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Washing assistant produced from sulfonation byproduct nigrotic acid and application thereof

A technology of washing auxiliaries and by-products, applied in the directions of detergent compounding agents, detergent compositions, soap detergent compositions, etc., can solve the problems of reducing product aesthetics, poor fluidity of solid products, and high water content of materials

Active Publication Date: 2012-09-12
上海奥威日化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, few people use the neutralized and bleached products directly, because the treated black acid recovery material contains 15-30% inorganic salts, i.e. Glauber's salt and sodium chloride, and the water content is also 30-50%. Left and right, if the amount added to the liquid detergent is too much, the content of inorganic salt will also increase, causing the liquid detergent product to be stratified; and if the amount added to the solid detergent is too much, due to the high moisture content, the solid product will be delaminated. The fluidity becomes extremely poor, which also reduces the aesthetics of the product
[0008] It is precisely because of the high water content of the material during the treatment of black acid by-products that the application of the treated product is greatly restricted.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1. Weigh 1Kg of solid caustic soda, and make a 30% solution of caustic soda for later use;

[0033] 2. Mix sulfonic black acid and AOS black acid at a ratio of 4:6 and weigh 5Kg of the mixed acid. In a 25Kg plastic bucket, slowly add caustic soda and keep stirring to control the reaction speed to prevent the temperature from being too high (around 60°C) and prevent swelling;

[0034] Take a sample in the plastic barrel for dilution, and then measure the pH value of the liquid material with pH test paper until the object in the plastic barrel becomes a neutral pH value of 7-10, stop adding caustic soda when the neutralization reaction is completed; make the surface in the black acid The active agent becomes its sodium salt, so that the waste sulfuric acid in the black acid becomes the detergent raw material Glauber's salt;

[0035] 3. Leave it for a period of time to cool the material in the plastic bucket to 40°C, and then carry out the bleaching reaction, which can ma...

Embodiment 2

[0040] 1. Application in washing powder

[0041] Because the black acid recovery treatment of the present invention contains high active matter, it can replace sulfonic acid and other surfactants in whole or in part in washing and washing powder, which can reduce costs and improve the washing performance of products. The decontamination test shows that sodium alkylbenzene sulfonate (LAS) and detergent builder REA have a good synergistic effect between the two mass ratios of 4: 1-5 in the phosphorus-containing powder, and LAS: REA is 4: At 3, the synergistic effect is the most significant, as shown in the table below.

[0042] LAS to REA ratio

Without REA

4∶1

4∶2

4∶3

4∶4

4∶5

Detergency comparison

relative to 1

1.05

1.1

1.15

1.1

1.05

[0043] In the phosphorus-free laundry powder with LAS and REA as anionic active components, when the mass ratio of REA to anionic active components is 30-5...

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PUM

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Abstract

The invention discloses a washing assistant produced from a sulfonation byproduct nigrotic acid and an application thereof. The assistant is produced with the following steps: 1, adding caustic soda to nigrotic acid for neutralization to change a surfactant in nigrotic acid into a sodium salt of the surfactant and waste sulfuric acid in nigrotic acid into a raw material of a washing agent mirabilite; 2, bleaching a product which is obtained after neutralizing with nigrotic acid with a sodium hypochlorite solution; 3, adding clear water to a bleached solution, and spray drying; and 4, adding soda ash or a 4A zeolite to a material obtained after spray drying, and granulating. A main component of the assistant of the present invention is particles of the surfactant, mirabilite, and soda ash,and the assistant which has a very wide application in the washing agent allows salvaging, cost saving, and the good environmental protection effect to be greatly realized.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a washing aid produced by using black acid, a by-product of sulfonation, and an application method thereof. Background technique [0002] Surfactants are the main raw materials for the production of detergents, shampoos, cosmetics and other products. During the sulfonation of sulfonic acid, AOS, AES and other surfactants, the tail gas contains organic mist particles, SO 2 , SO 3 and other substances, the organic particles in the exhaust gas can be effectively removed by using an electrostatic demister. Due to the excessive sulfonation of organic matter, the color of the by-products is very dark. The waste acid (accounting for 0.1%-0.4% of the organic raw material) received from the electrostatic demister is generally black and unstable in composition. These by-products Basically, it cannot be used directly and is called black acid. Moreover, the production of sulfo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C11D3/04C11D3/10C11D3/60C11D1/37C11D9/60C11D9/10C11D9/12C11D9/38
Inventor 孙宗仁
Owner 上海奥威日化有限公司