Stabilizer for tetrachloroethylene and preparation method of stabilizer

A technology of tetrachlorethylene and stabilizer, applied in the disproportionation separation/purification of halogenated hydrocarbons, organic chemistry, etc., can solve the problems of poor moisture resistance, high corrosion rate of equipment, poor thermal stability, etc., and achieve good moisture resistance and corrosion resistance Low efficiency and good thermal stability

Active Publication Date: 2016-10-12
SHANDONG XINLONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (2) Short service life
[0007] (3) Poor thermal stabilit

Method used

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  • Stabilizer for tetrachloroethylene and preparation method of stabilizer
  • Stabilizer for tetrachloroethylene and preparation method of stabilizer
  • Stabilizer for tetrachloroethylene and preparation method of stabilizer

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039] Embodiment 1 A kind of stabilizer for tetrachloroethylene

[0040] Include the following components by weight:

[0041] 58 g of triethanolamine, 50 g of n-pentane, 50 g of butylene chloride, 50 g of butylene oxide, 5 g of thymol,

[0042] The consumption of the stabilizer in tetrachloroethylene is 0.0213%;

[0043] The triethanolamine is produced by the fine chemical plant of Laiyang Economic and Technological Development Zone.

[0044] The n-pentane was produced by Shanghai Lingfeng Chemical Reagent Co., Ltd.

[0045] The thymol was produced by Tianjin Institute of Chemical Reagents.

[0046] The butylene oxide is imported from Japan.

[0047] The butylene chloride is imported from Japan.

[0048] The quality requirements of each component in the stabilizer of the present invention:

[0049] Table 1 Triethanolamine quality index

[0050]

[0051] Table 2 n-pentane quality index

[0052]

[0053] Table 3 Quality index of butylene chloride

[0054]

[0...

Example Embodiment

[0076] Example 2 A stabilizer for tetrachloroethylene

[0077] Including the following components by weight: 64 g of triethanolamine, 80 g of n-pentane, 80 g of butylene chlorohydrin, 80 g of butylene oxide, and 5 g of thymol;

[0078] The consumption of the stabilizer in tetrachloroethylene is 0.0309%;

[0079] The triethanolamine is produced by the fine chemical plant of Laiyang Economic and Technological Development Zone.

[0080] The n-pentane was produced by Shanghai Lingfeng Chemical Reagent Co., Ltd.

[0081] The thymol was produced by Tianjin Institute of Chemical Reagents.

[0082] The butylene oxide is imported from Japan.

[0083] The butylene chloride is imported from Japan.

[0084] The requirements of the stabilizer for tetrachloroethylene of the present invention to tetrachloroethylene:

[0085] The purity of raw tetrachloroethylene is ≥99.99%;

[0086] The acid value of raw tetrachloroethylene (calculated by HCL) is less than or equal to 10ppm;

[0087] ...

Example Embodiment

[0097] Embodiment 3 A kind of stabilizer for tetrachloroethylene

[0098] Including the following components by weight: 70 g of triethanolamine, 100 g of n-pentane, 100 g of butylene chloride, 100 g of butylene oxide, and 5 g of thymol;

[0099] The consumption of the stabilizer in tetrachloroethylene is 0.0375%;

[0100] The triethanolamine is produced by the fine chemical plant of Laiyang Economic and Technological Development Zone.

[0101] The n-pentane was produced by Shanghai Lingfeng Chemical Reagent Co., Ltd.

[0102] The thymol was produced by Tianjin Institute of Chemical Reagents.

[0103] The butylene oxide is imported from Japan.

[0104] The butylene chloride is imported from Japan.

[0105] The requirements of the stabilizer for tetrachloroethylene of the present invention to tetrachloroethylene:

[0106] The purity of raw tetrachloroethylene is ≥99.99%;

[0107] The acid value of raw tetrachloroethylene (calculated by HCL) is less than or equal to 10ppm; ...

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Abstract

The invention provides a stabilizer for tetrachloroethylene. The stabilizer comprises the following material components: triethanolamine, n-pentane, butylene chlorohydrin, oxybutylene and thymol. The invention further provides a preparation method of the stabilizer. The stabilizer prepared according to the invention is applied to tetrachloroethylene production; after the stabilizer is added in the tetrachloroethylene, the quality indexes of the tetrachloroethylene are as follow: purity 99.9,615-99.9,918%, pH 9.62-9.75, moisture content 16-18 ppm and chrominance 10; and 360 days later, the purity change rate of the tetrachloroethylene is 0-0.038%, the pH change rate of the tetrachloroethylene is 0.1-0.2%, and the moisture content and the chrominance of the tetrachloroethylene do not change. The stabilizer prepared according to the invention is used for tetrachloroethylene, achieves a service life of two years, has good thermal stability and good moisture resistance, and cannot corrode cleaning equipment and workpieces.

Description

technical field [0001] The invention relates to a stabilizer for tetrachlorethylene, in particular to a stabilizer for tetrachlorethylene and a preparation method thereof. Background technique [0002] Perchlorethylene has excellent properties such as high solubility, high permeability, non-flammability, non-corrosion, and easy recycling. It is widely used as fabric dry cleaning agent, metal degreasing agent and general solvent. [0003] Generally, tetrachlorethylene produced on an industrial scale is easily decomposed by light, air, heat, moisture or metal surfaces during storage or action, and produces acidic substances such as hydrochloric acid, phosgene, trichloroacetic acid or tar-like substances. These decomposition products pollute and damage fibers, corrode equipment in dry cleaning, and corrode washing devices and metal products in metal degreasing and washing. In order to prevent the decomposition of tetrachlorethylene, stabilizers need to be added to ensure stabl...

Claims

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Application Information

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IPC IPC(8): C23G5/028C07C17/42C07C21/12
CPCC07C17/42C23G5/02854C07C21/12
Inventor 苗乃芬李通付炳伟张继梁王继彦杨怀平
Owner SHANDONG XINLONG TECH
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