Process for generating nitrogen for heat treatment

Details Process for generating nitrogen for heat treatment Process for generating nitrogen for heat treatment

1995-06-07

1997-12-09

Langel, Wayne

Chemistry of inorganic compounds

Nitrogen or compound thereof

C01B 2100

Patent

active

056957319

ABSTRACT:
A process for generating a nitrogen-based gas, comprising the steps of:
(i) combining a secondary reducing gas including at least one reducing gas with a primary nitrogen gas including 0.5-5% by volume of oxygen, the combining of the secondary gas being performed according to an uncontrolled all-or-nothing method;
(ii) reacting the primary gas and the secondary gas in a catalytic deoxygenation reactor so as to obtain a nitrogen-based reaction gas which includes water vapor; and
(iii) removing at least a part of the water vapor present in the nitrogen-based reaction gas by cooling the reaction gas under pressure to induce formation of a liquid phase and then extracting the liquid phase from the reaction gas under pressure to obtain a purified reaction gas.

REFERENCES:
patent: 4988490 (1991-01-01), Nicholas et al.
patent: 5320818 (1994-06-01), Garg et al.
Chemical Abstracts, vol. 107, No. 20, Nov. 16, 1987, Abstract No. 179402k, D. Cheng et al., "Equipment and Process for Producing Superpure Nitrogen From Common Nitrogen", p. 202.

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