Separation of industrial gases

A method comprising:

• providing a compressible feed stream comprising a first compressible component and hydrogen;
• providing an incompressible fluid stream comprised of an incompressible fluid capable of absorbing the first compressible component or reversibly reacting with the first compressible component;
• mixing the compressible feed stream and the incompressible fluid stream to form a mixed stream, where the compressible feed stream is provided for mixing at a first linear velocity in a first direction and the incompressible fluid stream is provided for mixing at a second linear velocity in a second direction, the second linear velocity having a velocity component in the same direction as the first direction, where the mixed stream has an instantaneous third linear velocity in a third direction and is comprised of the hydrogen and a constituent selected from the group consisting of a mixture of the first compressible component and the incompressible fluid, a chemical compound or adduct of a reversible reaction between the first compressible component and the incompressible fluid, and mixtures thereof;
• imparting a rotational velocity to the mixed stream, where the direction of the rotational velocity is tangential or skew to the direction of the third instantaneous linear velocity of the mixed stream;
• and
• separating an incompressible fluid product stream from the mixed stream, where the incompressible fluid product stream comprises the incompressible fluid and at least a portion of the constituent of the mixed 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.