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
- 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}
}