Patent ID: 8795397
Filing Date: 2014-08-05
Classification: B01J,C01B,H01M,Y02E,Y02P

Abstract:
1. A reforming apparatus for reforming a raw fuel into a hydrogen-rich reformed gas, the reforming apparatus comprising: a reformer configured to generate the reformed gas from the raw fuel; and a steam supply means configured to supply steam to said reformer, wherein said steam supply means includes: at least first and second gas-liquid multiphase heat exchangers for conducting in turn heat exchange with at least one of a combustion exhaust gas and the reformed gas to raise an evaporation rate of water up to a condition of gas-liquid multiphase, the combustion exhaust gas being generated when said reformer is heated, a pipe configured to connect the at least first and second gas-liquid multiphase heat exchangers in series and allow passage of steam or water in a gas-liquid mixed phase that is supplied to the reformer, a dry-out heat exchanger disposed to receive the gas-liquid multiphase water from the series-connected first and second gas-liquid multiphase heat exchangers to dry out the water by conducting heat exchange with at least one of the combustion exhaust gas and the reformed gas, an upstream-side narrow-down mechanism located between a water supply means for supplying water by pressure toward the first gas-liquid multiphase heat exchanger and the second gas-liquid multiphase heat exchanger, the upstream-side narrow-down mechanism having a diameter smaller than that of a passage of the second gas-liquid multiphase heat exchanger, and the cross-sectional area of a passage in the dry-out heat exchanger is larger than that of a pipe connected between the dry-out heat exchanger and the series-connected first and second gas-liquid multiphase heat exchangers.