Effects of Gas–Solid Hydrodynamic Behavior on the Reactions of the Sorption Enhanced Steam Methane Reforming Process in Bubbling Fluidized Bed Reactors

2011 ◽  
Vol 50 (14) ◽  
pp. 8430-8437 ◽  
Author(s):  
Yuefa Wang ◽  
Zhongxi Chao ◽  
Hugo A. Jakobsen
Keyword(s):  
Fluidized Bed ◽  
Fluidized Bed Reactors ◽  
Methane Reforming ◽  
Hydrodynamic Behavior ◽  
Steam Methane Reforming ◽  
Steam Methane ◽  
Bubbling Fluidized Bed

Modeling of Autothermal Steam Methane Reforming in a Fluidized Bed Membrane Reactor

2002 ◽  
Vol 1 (1) ◽  
Author(s):  
Meltem Dogan ◽  
Dusko Posarac ◽  
John Grace ◽  
Alaa-Eldin M. Adris ◽  
C. Jim Lim
Keyword(s):  
Fluidized Bed ◽  
Porous Alumina ◽  
Fluidized Bed Reactors ◽  
Methane Reforming ◽  
Hydrogen Yield ◽  
Flux Tubes ◽  
Steam Methane Reforming ◽  
Steam Methane ◽  
Membrane Surfaces ◽  
Reforming Reactions

Fluidized bed reactors for steam methane reforming, with and without immersed membrane surfaces for withdrawal of hydrogen, are modeled with oxygen added in order to provide the endothermic heat required by the reforming reactions. Porous alumina, palladium and palladium-coated high-flux tubes are investigated as separation materials, the latter two being permselective. Hydrogen yield and permeate hydrogen molar flow are predicted to decrease with increasing oxygen flow, and to increase with temperature. When the steam-to-carbon ratio increases, permeate hydrogen yield decreases slightly, while the total hydrogen yield increases for all configurations. The flow of oxygen required to achieve autothermal conditions depends on such factors as the reactor temperature, steam-to-carbon ratio and preheating of the feed.

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