METHOD OF SYNTHESIS OF METHANE FROM METHANE-AIR MIXTURE Russian patent published in 1998 - IPC

FIELD: chemical technology. SUBSTANCE: preliminary refined from mechanical impurities and moisture methane-air mixture, for example, mine gas is fed to conversion in the presence of steam and conversion catalyst. Then oxygenless gas containing CO, CO₂ and H₂, passes heat-exchangers and drying agent and follows to treatment by absorption with solvent. Gas containing decreased amount of CO₂ is fed to methanator where binar gas containing nitrogen and methane forms. Gaseous flow dried in adsorbers passing heat-exchangers and cooling is fed to low-temperature separation in fractionating column. Nitrogen is escaped from upper column part and methane - from bottom one. The synthesized methane is used as fuel. EFFECT: improved method of synthesis. 1 dwg