Stabilizer for preparation of non-phosphate sodium percarbonate and method of use thereof

A stabilizer, sodium carbonate technology, applied in chemical instruments and methods, peroxide/peroxy hydrate/peroxyacid/superoxide/ozonide, inorganic chemistry, etc., can solve the problem of non-compliance with direct emission standards, etc. Problems, to achieve the effect of environmental protection, simple use, uniform particles

Active Publication Date: 2010-10-27
ZHEJIANG JINKE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of producing sodium percarbonate by traditional wet method, the phosphorus contained in the circulating mother liquor is 600-800mg.l -1 , does not meet direct discharge standards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The amount of each component of the stabilizer used to prepare phosphorus-free sodium percarbonate is: 2.0kg silicate, 2.0kg copolymer of carboxylic acid and sulfonate, 2.0kg inorganic magnesium salt, 3.0kg sodium polyacrylate, organic alcohol amine 1.0kg, disodium edetate 0.35kg.

[0016] Add silicate, carboxylic acid and sulfonate copolymer, inorganic magnesium salt into 280kg sodium carbonate, stir until all dissolve.

[0017] Add sodium polyacrylate, organic alcohol amine, and disodium edetate into 350 kg of hydrogen peroxide, and stir until they are completely dissolved.

[0018] Sodium carbonate and hydrogen peroxide that will be added with stabilizing agent are mixed, input in the reaction kettle of belt stirrer and cooling jacket, carry out crystallization production sodium percarbonate product according to the common process in the prior art.

[0019] Contrast test: use raw material sodium carbonate, hydrogen peroxide of same weight, traditional stabilizer con...

Embodiment 2

[0023] The amount of each component of the stabilizer used to prepare phosphorus-free sodium percarbonate is: 3.0kg of silicate, 2.0kg of carboxylic acid and sulfonate copolymer, 3.0kg of inorganic magnesium salt, 4.5kg of sodium polyacrylate, organic alcohol amine 0.08kg, disodium edetate 0.5kg.

[0024] Add silicate, carboxylic acid and sulfonate copolymer, inorganic magnesium salt into 280kg sodium carbonate, stir until all dissolve.

[0025] Add sodium polyacrylate, organic alcohol amine, and disodium edetate into 350 kg of hydrogen peroxide, and stir until they are completely dissolved.

[0026] Sodium carbonate and hydrogen peroxide that will be added with stabilizing agent are mixed, input in the reaction kettle of belt stirrer and cooling jacket, carry out crystallization production sodium percarbonate product according to the common process in the prior art.

[0027] Contrast test: use raw material sodium carbonate, hydrogen peroxide of same weight, traditional stabi...

Embodiment 3

[0031] The amount of each component of the stabilizer used to prepare phosphorus-free sodium percarbonate is: 0.28kg of silicate, 0.28kg of carboxylic acid and sulfonate copolymer, 2.24kg of inorganic magnesium salt, 1.4kg of sodium polyacrylate, organic alcohol amine 0.105kg, disodium edetate 0.35kg.

[0032] Add silicate, carboxylic acid and sulfonate copolymer, inorganic magnesium salt into 280kg sodium carbonate, stir until all dissolve.

[0033] Add sodium polyacrylate, organic alcohol amine, and disodium edetate into 350 kg of hydrogen peroxide, and stir until they are completely dissolved.

[0034] Sodium carbonate and hydrogen peroxide that will be added with stabilizing agent are mixed, input in the reaction kettle of belt stirrer and cooling jacket, carry out crystallization production sodium percarbonate product according to the common process in the prior art.

[0035] Contrast test: use raw material sodium carbonate, hydrogen peroxide of same weight, traditional ...

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Abstract

The invention discloses a stabilizer used for preparing non-phosphorus sodium percarbonate. The stabilizer comprises the following components: silicate, copolymer of carboxylic acid and sulfonate, inorganic magnesium salt, sodium polyacrylate, alkanolamine and EDTA. The invention also provides an application method of the stabilizer. Among the components of the stabilizer, the silicate, the copolymer of carboxylic acid and sulfonate and the inorganic magnesium salt are added into a sodium carbonate material, while the sodium polyacrylate, the alkanolamine and the EDTA are added into a hydrogen peroxide material. The sodium percarbonate prepared with the stabilizer and the application method provided by the invention is provide the even grains and the size of the grain diameter can be prepared optionally; the active oxygen is above 13.8 percent; the bulk density is above 900g / l; the heat stability is above 85 percent and the wet stability is above 55 percent. The stabilizer contains nophosphorus, thus being capable of completely substituting the traditional phosphorus prescription; the application of the stabilizer is simple, thus being capable of greatly reducing the cost and beneficial to environment protection.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a stabilizer for preparing phosphorus-free sodium percarbonate and a use method thereof, which replaces the traditional phosphorus-containing formula and is beneficial to environmental protection. Background technique [0002] Sodium percarbonate, also known as sodium percarbonate, has the general chemical formula 2Na 2 CO 3 ·3H 2 o 2 , the relative molecular mass is 314.0, the theoretical active oxygen content is 15.28%, and it is easily soluble in water. It can release active oxygen, and has the functions of bleaching, sterilization, degreasing and washing. It is widely used as an additive for detergents and color bleaching detergents , It is also used in daily chemical products such as toothpaste and cosmetics. [0003] At present, there are two main production methods of sodium percarbonate in the world: wet method and dry method. Germany is currently ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B15/10
Inventor 章小兵魏一帆王伟
Owner ZHEJIANG JINKE CHEM
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