Prediction and measurement of the coal slag viscosity including the influence of solid particle fractions
The flow behavior of slag in entrained flow gasification reactors is influenced by the local environment (temperature, oxygen partial pressure, etc.) and essentially depends on the knowledge of the slag viscosity. This is in turn influenced by the possible presence of solid phases. This work therefore forms the beginning of a systematic investigation of the influence of individual solid phases occurring in the slag on the slag viscosity. Among the most often occurring solids in slag is tridymite (SiO2). The influence of tridymite and also of cristobalite on the viscosity of slags was analyzed as function of the solid volume fraction by applying the Einstein-Roscoe model. The parameters used in this model were obtained from a comparison of experimental and predicted viscosity values for various slag systems. Reintroduction of the determined parameters to the modeling of the viscosity resulted in a good agreement with the experimental data.
viscosity molten oxide modeling slag thermodynamics
Arne M. BRONSCH Marc A. DUCHESNE Patrick J. MASSET Clemens SCHMETTERER
Freiberg University of Mining and Technology, Centre for Innovation Competence VIRTUHCON, Research G CanmetENERGY, Natural Resources Canada, 1 Haanel Dr., Ottawa, Canada K1A 1M1 Freiberg University of Mining and Technology, Centre for Innovation Competence VIRTUHCON, Research G
国际会议
Ninth International Conference on Molten Slags,Fluxes and Salts(第九届国际熔渣、溶剂与熔盐学术会议 MOLTEN12)
北京
英文
1-9
2012-05-27（万方平台首次上网日期，不代表论文的发表时间）