This investigation is set in the more comprehensive study of an innovative fluidized bed reformer configuration for producing hydrogen from either biomass/coal syngas or natural gas, in which capture of carbon dioxide by-product occurs in parallel with steam reforming and water-gas shift reactions. Reported here are experimental data of carbon dioxide absorption by particles of calcined dolomite included in a bed of otherwise inert material; the bed, initially fluidized by nitrogen, was subjected to a step concentration input of carbon dioxide and the sorption kinetics was obtained from the outlet response of the entire system. The influence of dolomite particle size was investigated-from 98 to 1,550 μm-and a previously developed grain model was used to relate the observed effect of particle diameter to the complex mechanism of carbon dioxide capture in a solid sorbent. The results show that pore shrinking effects during the carbon dioxide capture process become increasingly more significant as the particle size is increased. © 2011 Springer-Verlag.
All Science Journal Classification (ASJC) codes
- Renewable Energy, Sustainability and the Environment