A COMPARATIVE STUDY OF MODELS DESCRIBING HIGH CONSISTENCY REFINING

摘要：

By using the same selected input data in three different refining models the model predictions could be compared both in relation to each other and related to experimental data. Predictions delivered by the Miles and May model deviated most from the estimates based on measured values. The fluid dynamical model and especially the entropy model showed good agreement both when it came to describing the specific energy distribution and the local refining intensity distribution over the refining radius. However, the entropy model had problems with predicting the mean fibre velocity close to the refiner inlet while the fluid dynamical model had a tendency to overestimate the fibre velocity when approaching the periphery. In conclusion, the models could deliver realistic estimates. Still, the models need to be developed to be able to depict refining actions even better. To validate new or improved models, more research involving measurements from refiner gaps are needed.

关键词： High consistency refining Refining intensity Refining models

作者: Birgitta Engberg Jan-Erik Berg

作者单位: FSCN, Mid Sweden University,SE-851 70 Sundsvall, Sweden

会议类型: 国际会议

会议名称: International Mechanical Pulping Conference 2011(2011国际机械浆学术会议)

会议地点: 西安

会议语种:英文

页码: 96-100

在线出版日期: 2011-06-26（万方平台首次上网日期，不代表论文的发表时间）