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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10941221 B1

PDFFull Text
Date of Patent:
Mar. 09, 2021

Filed:

Aug. 28, 2018

Method for producing polyolefin and polyolefin production system

Applicant:

Sumitomo Chemical Company, Limited, Tokyo, JP;

Inventors:

Satoshi Itoguchi, Ichihara, JP;

Naganjaneyulu Suruvu, Ichihara, JP;

Shunpei Funaoka, Ichihara, JP;

Assignee:

SUMITOMO CHEMICAL COMPANY, LIMITED, Tokyo, JP;

Attorney:

Panitch Schwarze Belisario & Nadel LLP

Primary Examiner:

Fred M Teskin

Int. Cl.
CPC ...
C08F 2/34 (2006.01); C08F 10/06 (2006.01); C08F 2/01 (2006.01); B01J 8/00 (2006.01); B01J 8/18 (2006.01); B01J 8/24 (2006.01); B01J 8/28 (2006.01); B01J 8/26 (2006.01); C08F 2/00 (2006.01);
U.S. Cl.
CPC ...
C08F 2/34 (2013.01); B01J 8/0055 (2013.01); B01J 8/1809 (2013.01); B01J 8/1818 (2013.01); B01J 8/1827 (2013.01); B01J 8/24 (2013.01); B01J 8/245 (2013.01); B01J 8/26 (2013.01); B01J 8/28 (2013.01); C08F 2/001 (2013.01); C08F 10/06 (2013.01); B01J 2208/00017 (2013.01); B01J 2208/00539 (2013.01); B01J 2208/00548 (2013.01); B01J 2208/00938 (2013.01); B01J 2219/00774 (2013.01);
Abstract

A polyolefin production system is provided. The polyolefin production system includes a plurality of gas-phase polymerization tanks configured to polymerize an olefin gas to form a polyolefin, a compressor comprising an inlet and an outlet and being configured to compress a an olefin-containing gas, an individual gas feed line disposed at each of the gas-phase polymerization tanks and configured to guide the gas fed from the outlet of the compressor to each of the gas-phase polymerization tanks, an individual gas discharge line disposed at each of the gas-phase polymerization tanks and discharging the gas from each of the gas-phase polymerization tanks, and a first valve installed in each of the individual gas feed lines.

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