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Device and equipment for continuous production ofalkaline ferrate, especially of sodium ferrate

A technology for producing sodium ferrate and ferrate, which is applied in the direction of cells, electrolysis process, diaphragm, etc., can solve the problem of low ion migration and achieve the effect of low consumption level

Inactive Publication Date: 2015-05-06
INTECNA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, ferrate ions (FeO 4 2- ) ion migration should be faster than that of sodium ions (Na + ), hydroxide ions (OH-) and hydrogen ions (H + ) with a much lower ion mobility

Method used

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  • Device and equipment for continuous production ofalkaline ferrate, especially of sodium ferrate

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Embodiment Construction

[0027] The accompanying drawing is a schematic diagram of a plant 1 for the production of alkaline ferrate, specifically sodium ferrate.

[0028] The plant 1 comprises an electrolytic cell 2 , a circulation system 3 and a power supply and control system 4 .

[0029] The cell 2 comprises an outer shell structure 5 made of an alkali-resistant polymeric material, such as polypropylene, and defines an internal reaction tank 6 provided with electrodes 7 .

[0030] The reaction cell 6 is divided into at least one anode compartment 8 provided with at least one anode 7A and containing an anolyte (liquid solution), and at least one cathode compartment 9 provided with at least one cathode 7B and containing a catholyte (liquid solution); The cathode compartment 9 is separated from the anode compartment 8 by at least one conductive membrane 10 .

[0031] In the advantageous embodiment described, the reaction tank 6 is divided into three chambers which are open at the top and arranged lat...

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PUM

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Abstract

The invention provides a method for continuous production ofalkaline ferrate, especially of sodium ferrate. The method comprises the following steps: an electrolytic tank (2) is provided; the electrolytic tank has at least one anode chamber (8) including an iron anode (7A) and at least one cathode chamber (9) provided with at least one cathode (7B); at least one conduction membrane (10) is manufactured through sintered metal materials, especially steel materials to isolated the anode chamber (8) from the cathode chamber (9); an anolyte containing an alkali aqueous solution is made to continuously cycle in the anode chamber (8), and a catholyte is supplied in the cathode chamber (9); thus a current in the tank (2) is made to cycle between the iron anode (7A) and the cathode chamber (9) to realize electrolytic reaction and enables alkaline ferrate to form on the anode (7A) portion.

Description

technical field [0001] The present invention relates to a process and an apparatus for the continuous production of alkaline ferrates, especially sodium ferrate. Background technique [0002] Alkaline ferrates are very interesting products due to their remarkable oxidizing properties. However, their synthesis is complex and laborious, at least with currently available technologies. [0003] Two typical techniques for the production of alkaline ferrates are the wet technique by reaction of iron with hypochlorite and the electrochemical technique in cells that are not separated from each other or in cells separated by a diaphragm. In a cell, the membrane keeps the anolyte and catholyte separated from each other. [0004] These general techniques have undergone various improvements. [0005] For example, US2455696 describes Fe(OH) 3 Reactions with alkali metal hydroxides and oxidizing agents to form ferrates. [0006] US2536703 describes the formation of perchlorate in cau...

Claims

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Application Information

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IPC IPC(8): C25B1/00C25B9/08C25B9/19
CPCC25B1/00C25B9/19C25B13/04C25B9/00
Inventor 费德里科·里瓦尔塔
Owner INTECNA
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