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:
Sep. 30, 2014
Filed:
Jul. 24, 2009
Clarence P. Stadlwieser, Sherwood Park, CA;
Bernie B. Osborne, Hurricane, WV (US);
John P. Dever, Kenner, LA (US);
Harvey E. Andresen, Luling, LA (US);
Michael L. Hutchison, Poca, WV (US);
Steven R. Osborne, Luling, LA (US);
Liping L. Zhang, Hurricane, WV (US);
Michael Habenschuss, South Charleston, WV (US);
Andrew Addie, Louisville, KY (US);
Donald R. Culp, Baltimore, MD (US);
Clarence P. Stadlwieser, Sherwood Park, CA;
Bernie B. Osborne, Hurricane, WV (US);
John P. Dever, Kenner, LA (US);
Harvey E. Andresen, Luling, LA (US);
Michael L. Hutchison, Poca, WV (US);
Gary L. Culp, Kenna, WV (US);
Steven R. Osborne, Luling, LA (US);
Liping L. Zhang, Hurricane, WV (US);
Michael Habenschuss, South Charleston, WV (US);
Andrew Addie, Louisville, KY (US);
Dow Technology Investments LLC, Midland, MI (US);
Abstract
Processes and systems for purifying ethylene oxide, including introducing a feed stream including ethylene oxide to a heat exchanger to heat the feed stream, feeding the heated feed stream to a distillation apparatus base below a first stage, removing from the distillation apparatus an impurity fraction as a top exit stream from the distillation apparatus located at a top take-off on the distillation apparatus, removing from the distillation apparatus an ethylene oxide stream of 99.7 weight percent purity, based on the total weight of the ethylene oxide stream, from the distillation apparatus, and removing from the distillation apparatus an aldehyde enriched fraction as a bottom stream from the distillation apparatus, where the aldehyde enriched fraction is fed directly to a glycol reactor.