Fossil fuels such as coal or oil are gasified by treatment under superatmospheric pressures with oxygen containing gasifying agents to produce a primary gas containing carbon monoxide and hydrogen. The primary gas is desulfurized and converted in increasing portion into methanol which is stored as the...http://www.google.es/patents/US3959972?utm_source=gb-gplus-sharePatente US3959972 - Power plant process
