Method and Device for Recovering Carbon Dioxide from Fumes
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United States of America Patent
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Issued Date -
Dec 11, 2008
app pub date -
Dec 20, 2006
filing date -
Dec 21, 2005
priority date (Note) -
Abandoned
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Abstract
The method and the system for capturing the carbon dioxide present in flue-gas implement a) a first cooler device (110, 120) for cooling flue-gas and comprising at least one heat exchanger (122) for eliminating a fraction of the water present in the flue-gas by condensation; b) a flue-gas dehydration device (130); c) a second cooler device (140) for cooling the flue-gas and comprising at least one heat exchanger (141, 142) for bringing the flue-gas to a temperature that causes anti-sublimation of the carbon dioxide present in the flue-gas; d) a heater device (141, 142) in a closed enclosure for heating the solidified carbon dioxide to cause it to melt; and e) a device (144) for drawing off or pumping liquid and/or gaseous carbon dioxide to a thermally insulated tank (150). The system further comprises an expander device (152, 153) for expanding a portion of the recovered liquid carbon dioxide to atmospheric pressure, and for reinjecting said portion of the carbon dioxide into the flue-gas at the second flue-gas cooler means (140).
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