Method of producing chlorinated paraffin-70 through low temperature catalysis

A technology of chlorinated paraffin and low-temperature catalysis, which is applied in the chemical/physical/physicochemical process of energy application, petrochemical modification, etc. It can solve the problems of many production equipment, waste acid generation, poor product quality, etc., and avoid color Effects of deepening, lowering reaction temperature, lowering energy consumption

Inactive Publication Date: 2020-03-31
山东沾化阳光化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems in the production of CP-70 such as poor product quality, many production equipments, and generation of waste acid, the present invention provides a method for catalytically producing chlorinated paraffin-70 at low temperature to solve the above problems

Method used

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  • Method of producing chlorinated paraffin-70 through low temperature catalysis
  • Method of producing chlorinated paraffin-70 through low temperature catalysis
  • Method of producing chlorinated paraffin-70 through low temperature catalysis

Examples

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Embodiment 1

[0050] A method for low-temperature catalytic production of chlorinated paraffin-70, the specific preparation steps are as follows:

[0051] (1) Put 1400kg of solid paraffin into the reaction kettle, heat up to 100° C. to melt the solid paraffin; after the solid paraffin is completely melted, press it into the prefabricated kettle for light-induced reaction to obtain liquid paraffin;

[0052] (2) in the liquid paraffin of step (1), add 1.5kg azobisisobutyronitrile and 1.5kg N, N-dimethylaniline;

[0053] (3) the reaction solution in the step (2) is transferred to the early stage chlorination kettle, feeds chlorine, and carries out the early stage chlorination reaction, until the chlorine content of the chlorinated paraffin in the early stage chlorination kettle reaches 36%, gets the early stage chlorinated paraffin liquid ;

[0054] (4) the chlorinated paraffin liquid in the earlier stage gained in the step (3) is transferred to the later stage chlorination kettle, feeds chlo...

Embodiment 2

[0058] A method for low-temperature catalytic production of chlorinated paraffin-70, the specific preparation steps are as follows:

[0059] (1) Put 1400kg of solid paraffin into the reaction kettle, heat up to 110° C. to melt the solid paraffin; after the solid paraffin is completely melted, press it into the prefabricated kettle for light-induced reaction to obtain liquid paraffin;

[0060] (2) in the liquid paraffin of step (1), add 1.5kg azobisisobutyronitrile and 1.5kg N, N-dimethylaniline;

[0061] (3) the reaction solution in the step (2) is transferred to the early stage chlorination kettle, feeds chlorine, and carries out the early stage chlorination reaction, until the chlorine content of the chlorinated paraffin in the early stage chlorination kettle reaches 36%, gets the early stage chlorinated paraffin liquid ;

[0062] (4) the chlorinated paraffin liquid in the earlier stage gained in the step (3) is transferred to the later stage chlorination kettle, feeds chlo...

Embodiment 3

[0066] A method for low-temperature catalytic production of chlorinated paraffin-70, the specific preparation steps are as follows:

[0067] (1) Put 1400kg of solid paraffin into the reaction kettle, heat up to 100° C. to melt the solid paraffin; after the solid paraffin is completely melted, press it into the prefabricated kettle for light-induced reaction to obtain liquid paraffin;

[0068] (2) in the liquid paraffin of step (1), add 1.0kg azobisisobutyronitrile and 1.5kg N, N-dimethylaniline;

[0069] (3) the reaction solution in the step (2) is transferred to the early stage chlorination kettle, feeds chlorine, and carries out the early stage chlorination reaction, until the chlorine content of the chlorinated paraffin in the early stage chlorination kettle reaches 36%, gets the early stage chlorinated paraffin liquid ;

[0070] (4) the chlorinated paraffin liquid in the earlier stage gained in step (3) is transferred to the later stage chlorination kettle, feeds chlorine...

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Abstract

The invention relates to a method of producing chlorinated paraffin-70 through low temperature catalysis and belongs to the technical field of synthesis of producing chlorinated paraffin-70 through low temperature catalysis. The method particularly includes: (1) feeding solid paraffin into a reaction kettle, and when the solid paraffin is molten completely, pressing the molten paraffin into a prefabricating kettle to perform a photo-induced reaction; (2) adding first and second additives to the molten paraffin; (3) feeding chlorine to perform early chlorination reaction; (4) according to the content of chlorine in the chlorinated paraffin, stepwise adding third and fourth additives, and performing a chlorination reaction; (5) after the reaction is finished, performing acid removal, water washing, addition of a stabilizer, refining, cooling and crushing to obtain the chlorinated paraffin-70. The method has following advantages: (1) the pressure is controlled stepwisely in the reaction process and the additives are added stepwisely, so that the reaction rate is increased, reaction temperature is reduced, reaction time is shortened and product quality is improved; (2) the method greatly reduces energy consumption than processes in the prior art.

Description

technical field [0001] The invention belongs to the technical field of synthesizing chlorinated paraffin, in particular to a method for catalytically producing chlorinated paraffin-70 at low temperature. Background technique [0002] Chlorinated paraffin-70 (also known as chlorowax-70, chlorocarbon-70.CP-70)) is a good short, flat, fast fine chemical product. Chlorinated alkanes mainly produced by chlorination of C10-C30 paraffin n-alkanes. The research and development of chlorocarbons began abroad in the 1950s, and was industrialized in Europe in 1936, and has been developed to this day. The annual output of chlorocarbons in the world is about 300,000 tons or more; there are more than 20 varieties (chlorine content from 13 to 74). At present, the main industrial countries that produce chlorocarbons are the United States, Britain, Germany, France, and Japan. Moreover, West Germany and others have realized the continuous production of chlorocarbons as early as the early 19...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G73/38B01J19/12
CPCB01J19/12C10G73/38
Inventor 王修福张桂新
Owner 山东沾化阳光化学有限公司
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