Process and apparatus for purification and cryogenic separation of air without precooling

摘要

Air is compressed to≥11.4 x 10<5> Pa and then introduced into a chamber containing adsorbent particles to remove some impurities. The air is at≥15 degrees C before or after it enters the chamber. An Independent claim is included for a cryogenic separation plant. Preferred Features: The air is compressed to 22 x 10 <5> Pa - 38 x 10 <5> Pa and at 25 - 65 degrees C prior to adsorption. The adsorption is by a temperature swing adsorption and removes carbon dioxide, water vapor, nitrogen oxides, sulfur oxides and hydrocarbons. The air is cooled to below 120 degrees C and then distilled cryogenically.