Patent ID: 9611440
Date: 2017-04-04
CPC Classifications: C10J,C10K,C10L

Claim:
1. A process for producing dry synthetic natural gas from solid or liquid, carbonaceous fuel, said process comprising the following process steps carried out in the following order: a) preparing a first gas by gasifying the fuel, wherein said first gas consists substantially of carbon monoxide, carbon dioxide, methane and hydrogen; b) preparing a second gas by cooling said first gas and separating from the first gas solids and a gas condensate; c) preparing a third gas by converting carbon monoxide in said second gas into carbon dioxide and hydrogen; d) preparing a fourth gas by separating hydrogen sulfide, carbon dioxide and steam from said third gas by washing the third gas with methanol as solvent, wherein the methanol is circulated via a regenerating means for separating hydrogen sulfide, carbon dioxide and water from the methanol, wherein the regenerating means also comprises a methanol-water separation column; e) preparing a fifth gas by catalytically-supported-conversion of the carbon monoxide, residual carbon dioxide and hydrogen in the fourth gas, wherein the fifth gas consists substantially of methane and steam; f) preparing a sixth gas by predrying the fifth gas by condensing moisture by means of cooling and/or cold water; g) preparing a seventh gas by adding methanol to the sixth gas; h) preparing an eighth gas by separating steam from the seventh gas and condensing out the steam by forming a water-methanol mixture; i) preparing a ninth gas by separating the water-methanol mixture from the eighth gas; and j) obtaining said dry synthetic natural gas by heating the ninth gas to a desired discharge temperature.