Title:
CONTINUOUS PREPARATION SYSTEM AND METHOD FOR VINYLIDENE CHLORIDE
Document Type and Number:
WIPO Patent Application WO/2022/135562
Kind Code:
A1
Abstract:
The present invention provides a continuous preparation system and method for vinylidene chloride. In the present invention, by coupling two stages of supergravity reactors, the product vinylidene chloride and water vapor are distilled from a reaction system in form of an azeotrope by using a water vapor steam stripping method, and the product obtained using the method has high purity; in addition, due to coordination between steam stripping and supergravity, trichloroethane and an alkali solution are rapidly mixed and subjected to mass transfer, and the product vinylidene chloride is rapidly distilled from the reaction system in form of the azeotrope (based on rapid diffusion of the water vapor), such that the reaction proceeds continuously toward the direction of generating vinylidene chloride, and the conversion rate is significantly increased; a test apparatus proves that, by means of the present invention, the purity of the vinylidene chloride product can be stabilized at 98% or more (mass fraction), the TOC value of chlorate wastewater is reduced to 100 mg/L or less, and the cost of material consumption and subsequent salt-containing wastewater treatment is reduced.
Inventors:
ZHANG LIANGLIANG (CN)
ZHOU LIYANG (CN)
CHU GUANGWEN (CN)
LIN JINYUAN (CN)
TONG JIHONG (CN)
CHEN JIANFENG (CN)
ZHANG YIDONG (CN)
WU ZHIGANG (CN)
YU YUNFEI (CN)
ZHOU LIYANG (CN)
CHU GUANGWEN (CN)
LIN JINYUAN (CN)
TONG JIHONG (CN)
CHEN JIANFENG (CN)
ZHANG YIDONG (CN)
WU ZHIGANG (CN)
YU YUNFEI (CN)
Application Number:
PCT/CN2021/141197
Publication Date:
June 30, 2022
Filing Date:
December 24, 2021
Export Citation:
Assignee:
ZHEJIANG QUZHOU JUSU CHEMICAL IND CO LTD (CN)
UNIV BEIJING CHEM TECH (CN)
JUHUA GROUP CO LTD (CN)
UNIV BEIJING CHEM TECH (CN)
JUHUA GROUP CO LTD (CN)
International Classes:
B01J19/00; B01J19/18; C07C17/25; C07C17/386; C07C21/08
Foreign References:
| CN112774591A | 2021-05-11 | |||
| CN106542596A | 2017-03-29 | |||
| CN108503519A | 2018-09-07 | |||
| CN107653002A | 2018-02-02 | |||
| CN108276251A | 2018-07-13 | |||
| CN1554627A | 2004-12-15 | |||
| CN107586256A | 2018-01-16 | |||
| US20050022666A1 | 2005-02-03 | |||
| CN200310122646A | 2003-12-22 | |||
| CN201780050736A | 2017-08-17 |
Attorney, Agent or Firm:
BEIJING JANLEA PATENT AGENCY CO., LTD. (CN)
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