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Environment-friendly chlorcosane-70 manufacturing technique

A chlorinated paraffin and production process technology, which is applied in the field of organic chloride production process, can solve the problems of high blood toxicity and high price, and achieve the effects of uniform particle size, high recovery efficiency, and less material transfer process

Inactive Publication Date: 2009-09-09
HUAIHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, halogenated benzene is not only expensive, but also highly toxic to the blood of humans and other animals

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] Chlorination process operation: at 1M 3 Squeeze 530 kilograms of carbon tetrachloride and 300 kilograms of chlorinated paraffin-42 in the special-shaped still of chlorination reaction. Turn on the steam valve and material circulation pump, light switch, cooling water valve of the heat exchanger, cooling water valve and chlorinated paraffin-42 circulation pump of the chlorination reaction special-shaped kettle, and wait until the temperature of the material in the kettle rises to After 55-75°C, open the chlorine gas valve and meter chlorine gas. When the end point is reached, the chlorination process operation is ended. The material circulation pump turns to send the chlorination reaction product solution in the special-shaped chlorination reaction tank to the storage tank for standby.

[0024] Spraying, washing, neutralization, desolventization and finished product process operations: at 1M 3 Inject 500 kg of clear water and 30 kg of magnesium hydroxide into the wash...

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Abstract

The invention provides an environment-friendly chlorcosane-70 manufacturing technique, and is characterized in that a chlorcosane-42 spray cooling absorption tower is added in photochemical chlorination reaction process, and tail gas generated from photochemical chlorination reaction is absorbed in cleaning treatment. Spraying, solvent emersion, washing, neutralization and granulation processes are finished at one time in a spray desorption solvent tower. The environment-friendly chlorcosane-70 manufacturing technique provided by the invention has the characteristics of simplified process, fewer material transport processes, high-efficient carbon tetrachloride solvent recycling, homogeneous grain diameter of chlorcosane-70 products, and the like.

Description

technical field [0001] The invention relates to a production process of organic chlorides. It particularly relates to an environmentally friendly production process for chlorinated paraffin-70. technical background [0002] Chlorinated paraffin-70 refers to the paraffin chlorination product with a chlorine mass content of 68-72%. The molecular formula can be C 25 h 30 Cl 22 or C 24 h 29 Cl 21 express. Its appearance is white, light white powder or light yellow powder. Soluble in toluene, acetone, ethyl acetate, dichloroethane, carbon tetrachloride and other organic solvents, insoluble in water and lower alcohols such as methanol, ethanol, isopropanol and n-butanol. At room temperature, its chemical properties are stable, and it does not react with water, oxidants, dilute acids and dilute alkali solutions. Among the organic halide flame retardants, chlorinated paraffin-70 is a low-cost additive flame retardant, which has good flame-retardant durability, and has moist...

Claims

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Application Information

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IPC IPC(8): C07C17/10C07C19/01C10G73/38
Inventor 张田林张晓红郑斌
Owner HUAIHAI INST OF TECH
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