Publication Date:
2011-11-26
Description:
The fluid-dynamic behavior of a circulating fluidized bed pilot plant for oxyfuel combustion was studied in a cold flow model, down-scaled using Glicksman's criteria. Pressures along the unit and the global circulation rate were used for characterization. The analysis of five operating parameters and their influence on the system was carried out; namely, total solids inventory and the air velocity of primary, secondary, loop seal and support fluidizations. The cold flow model study shows that the reactor design allows stable operation at a wide range of fluidization rates, with results that agree well with previous observations described in the literature. Fluid-dynamic characterization of an oxyfuel combustion pilot plant is performed using a cold flow model scaled according to the laws proposed by Glicksman. Pressure profiles and circulation rates are determined experimentally in the cold flow model. Based on measurements, the fluid-dynamic limits of the operating ranges are identified and can be extrapolated to the original hot pilot plant.
Print ISSN:
0930-7516
Electronic ISSN:
1521-4125
Topics:
Chemistry and Pharmacology
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Process Engineering, Biotechnology, Nutrition Technology
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