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Modelling of Coal Pyrolysis Using a Twin ScrewReactor
Published online by Cambridge University Press: 09 October 2009
Abstract
Based on the balance equations of mass, partial mass, momentum and thermal energy, the pyrolysis process of non-coking coals using a counter-rotating twin screw reactor (TSR) is modelled by means of commercial CFD code PhoenicsTM. In favour of good convergence of the mathematical solution, a structured, cylindrical-polar grid is chosen. Variable filling and intermeshing degrees are taken into account by blocking numerical cells in gas domain and intermeshing domain instead of performing two-phase calculations in a body-fitted co-ordinate system. Viscous behaviour of the granular coals is expressed by means of a generalised Newtonian fluid and chemical decomposition is implemented with aid of distributed activation energies.
- Type
- Research Article
- Information
- Metallurgical Research & Technology , Volume 106 , Issue 10: Selected papers from 4th ULCOS SEMINAR (Part 2) , October 2009 , pp. 404 - 409
- Copyright
- © La Revue de Métallurgie, 2009
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