Decomposition of biogas into hydrogen on hot slag

摘要

Use of biogas as a resource instead of methane for hydrogen production is a promising way to eliminate CO_2 emission. Since most of the biogas produced from fermentation of biomass contains CH_4 and CO_2 and the efficiency used is limited for producing steam in a boiler to generate electricity. A newly trend to reduce CO_2 emission is combining the hydrogen production with processing of molten waste from high temperature industries. The concept is that, biogas is introduced into the molten slag in a close system to promote endothermic reaction by using the emitted heat during contact of gas with slag. Practically, energy required for the endothermic reaction is coming from the sensible heat of slag that replacing the fossil fuel as energy source. The purpose of this work is to generate hydrogen from CH_4-CO_2 on hot slag as a reaction medium. Chemical reaction rate was investigated in a range temperature 1073 K to 1273 K.