Production of a refrigerant slurry by controlled venting and agi

Production of CO.sub.2 pellets

Production of high pressure oxygen

Production of high purity argon

Production of intermediate purity oxygen by plural distillation

Production of large quantities of CO.sub.2 snow

Production of liquid oxygen and/or liquid nitrogen

Production of nitrogen by air separation

Production of nitrogen free of light impurities

Production of nitrogen from air

Production of oxygen by air separation

Production of oxygen-lean argon from air

Production of pure nitrogen

Production of ultra-high purity oxygen from cryogenic air separa

Propane removal process

Propylene fractionation

Pumped liquid oxygen method and apparatus

Purification of crude argon

Purification of natural gas by liquid/liquid extraction with a p

Purification of oxygen by cryogenic adsorption