Refrigeration – Processes – Circulating external gas
Patent
1980-10-27
1982-06-22
Yudkoff, Norman
Refrigeration
Processes
Circulating external gas
62 28, 55 68, 55 73, 48197R, F25J 302
Patent
active
043360440
ABSTRACT:
Gas produced from coal and containing CH.sub.4, CO, CO.sub.2, H.sub.2 and H.sub.2 S is contacted with CO.sub.2 scrub liquid to form (1) a liquid CO.sub.2 stream containing as solutes CH.sub.4, H.sub.2 S and minor portions of the CO and H.sub.2, and (2) a gas stream containing CO.sub.2 and major portions of the CO and H.sub.2, the CO and H.sub.2 in this stream being recycled to the means which produces gas from coal, and CO.sub.2 in the stream being recycled to the scrub liquid. The solute-bearing liquid CO.sub.2 stream is fractionated into (1) a liquid CO.sub.2 stream containing CH.sub.4 and H.sub.2 S, and (2) a H.sub.2 /CO gas stream which is recycled into contact with the scrub liquid. The last-mentioned liquid CO.sub.2 stream is fractionated into (1) a CH.sub.4 /CO.sub.2 gas stream the CO.sub.2 of which is recycled to the scrub liquid, and (2) a liquid CO.sub.2 stream containing H.sub.2 S, and CO.sub.2 of this stream is also recycled to the scrub liquid.
REFERENCES:
patent: 3130026 (1964-04-01), Becker
patent: 4149864 (1979-04-01), Eakman et al.
patent: 4152129 (1979-05-01), Trentham et al.
Barker Ray E.
Ryon Allen D.
Scott Charles D.
Besha Richard G.
Grant Edwin D.
Hamel Stephen D.
The United States of America as represented by the United States
Yudkoff Norman
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