Dynamic simulation of fouling in a circulating fluidized biomass-fired boiler |
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| Authors: | Jan Sandberg Rebei Bel Fdhila Erik Dahlquist Anders Avelin |
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| Affiliation: | 1. Department of Energy Technology, Fluid Dynamics Research Group, Mälardalen University, Box 883, SE – 721 23 Västerås, Sweden;2. ABB Corporate Research, Department of Automation Technology, Forsgränd 7, SE – 721 78 Västerås, Sweden |
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| Abstract: | A dynamic model is presented for a biomass-fired circulating fluidized bed boiler. The model is based on energy and mass balances for the components in the boiler and on a combustion model for the fluidized bed. The main purpose of the model is to simulate how deposits affect the boiler efficiency and performance. The model is verified against the municipal circulating fluidized bed boiler in Västerås, Sweden, which produces 157 MW. The distribution of deposits on the surfaces in the boiler is well known from inspections. These observations are used as inputs to the model to simulate their effects on boiler performance. |
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| Keywords: | Dynamic model CFB boiler Fouling Superheater tubes Deposit layer Biomass-fired boiler |
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