METHOD FOR THE PURIFICATION OF RAW GAS

摘要

A method for the purification of a raw gas comprising hydrogen, carbon oxides and nitrogen, which method comprises the steps of a) subjecting the raw gas to a methanation reaction and converting carbon monoxide and carbon dioxide contained in the raw gas to methane; b) drying the methanated raw gas; d) subjecting the dried methanated raw gas to an ammonia reaction and converting nitrogen in the gas to ammonia; e) removing ammonia from the raw gas from step d); and f) withdrawing a purified gas with a reduced content of carbon oxides and nitrogen.