Southwest Research Institute

Aaron M McClung

Klaus Brun

Rebecca A Owston

The systems and methods described herein reduce relatively high pressure supercritical COto a relatively low-pressure supercritical COusing a first COexpansion system positioned upstream of the thermal input system. The relatively low-pressure supercritical COpasses through the thermal input system and into a second COexpansion system. The first supercritical COexpansion system provides a first power output and/or the second COexpansion system provides a second power output. A COcompressor system converts the gaseous COexiting the second COexpansion system to the relatively high-pressure supercritical CO, at least a portion of which is returned to the first COexpansion system.

Intermediate pressure supercritical COpower cycle

An oxy-combustor is provided which comprises a combustion vessel including at least one solid fuel slurry inlet port, at least one oxygen inlet port and at least one supercritical fluid inlet port, wherein the combustion vessel is operable at an operating pressure of at least 1,100 psi; an interior of the combustion vessel comprises a combustion chamber and a supercritical fluid infusion chamber surrounding at least a part of the combustion chamber, the supercritical fluid infusion chamber and the combustion chamber are separated by a porous liner surrounding the combustion chamber, and the supercritical infusion chamber is located between the porous liner and an outer casing of the combustion vessel.

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San Antonio, TX, United States of America

Aaron M McClung