US 2015/0089949 A1Published application

Closed loop supercritical carbon dioxide power cycle

AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude

InventorBruce Eng

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Abstract

One embodiment of a closed loop supercritical carbon dioxide power generation process is provided. This process includes Indirectly exchanging heat between a hot gas stream and a warm supercritical carbon dioxide stream, expanding the heated supercritical carbon dioxide stream in a turbine, indirectly exchanging heat from the expanded supercritical carbon dioxide stream in a high temperature recuperator, thereby a cooled, expanded supercritical carbon dioxide steam, splitting the cooled, expanded supercritical carbon dioxide stream into a first stream and a second stream, compressing the first stream in a main compressor, and introducing the compressed first stream into the low temperature recuperator, and compressing the second stream in a recompressor, combining the compressed second stream with the heated first stream, and introducing the combined stream into the high temperature recuperator, wherein it indirectly exchanges heat with expanded supercritical carbon dioxide stream, thereby producing the warm supercritical carbon dioxide stream.

Claims7

Dependent claims

A closed loop supercritical carbon dioxide power generation process, comprising:

indirectly exchanging heat between a hot gas stream (101) and a warm supercritical carbon dioxide stream (104),
expanding the heated supercritical carbon dioxide stream (105) in a turbine (106)
indirectly exchanging heat (108, 110) from the expanded supercritical carbon dioxide stream (107) in a high temperature recuperator (108) and the a temperature recuperator (110), thereby producing a cooled, expanded supercritical carbon dioxide steam (111),
splitting the cooled, expanded supercritical carbon dioxide stream (111) into a first stream (112) and a second stream (113),
compressing the first stream (112) in a main compressor (116), and introducing the compressed first stream into the low temperature recuperator (110), and
compressing the second stream (113) in a recompressor (118), combining the compressed second stream with the heated first stream, and introducing the combined stream into the high temperature recuperator (108), wherein it indirectly exchanges heat with expanded supercritical carbon dioxide stream (107), thereby producing the warm supercritical carbon dioxide stream (104)

3 more elements

Dependencies are inferred from the claim text.