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Abstract

A method to condense and recover CO₂ from CO₂ containing streams. A first step involve providing at more than one heat exchanger, with each heat exchanger having a first flow path for passage of a first fluid and a second flow path for passage of a second fluid. A second step involves passing a stream of very cold natural gas sequentially along the second flow path of each heat exchanger until it is heated for distribution and concurrently passing a CO₂ containing stream sequentially along the first flow path of each heat exchanger, allowing the water vapor portion of the CO₂ containing stream to condense and precipitate on the condensing heat exchangers. A third step involves passing a water vapor free CO₂ containing stream to a cryogenic heat exchanger to condense, precipitate and recover CO₂. This processes results in the recovery of CO₂ and water vapor from CO₂ containing streams using condensing heat exchangers, chiller, compressor, expander and power generator to recover the low value thermal heat available in CO₂ containing waste streams.

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First Claim