode cells made in the form of diaphragm boxes, with cathodes and anodes placed in them, a collection of cathode products and a collection of anode products, connected respectively with electrolysis cathode and anode 5 cells.

The disadvantages of this electrolyzer are the low current consumption and low concentration of the products obtained.

Claims (2)

In order to eliminate these drawbacks there is provided an electrolytic cell for the synthesis of inorganic compounds, comprising a body with electrolysis cathode and anode cells vshspnennBgin as dchafragmet1yh boxes, with placed therein cathodes and the anodes, a collection of cathode products and collection of the anode product, connected respectively to electrolysis the cathode and anode cells In fact, each collection is equipped with rear-aisles, which divide it into sections interconnected, in the proposed electrolyzer, electrode cells of one Some of the pipes are connected by two pipes, upper and lower, to the manifold, forming circulation sections. The section collectors are interconnected to form a collection. . The solution obtained in the extreme section flows to its collector in the collector of the next section, etc., and passes through all sections of the electrolyzer during the electrolysis process. As a result, a stepwise increase in the concentration of the substance obtained occurs from section to section. The solution with the highest concentration of the electrolysis product is drained from the collector of the last section. FIG. 1 shows a top view of the cell; in fig. 2 - the same, side view (in section). Alternating cathode and anodic ki 2 are installed in the electrolyzer housing 1 in the form of diaphragm boxes with cathodes 3 and anodes 4 placed in them, respectively. The cells are connected to product collections consisting of sec- onds 5, interconnected by nozzles 6. Example of operation electrolyzer at conversion of sodium monochromator. HenpepiSBHO electrolyzer is fed with a solution of sodium monochromate with a center in terms of chromic anhydride 170 g / l into the middle space. Due to the level difference and the electromotive transfer, the monochromate ions transfer the thermo-packed worm by boiling the per-vortex diaphragm to the anode space and combine with the hydrogen cations, which are directly electrolytically sodium, into sodium chromate. Under the action of electromyography through the cation-exchange membrane of sodium ion B cathode cells and electrostatic reduction of water in the catholyte alkali accumulates. The electrolysis is carried out at a current density of 10 A / dm and a temperature. At the outlet from the anode collector, the concentration of electrolyte in chromic anhydride increases to 275 g / l. At the outlet of the cathode collector, due to the stepwise concentration in the section, the alkali concentration increases to 20 g / l. The current efficiency of the products in the proposed electrolyzer is 65%. In the electrolyzer without separation of collections into sections, it is equal to 51-53%; those. 1412% less. The proposed electrolyzer allows an increase in the current efficiency and the concentration of the products obtained. one. . An electrolyzer for the synthesis of inorganic compounds, comprising a housing with electrolysis cathode and anode cells made in the form of diaphragm boxes, with cathodes n anodes placed in them, a collection of cathode products and a collection of anode products, respectively with electrolytic cathode HbSMH and anode cells, o It is worth noting that, in order to increase the current efficiency and the concentration of the products obtained, each collection is equipped with partitions dividing it into sections that are interconnected . Sources of information taken into account in the examination 1. French patent number 2169710, cn, 01 to 3/00, published. 14.09.73. 2. The patent of Great Britain No. 1362127, class C, 7B, published. 31.O7.74 (prototype). eleven ,. ". U rlH 7 77 / ta.i X ./ u / PG JUUUUU , U / g.2