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. 02, 2003
Filed:
Nov. 20, 2001
Knut Ingvar Åsen, Porsgrunn, NO;
Dag Arne Eimer, Porsgrunn, NO;
Norsk Hydro Asa, Oslo, NO;
Abstract
The present invention relates to a method for removing and recovering CO from exhaust gas from a power and/or heat generating plant (a main power plant) by chemical absorption and desorption respectively, where the exhaust gas is fed to an absorber using a chemical absorbent where the CO is absorbed in said absorbent and a CO -depleted exhaust gas stream is formed. The CO rich absorbent is further fed to a desorber where CO is removed from the absorbent, and the absorbent essentially free of CO is recirculated to the absorber and desorbed CO gas is discharged off. The exhaust gas is cooled and recompressed to an elevated pressure, in a compressor in a secondary power plant integrated with the main power plant, said absorber, and said desorber, before entering the absorber. The CO -depleted exhaust gas emerging from the absorber is reheated and further expanded in an expander in said secondary power plant.