by 
Thommy
ANSWERS: 1
-
Oxygen is commercially produced by cooling air til it liquefies. The liquid air is sent through fractional distillation (i.e. through a still), collecting the oxygen fraction which is pumped into tanks under pressure. Electrolysis of water is also used. Commercially, carbon dioxide is recovered from furnace or kiln gases; from fermentation processes; from reaction of carbonates with acids; and from reaction of steam with natural gas, a step in the commercial production of ammonia. The carbon dioxide is purified by dissolving it in a concentrated solution of alkali carbonate or ethanolamine and then heating the solution with steam. The gas is evolved and is compressed into steel cylinders.
RELATED QUESTIONS
Copyright 2023, Wired Ivy, LLC