Autothermal Reforming (autothermal + reforming)

Distribution by Scientific Domains


Selected Abstracts


Hydrogen Production via Autothermal Reforming of Diesel Fuel

FUEL CELLS, Issue 3 2004
J. Pasel
Abstract Hydrogen, for the operation of a polymer electrolyte fuel cell, can be produced by means of autothermal reforming of liquid hydrocarbons. Experiments, especially with ATR 4, which produces a molar hydrogen stream equivalent to an electrical power in the fuel cell of 3,kW, showed that the process should be preferably run in the temperature range between 700, and 850,. This ensures complete hydrocarbon conversion and avoids the formation of considerable amounts of methane and organic compounds in the product water. Experiments with commercial diesel showed promising results but insufficient long-term stability. Experiments concerning the ignition of the catalytic reaction inside the reformer proved that within 60,s after the addition of water and hydrocarbons the reformer reached 95% of its maximum molar hydrogen flow. Measurements, with respect to reformer start-up, showed that it takes approximately 7,min. to heat up the monolith to a temperature of 340, using an external heating device. Modelling is performed, aimed at the modification of the mixing chamber of ATR Type 5, which will help to amend the homogeneous blending of diesel fuel with air and water in the mixing chamber. [source]


Autothermal Reforming and Partial Oxidation of Methane in Fluidized Reactor over Highly Dispersed Ni Catalyst Prepared from Ni Complex

CHINESE JOURNAL OF CHEMISTRY, Issue 6 2006
Jing Gao
Abstract Highly dispersed Ni catalysts on spherical SiO2 were prepared by simple impregnation of Ni(acac)2, [Ni-(NH3)6,n(H2O)n]2+, [Ni(en)3]2+ and [Ni(EDTA)]2,. Pulse adsorption of H2 and TEM analysis results confirmed that Ni was dispersed very well on the surface of SiO2 even after calcination (4 h) and reduction (1 h) at high temperature of 800 C. These highly dispersed and uniquely sized Ni crystallites were more stable and more reactive for both autothermal reforming and partial oxidation of methane in fluidized reactor. [source]


Autothermal reforming of methane with integrated CO2 capture in novel fluidized bed membrane reactors

ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING, Issue 3 2009
F. Gallucci
Abstract Hydrogen production with integrated CO2 capture by autothermal reforming of methane has been investigated in a novel fluidized bed membrane reactor configuration. With a phenomenological reactor model the reactor performance has been investigated over a wide range of operating conditions, viz. temperature, pressure, H2O/CH4 ratio, and membrane area. The results obtained show that pure hydrogen production with integrated CO2 capture is feasible, however, only with a relatively low load/surface ratio (L/S) (<1 m3/m2 h). On the other hand, if complete CO2 capture is not the major aim, the reactor can be operated in a much wider range of L/S (1,10 m3/m2 h) obtaining much higher conversions than achievable with a reactor without membranes, and H2 recoveries higher than 80%, which open up possibilities for industrial application of membrane reactors. Copyright 2009 Curtin University of Technology and John Wiley & Sons, Ltd. [source]


Hydrogen Production via Autothermal Reforming of Diesel Fuel

FUEL CELLS, Issue 3 2004
J. Pasel
Abstract Hydrogen, for the operation of a polymer electrolyte fuel cell, can be produced by means of autothermal reforming of liquid hydrocarbons. Experiments, especially with ATR 4, which produces a molar hydrogen stream equivalent to an electrical power in the fuel cell of 3,kW, showed that the process should be preferably run in the temperature range between 700, and 850,. This ensures complete hydrocarbon conversion and avoids the formation of considerable amounts of methane and organic compounds in the product water. Experiments with commercial diesel showed promising results but insufficient long-term stability. Experiments concerning the ignition of the catalytic reaction inside the reformer proved that within 60,s after the addition of water and hydrocarbons the reformer reached 95% of its maximum molar hydrogen flow. Measurements, with respect to reformer start-up, showed that it takes approximately 7,min. to heat up the monolith to a temperature of 340, using an external heating device. Modelling is performed, aimed at the modification of the mixing chamber of ATR Type 5, which will help to amend the homogeneous blending of diesel fuel with air and water in the mixing chamber. [source]


Autothermal reforming of methane with integrated CO2 capture in novel fluidized bed membrane reactors

ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING, Issue 3 2009
F. Gallucci
Abstract Hydrogen production with integrated CO2 capture by autothermal reforming of methane has been investigated in a novel fluidized bed membrane reactor configuration. With a phenomenological reactor model the reactor performance has been investigated over a wide range of operating conditions, viz. temperature, pressure, H2O/CH4 ratio, and membrane area. The results obtained show that pure hydrogen production with integrated CO2 capture is feasible, however, only with a relatively low load/surface ratio (L/S) (<1 m3/m2 h). On the other hand, if complete CO2 capture is not the major aim, the reactor can be operated in a much wider range of L/S (1,10 m3/m2 h) obtaining much higher conversions than achievable with a reactor without membranes, and H2 recoveries higher than 80%, which open up possibilities for industrial application of membrane reactors. Copyright 2009 Curtin University of Technology and John Wiley & Sons, Ltd. [source]


Autothermal Reforming and Partial Oxidation of Methane in Fluidized Reactor over Highly Dispersed Ni Catalyst Prepared from Ni Complex

CHINESE JOURNAL OF CHEMISTRY, Issue 6 2006
Jing Gao
Abstract Highly dispersed Ni catalysts on spherical SiO2 were prepared by simple impregnation of Ni(acac)2, [Ni-(NH3)6,n(H2O)n]2+, [Ni(en)3]2+ and [Ni(EDTA)]2,. Pulse adsorption of H2 and TEM analysis results confirmed that Ni was dispersed very well on the surface of SiO2 even after calcination (4 h) and reduction (1 h) at high temperature of 800 C. These highly dispersed and uniquely sized Ni crystallites were more stable and more reactive for both autothermal reforming and partial oxidation of methane in fluidized reactor. [source]