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:
Dec. 25, 2001
Filed:
Dec. 23, 1999
Applicant:
Inventor:
John V. O'Brien, Shrewsbury, MA (US);
Assignee:
Chart, Inc., Mayfield Hts., OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 7/00 ; F25J 3/00 ;
U.S. Cl.
CPC ...
C07C 7/00 ; F25J 3/00 ;
Abstract
The olefin-hydrogen effluent vapor stream from a dehydrogenation process is separated by a cryogenic separation method utilizing a cryogenic separation system. The method does not require external refrigeration and reheats and portions an expander feed stream to extract energy and controls the warm end and cold end temperature differences in the primary heat exchanger to provide energy savings and economical operation and material use.