Title: CFD investigation of deposition in a heat recovery boiler: Part II – deposit growth modelling

Authors: Bingzhi Li, Anders Brink, Mikko Hupa

Addresses: Process Chemistry Centre, Abo Akademi University, Piispankatu 8, FI-20500 Turku, Finland. ' Process Chemistry Centre, Abo Akademi University, Piispankatu 8, FI-20500 Turku, Finland. ' Process Chemistry Centre, Abo Akademi University, Piispankatu 8, FI-20500 Turku, Finland

Abstract: In the copper flash smelting process, deposition of dust particles can diminish the capacity of the heat recovery boiler. A deposit growth model was developed and implemented in a commercial CFD code to simulate deposition in a heat recovery boiler. In the model, a force balance of the particle landing on the wall is used as the deposition criterion. The thickness increase of the deposit layer is calculated from the mass flow of sticking particles. Simulations are used to demonstrate the applicability of the model. They also help in providing insight into the process.

Keywords: deposit growth modelling; Cu2O sulphation; copper(I) oxide; cuprous oxide; unconverted particles; heat recovery boilers; copper flash smelting; computational fluid dynamics; CFD; boiler design; process parameters.

DOI: 10.1504/PCFD.2009.027763

Progress in Computational Fluid Dynamics, An International Journal, 2009 Vol.9 No.8, pp.453 - 459

Published online: 10 Aug 2009 *

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