Fluor Corporation

Floor Corporation

Carl L Mariz

Jeffrey Scherffius

Peter Condorelli

Ray Won

A recovery plant for recovery of a gaseous component from a process gas has an absorber employing a lean solvent and a semi-lean solvent that absorb the gaseous component from the process gas, thereby producing a rich solvent, a semi-rich solvent, and a lean process gas. A regenerator extracts the gaseous component from the rich solvent, thereby regenerating the lean solvent and the semi-lean solvent. A solvent flow control element combines at least part of the semi-rich solvent and the semi-lean solvent to form a mixed solvent, and a cooler cools the mixed solvent that is subsequently fed into the absorber. In a method of removing a gaseous component from a process gas, a stream of lean solvent and a stream of semi-lean solvent are provided. In another step, the stream of lean solvent and the stream of semi-lean solvent contact the process gas in an absorber to produce a stream of semi-rich solvent and rich solvent. In a further step, at least part of the stream of semi-rich solvent and semi-lean solvent are combined to form a mixed solvent stream, and a cooler cools the mixed solvent stream, which is introduced into the absorber to absorb the gaseous component.

Split-flow process and apparatus

A recovery plant for recovery of a gaseous component, such as carbon dioxide, from a process gas, such as the exhaust from a combustion turbine, has an absorber ( ) employing a lean solvent ( ) in an upper section of the absorber and a semi-lean solvent ( ) in a lower section of the absorber. A regenerator ( ) extracts the gaseous component from the rich solvent ( ) thereby producing a regenerated lean solvent ( ) and a semi-lean solvent ( ). A solvent flow control element ( ) combines at least a part of the semi-rich solvent ( ) from the upper section of the absorber with the semi-lean solvent ( ) from the regenerator to form a mixed solvent ( ), and a cooler ( ) cools the mixed solvent that is subsequently fed into the lower section of the absorber ( ). By cooling the mixed solvent prior to entry into the absorber, the thermal energy required to remove the carbon dioxide from the exhaust gas can be reduced.

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Irvine, CA, United States of America

Carl L Mariz