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Electrolyte composition for electrolysis of brine, method for electrolysis of brine, and sodium hydroxide prepared therefrom

A technology of sodium hydroxide and salt water electrolysis, applied in electrolysis components, electrolysis process, cells, etc., can solve problems such as reduced productivity, consumption, and unusable electrolysis cells

Inactive Publication Date: 2007-04-11
HANWHA CHEMICAL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that, in proportion to the increased resistance, more energy is consumed in electrolysis, and the production cost of sodium hydroxide increases
However, renewal of electrode plates requires a lot of time, manpower, and material resources, and the electrolyzer cannot be used for the time required for renewal, thus reducing productivity

Method used

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  • Electrolyte composition for electrolysis of brine, method for electrolysis of brine, and sodium hydroxide prepared therefrom
  • Electrolyte composition for electrolysis of brine, method for electrolysis of brine, and sodium hydroxide prepared therefrom
  • Electrolyte composition for electrolysis of brine, method for electrolysis of brine, and sodium hydroxide prepared therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] In 1 liter of pure water, add 10 g of hexachloroplatinate (IV) (H 2 PtCl 6 ·6H 2 O) to prepare an aqueous solution of hexahydroxyhydroplatinate (IV). The aqueous solution and pure water were injected into the platinum compound aqueous solution injection pipe and the pure water injection pipe in the electrolytic cell, respectively. Inject brine into the electrolytic cell, inject the electrolyte composition containing the prepared platinum compound aqueous solution into a cathode circulation tube, and electrolyze the brine for 3 minutes to prepare an aqueous sodium hydroxide solution. The total amount of injected pure water was 10 liters, and the total amount of injected hexachloroplatinate (IV) was 1 liter.

Embodiment 2

[0073] Prepare aqueous sodium hydroxide solution with the same method as in Example 1, the difference is that potassium tetrachloroplatinate (II) (K 2 PtCl 4 ) as a platinum compound.

Embodiment 3

[0075] The same method is used to prepare aqueous sodium hydroxide solution in Example 1, the difference is that diaminodinitroplatinum (II) (Pt(NH 3 ) 2 (NO) 2 ) as a platinum compound.

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Abstract

The present invention relates to an electrolyte composition for electrolysis of brine, a method for electrolysis of brine, and sodium hydroxide prepared therefrom, and particularly to an electrolyte composition for electrolysis of brine, a method for electrolysis of brine comprising injecting brine and pure water respectively to a cation chamber and an anion chamber divided by a separation membrane installed in an electrolytic cell through a brine injection tube and a pure water injection tube, and applying a power source to an anode plate and a cathode plate installed in the cation chamber and anion chamber to separate produced chloride gas, hydrogen gas, and a sodium hydroxide aqueous solution characterized in that an aqueous solution of a platinum compound is injected into the anion chamber through the pure water injection tube, and sodium hydroxide prepared therefrom.

Description

[0001] Cross References to Related Applications [0002] This application is based on Korean Patent Application No. 2002-0016970 filed with the Korean Intellectual Property Office on March 28, 2002 and Korean Patent Application No. 2002-0018673 filed with the Korean Intellectual Property Office on April 4, 2002, the contents of which are incorporated by reference was inserted into this article. technical field [0003] The present invention relates to an electrolyte composition for brine electrolysis, a method for brine electrolysis and sodium hydroxide prepared therefrom, in particular to an electrolyte composition for brine electrolysis and a method for brine electrolysis The method of brine electrolysis, which minimizes the resistance of the electrode plates and thus reduces power consumption, does not require the separation of the electrolyzer by interrupting the electrolysis in order to replace the electrode plates, thu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/34C25B1/16C25B1/26C25B1/46C25B9/00
CPCC25B1/46C25B1/16
Inventor 金大植金炯官金炯穆
Owner HANWHA CHEMICAL CORPORATION
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