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Chlorinated paraffin 70 product and preparation method thereof

A technology for chlorinated paraffins and products, applied in the field of chlorinated paraffins and its preparation, can solve the problems of slow reaction speed, incomplete reaction, and long time, and achieve the effects of low cost, controllable chlorine content, and high production efficiency

Inactive Publication Date: 2019-04-09
刘屹凡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But there are still problems of slow response and incomplete response
Slow response, too long; more than 100 hours

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1, a kind of chlorinated paraffin 70 product mentioned in the present invention and preparation method, its specific preparation method is as follows:

[0030] 1. Will use C 20 ~C 24 The liquid paraffin of saturated alkanes is pumped into the liquid wax high-level storage tank. After reaching the set liquid level, the pumping of liquid paraffin is stopped, and the liquid wax high-level storage tank starts to be heated by steam. Insulation and constant temperature, after the chlorination reaction, the liquid wax high-level storage tank is heated by the warm water of the reaction kettle for chlorination reaction, and then the liquid paraffin is injected into the activated carbon tower and the silica gel tower for absorption to obtain refined liquid wax. The activated carbon tower can effectively absorb aromatics, sulfur, Ammonia and oxygen derivatives, the silica gel tower absorbs water and colored substances in liquid paraffin; the obtained refined liquid wax f...

Embodiment 2

[0035] Embodiment 2, a kind of chlorinated paraffin 70 product mentioned in the present invention and preparation method, its specific preparation method is as follows:

[0036] 1. Will use C 20 ~C 24 The liquid paraffin of saturated alkanes is pumped into the liquid wax high-level storage tank. After reaching the set liquid level, the pumping of liquid paraffin is stopped, and the liquid wax high-level storage tank starts to be heated by steam. Insulation and constant temperature, after the chlorination reaction, the liquid wax high-level storage tank is heated by the warm water of the reaction kettle for chlorination reaction, and then the liquid paraffin is injected into the activated carbon tower and the silica gel tower for absorption to obtain refined liquid wax. The activated carbon tower can effectively absorb aromatics, sulfur, Ammonia and oxygen derivatives, the silica gel tower absorbs water and colored substances in liquid paraffin; the obtained refined liquid wax...

Embodiment 3

[0041] Embodiment 3, a kind of chlorinated paraffin 70 product mentioned in the present invention and preparation method, its specific preparation method is as follows:

[0042] 1. Will use C 20 ~C 24 The liquid paraffin of saturated alkanes is pumped into the liquid wax high-level storage tank. After reaching the set liquid level, the pumping of liquid paraffin is stopped, and the liquid wax high-level storage tank starts to be heated by steam. Insulation and constant temperature, after the chlorination reaction, the liquid wax high-level storage tank is heated by the warm water of the reaction kettle for chlorination reaction, and then the liquid paraffin is injected into the activated carbon tower and the silica gel tower for absorption to obtain refined liquid wax. The activated carbon tower can effectively absorb aromatics, sulfur, Ammonia and oxygen derivatives, the silica gel tower absorbs water and colored substances in liquid paraffin; the obtained refined liquid wax...

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PUM

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Abstract

The invention relates to a chlorinated paraffin 70 product and a preparation method thereof. According to the technical scheme, the preparation method comprises: carrying out chlorination reaction byusing liquid paraffin and chlorine under action of a heat chlorination process to generate chlorinated paraffin, wherein the reaction is generally carried out by the following steps: step 1, absorbingradicals or heat energy through chlorine molecules, generating active chlorine atoms, capturing hydrogen in alkane molecules and generating hydrogen chloride and alkyl radicals; and step 2, carryingout second step reaction through alkane with radicals and chlorine molecules, generating new active chlorine atoms and chloralkane, then carrying out reaction through the active chlorine atoms and chloralkane molecules, generating chloralkane with radicals and hydrogen chloride, and carrying out chain reaction. The preparation method of the chlorinated paraffin 70 product has the beneficial effects that ultrasonic oscillation is carried out once or twice, the breakage of C-H bonds of refined liquid wax is accelerated, the active chlorine atoms are accelerated to substitute hydrogen in molecular chains of the refined liquid wax, the substitution chain reaction rate is increased, the conversion rate of chlorine is increased, the process is simple, the production efficiency is high, the reaction speed is rapid, the reaction is complete, and the product is stable in quality and is safe, environmentally friendly and pollution-free.

Description

technical field [0001] The invention relates to a chlorinated paraffin and a preparation method, in particular to a chlorinated paraffin 70 product and a preparation method. Background technique [0002] Chlorinated paraffin 70 is an important flame retardant, which has been widely used abroad. With the establishment and improvement of my country's flame retardant regulations, this product is widely used in rubber, cable, and plastic processing industries due to its low price. [0003] The domestic traditional chlorinated paraffin-70 preparation methods mainly include the following three methods. The first one is the "carbon tetrachloride solvent method". Technical indicators such as weight and softening point are the easiest to meet the requirements. The disadvantage is to use RCl-42, three to four times carbon tetrachloride as a solvent. Because carbon tetrachloride has a low boiling point and is volatile, it is more toxic to humans and It is a substance that destroys the...

Claims

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Application Information

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IPC IPC(8): C10G73/38C07C17/10C07C19/01
CPCC07C17/10C10G73/38C07C19/01
Inventor 刘屹凡刘森瑞陈育宁
Owner 刘屹凡