HIGH SPEED PRESSURE SWING ADSORPTION LIQUID OXYGEN/LIQUID NITROGEN GENERATING PLANT

摘要

An apparatus for producing high purity oxygen and nitrogen in the liquid and gaseous phases. The apparatus is a modular, mobile system employing a low design operating pressure. The system purifies ambient air through filters (100) and a dual immobilized fixed bed molecular sieve type pressure swing adsorber (150) prior to the cryogenic distillation of the air. Through the incorporation of the pressure swing adsorber (150) having a high frequency regeneration cycle, the disclosed system provides a reduced system size. The configured system employs waste gas from the distillation process to purge the pressure swing adsorber (150). The cryogenic distillation procedure includes a heat exchanger (300), a turboexpander (350), high (400) and low pressure distillation columns, a subcooler (480) and a condenser.