Method for enrichment of nitrogen in air by the method of adsorp

Details Method for enrichment of nitrogen in air by the method of adsorp Method for enrichment of nitrogen in air by the method of adsorp

1983-09-06

1984-12-25

Konopka, P. E.

Gas separation

Means within gas stream for conducting concentrate to collector

55 74, 423449, 264 294, 264 295, 502418, 502420, 502427, 502437, B01D 5302, B01D 5304, C01B 3102, C01B 3108

Patent

active

044901607

ABSTRACT:
The invention provides an improvement in the method for the enrichment of nitrogen in air by the method of selective adsorption of oxygen in air on a carbonaceous adsorbent material. The improvement comprises the use of an adsorbent material prepared in a specific manner in which a pulverized coal char is blended with a limited amount of a sulfite pulp waste liquor and the blend is shaped into granules or pellets followed by carbonization at 300.degree. to 450.degree. C. for 1 to 2 hours. An enriched nitrogen gas containing 1% by volume or less of oxygen can readily be obtained by passing air through a column filled with the adsorbent material.

REFERENCES:
patent: 3996108 (1976-12-01), Joseph
patent: 4124529 (1978-11-01), Jungten et al.
patent: 4156595 (1979-05-01), Scott et al.
patent: 4165220 (1979-08-01), Colletta et al.
patent: 4233117 (1980-11-01), Jungten et al.
patent: 4264339 (1981-04-01), Jungten et al.
patent: 4415340 (1983-11-01), Knoblauch et al.

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