Patent ID: 9056772
Filing Date: 2015-06-16
Classification: C01B,C10G,C10K

Abstract:
1. A method for producing synthesis gas comprising a desulfurization step of desulfurizing sulfur compounds in natural gas by means of a desulfurization apparatus; a synthesis gas production step for producing synthesis gas by way of a reforming reaction of gas containing desulfurized natural gas, steam and carbon dioxide; and a carbon dioxide removal step for separating and collecting separated and collected gas containing carbon dioxide as main component from the produced synthesis gas, the method further comprising a step of recycling the separated and collected gas for the synthesis gas production step, wherein the desulfurization step is constituted of two steps including a first step of hydrogenating the sulfur compounds contained in natural gas and a second step of adsorbing the sulfur compounds hydrogenated in the first step by means of a desulfurizing agent, and wherein said separated and collected gas is introduced into the natural gas after the first step and before the second step.