Abstract:
Provided are a method for effectively separating carbon dioxide during the reaction carbon when the carbon dioxide is generated in a production process of hydrogen that is a clean fuel through steam reforming reaction of methane that is a fossil fuel, and a process of easily desorbing carbon dioxide absorbed into an absorbent from the absorbent using high temperature gas. In a method for separating carbon dioxide using two reactors which are sequentially packed with a steam reforming catalyst and a carbon dioxide absorbent in a methane steam reforming reaction in which hydrogen and carbon dioxide are generated by reacting water with methane, a method for separating carbon dioxide using two high temperature gas regeneration type reactors comprises: a step(i) of separating hydrogen and carbon dioxide at 550 to 800 deg.C through the steam reforming reaction by injecting water and methane for steam reforming reaction into a first reactor, and regenerating a carbon dioxide absorbent by injecting high temperature gas heated to a temperature of 800 to 1,200 deg.C in a preheater into a second reactor, thereby heating the second reactor to the temperature of 800 to 1,200 deg.C; a step(ii) of regenerating a carbon dioxide absorbent into which carbon dioxide generated after performing the reforming reaction is absorbed by injecting high temperature gas heated to a temperature of 800 to 1,200 deg.C in a preheater into a first reactor, thereby heating the first reactor to the temperature of 800 to 1,200 deg.C, and separating hydrogen and carbon dioxide at 550 to 800 deg.C through the steam reforming reaction by injecting water and methane for steam reforming reaction into the first reactor; and a step(iii) of repeatedly performing the steps(i) and (ii).
Abstract:
The present invention relates to a compound including oxalate, a carbon dioxide absorbent including the same, a method for producing the same, and a method for removing carbon dioxide. The high reproducing energy and low absorbing function of existing carbon dioxide absorbents are overcome so that reproducing energy is remarkably lowered. The carbon dioxide absorbed per unit of absorbent can be increased so that the size of a carbon dioxide absorbing tower can be reduced. Used reproducing energy is lowered so that device producing costs and operating costs can be remarkably reduced and economical feasibility can be ensured.