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Solid hydrogen peroxide preparation technology

A solid hydrogen peroxide, preparation technology, applied in bleaching products, textiles and papermaking, non-surfactant detergent composition, etc., can solve the problems of insufficient utilization of mother liquor and high production cost, achieve low cost, short process cycle, overcome The effect of higher production cost

Active Publication Date: 2013-10-16
CHANGZHOU XIAOGUO INFORMATION SERVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The preparation method of solid hydrogen peroxide in the prior art mainly contains the following two kinds: one is the "two-step" method in which hydrogen peroxide is the key component. The advantage of this method is that the product has a higher yield, and the highest yield is 80%. left and right, but the mother liquor produced in the second step suction filtration process is not fully utilized; the second is the "conventional" circulation preparation method, the advantage is that the mother liquor produced in the preparation process can be fully utilized, but with high mass fraction hydrogen peroxide (50 %) is the basic raw material, and the production cost is relatively high

Method used

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  • Solid hydrogen peroxide preparation technology

Examples

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Effect test

Embodiment 1

[0019] A kind of solid hydrogen peroxide preparation process has the following steps:

[0020] (1) Prepare sodium sulfate, hydrogen peroxide and sodium chloride at a molar ratio of 4:2.1:1, knead the mixture of sodium sulfate and sodium chloride in a kneader until there are no lumps, and the mass fraction of hydrogen peroxide is 30 %;

[0021] (2) Spray hydrogen peroxide into the above mixture three times within 60 minutes, and at the same time, continue to knead and mix the compound of sodium sulfate, hydrogen peroxide and sodium chloride until there is no agglomeration;

[0022] (3) Put the mixture obtained in step (2) in an oven and dry at 35°C for 60 minutes to obtain the finished product. Embodiment two

Embodiment 2

[0023] A kind of solid hydrogen peroxide preparation process has the following steps:

[0024] (1) Prepare sodium sulfate, hydrogen peroxide and sodium chloride at a molar ratio of 4:2.2:1, knead the mixture of sodium sulfate and sodium chloride in a kneader until there is no lump;

[0025] (2) Spray hydrogen peroxide into the above mixture three times within 70 minutes, and at the same time, continue to knead and mix the compound of sodium sulfate, hydrogen peroxide and sodium chloride until there is no agglomeration;

[0026] (3) Place the mixture obtained in step (2) in an oven and dry at 40°C for 45 minutes to obtain the finished product. Embodiment three

Embodiment 3

[0027] A kind of solid hydrogen peroxide preparation process has the following steps:

[0028] (1) Prepare sodium sulfate, hydrogen peroxide and sodium chloride at a molar ratio of 4:2.3:1, knead the mixture of sodium sulfate and sodium chloride in a kneader until there is no lump;

[0029] (2) Spray hydrogen peroxide into the above mixture 4 times within 90 minutes, and at the same time, continue to knead and mix the compound of sodium sulfate, hydrogen peroxide and sodium chloride until there is no agglomeration;

[0030] (3) Place the mixture obtained in step (2) in an oven and dry at 50°C for 30 minutes to obtain the finished product. Embodiment four

[0031] A kind of solid hydrogen peroxide preparation process has the following steps:

[0032] (1) Prepare sodium sulfate, hydrogen peroxide and sodium chloride at a molar ratio of 4:2.5:1, knead the mixture of sodium sulfate and sodium chloride in a kneader until there are no lumps;

[0033] (2) Spray hydrogen peroxide i...

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Abstract

The invention relates to the technical field of preparation of solid oxygen-bearing bleaching agent, in particular to a solid hydrogen peroxide preparation technology. The preparation technology comprises the step of kneading sodium sulfate, hydrogen peroxide and salt in a kneader at a certain proportion to obtain the finished product. According to the invention, the ordinary 30% hydrogen peroxide can serve as a basic material, the problems that the preparation cost is higher, the mother liquor is not fully utilized and waste liquid is discharged in the prior art are solved, the yield of hydrogen peroxide in the obtained finished product is more than 80 percent, the process period is shorter, the cost is lower, no three-waste emission exists, and the solid hydrogen peroxide preparation technology is suitable for large-scale popularization and application.

Description

technical field [0001] The invention relates to the technical field of preparation of solid oxygen-containing bleaching agents, in particular to a preparation process of solid hydrogen peroxide. Background technique [0002] In order to improve the bleaching effect of washing products, a certain amount of bleaching agent is usually added to washing products. Due to the mild oxidation performance of hydrogen peroxide and no damage to some animal fibers and fabric fibers, inorganic hydrogen peroxide adducts such as sodium percarbonate, sodium perborate and sodium hydrogen peroxide pyrophosphate are often used as detergent aids . The presence of hydrogen peroxide can not only bleach, but also have functions such as sterilization and disinfection, but these substances are highly alkaline in aqueous solution. Since hydrogen peroxide is unstable in an alkaline environment and is easy to decompose, the application fields of such hydrogen peroxide adducts are limited to a certain ...

Claims

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Application Information

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IPC IPC(8): C11D7/54D21H21/32D06L3/02D06L4/12D06L4/13
Inventor 徐景峰彭加平李耀中周勇徐瑾
Owner CHANGZHOU XIAOGUO INFORMATION SERVICES
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