To provide a method and device for producing a synthetic gas, with which the equipment cost can be reduced without necessitating high temperature heating.
The synthetic gas containing hydrogen, methane, carbon monoxide and an olefin based organic compound gas is generated by uniformly passing steam with a hydrocarbon gas to be decomposed between porous tubes 4 in porous tube group vertically existing extendedly in a decomposition reaction tower 1, jetting air or oxygen homogeneously in the direction at a right angle to the flow of steam and the hydrocarbon gas to be decomposed to the outside from the porous tube to ignite to form diffusion flame layer B on the outside surface of the porous tube 4 and causing a radical reaction by using the flame layer B as the heat source.
YONEDA MASASHI
DENDA ROKURO
JAPAN STEEL WORKS LTD
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