Air separation in combination with a chemical process

Details Air separation in combination with a chemical process Air separation in combination with a chemical process

1989-10-16

1991-12-31

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Producing or treating free metal

75958, 48197R, 60648, 60651, 60671, C21B 538

Patent

active

050768379

ABSTRACT:
A method and apparatus for recovering work from a nitrogen stream, wherein the nitrogen is preheated via heat exchange with hot fluid from a chemical process, which process utilizes the oxygen product of the air separation. Preferably at least a part of the expanded nitrogen is utilized to preheat at least one fluid reactant of the chemical process. The chemical process may be gasification or direct reduction of iron oxide, as well as the conversion of natural gas into synthesis gas.

REFERENCES:
patent: 4697413 (1987-10-01), Pohl
patent: 4729217 (1988-03-01), Kehlhofer
patent: 4861369 (1989-08-01), von Bogdandy et al.

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