FIELD: chemistry.
SUBSTANCE: method includes, in a first absorption process, absorbing carbon dioxide when the fed carbon dioxide-containing natural gas comes into contact with a first solvent by-pass stream, thereby forming a carbon dioxide-impoverished natural gas and a carbon dioxide-rich solvent; in a burning process, burning the carbon dioxide-impoverished natural gas to form carbon dioxide-containing exhaust gas; in a second absorption process, absorbing carbon dioxide when the fed carbon dioxide-containing exhaust gas comes into contact with a second solvent by-pass stream, thereby forming carbon dioxide-free exhaust gas and carbon dioxide-rich solvent; finally in the desorption process, merging the first by-pass stream and the second by-pass stream of the carbon dioxide-rich solvent and desorbing carbon dioxide by feeding heat energy, wherein a carbon dioxide-impoverished solvent is formed.
EFFECT: high efficiency of the method.
8 cl, 1 dwg
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Authors
Dates
2015-12-20—Published
2011-09-27—Filed