Invention Grant
- Patent Title: Process for the polymerization of olefins
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Application No.: US15750956Application Date: 2016-07-27
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Publication No.: US10759883B2Publication Date: 2020-09-01
- Inventor: Yahya Banat , Ahmad Abdullah Alshaiban , Osamah Al-Humaidan
- Applicant: SABIC Global Technologies B.V.
- Applicant Address: NL Bergen op Zoom
- Assignee: SABIN GLOBAL TECHNOLOGIES B.V.
- Current Assignee: SABIN GLOBAL TECHNOLOGIES B.V.
- Current Assignee Address: NL Bergen op Zoom
- Agency: Cantor Colburn LLP
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@6c41f3c9
- International Application: PCT/EP2016/067901 WO 20160727
- International Announcement: WO2017/025330 WO 20170216
- Main IPC: C08F2/34
- IPC: C08F2/34 ; C08F10/06 ; B01J8/18 ; C08F110/06 ; C08F210/02 ; C08F10/02 ; C08F110/02 ; C08F210/06 ; C08F10/00 ; B01J8/08 ; C08F2/01 ; B01J8/20

Abstract:
The present invention relates to a process for the continuous preparation of a polyolefin in a reactor from one or more α-olefin monomers of which at least one is ethylene or propylene, wherein the reactor comprises a fluidized bed, an expanded section located at or near the top of the reactor, a distribution plate located at the lower part of the reactor and an inlet for a recycle stream located under the distribution plate wherein the process comprises—feeding a polymerization catalyst to the fluidized bed in the area above the distribution plate—feeding the one or more α-olefin monomers to the reactor—withdrawing the polyolefin from the reactor—circulating fluids from the top of the reactor to the bottom of the reactor, wherein the circulating fluids are compressed using a compressor and subsequently cooled using a heat exchanger to form a cooled recycle stream comprising liquid, and wherein the cooled recycle stream is introduced into the reactor using the inlet for the recycle stream wherein a part of the cooled recycle stream is drawn to form a liquid comprising stream, wherein the liquid comprising stream is introduced into the expanded section during at least part of the polymerization process, and wherein the liquid comprising stream is brought into contact with at least part of the interior surface of the expanded section.
Public/Granted literature
- US20180251582A1 PROCESS FOR THE POLYMERIZATION OF OLEFINS Public/Granted day:2018-09-06
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