Compositions – Gaseous compositions – Nitrogen and hydrogen containing
Patent
1986-08-07
1988-02-16
Doll, John
Compositions
Gaseous compositions
Nitrogen and hydrogen containing
252373, 252374, 252375, 252377, 423359, 423655, C01B 326
Patent
active
047253819
ABSTRACT:
A carbonaceous feedstock, e.g. coal or heavy oil, having a low hydrogen to carbon atomic ratio is partially oxidized using air, or oxygen enriched or depleted air, to form a crude gas which is subjected to catalytic shift and excess steam removal. Carbon dioxide and nitrogen are then removed from the resultant raw gas, which has a hydrogen to nitrogen, plus carbon monoxide, volume ratio in the range 0.5 to 1.5 and a nitrogen content at least 10 times the carbon monoxide content, in a pressure swing adsorption process thereby producing a product gas stream containing at least 50% hydrogen and 0.5 to 40% nitrogen, by volume. The waste gas from the pressure swing adsorption may be catalytically combusted to power a turbine driving the compressor for the air or the crude gas.
REFERENCES:
patent: 4409196 (1983-10-01), Skinner et al.
patent: 4414191 (1983-11-01), Fuderer
patent: 4512780 (1985-04-01), Fuderer
patent: 4553981 (1985-11-01), Fuderer
patent: 4592860 (1986-06-01), Fuderer
Doll John
Imperial Chemical Industries plc
Langel Wayne A.
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