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Title: Process for separating coal synthesized methane from unreacted intermediate and contaminant gases. [Patent application]

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:
; ;
Issue Date:
OSTI Identifier:
6178168
Assignee:
Dept. of Energy TIC; ERA-06-029875; EDB-81-096236
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 10 SYNTHETIC FUELS; CARBON DIOXIDE; SEPARATION PROCESSES; SOLVENT PROPERTIES; CARBON MONOXIDE; HYDROGEN; HYDROGEN SULFIDES; METHANE; PURIFICATION; ADSORPTION; COAL GASIFICATION; FRACTIONATION; SCRUBBING; ALKANES; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; ELEMENTS; GASIFICATION; HYDROCARBONS; HYDROGEN COMPOUNDS; NONMETALS; ORGANIC COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; SORPTION; SULFIDES; SULFUR COMPOUNDS; THERMOCHEMICAL PROCESSES; 010404* - Coal, Lignite, & Peat- Gasification; 400105 - Separation Procedures; 090121 - Hydrocarbon Fuels- Chemical Synthesis- (1976-1989)

Citation Formats

Barker, R.E., Scott, C.D., and Ryon, A.D. Process for separating coal synthesized methane from unreacted intermediate and contaminant gases. [Patent application]. United States: N. p., 1980. Web.
Barker, R.E., Scott, C.D., & Ryon, A.D. Process for separating coal synthesized methane from unreacted intermediate and contaminant gases. [Patent application]. United States.
Barker, R.E., Scott, C.D., and Ryon, A.D. Mon . "Process for separating coal synthesized methane from unreacted intermediate and contaminant gases. [Patent application]". United States.
@article{osti_6178168,
title = {Process for separating coal synthesized methane from unreacted intermediate and contaminant gases. [Patent application]},
author = {Barker, R.E. and Scott, C.D. and Ryon, A.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 = {1980},
month = {10}
}