Closed-loop thermal servicing of solvent-refining columns
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United States of America Patent
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Nov 28, 2017
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Sep 28, 2015
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Sep 28, 2015
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Abstract
A method of thermally servicing a solvent-refining column comprises: running a closed-loop water-steam system past a top and bottom of a first column, the first column containing at least a solvent and impurities; boiling pressurized water in the closed-loop water-steam system to steam using first heat from the top of the first column; compressing the steam in the closed-loop water-steam system to a higher temperature; and providing second heat to the first column by condensing the steam at the bottom of the first column after compression.
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