Carbon dioxide capturing device and carbon dioxide capturing method
AssigneesSamsung Electronics Co., Ltd., Iucf-Hyu (Industry-University Cooperation Foundation Hanyang University)
InventorsHyoungwoo Choi, Jin-Kuk Kim, Jonggeun Seong, Jinkyu Kang, Sungwon Hong, Se-Jung Kim, Yongjae Song
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Abstract
Provided are a carbon dioxide capturing device and method. A gas mixture including carbon dioxide gas is separated into a CO2-depleted first gas by permeating a nitrogen-selective separation membrane module and CO2-enriched second gas. The second gas is supplied to a low-temperature sublimator, heat-exchanged with a refrigerant of a refrigerant-based cooling system, and cooled to a second temperature. The carbon dioxide gas included in the second gas is sublimated and separated into solid-phase carbon dioxide and third gas.
Claims20
A carbon dioxide capturing method comprising:
- directing a gas mixture comprising carbon dioxide gas to a separator including a nitrogen-selective separation membrane module,
- wherein the nitrogen-selective separation membrane module separates the gas mixture into a CO2-depleted first gas and a CO2-enriched second gas;
- directing the CO2-enriched second gas to a low-temperature sublimator to provide solid-phase carbon dioxide and a third gas, by cooling the CO2-enriched second gas to a first temperature by heat exchange with a refrigerant of a first refrigerant-based cooling system;
- and
- isolating the carbon dioxide gas from the solid phase by sublimation.
A carbon dioxide capturing device comprising:
- a compressor configured to compress a gas mixture comprising carbon dioxide to about 1.2 bars to about 5 bars;
- a separator comprising a nitrogen-selective separation membrane module to separate the gas mixture into a CO2-depleted first gas and a CO2-enriched second gas, wherein the CO2-depleted first gas permeates the nitrogen-selective separation membrane module;
- a first refrigerant-based cooling system;
- and
- a low-temperature sublimator configured to separate the CO2-enriched second gas into solid-phase carbon dioxide and a third gas by cooling the CO2-enriched second gas to about 120° C. to about −90° C. through heat exchange with a refrigerant of the first refrigerant-based cooling system and isolating the carbon dioxide.
Dependencies are inferred from the claim text.