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Title: Process for separating coal synthesized methane from unreacted intermediate and contaminant gases

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.

Inventors:
 [1];  [2];  [2]
  1. (Knoxville, TN)
  2. (Oak Ridge, TN)
Issue Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
OSTI Identifier:
864247
Patent Number(s):
4336044
Assignee:
United States of America as represented by United States (Washington, DC) ORNL
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; separating; coal; synthesized; methane; unreacted; intermediate; contaminant; gases; gas; produced; containing; contacted; scrub; liquid; form; stream; solutes; minor; portions; major; recycled; means; produces; solute-bearing; fractionated; contact; last-mentioned; gas stream; stream containing; major portion; gas produced; minor portion; /62/48/95/

Citation Formats

Barker, Ray E., Scott, Charles D., and Ryon, Allen D. Process for separating coal synthesized methane from unreacted intermediate and contaminant gases. United States: N. p., 1982. Web.
Barker, Ray E., Scott, Charles D., & Ryon, Allen D. Process for separating coal synthesized methane from unreacted intermediate and contaminant gases. United States.
Barker, Ray E., Scott, Charles D., and Ryon, Allen D. Fri . "Process for separating coal synthesized methane from unreacted intermediate and contaminant gases". United States. https://www.osti.gov/servlets/purl/864247.
@article{osti_864247,
title = {Process for separating coal synthesized methane from unreacted intermediate and contaminant gases},
author = {Barker, Ray E. and Scott, Charles D. and Ryon, Allen D.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {1}
}

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