Hybrid post-combustion CO2 capture system and method
AssigneeUniversity of Kentucky Research Foundation
InventorKunlei Liu
Life of this patent
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Abstract
A hybrid post-combustion carbon dioxide capture system for capturing carbon dioxide from a flue gas includes a compressor adapted to produce a compressed flue gas stream, a membrane-based carbon dioxide separation unit configured to receive a first portion of the compressed flue gas stream from the compressor, and an aqueous-based carbon dioxide capture unit configured to receive a second portion of the compressed flue gas stream from the compressor whereby the compressed flue gas stream is processed in parallel by the membrane-based carbon dioxide separation unit and the aqueous-based carbon dioxide capture unit.
Claims15
A hybrid post-combustion carbon dioxide capture system for capturing carbon dioxide from a flue gas, comprising:
- a compressor adapted to produce a compressed flue gas stream at a compression rate determined by external electricity demand;
- a membrane-based carbon dioxide separation unit configured to receive a first portion of the compressed flue gas stream from the compressor;
- and
- an aqueous-based carbon dioxide capture unit configured to receive a second portion of the compressed flue gas stream from the compressor whereby the compressed flue gas stream is processed in parallel by the membrane-based carbon dioxide separation unit and the aqueous-based carbon dioxide capture unit wherein the membrane-based carbon dioxide separation unit and the aqueous-based carbon dioxide capture unit are configured to operate without recycling any recovered carbon dioxide removed from the compressed flue gas stream to the compressor, the membrane-based carbon dioxide separation unit and the aqueous-based carbon dioxide capture unit.
The hybrid post-combustion carbon dioxide capture system, further including a flow control valve for directing the first portion of the compressed flue gas stream to the membrane-based carbon dioxide separation unit.
A method of capturing carbon dioxide from a flue gas, comprising:
- compressing the flue gas into a compressed flue gas stream at a compression rate determined by external electricity demand;
- delivering a first portion of the flue gas stream to a membrane-based carbon dioxide separation unit;
- delivering a second portion of the compressed flue gas stream to aqueous-based carbon dioxide capture unit;
- and
- processing the compressed flue gas stream in parallel in the membrane-based carbon dioxide separation unit and the aqueous-based carbon dioxide capture unit without recycling any carbon dioxide removed from the compressed flue gas stream to the compressor, the membrane-based carbon dioxide separation unit and the aqueous-based carbon dioxide capture unit.
Dependencies are inferred from the claim text.