High pressure nitrogen production cryogenic process

Details High pressure nitrogen production cryogenic process High pressure nitrogen production cryogenic process

1989-10-27

1990-05-22

Capossela, Ronald C.

Refrigeration

Processes

Circulating external gas

62 39, 62 44, F25J 302

Patent

active

049274414

ABSTRACT:
The present invention is a cryogenic process to produce medium to high pressure gaseous nitrogen without the use of a nitrogen product compressor. The process is an improvement to a conventional nitrogen generator with waste expander. The present invention reboils crude liquid oxygen from the main distillation column in two stages at different pressures and uses a small number of trays above one of the reboilers. The use of the trays above one of the reboilers allows collection of a pressurized stream with a composition similar to air. This pressurized stream is recycled to an intermediate stage of the main air compressor.

REFERENCES:
patent: 4222756 (1980-09-01), Thorogood
patent: 4617036 (1986-10-01), Suchdeo et al.
patent: 4662916 (1987-05-01), Agrawal et al.
patent: 4662917 (1987-05-01), Comier, Sr. et al.
patent: 4662918 (1987-05-01), Agrawal et al.
patent: 4707994 (1987-11-01), Shenoy et al.
patent: 4783210 (1988-11-01), Ayres et al.
patent: 4848996 (1989-07-01), Thorogood et al.
patent: 4872893 (1989-10-01), Agrawal

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