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.:
Date of Patent:
Jan. 10, 2023
Filed:
Apr. 17, 2019
Applicant:
Nova Chemicals (International) S.a., Fribourg, CH;
Inventors:
Assignee:
NOVA Chemicals (International) S.A., Fribourg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 2/32 (2006.01); B01J 8/10 (2006.01); B01J 19/18 (2006.01); C07C 2/36 (2006.01); B01J 14/00 (2006.01); B01J 19/00 (2006.01);
U.S. Cl.
CPC ...
C07C 2/32 (2013.01); B01J 8/10 (2013.01); B01J 14/00 (2013.01); B01J 19/002 (2013.01); B01J 19/0066 (2013.01); B01J 19/18 (2013.01); C07C 2/36 (2013.01); B01J 2208/00867 (2013.01); B01J 2219/00033 (2013.01); B01J 2219/0099 (2013.01); B01J 2219/00247 (2013.01); B01J 2219/00252 (2013.01); C07C 2531/14 (2013.01); C07C 2531/22 (2013.01); C07C 2531/24 (2013.01); C07C 2531/34 (2013.01);
Abstract
This invention relates to a self cleaning reactor and to a process for the oligomerization of ethylene that employs a self-cleaning reactor. The reactor includes a mass of inert, particulate cleaning bodies that are entrained by the liquid in the reactor and scour the internal surfaces of the reactor during normal operation. This scouring action reduces the level of fouling on the reactor surfaces. Foulant material (polyethylene) is removed from the process on a continuous basis but the cleaning bodies remain within the reactor.