Title:
PROPYLENE POLYMERIZATION METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/129432
Kind Code:
A1
Abstract:
Provided is a propylene polymerization method, comprising the following steps: 1) performing a pre-polymerization reaction: mixing and stirring a catalyst and liquid-phase propylene cooled to 5-10°C in a pre-polymerization reaction zone, and performing the pre-polymerization reaction, wherein the pre-polymerization reaction time is 12-17 min, and the pressure is 3.5-4.0 MPag; 2) performing a liquid-phase polymerization reaction: feeding a reaction material from the pre-polymerization reaction zone and newly supplemented monomers such as liquid-phase propylene, hydrogen, ethylene and butene into a liquid-phase polymerization reaction zone, and performing the liquid-phase polymerization reaction; and 3) performing a gas-phase polymerization reaction: feeding mixture material from the liquid-phase polymerization reaction zone to a gas-phase polymerization reaction zone, and performing the gas-phase polymerization reaction. A loop reactor is used as a liquid phase polymerization mode, and a horizontal stirring reactor is used as a gas phase polymerization mode. By means of the series operation of the two reactors, the production process is simplified, and homopolymerized polypropylene or random copolymerized polypropylene can be produced.
Inventors:
ZHENG BILEI (CN)
GAO JUN (CN)
YANG WEIDONG (CN)
FAN CHANGHAI (CN)
CHEN XIUPING (CN)
HONG RI (CN)
ZHOU YI (CN)
GAO JUN (CN)
YANG WEIDONG (CN)
FAN CHANGHAI (CN)
CHEN XIUPING (CN)
HONG RI (CN)
ZHOU YI (CN)
Application Number:
PCT/CN2020/135910
Publication Date:
July 01, 2021
Filing Date:
December 11, 2020
Export Citation:
Assignee:
ZHEJIANG SATELLITE ENERGY CO LTD (CN)
International Classes:
C08F10/06; C08F2/01; C08F110/06; C08F210/02; C08F210/04; C08F210/06; C08F210/08; C08F210/16
Foreign References:
| CN108794669A | 2018-11-13 | |||
| CN108976329A | 2018-12-11 | |||
| CN108586644A | 2018-09-28 | |||
| CN108794669A | 2018-11-13 | |||
| CN108976329A | 2018-12-11 | |||
| CN108586644A | 2018-09-28 | |||
| CN102020733A | 2011-04-20 | |||
| CN102816269A | 2012-12-12 | |||
| CN111116785A | 2020-05-08 | |||
| EP2316863A1 | 2011-05-04 |
Attorney, Agent or Firm:
HANGZHOU WUZHOU PUHUA PATENT AGENCY FIRM (SPECIAL GENERAL PARTNERSHIP) (CN)
Download PDF:
Previous Patent: COMBINED COOLING, HEATING AND POWER MICRO GAS TURBINE DEVICE
Next Patent: SHOCK ABSORPTION DEVICE FOR ROADHEADER FOR COAL MINE
Next Patent: SHOCK ABSORPTION DEVICE FOR ROADHEADER FOR COAL MINE