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Sodium bromate production technology

A production process, sodium bromate technology, applied in the electrolysis process, electrolysis components, etc., can solve the problems of many raw materials and reaction media, long process flow, and fast electrode consumption, so as to improve the labor and production conditions of employees and avoid environmental pollution. Effect

Inactive Publication Date: 2019-03-19
潍坊强奥化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the invention provides a production process of sodium bromate, which solves the problem that the existing sodium bromate production process has a long process flow, many raw materials and reaction media, long electrolysis time, fast electrode consumption, and large scale. Restricted, and the problem of high power consumption

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0029] S1, ingredients: first add liquid caustic soda with a depth of 70cm to the dosing tank, and then slowly add bromine to the liquid caustic soda until the color of the mixed solution appears reddish and no longer fades. Let it stand for 24 hours to cool down, the mixed material liquid is filtered to remove insoluble impurities, and then it is prepared to a certain concentration and poured into the electrolytic cell;

[0030] S2, electrolysis: put S1 into the filtrate in the electrolytic cell for electrolysis, add chromium salt, organic stabilizer A and organic complexing agent B in the ratio of 1.5:2:1 before electrolysis, first run at low current for 1 hour, and then Raise to the value required by the process, control the voltage at 60V, and after 60 hours of electrolysis, the workshop will notify the laboratory technician to take the mixed solution for testing, and determine the specific discharge time based on the test results. In use, the low current value of the firs...

Embodiment 2

[0036]S1, ingredients: first add liquid caustic soda with a depth of 70cm to the dosing tank, and then slowly add bromine to the liquid caustic soda until the color of the mixed solution appears reddish and no longer fades. Let it stand for 24 hours to cool down, the mixed material liquid is filtered to remove insoluble impurities, and then it is prepared to a certain concentration and poured into the electrolytic cell;

[0037] S2. Electrolysis: put S1 into the filtrate in the electrolytic cell for electrolysis, add chromium salt, organic stabilizer A and organic complexing agent B in a ratio of 1:0:0 before electrolysis, first run at low current for 1 hour, and then Raise to the value required by the process, control the voltage at 60V, and after 60 hours of electrolysis, the workshop will notify the laboratory technician to take the mixed solution for testing, and determine the specific discharge time based on the test results. After discharging, adjust the pH value of the f...

Embodiment 3

[0043] S1, ingredients: first add liquid caustic soda with a depth of 70cm to the dosing tank, and then slowly add bromine to the liquid caustic soda until the color of the mixed solution appears reddish and no longer fades. Let it stand for 24 hours to cool down, the mixed material liquid is filtered to remove insoluble impurities, and then it is prepared to a certain concentration and poured into the electrolytic cell;

[0044] S2, electrolysis: put S1 into the filtrate in the electrolytic cell for electrolysis, add chromium salt, organic stabilizer A and organic complexing agent B in a ratio of 0:1:0 before electrolysis, first run at low current for 0.5 hours, and then Raise to the value required by the process, control the voltage at 60V, and after 60 hours of electrolysis, the workshop will notify the laboratory technician to take the mixed solution for testing, and determine the specific discharge time based on the test results. After discharging, adjust the pH value of t...

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Abstract

The invention discloses a sodium bromate production technology which specifically comprises the following steps: S1, dosing: at first, filling liquid alkali with a thickness of 70 cm in a dosing tank,then, slowly adding bromine in the liquid alkali until the color of a mixed solution becomes reddish color and does not fade, adopting test paper to measure pH value to be within the scope of 6.5-7.5, and then, standing the solution for 24 hours, cooling, and filtering the mixed solution to remove insoluble impurities. The invention relates to the technical field of chemical industry production.According to the sodium bromate production technology, during electrolysis, chromium salt is selected to be added as an aid electrolyzer, and an organic stabilizer A and an organic complexing agent Bare used as electrode protective agents, so that the electrolysis time is greatly shortened, the using time of the electrodes and an electrolysis rod is prolonged, the time for changing the electrodesand the electrolysis rod is shortened, the yield is increased, and the production cost is reduced; and compared with the traditional technology, the electrolysis time is greatly shortened by 20%, electricity consumption of each ton of the product is reduced by more than 1500 kwh, and the using period of the electrodes is doubled or above.

Description

technical field [0001] The invention relates to the technical field of chemical production, in particular to a production process of sodium bromate. Background technique [0002] In recent years, the production and market of the dye auxiliaries and organic pigment industries have developed healthily and rapidly, the consumption of dye chemicals has grown rapidly, and the rapid development of the textile industry has greatly increased the demand for dye textile chemicals. The mutual dependence of the dye industry and the textile industry It means that the textile chemical industry has a huge market prospect. Sodium bromate is colorless crystal, white granule or crystalline powder, odorless, decomposes at 381°C and releases oxygen at the same time, soluble in water, insoluble in ethanol, and the aqueous solution is neutral , relative density 3.34, used as analytical reagent and oxidant, perm and dye agent, this product is a strong oxidant, mainly used in printing and dyeing au...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/14C25B1/24C25B15/08
CPCC25B1/14C25B1/24C25B15/08
Inventor 刘英军袁景海
Owner 潍坊强奥化工有限公司
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