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:
Jul. 16, 2013
Filed:
Jul. 24, 2009
Russell J. Koveal, Baton Rouge, LA (US);
Russell J. Koveal, Baton Rouge, LA (US);
ExxonMobil Research and Engineering Company, Annandale, NJ (US);
Abstract
This invention relates to the desulfurization of a hydrocarbon feedstock by contacting said feedstock with an aqueous metal hydroxide solution, thus resulting in a desulfurized feedstock and an aqueous metal sulfide stream. In the present invention, the aqueous metal sulfide stream is split into at least three fractions and each fraction is passed to a different electrochemical cell, connected in series to regenerate the metal hydroxide required in the desulfurization process and recover sulfur, metal hydroxide, and hydrogen. In a preferred embodiment, at least a portion of the metal hydroxide that is produced in the electrochemical metal hydroxide regeneration process of the present invention is recycled for use in the process for desulfurizing the sulfur-containing hydrocarbon feedstock.