PURPOSE: To effectively use a low-temperature heat source, to carry out vaporization and reaction and to efficiently obtain a modified gas rich in H2, by partially vaporizing a modification raw material by a vaporizing blending part specifically set at the front stage of a vaporizing evaporator in a gas-liquid two phase flow, sending the raw material through the vaporizing evaporator to a reactor and reacting.
CONSTITUTION: A modification raw material such as an alcohol, etc., is sent from a modification raw material tank 2 to a raw material feed pump 4, water is sent from a water supply tank 1 by a water pump 3, these raw materials are blended with part of a process formed gas introduced through recycle blower 20, fed to a vaporizing blending part consisting of a low-temperature vaporizer 19, the modification raw material is partially vaporized in a gas-liquid two phase flow, fed to a vaporizing evaporator 8 and vaporized. Then the vaporized raw material is fed to a modification reactor 11, the modification raw material sent by a pump 5 and air from a compressor 9 are burnt by a combustor 12, reaction under heating is carried out at about 250°C, heat of a modified gas rich in H2 is recovered by an air preheater 13, the modified gas is dehydrated by a gas-water separator 14 and sent to a H2 utilizing device 15. On the other hand, the separated water is recovered in a water supply tank 1 by a water supply tank 6.
SHIMADA KAZUNARI
YAMADA RYOKICHI
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