Abstract: A process and an apparatus for regenerating the loaded scrubbing medium in a physical gas scrub in which at least materials of a first type and a second type are scrubbed out of a gas mixture, where predominantly materials of the first type are separated off from scrubbing medium loaded with materials of the first type and the second type by stripping at elevated pressure and a loaded scrubbing medium enriched in materials of the second type and also a gas phase that is made up of the stripping gas used in stripping and the materials separated off from the loaded scrubbing medium are obtained. The loaded scrubbing medium enriched in materials of the second type by means of stripping is depressurized and subsequently fed to a separator in order to obtain a flash gas.

Abstract: A process and an apparatus for regenerating the loaded scrubbing medium in a physical gas scrub in which at least materials of a first type and a second type are scrubbed out of a gas mixture, where predominantly materials of the first type are separated off from scrubbing medium loaded with materials of the first type and the second type by stripping at elevated pressure and a loaded scrubbing medium enriched in materials of the second type and also a gas phase that is made up of the stripping gas used in stripping and the materials separated off from the loaded scrubbing medium are obtained. The loaded scrubbing medium enriched in materials of the second type by means of stripping is depressurized and subsequently fed to a separator in order to obtain a flash gas.

Abstract: A method for producing nitrogen for injection into an enhanced oil recovery operation wherein the nitrogen is produced in an air separation device and the oxygen stream produced is not discarded but recovered and employed with or without an additional air gas stream for feeding to a partial oxidation unit/autothermal reformer and shift conversion to produce carbon dioxide and hydrogen. The carbon dioxide can additionally be used for injection into an enhanced oil recovery operation and the hydrogen can be used as a fuel for a gas turbine driven closed cycle power plant for providing energy to the air separation device.

Abstract: A method for producing carbon dioxide using the waste gas oxygen stream from an air separation unit producing nitrogen as the oxygen feed. The oxygen is fed to an autothermal reformation or partial oxidation unit to produce synthesis gas which is subjected to a shift reaction to produce hydrogen and carbon dioxide. The carbon dioxide is separated and recovered and can be employed in an enhanced oil recovery operation.