To provide a production process of hydrogen of good production efficiency, investigating the process from various aspects, such as supply of feed, production of hydrogen, regeneration and recycling of a carbon dioxide absorbent, generation and consumption of energy, etc.
This process is a method of reacting a carbon-containing material with water of high temperature and high pressure and producing hydrogen by reducing the water while thermochemically decomposing the carbon- containing material, and, in this method of producing hydrogen by thermochemical decomposition, the reaction is carried out in the presence of a carbon dioxide absorbing material which will absorb at least all the carbon dioxide produced under a condition of the pressure of not lower than 30 atm. and the temperature of 600-800°C and substantially adding no oxidizer, and this process contains a process to pelletize and supply the carbon-containing material and the carbon dioxide absorbing material, a process to carry out the thermochemical decomposition in the main reactor, and a process to take out the unreacted reactants from the main reactor and to bake them in a baking unit.
HATANO HIROYUKI
SUZUKI ZENZO
NAT INST OF ADV IND & TECHNOL
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