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Integrated ClO2 preparation system with relatively independent processes of electrolysis and ClO2 preparation

A chlorine dioxide and preparation system technology, applied in the direction of chlorine dioxide, chlorine oxide, hydrogen chloride preparation, etc., can solve the problems of pure water entering, concentration reduction of weak sodium chlorate solution, affecting the normal operation of the electrolysis system and hydrochloric acid synthesis furnace, etc. , to achieve the effect of improving reaction efficiency and reducing decomposition times

Inactive Publication Date: 2016-10-26
GUANGXI BOSSCO ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the gas in the chlorine dioxide generator decomposes, a large amount of pure water will enter the generator, resulting in a decrease in the concentration of the weak sodium chlorate solution returned to the electrolysis system, seriously affecting the normal operation of the electrolysis system and the hydrochloric acid synthesis furnace

Method used

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  • Integrated ClO2 preparation system with relatively independent processes of electrolysis and ClO2 preparation
  • Integrated ClO2 preparation system with relatively independent processes of electrolysis and ClO2 preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A comprehensive chlorine dioxide preparation system that is relatively independent of electrolysis and chlorine dioxide preparation, made of NaClO 3 Electrolysis and crystal preparation unit, ClO 2 Generation and HCl synthesis unit composition.

[0041] The operating process of the inventive method is as follows:

[0042] 1) First use refined salt water to electrolyze in the sodium chlorate electrolytic cell (2), the electrolyte enters the degasser (1) along with the gas along the pipeline to realize gas-liquid separation, the gas enters the hydrogen cooler (41), and then passes through the hydrogen Enter the hydrochloric acid synthesis furnace (39) behind the mist eliminator (40), and finally generate concentrated NaClO after the liquid flows into the sodium chlorate reactor (5) for reaction 3 Solution electrolyte, containing a concentration of 550g / L sodium chlorate solution and a concentration of 110g / L sodium chloride solution;

[0043] 2) The obtained electrolyt...

Embodiment 2

[0047] A comprehensive chlorine dioxide preparation system that is relatively independent of electrolysis and chlorine dioxide preparation, made of NaClO 3 Electrolysis and crystal preparation unit, ClO 2 Generation and HCl synthesis unit composition.

[0048] The operating process of the inventive method is as follows:

[0049] 1) First use refined salt water to electrolyze in the sodium chlorate electrolytic cell (2), the electrolyte enters the degasser (1) along with the gas along the pipeline to realize gas-liquid separation, the gas enters the hydrogen cooler (41), and then passes through the hydrogen Enter the hydrochloric acid synthesis furnace (39) behind the demister (40), and finally generate concentrated NaClO after the liquid flows into the sodium chlorate reactor reaction 3 Solution electrolyte, containing a concentration of 600g / L sodium chlorate solution and a concentration of 100g / L sodium chloride solution;

[0050] 2) The obtained electrolyte overflows to ...

Embodiment 3

[0054] A comprehensive chlorine dioxide preparation system that is relatively independent of electrolysis and chlorine dioxide preparation, made of NaClO 3 Electrolysis and crystal preparation unit, ClO 2 Generation and HCl synthesis unit composition.

[0055] The operating process of the inventive method is as follows:

[0056] 1) First use refined salt water to electrolyze in the sodium chlorate electrolytic cell (2), the electrolyte enters the degasser (1) along with the gas along the pipeline to realize gas-liquid separation, the gas enters the hydrogen cooler (41), and then passes through the hydrogen Enter the hydrochloric acid synthesis furnace (39) behind the demister (40), and finally generate concentrated NaClO after the liquid flows into the sodium chlorate reactor reaction 3 Solution electrolyte, containing a concentration of 650g / L sodium chlorate solution and a concentration of 90g / L sodium chloride solution;

[0057] 2) The obtained electrolyte overflows to the...

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Abstract

The invention discloses an integrated ClO2 preparation system with relatively independent processes of electrolysis and ClO2 preparation. The system is characterized by comprising a NaClO3 electrolysis and crystal preparation unit, a ClO2 generation unit and an HCl synthesis unit, wherein an electrolyte solution containing NaClO3 crystals is fed into a solid-liquid separator for separation, NaCl and Cr2H4Na2O9 entrained by the NaClO3 crystals are washed off, the obtained NaClO3 crystals are dissolved and filtered and then enter a generator, and a solution which is separated out of the solid-liquid separator and contains NaCl and Cr2H4Na2O9 flows back to an electrolysis system and returns to an electrolytic cell for continuous electrolysis, so that NaCl and Cr2H4Na2O9 are only located in a NaClO3 preparation system without entering the ClO2 generation unit and are recycled; NaCl generated in the ClO2 generation unit is dissolved and then is sent to the NaClO3 preparation unit, and accordingly, supplementation of NaCl is not needed basically.

Description

technical field [0001] The invention relates to the field of comprehensive chlorine dioxide production, in particular to a comprehensive chlorine dioxide preparation system in which electrolysis and chlorine dioxide preparation are relatively independent. Background technique [0002] Chlorine dioxide is a strong oxidizing agent. Stable chlorine dioxide has been considered by the World Health Organization as a fungicide with good effect and a bactericidal disinfectant with excellent performance and good effect. It is widely used in the bleaching section of pulp mills. At present, my country has realized the localization of small chlorine dioxide production equipment for disinfection. The large-scale chlorine dioxide preparation system for on-site preparation and on-site digestion is still in its infancy in China, and the large-scale chlorine dioxide production system adopted by newly-built paper-making enterprises has begun to adopt domestic complete equipment technology. ...

Claims

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Application Information

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IPC IPC(8): C01B11/02C25B1/26
CPCC01B11/025C25B1/265C01B7/012B01J2219/00006B01J2219/0004B01J2219/00087B01J2219/0011B01J2219/00252B01J19/2465C25B15/08B01J19/0013B01J19/06B01J19/087B01J19/245B01J2219/00051B01J2219/0803B01J2219/0877B01J2219/24
Inventor 王双飞詹磊徐萃声宋海农黄丙贵杨彦班飞
Owner GUANGXI BOSSCO ENVIRONMENTAL PROTECTION TECH
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