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:
May. 22, 2012
Filed:
Jul. 24, 2009
John F. Szul, Hurricane, WV (US);
James H. Mccain, Charleston, WV (US);
Floyd L. Pfeffer, Midland, MI (US);
Harvey E. Andresen, Luling, LA (US);
Phillip R. Fairchild, Luling, LA (US);
Kent E. Newman, Scott Depot, WV (US);
John F. Szul, Hurricane, WV (US);
James H. Mccain, Charleston, WV (US);
Floyd L. Pfeffer, Midland, MI (US);
Harvey E. Andresen, Luling, LA (US);
Phillip R. Fairchild, Luling, LA (US);
Kent E. Newman, Scott Depot, WV (US);
Dow Technology Investments LLC, Midland, MI (US);
Abstract
Embodiments of the present disclosure include processes and systems for recovering alkylene oxide. System embodiments include a stripping section located in an alkylene oxide recovery column to convert a feed stream comprising to a first gas phase portion comprising alkylene oxide, a condensing zone comprising at least a first condenser and a second condenser configured in series, and a reabsorption region located in the alkylene oxide recovery column above the last of the at least two condensers.