Method of and apparatus for CO 2 capture in oxy-combustion

Details Method of and apparatus for CO 2 capture in oxy-combustion Method of and apparatus for CO 2 capture in oxy-combustion

2011-04-19

2011-04-19

Mayes, Melvin C (Department: 1732)

Chemistry of inorganic compounds

Modifying or removing component of normally gaseous mixture

Carbon dioxide or hydrogen sulfide component

C060S649000

Reexamination Certificate

active

07927568

ABSTRACT:
A method of and an apparatus for capturing CO2from flue gas emanating from a carbonaceous fuel combusting power plant, which includes a source of oxygen and a combustion chamber for combusting the fuel with oxygen and thereby producing flue gas that includes CO2, water and excess oxygen as its main components. At least a portion of the flue gas is compressed to a pressure higher than about sixty bar, the compressed flue gas is cooled in a primary CO2separating unit for capturing a first portion of the CO2by condensing it to produce a liquid CO2stream and a high pressure vent gas stream that includes oxygen and excess CO2, the liquid CO2stream is discharged from the power plant, and the high pressure vent gas stream is conducted to a secondary CO2separating unit for capturing a second portion of the CO2by adsorbing it to an adsorbing material.

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