RADIATION HEAT-TRANSMISSION TYPE REFORMER

摘要

PURPOSE:To effectively utilize a catalyst on the raw gas inlet side and to improve reforming efficiency in the radiation heat-transmission type reformer by injecting a specified amt. of air which is mixed with a raw gas before the raw gas enters a catalytic body. CONSTITUTION:A gas-impermeable partition wall 5 is provided in a closed vessel 10 to divide the vessel into a combustion section 1 and a heat receiving section 3. A porous heat radiator 2 is provided in the combustion section 1 and a catalytic body 4 in the heat receiving section 3. A high-temp. gas is supplied to the radiator 2, and the catalytic body 4 is heated by the heat radiated from the high-temp. gas. A raw gas 8 is supplied to the heat receiving section 3 from a raw gas pipe 11, brought into contact with the catalytic body 4 and reformed. In this case, the air 21 corresponding to =38% of the raw gas is supplied through an air pipe 20 before the raw gas 8 enters the catalytic body 4 and mixed with the raw gas 8. Consequently, heat is generated by the oxidation of the raw gas and reformed gaseous hydrogen with air to compensate for the temp. decrease in the catalytic body 4 due to the steam reforming reaction.