separation apparatus and process for oxy-combustion coal power plants
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United States of America Patent
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Sep 18, 2012
Grant Date -
Aug 21, 2008
app pub date -
Apr 2, 2007
filing date -
Feb 16, 2007
priority date (Note) -
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Abstract
An improved process for the separation of carbon dioxide from the flue gas of an oxy-combustion power plant is provided. The flue gas is compressed, cleaned, cooled and dried. This clean, compressed dry flue gas is then further cooled, partially condensed and separated into liquid and vapor streams. The liquid streams, which contain a high concentration of carbon dioxide, are vaporized, compressed and exported to an end user. The vapor streams are heated and expanded, in order to extract useable energy. At least two expanders are used to extract this energy, with an intermediate warming step.
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