weghaus weghaus GmbH CFD simulation of chloride-containing flue dust in waste incinerators by coupling ChemApp and CFX Comparison of calculation and measurements Dipl.-Ing. Martin Weghaus, Weghaus GmbH, Würzburg Dipl. Chem. Hermann Nordsieck, BIfA GmbH, Augsburg Dr.-Ing. Ragnar Warnecke, GKS GmbH, Schweinfurt Dr. Klaus Hack, GTT mbH, Herzogenrath
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weghausweghausGmbH
CFD simulation of chloride-containingflue dust in waste incinerators by
coupling ChemApp and CFX
Comparison of calculation and measurements
Dipl.-Ing. Martin Weghaus, Weghaus GmbH, Würzburg
Dipl. Chem. Hermann Nordsieck, BIfA GmbH, Augsburg
Dr.-Ing. Ragnar Warnecke, GKS GmbH, Schweinfurt
Dr. Klaus Hack, GTT mbH, Herzogenrath
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� Introduction
� Methods
� Results of calculation
� Results of measurements
� Comparison
� Summary
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Introduction
CFD ( Computational Fluid Dynamics )
�Streamvelocity
�Streamlines
�Combustion - distribution of species
� Temperature
�Residence time
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Introduction
Combustion
�Combustion models� e.g. LUAT-Essen, LEAT-Bochum, Umsicht-Oberhausen, GKS/Cutec
Schweinfurt)
�Majority-species
�CxHy, CO, CO2, H2O, N2, N2, O2, SO2, HCl
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Introduction
Corrosion
�Minority-species� Alkali- / alkalineearth- / heavy metals
�Variety of possible compounds
� Limited knowledge of „Product forming models“
� Lacking of material data
�Complicate validation
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Methods
Ansys-CFX
�One of the 3 great CFD-Codes
�Robust solver
�Good performance (parallel , multigrid-solver)
�Good models for radiation and combustion
�Comprehensive wall-functions
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Methods
CFD-Simulation
�Grate model
��Species
�Combustion
�Heat exchange
�Further sources / sinks
�Secondary air, SNCR ...
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Methods
Validation
�Continous validation with implemented plants
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- Brüssel
- Gamsen
- Horgen
- Ningbo
- Lippendorf
- Schweinfurt
- Würzburg
- Kirklees
- Isle of Man
- Neapel/Calabrien
- Palermo/Casteltermini
- Moerdijk
- Halmstadt
- Södertälje
- Joenkoeping
- ...
CFD-CFD-StudiesStudies of of wastewaste
incinerationsincinerations
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Methods
FactSage / ChemApp
�Unification of FACT-Win and ChemSage in2001
�One of the largest databases for chemicalthermodynamics in the world