PREPARATION AND PURIFICATION PROCESS FOR CRYOGENIC FRACTIONATION USING LOW PRESSURE SUPERSONIC SEPARATOR

摘要

does the present invention define a new concept of ppu unit? air preparation and purification unit? for preparation and purification of air to be cryogenically fractionated in the next step known as cold-box. The alternative ppu concept proposed here uses low pressure supersonic separator (ss) to remove 97.5% of water from the air, followed by adsorption finishing (era) or similar solid medium treatments (eg adsorption). chemical) to remove co2, n2o and hydrocarbon contaminants, as well as residual traces of h2o, adapting contaminant levels for further cold-box processing of a cryogenic air fractionation plant.