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Title:
ENHANCED REACTION SYSTEM AND METHOD FOR PREPARING POLYPROPYLENE BY MEANS OF SLURRY PROCESS
Document Type and Number:
WIPO Patent Application WO/2021/253312
Kind Code:
A1
Abstract:
An enhanced reaction system and method for preparing polypropylene by means of a slurry process. The enhanced reaction system comprises: a prepolymerization reactor (10) and a polymerization reactor (20), which are connected in order. The prepolymerization reactor (10) is provided with a prepolymerization micro-interface generator (101) used for dispersing and crushing a material into micro-bubbles, and the polymerization reactor (20) is provided with a micro-interface generator set. A polymerization reaction product outlet (2020) is provided at the bottom of the polymerization reactor (20), and the polymerization reaction product outlet (2020) is connected to a flash tank (40) for flash evaporation of the polymerization reaction product. A first gas phase outlet (4010) is provided at the top of the flash tank (40), and a material discharged from the first gas phase outlet (4010) is introduced into a pre-washing tower (50) for washing and impurity removal. By means of the arrangement of the prepolymerization micro-interface generator (101) on the prepolymerization reactor (10), and also by means of the arrangement of the micro-interface generator set on the polymerization reactor (20), the mass transfer area between a gas phase material and a liquid phase material is increased, the reaction efficiency is improved, and the energy consumption is reduced; in addition, the temperature and pressure inside the polymerization reactor (20) are reduced, and the safety and stability of the whole system are improved.

Inventors:
ZHANG ZHIBING (CN)
ZHOU ZHENG (CN)
ZHANG FENG (CN)
LI LEI (CN)
MENG WEIMIN (CN)
WANG BAORONG (CN)
YANG GAODONG (CN)
LUO HUAXUN (CN)
YANG GUOQIANG (CN)
TIAN HONGZHOU (CN)
CAO YU (CN)
Application Number:
PCT/CN2020/096739
Publication Date:
December 23, 2021
Filing Date:
June 18, 2020
Export Citation:
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Assignee:
NANJING YANCHANG REACTION TECH RESEARCH INSTITUTE CO LTD (CN)
International Classes:
C08F10/06; C08F2/01
Foreign References:
CN101613426A2009-12-30
CN210045217U2020-02-11
CN210045215U2020-02-11
CN110527008A2019-12-03
CN110002993A2019-07-12
CN210674823U2020-06-05
CN111217671A2020-06-02
CN110591763A2019-12-20
CN109776702A2019-05-21
CN1410456A2003-04-16
JP2017222735A2017-12-21
Attorney, Agent or Firm:
BEIJING ZHONGSUO INTELLECTUAL PROPERTY AGENCY CO. LTD (CN)
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