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:
Nov. 18, 2014
Filed:
Dec. 28, 2006
Pritham Ramamurthy, Sugar Land, TX (US);
Pritham Ramamurthy, Sugar Land, TX (US);
Kellogg Brown & Root LLC, Houston, TX (US);
Abstract
Methods for pretreating feedstock for gasification are provided. At least a portion of a coal based feedstock stream can be combined with at least a portion of a supercritical carbon dioxide stream within a pretreatment system to provide a treated feedstock stream. At least a portion of the treated feedstock stream can be passed to a gasifier to produce a synthesis gas stream of less than 50% by volume carbon dioxide, at least 5% by volume carbon monoxide and at least 1% by volume hydrogen. At least a portion of the synthesis gas stream can be combusted to form an exhaust stream comprising carbon dioxide. At least a portion of the gasification byproduct stream can be purified and compressed to produce supercritical carbon dioxide. At least a portion of the supercritical carbon dioxide can be recycled to the pretreatment system via a supercritical carbon dioxide stream.