Separation of gases produced by combustion

A system comprising:

• a separation device that:
• 1) receives
• a) an incompressible fluid stream comprised of an incompressible fluid, and
• b) a compressible feed stream comprised of a first compressible component and a second compressible component, where the compressible feed stream is derived from a combustion process, and
• 2) discharges a first compressible product stream comprising at least 60% of the second compressible component and an incompressible fluid product stream comprising at least 60% of the first compressible component;
• an incompressible fluid regenerator that receives the incompressible fluid product stream and discharges a second compressible product stream enriched in the first compressible component and a first compressible component-depleted incompressible fluid product stream;
• and
• an incompressible fluid injection device that receives the first compressible component-depleted incompressible fluid product stream and mixes the first compressible component-depleted incompressible fluid product stream with the compressible feed stream.

A method comprising:

• providing a compressible feed stream comprised of a first compressible component and a second compressible component, where the compressible feed stream is derived from a combustion source;
• selecting an incompressible fluid and providing an incompressible fluid stream comprising the incompressible fluid, wherein the incompressible fluid is selected to selectively absorb or react with the first compressible component relative to the second compressible component;
• mixing the compressible feed stream and the incompressible fluid stream in a substantially co-current flow to form a mixed stream;
• inducing a rotational velocity to the mixed stream;
• and
• separating an incompressible fluid product stream from a compressible product stream, where the incompressible fluid product stream contains an increased amount of the first compressible component relative to the incompressible fluid stream and the compressible product stream contains a reduced amount of the first compressible component relative to the compressible feed stream, and where the incompressible fluid product stream is separated from the mixed stream as a result of the rotational velocity imparted to the mixed stream.