Process for preparing 1,1,2 trichloroethylane

A technology of trichloroethane and vinyl chloride, applied in the direction of halogen addition preparation, organic chemistry, etc., can solve the problems of reduced reaction selectivity, uneven temperature distribution, complicated production process, etc., and achieves convenient operation and simple equipment structure , Ease of promotion and use

Active Publication Date: 2006-06-28
SHANGHAI CHLOR ALKALI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Many documents and patents disclose the method for preparing 1,1,2 trichloroethane, such as the patent (publication number: CN1440959) applied by Japan Kureha Chemical Industry Co., Ltd. in China, which discloses a preparation method in the presence of a catalyst. The method of 1,1,2 trichloroethane, an obvious defect of the technology disclosed in this patent is that it needs a catalyst. Due to the use of the catalyst, it not only increases the cost, but also

Method used

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  • Process for preparing 1,1,2 trichloroethylane

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Embodiment 1

[0025] With 1,1,2 trichloroethane as the circulating medium, it is sent into the first mixing injection device 1, and vinyl chloride is sucked into the mixing area of ​​the first mixing injection device 1 through the vinyl chloride inlet 101 of the first mixing injection device 1 , then 1,1,2 trichloroethane and vinyl chloride are sent into the second mixing injection device 2, chlorine gas is sucked into the mixing zone of the second mixing injection device 2 through the chlorine gas inlet 201 of the second mixing injection device 2, in In the mixing zone of the second mixing injection device 2, vinyl chloride and chlorine gas are mixed for pre-reaction, and then enter the main pipeline reactor 3 equipped with static mixing components for reaction to generate 1, 1, 2 trichloroethane, and the reacted product is , after flowing out from the main pipeline reactor 3 equipped with static mixing components, the unreacted gas is separated by the gas-liquid separator 4, and enters the...

Embodiment 2

[0036] Adopt the same flow process and method as embodiment 1, wherein:

[0037] Reaction process conditions

[0038] Feed amount of vinyl chloride: 8.3NM 3 / H

[0039] Chlorine feed rate: 8.9NM 3 / H

[0040] 1, 1, 2 trichloroethane liquid circulation volume: 6M 3 / H

[0041] Empty pipe liquid velocity: 0.85m / s

[0042] Dwell time: 7.1s

[0043] Reaction temperature: 50~55℃

[0044] Response result

[0045] 1,1,2 trichloroethane output: 48.5Kg / H (converted into 1,1,2 trichloroethane 100%wt) The conversion rate of vinyl chloride is greater than 99%, and the selectivity of vinyl chloride is greater than 98%.

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Abstract

The invention discloses a method to make 1,1,2 trichloroethane. It includes the following steps: using 1,1,2 trichloroethane as circling medium sending to the first mixing spraying device, the vinyl chloride would be absorbed into the first mixing area of the first mixing spraying device through, and vinyl chloride dissolving in the 1,1,2 trichloroethane would be sent to the second spaying device, and the chlorine would be absorbed at the mixing area of the second mixing spraying device. The vinyl chloride would take reaction with chloride in the mixing area of the second mixing spraying device and coming into the main channel reactor to continue reacting to form 1,1,2 trichloroethane, the result would be separated in the separator and coming into the post section. The invention is simple structure, easy to operate, and the conversion of vinyl chloride could reach to 98%.

Description

technical field [0001] The present invention relates to a method for preparing 1,1,2 trichloroethane. Background technique [0002] 1,1,2 Trichloroethane is an important chemical raw material, which can be used to prepare chemical products such as vinylidene chloride. 1, 1, 2 trichloroethane is generally a chlorinated product of vinyl chloride and chlorine gas. The reaction equation is: [0003] <chemistry num="001"> <chem file="200510111981_cml001.xml" / > < / chemistry> [0004] Many documents and patents disclose the method for preparing 1,1,2 trichloroethane, such as the patent (publication number: CN1440959) applied by Japan Kureha Chemical Industry Co., Ltd. in China, which discloses a preparation method in the presence of a catalyst. The method of 1,1,2 trichloroethane, an obvious defect of the technology disclosed in this patent is that a catalyst is required, and the use of the catalyst not only increases the cost, but also leads to a relatively...

Claims

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Application Information

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IPC IPC(8): C07C17/04C07C19/05
Inventor 袁向前袁茂全胡妹华宋宏宇陈斌武陆林军
Owner SHANGHAI CHLOR ALKALI CHEM
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