gegenstromwu00e4rmetauscher and its application in luftzerlegungsanlagen

摘要

Counter flow heat exchanger with a first fluid near ambient temperature and a second fluid at a temperature less than -20 degrees C. The first fluid circulates centripetally from an external radial inlet (17), and the second fluid circulates centrifugally fr an internal radial inlet (18). Air distillation unit which includes such an exchanger. Cryogenic cooling process using such an exchanger At least one passage connects the two inlets and is flowed through alternately by the two fluids in opposite directions. Th passage contains packing in at least part of its length, for heat accumulation or selective adsorption of some components of the fluids. Each packing is in an annular bed (23) and the packing particles have a diameter smaller than 15 mm and preferably betwe and 10 mm. The heat exchanger is designed to cool air for distillation and remove water and CO2 and other impurities from the air during the cooling process.