CARBON DIOXIDE LIQUEFACTION DEVICE
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United States of America Patent
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Dec 3, 2015
app pub date -
Feb 25, 2013
filing date -
Feb 25, 2013
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Abstract
The present invention is equipped with: a carbon dioxide liquefaction unit, which performs a heat exchange with a refrigerant (which is a portion of a cold heat source in the gaseous state that is used and manufactured in a cold heat source production plant), thereby liquefying carbon dioxide which has been separated and recovered from a gas containing carbon dioxide; and an energy recovery unit, which extracts energy and lowers the temperature of the gaseous refrigerant by expanding the gaseous refrigerant that has exchanged heat with the carbon dioxide in the carbon dioxide liquefaction unit. The energy recovery unit returns the gaseous refrigerant, the temperature of which has been lowered, to the cold heat source production plant.
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