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:
Oct. 12, 1993
Filed:
Jun. 01, 1992
Applicant:
Inventors:
Keith W Hovis, Bartlesville, OK (US);
Henry K Hachmuth, Bartlesville, OK (US);
Michael L Gray, Spartanburg, SC (US);
Assignee:
Phillips Petroleum Company, Bartlesville, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05D / ;
U.S. Cl.
CPC ...
422106 ; 422108 ; 422110 ;
Abstract
A process and apparatus for recovering propane product from HF alkylation process that is substantially free of HF acid. The invention allows for the improvement in the operation of an HF alkylation propane stripper by utilizing a bottoms recycle stream.