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. 17, 2013
Filed:
Nov. 06, 2012
Bechtel Power Corporation, Frederick, MD (US);
Harvey Wen, Boyds, MD (US);
Charles L. Kimtantas, Sugar Land, TX (US);
Bechtel Power Corporation, Frederick, MD (US);
Abstract
The present invention relates to a method for combined SOand COremoval from flue gas, which includes removing both COand SOin a primary fractionation column and two polishing columns, the method comprising: a) hot flue as pretreatment, including flue gas SOremoval by dry sorbent injection; b) compressing the treated hot flue gas by a multi-stage compressor; c) separation of CO, SOand non-condensable gases; d) subjecting the COand SOto separate polishing columns; and e) combining streams from the primary fractionation column and the two polishing columns for power recovery.