Fremgangsmåde til fremstilling af syntesegas og fremgangsmåde til fremstilling af methanol

摘要

There is disclosed a method of manufacturing a synthesis gas comprising reacting hydrocarbons with water vapor in a reformer (30) to produce a synthesis gas containing hydrogen, carbon monoxide and carbon dioxide, recovering carbon dioxide from combustion exhaust gas which has been discharged from the reformer (30) by a carbon dioxide recovery apparatus (90) provided with a carbon dioxide absorption tower and with a carbon dioxide-absorbing liquid regenerating tower, and feeding the carbon dioxide thus recovered, as a component of raw gas, to the upstream side and/or the downstream side of the reformer. The hot synthesis gas produced in the reformer (30) is utilized as a heat source for regenerating a carbon dioxide-absorbing liquid in the carbon dioxide-absorbing liquid regenerating tower of the carbon dioxide recovery apparatus (90).