Gas treatment process

Details Gas treatment process Gas treatment process

1985-08-29

1986-11-18

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

55 68, 62 17, 62 22, 62 24, 62 62, F25J 300

Patent

active

046233709

ABSTRACT:
In a gas treatment process, a liquid tail product from a nitrogen wash column, which is typically incorporated into a process for the manufacture of ammonia from hydrocarbons, coal or other carbonaceous material, is separated in cryogenic distillation columns into product streams. Streams rich in hydrogen and carbon monoxide are available at elevated pressure and may be beneficially recycled to the ammonia manufacturing process. The process requires no external source of refrigeration and no compressor is incorporated therein. A stream of liquid nitrogen, which may typically be available in an ammonia manufacturing plant, may optionally be used and, when used, will result in improved separation in the distillation columns.

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