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. 20, 2016
Filed:
Nov. 18, 2013
Uop Llc, Des Plaines, IL (US);
Luigi Laricchia, Arlington Heights, IL (US);
Jonathan Andrew Tertel, Mt. Prospect, IL (US);
UOP LLC, Des Plaines, IL (US);
Abstract
Methods and apparatuses are provided for producing low sulfur propane and butane. The method includes reacting a mercaptan in a washed feed stream with a caustic stream to produce a mercaptan salt in a rich caustic stream and a hydrocarbon treated stream. The mercaptan salt in the rich caustic stream is reacted with oxygen and water to produce a mixed caustic/disulfide stream, and the caustic and disulfides in the mixed caustic/disulfide stream are separated to produce a disulfide stream and the caustic stream. The hydrocarbon treated stream is fractionated to produce a propane stream, a butane stream, and a C5+ stream.