USO DE NITROGENO DE UNA UNIDAD DE SEPARACION DE AIRE COMO REFRIGERANTE DE LA ALIMENTACION DEL COMPRESOR DE AIRE DE LA TURBINA DE GAS PARA MEJORAR EL RENDIMIENTO DEL TRABAJO.

摘要

The work produced by the gas turbine expander (40), is improved by cooling a nitrogen product (86), produced by a cryogenic air separation unit (80), to a subambient temperature and combining this subambient cooled, nitrogen product (92) with the feed air stream (10) prior to compression (20). The cooling can be produced by expanding (90) the nitrogen product (86) and/or saturating it with water (Fig 2;190). The present invention is particularly suited to a process in which at least a portion of the oxygen product (84) produced by the cryogenic air separation unit (80) is reacted with a carbonaceous feedstock (72) in a gasification unit (70) to produce the fuel gas.