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Clean production process of soap

A technology for fatty acid salts and cleaner production, which is applied in the preparation of carboxylate and other directions, can solve problems such as environmental pollution, and achieve the effects of reducing production costs and avoiding environmental pollution.

Inactive Publication Date: 2005-01-26
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a clean production process of fatty acid salts, the reaction of fatty acid salts is placed in an organic solvent, and the organic solvent can be recycled and reused, avoiding the production of a large amount of waste water in the traditional production methods of fatty acid salts. the problem of environmental pollution,

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The production of hard fatty acid lead, 100 kilograms of hard fatty acids are dissolved in the mixed solution of ethanol and acetic acid of 70 ℃, the mass ratio of ethanol and acetic acid in mixed solution is 1: 1, and the total mass of mixed solution is 400 kilograms; 38.7 kilograms of lead oxide (equal to 100 kilograms of hard fatty acid equivalent) are dissolved in the mixed solution of ethanol and acetic acid at 70 ℃, the mass ratio of ethanol and acetic acid in the mixed solution is 1: 1, and the total mass of the mixed solution is 100 kilograms, Then add the two into the reaction kettle, stir, immediately react to form hard fatty acid lead precipitate, filter, dry the filter cake in nitrogen at 90°C to obtain the product hard fatty acid lead, and the filtrate is a mixture of ethanol and acetic acid, which can be recycled.

Embodiment 2

[0015] The production of hard fatty acid calcium, 100 kilograms of hard fatty acids are dissolved in the mixed solution of ethanol and acetic acid of 70 ℃, the mass ratio of ethanol and acetic acid in mixed solution is 1: 1, and the total mass of mixed solution is 400 kilograms; 9.5 kilograms of calcium oxide (equal to 100 kilograms of hard fatty acid equivalents) are dissolved in the mixed solution of ethanol and acetic acid at 70°C, the mass ratio of ethanol and acetic acid in the mixed solution is 1: 1, and the total mass of the mixed solution is 50 kilograms, Then add the two into the reaction kettle, stir, immediately react to form calcium stearate precipitate, filter, and dry the filter cake in nitrogen at 90°C to obtain the product calcium stearate. The filtrate is a mixture of ethanol and acetic acid, which can be recycled.

Embodiment 3

[0017] The production of hard fatty acid calcium, 100 kilograms of hard fatty acids are dissolved in the ethanol of 70 ℃, and the quality of ethanol is 400 kilograms; Simultaneously 12.6 kilograms of calcium hydroxides (equal to 100 kilograms of hard fatty acid equivalents) are dissolved in acetic acid of 70 ℃, The quality of acetic acid is 50 kg, then the two are added into the reaction kettle, stirred, react immediately to generate calcium stearate precipitate, filter, and dry the filter cake in nitrogen at 90°C to obtain the product calcium stearate, the filtrate is the mixture of ethanol and acetic acid The mixed solution can be recycled.

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PUM

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Abstract

The invention discloses a process for clean production of fatty acid salts which consists of, dissolving 1 wt. portion of fatty acid into 3-10 wt. portions of organic solvent or mixed organic solvent, then dissolving metallic oxide or metallic hydroxide having equivalent weight with 1 wt. portion of fatty acid into 3-10 wt. portions of organic solvent or mixed organic solvent, controlling the temperature between 50-90 deg. C, mixing the two in reaction kettle, agitating, reacting, producing fatty acid salt deposition, filtering, obtaining organic solvent or hybrid organic solvent, drying the filter cake in 80-100 deg. C inert gas to obtain the fatty acid salt product.

Description

Technical field [0001] The invention relates to a clean production process of fatty acid salt. Background technique [0002] Fatty acid salt is an important industrial additive. The traditional preparation process is neutralization reaction of fatty acid and sodium hydroxide aqueous solution, replacement reaction with metal salt solution, washing with water, pressure filtration, and drying to obtain the product. During the production process, about 20 tons of waste water will be produced to pollute the environment for every ton of product produced. At the same time, the traditional production method has low product yield and high production cost. Contents of the invention [0003] The purpose of the present invention is to provide a clean production process of fatty acid salts, the reaction of fatty acid salts is placed in an organic solvent, and the organic solvent can be recycled and reused, avoiding the production of a large amount of waste water in the traditional prod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/41
Inventor 南碎飞窦梅
Owner ZHEJIANG UNIV