Invention Grant
- Patent Title: Process and apparatus for the gas-phase polymerization of olefins
- Patent Title (中): 烯烃气相聚合的方法和装置
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Application No.: US13822156Application Date: 2011-09-02
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Publication No.: US09073027B2Publication Date: 2015-07-07
- Inventor: Silvia Soffritti , Riccardo Rinaldi , Maurizio Dorini , Giuseppe Penzo
- Applicant: Silvia Soffritti , Riccardo Rinaldi , Maurizio Dorini , Giuseppe Penzo
- Applicant Address: IT Milan
- Assignee: Basell Poliolefine Italia S.r.l.
- Current Assignee: Basell Poliolefine Italia S.r.l.
- Current Assignee Address: IT Milan
- Priority: EP10175919 20100909
- International Application: PCT/EP2011/065210 WO 20110902
- International Announcement: WO2012/031986 WO 20120315
- Main IPC: C08F2/34
- IPC: C08F2/34 ; B01J8/12 ; B01J19/24 ; B01J8/00 ; B01J8/18 ; B01J8/38 ; B01J8/44 ; C08F10/02 ; C08F210/06 ; C08F110/06
Abstract:
A gas-phase polymerization reactor having interconnected polymerization zones comprising:—a riser through which the polymer particles flow upwards under fast fluidization conditions or transport conditions;—a downcomer through which the polymer particles flow downward in a densified form under the action of gravity, the bottom of said downcomer being connected to the lower region of said riser by means of a transport section, said transport section being designed as a bend descending from the downcomer to the riser.
Public/Granted literature
- US20130165605A1 PROCESS AND APPARATUS FOR THE GAS-PHASE POLYMERIZATION OF OLEFINS Public/Granted day:2013-06-27
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