Process for producing dry synthetic natural gas (SNG)

摘要

A process for producing dry synthetic natural gas (SNG, Synthetic Natural Gas) from solid or liquid, carbonaceous fuel, substantially consisting of the following process steps:a) gasification of a solid or liquid, carbonaceous fuel to a raw synthesis gasb) cooling of the gas, separation of solids and the gas condensatec) raw gas conversiond) washing of the gas with methanol for separating hydrogen sulfide, carbon dioxide and moisture, wherein the methanol is circulated via a regeneration plant,e) methanation,f) condensation of moisture by means of cooling and/or cold water,g) further drying of the gas by condensation at low temperature by adding methanol to avoid the formation of ice.