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A kind of preparation method of stable instant sodium percarbonate

A sodium percarbonate, instant-type technology, applied in the field of inorganic salts, can solve the problems of complex process, strict equipment requirements, high cost, etc., and achieve the effect of simple process

Active Publication Date: 2017-01-25
宣城优度科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods are basically spray granulation and extrusion granulation to make sodium percarbonate. Extrusion granulation needs to be dried and crushed before granulation. The process is complicated and the dust is large.
However, the spray granulation preparation process is complicated, the equipment requirements are strict, and the cost is high.
Prior art also discloses a kind of preparation method of suggested instant sodium percarbonate, but its stability is relatively poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Prepare the preparation method of stable instant sodium percarbonate, the steps are as follows:

[0021] (1) Add 0.3% amino trimethylene phosphonic acid to a hydrogen peroxide solution with a mass concentration of 20%, stir and mix evenly to obtain a hydrogen peroxide solution;

[0022] (2) Add compound stabilizer to saturated sodium carbonate solution and cool to 15 °C, slowly add hydrogen peroxide solution at a uniform speed, and stir while adding. The 30% hydrogen peroxide solution added with composite stabilizer was washed several times and dried;

[0023] The substance ratio of hydrogen peroxide and sodium carbonate is 1:2;

[0024] The components of the composite stabilizer are: chitosan, magnesium sulfate heptahydrate, and sodium metasilicate prepared according to the mass ratio of 1:2000:300, and the addition amount is 0.8% of the mass of sodium carbonate;

[0025] (3) It can be further compressed into granules to become instant and stable sodium percarbonate ...

Embodiment 2

[0031] Prepare the preparation method of stable instant sodium percarbonate, the steps are as follows:

[0032] (1) Add 0.2% amino trimethylene phosphonic acid to a hydrogen peroxide solution with a mass concentration of 50%, stir and mix evenly to obtain a hydrogen peroxide solution;

[0033] (2) Add compound stabilizer to saturated sodium carbonate solution and cool to 18 °C, slowly add hydrogen peroxide solution at a uniform speed, and stir while adding, the feeding time is 12 minutes, then heat up to 22 °C, stand for crystallization for 50 minutes, filter with suction, and use for filter cake The 30% hydrogen peroxide solution added with composite stabilizer was washed several times and dried;

[0034] The substance ratio of hydrogen peroxide and sodium carbonate is 1:2;

[0035] The components of the composite stabilizer are: chitosan, magnesium sulfate heptahydrate, and sodium metasilicate prepared according to the mass ratio of 1:2000:300, and the addition amount is 0....

Embodiment 3

[0042] Prepare the preparation method of stable instant sodium percarbonate, the steps are as follows:

[0043] (1) Add 0.3% aminotrimethylene phosphonic acid to a hydrogen peroxide solution with a mass concentration of 40%, stir and mix evenly to obtain a hydrogen peroxide solution;

[0044] (2) Add compound stabilizer to saturated sodium carbonate solution and cool to 16 °C, slowly add hydrogen peroxide solution at a uniform speed, and stir while adding. The 30% hydrogen peroxide solution added with composite stabilizer was washed several times and dried;

[0045] The substance ratio of hydrogen peroxide and sodium carbonate is 1:2;

[0046] The components of the composite stabilizer are: chitosan, magnesium sulfate heptahydrate, and sodium metasilicate prepared according to the mass ratio of 1:2000:300, and the addition amount is 0.7% of the mass of sodium carbonate;

[0047] (3) It can be further compressed into granules to become instant and stable sodium percarbonate g...

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PUM

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Abstract

The invention discloses a preparation method of stable quick-dissolving sodium percarbonate. The preparation method comprises following steps: amino trimethylene phosphonic acid is added into a hydrogen peroxide aqueous solution with a mass concentration ranging from 20 to 50%; an obtained mixture is stirred to be uniform so as to obtain a hydrogen peroxide solution; a composite stabilizer is added into a saturated sodium carbonate solution, an obtained mixture is cooled to 15 to 18 DEG C, and the hydrogen peroxide solution is added slowly with stirring, wherein material adding time is controlled to be 12 to 15min; an obtained mixed solution is heated to 22 DEG C, and is allowed to stand for 40 to 50min of crystallization; an obtained product is subjected to pumping filtration; an obtain filter cake is washed with a hydrogen peroxide aqueous solution which is obtained via adding of the composite stabilizer and possesses a concentration of 30% for a plurality of times, and then is dried. The preparation method is simple; quick-dissolving sodium percarbonate with can be stored stably for 50 days or longer is prepared.

Description

technical field [0001] The invention belongs to the technical field of inorganic salts, in particular to a preparation process of stable instant sodium percarbonate. Background technique [0002] Sodium percarbonate has strong oxidizing, bleaching, stain-removing, and bactericidal effects, and is odorless, non-toxic, and non-polluting, so it is widely used in washing, textile, printing and dyeing, papermaking, food, medical and health, and metal processing industries. Sodium percarbonate is easily soluble in water, releases active oxygen, and has the functions of bleaching, sterilizing, degreasing and washing. It is widely used as an additive for detergents and washing powder, and is also used in daily chemical products such as toothpaste and cosmetics. . As a new type of high-efficiency detergent bleach, it is odorless, non-toxic and non-polluting. Because the active oxygen generated by decomposition in water has a bleaching effect, sodium percarbonate shows a strong deco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B15/10
Inventor 泮连江
Owner 宣城优度科技服务有限公司