1. Efecto de la concentración de SO2 en las reacciones de calcinación y sulfatación de calcáreos en reactores de lecho fluidizado.
- Author
-
Samaniego, J. E. Lindo, Costa, M. C. Diniz, Milioli, F. E., and Pagliuso, J. D.
- Subjects
- *
SULFUR dioxide , *GASES , *LIMESTONE , *ROCK-forming minerals , *CHEMICAL kinetics , *FURNACES , *CALCIUM - Abstract
A Study of the effect of the concentrations of SO2 in its absorption by limestones in fluidized bed furnaces was conducted. For the determination of the SO2 influence on the different physical and chemical parameters of process, such as calcinations and sulfatation four different atmospheres were used in the reactor with concentrations of SO2 of 500, 1000, 2000 and 4000 ppm. Two types of limestones were used: Dolomite-DP and Calcitic-CI. The bench scale bubbling fluidized bed reactor had a 160 mm internal diameter and was fluidized with air at 850 °C containing the required concentration of SO2. Bed material was quartz sand (99,9%) , with 385 µm diameter and approximately 3 kg of mass. The limestone was introduced in samples of 50 kg in the reactor previously stabilized and their discharges in the reactor exit were continually monitored. For the recording of this parameters a data acquisition program in LabView was developed. A mathematical model was used to allow the determination of the conversion, the conversion rate and the global coefficient of reaction rate for all the test conditions. [ABSTRACT FROM AUTHOR]
- Published
- 2008