| Abstract
| - Flue-gas desulfurization in a circulating fluidized-bed absorber (CFBA) is quite a novel technologythat has significant potential advantages, in comparison with other semidry desulfurizationprocesses. A high desulfurization yield, a high sorbent utilization, low investment costs, andthe fact that relatively little extra space is required are the most outstanding features of thistechnology. This paper shows the main results obtained in a 3-MWe equivalent pilot plantspecifically designed and constructed to assess the performance of a flue gas cleaning systemcomposed of a CFBA unit and an electrostatic precipitator. The results of an experimentalprogram were used to determine the parameters of a semiempirical model that correlates theSO2 removal efficiency to the main operating variables. The model, based on the number ofoverall mass-transfer units, shows a coefficient of determination (R2) close to 0.9, indicating agood correlation between the measured and calculated efficiency values.
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