Process and plant for generating nitrogen for heat treatment

Details Process and plant for generating nitrogen for heat treatment Process and plant for generating nitrogen for heat treatment

1996-06-06

1998-03-17

Tran, Hien

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

Waste gas purifier

422171, 422172, 422173, 422190, 422200, B01D 5000

Patent

active

057283540

ABSTRACT:
A plant for generating a nitrogen-based gas is provided. The plant includes a source of impure nitrogen under pressure containing a residual oxygen concentration; a main gas conduit; a catalytic deoxygenation reactor; a secondary gas line connected to a source of a secondary reducing gas at one end thereof and to the main gas conduit at a point situated upstream of the catalytic deoxygenation reactor at another end thereof; and a device for removing water vapor present in a gas. The source of impure nitrogen is connected to the catalytic deoxygenation reactor via the main gas conduit. The main gas conduit between the source of impure nitrogen and the point where the secondary gas line is connected is devoid of any flow control device.

REFERENCES:
patent: 3535074 (1970-10-01), Nakashima
patent: 4505879 (1985-03-01), Lhonore et al.
patent: 4632678 (1986-12-01), Cosyns et al.
patent: 4988490 (1991-01-01), Nicholas et al.
patent: 5073350 (1991-12-01), Ham 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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