Patent ID: 7565806
Filing Date: 2009-07-28
Classification: F02C,F25J

Abstract:
1. A method for supplying an air separation unit using a gas turbine, in which incoming air enters an inlet of said separation unit, at least a fraction of said incoming air is supplied from said gas turbine, at least one nitrogen-enriched gas stream is extracted from the separation unit, and this nitrogen-enriched gas stream is heated, characterized in that, to heat the nitrogen-enriched gas stream, heat exchange occurs between the fraction of incoming air issuing from the gas turbine and a liquid fraction to be heated in a first heat exchanger, in order to obtain a heated liquid fraction, this heated liquid fraction is added to a liquid mixture fraction, in order to obtain a liquid fraction to be cooled, and heat exchange occurs between this liquid fraction to be cooled and the nitrogen-enriched gas stream in a second heat exchanger.