1. Theoretical performance analysis of the multi-stage gas-solid fluidized bed air preheater
- Author
-
Sang Il Park
- Subjects
Waste management ,Renewable Energy, Sustainability and the Environment ,Chemistry ,Nuclear engineering ,Energy Engineering and Power Technology ,Combustion ,Fuel Technology ,Moving bed heat exchanger ,Nuclear Energy and Engineering ,Fluidized bed ,Waste heat ,Heat exchanger ,Air preheater ,Fluidized bed combustion ,Chemical looping combustion - Abstract
The multi-stage fluidized bed can be used to preheat the combustion air by recovering the waste heat from the exhaust gas from industrial furnaces. The dilute-phase fluidized bed may be formed to exclude the excessive pressure drop across the multi-stage fluidized bed. But, in this case, the solid particles do not reach to the thermal equilibrium due to relatively short residence time in each layer of fluidized bed. In this study, a theoretical analysis on the dilute phase multistage fluidized bed heat exchanger was performed. A parameter related to the degree of thermal equilibrium between gas and solid particles at the dilute-phase fluidized beds was derived. Using this parameter, a relatively simple expression was obtained for the thermal efficiencies of the multi-stage fluidized bed heat exchanger and air preheater. Copyright © 2001 John Wiley & Sons, Ltd.
- Published
- 2001