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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 9598514 B1

PDFFull Text
Date of Patent:
Mar. 21, 2017

Filed:

Feb. 03, 2016

Component separations in polymerization

Applicant:

Chevron Phillips Chemical Company Lp, The Woodlands, TX (US);

Inventors:

Scott E. Kufeld, Houston, TX (US);

John D. Hottovy, Porter, TX (US);

Ai-fu Chang, Humble, TX (US);

Assignee:

Chevron Phillips Chemical Company LP, The Woodlands, TX (US);

Attorneys:

Conley Rose, P.C.

Rodney B. Carroll

Monte Rhodes

Primary Examiner:

Fred M Teskin

Int. Cl.
CPC ...
C08F 110/02 (2006.01); B01J 19/24 (2006.01); B01D 53/14 (2006.01); C07C 4/02 (2006.01); C07C 4/06 (2006.01); C07C 5/32 (2006.01); C07C 7/04 (2006.01); C07C 7/11 (2006.01); C08J 11/04 (2006.01); C07C 7/00 (2006.01); C08F 6/00 (2006.01); C08F 6/04 (2006.01); C08L 23/04 (2006.01); C08F 10/02 (2006.01);
U.S. Cl.
CPC ...
C08F 110/02 (2013.01); B01D 53/1487 (2013.01); B01D 53/1493 (2013.01); B01J 19/245 (2013.01); C07C 4/02 (2013.01); C07C 4/06 (2013.01); C07C 5/32 (2013.01); C07C 7/005 (2013.01); C07C 7/04 (2013.01); C07C 7/11 (2013.01); C08F 6/001 (2013.01); C08J 11/04 (2013.01); B01D 2252/20405 (2013.01); B01D 2252/20421 (2013.01); B01D 2252/20431 (2013.01); B01D 2252/20436 (2013.01); B01D 2252/20468 (2013.01); B01D 2252/504 (2013.01); B01D 2257/7022 (2013.01); B01J 2219/24 (2013.01); C08F 10/02 (2013.01); Y02P 30/464 (2015.11);
Abstract

A process for component separation in a polymer production system, comprising separating a polymerization product stream into a gas stream and a polymer stream, wherein the gas stream comprises ethane and unreacted ethylene, distilling the gas stream into a light hydrocarbon stream, wherein the light hydrocarbon stream comprises ethane and unreacted ethylene, contacting the light hydrocarbon stream with an absorption solvent system, wherein at least a portion of the unreacted ethylene from the light hydrocarbon stream is absorbed by the absorption solvent system, and recovering a waste gas stream from the absorption solvent system, wherein the waste gas stream comprises ethane, hydrogen, or combinations thereof.

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