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. 22, 1998
Filed:
May. 06, 1997
Dennis G Alexion, Succasunna, NJ (US);
Constantine A Coulaloglou, Mendham, NJ (US);
Exxon Research and Engineering Company, Florham Park, NJ (US);
Abstract
In a hydrocarbon synthesis process, nitrogen is cryogenically removed from natural gas to produce a synthesis gas feed comprising methane which is substantially free of nitrogen. This feed is converted to a synthesis gas comprising a mixture of H.sub.2 and CO which is substantially free of the HCN and NH.sub.3 hydrocarbon synthesis catalyst deactivating nitrogen species. This reduces the need for rejuvenating the hydrocarbon synthesis catalyst. During the cryogenic separation, C.sub.2+ hydrocarbons are separated from the natural gas and all or a portion of the separated C.sub.2 -C.sub.4 hydrocarbons are added to the methane feed before it is converted into syngas, to increase syngas production. All or a portion of the separated C.sub.2 -C.sub.3 hydrocarbons may be removed as LPG.