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A method and equipment for clean and environmentally friendly production of 1,1',2,3-tetrachloropropene

A tetrachloropropene, clean and environmentally friendly technology, applied in the chemical industry, can solve the problems of complex procedures and difficult large-scale production, and achieve the effects of simple process flow, cost saving, and simple solid waste treatment

Active Publication Date: 2021-07-09
安庆市华璞环保材料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the reaction raw material 1,1,1,2,3-pentachloropropane described in this document requires multiple steps and can only be prepared under harsh reaction conditions such as ultraviolet radiation. The process is complicated and it is difficult to form a large-scale production

Method used

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  • A method and equipment for clean and environmentally friendly production of 1,1',2,3-tetrachloropropene
  • A method and equipment for clean and environmentally friendly production of 1,1',2,3-tetrachloropropene
  • A method and equipment for clean and environmentally friendly production of 1,1',2,3-tetrachloropropene

Examples

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Effect test

Embodiment 1

[0058] A method for clean and environment-friendly production of 1,1',2,3-tetrachloropropene, comprising the steps of:

[0059] S1. Use nitrogen to replace the air in the No. 1 high-pressure reactor. The pressure in the No. 1 high-pressure reactor is controlled at 0.3 MPa each time, and the operation is repeated three times; The pressure in the reactor is 0.2MPa;

[0060] S2, carbon tetrachloride is added in the No. 1 autoclave of step S1, then add catalyst, cocatalyst, wherein, catalyst adopts Fe / FeCl 3 For the catalyst system, the co-catalyst is phosphoric acid ester, preferably phosphoric acid methacrylate. In addition, the weight ratio of the catalyst to the co-catalyst is 3:1. Close the lid of the autoclave tightly, feed nitrogen gas until the internal pressure of the No. 1 autoclave is 0.3MPa, and let the autoclave stand for 30 minutes to ensure that the No. 1 autoclave does not leak. ; After making the electric heating jacket of No. 1 autoclave be warming up to 65 ℃, ...

Embodiment 2

[0069] A method for clean and environment-friendly production of 1,1',2,3-tetrachloropropene, comprising the steps of:

[0070] S1. Use nitrogen to replace the air in the No. 1 high-pressure reactor. The pressure in the No. 1 high-pressure reactor is controlled at 0.5 MPa each time, and the operation is repeated three times; The pressure in the reactor is 0.4MPa;

[0071] S2, carbon tetrachloride is added in the No. 1 autoclave of step S1, then add catalyst, cocatalyst, wherein, catalyst adopts Fe / FeCl 3 For the catalyst system, the co-catalyst is phosphoric acid ester, preferably phosphoric acid methacrylate. In addition, the weight ratio of the catalyst to the co-catalyst is 5:1. Close the lid of the autoclave tightly, feed nitrogen gas until the internal pressure of the No. 1 autoclave is 0.5 MPa, and let the autoclave stand for 30 minutes to ensure that the No. 1 autoclave does not leak. ; After making the electric heating jacket of No. 1 autoclave be warming up to 80 ℃,...

Embodiment 3

[0080] A method for clean and environment-friendly production of 1,1',2,3-tetrachloropropene, comprising the steps of:

[0081] S1. Use nitrogen to replace the air in the No. 1 high-pressure reactor. The pressure in the No. 1 high-pressure reactor is controlled at 0.4MPa each time, and the operation is repeated three times; The pressure in the reactor is 0.3MPa;

[0082] S2, carbon tetrachloride is added in the No. 1 autoclave of step S1, then add catalyst, cocatalyst, wherein, catalyst adopts Fe / FeCl 3 For the catalyst system, the co-catalyst is phosphoric acid ester, preferably phosphoric acid methacrylate. In addition, the weight ratio of the catalyst to the co-catalyst is 4:1. Close the lid of the autoclave tightly, feed nitrogen gas until the internal pressure of the No. 1 autoclave is 0.4MPa, and let the autoclave stand for 30 minutes to ensure that the No. 1 autoclave does not leak. ; After the electric heating jacket of No. 1 autoclave is warmed up to 75 ℃, pass into...

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Abstract

The invention discloses a clean and environment-friendly method for producing 1,1',2,3-tetrachloropropene, comprising the following steps: under the premise of nitrogen pressure protection, adding carbon tetrachloride, chlorine Ethylene, and use the catalyst, co-catalyst to catalyze the reaction to obtain the mixture; put the above mixture in the No. With the mol ratio of nitrogen, catalytic reaction obtains tetrachloropropene mixture; With above-mentioned tetrachloropropene mixture, in No. three autoclaves, with FeFeCl 3 As a catalyst, the product 1,1',2,3-tetrachloropropene is obtained by controlling the reaction temperature. The invention also discloses special equipment. The technological process of the present invention is simple, the equipment requirement is relatively low, and is beneficial to industrialization promotion.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a method and equipment for clean and environment-friendly production of 1,1',2,3-tetrachloropropene. Background technique [0002] At present, in the 1,1',2,3-tetrachloropropene intermediate market, the country mainly relies on imports from abroad, which causes enterprises such as pesticides, air conditioners, refrigerators, and refrigerators to spend high costs to order 1,1' from abroad ,2,3-Tetrachloropropene. The core technology in the field of 1,1',2,3-tetrachloropropene synthesis method is in the hands of large foreign companies such as Dupont, Honeywell, Daikin Industries, etc., while domestic resources in this industry are poorly mastered and understood, which seriously hinders The pace of development of the pesticide wild tricamba and the refrigeration industry. [0003] At present, the only domestic producer of 1,1',2,3-tetrachloropropene is Zhejiang Quhua Fl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C17/25C07C17/358C07C21/067
CPCC07C17/25C07C17/26C07C17/278C07C17/358C07C21/067C07C19/01
Inventor 许超齐正斌陈向莹高征南
Owner 安庆市华璞环保材料科技有限责任公司
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