PREDICTIVE MODEL FOR LEATHER DRYING BY DIFFERENT TECHNOLOGIES

摘要：

Predictive models for drying kinetics were developed for three of the main industrial leather drying technologies (toggle drying, natural drying and vacuum drying).These models are useful tools to predict the effect of process variables on drying evolution as well as for process control.Experimental data for different conditions of toggle, natural and vacuum drying were obtained and computer programs were developed to determinate models parameters.Proposed models provide a description of the process based on mass and energy balance as well as on transport phenomena equations.The best models obtained for toggle and natural drying, indicated that convective heat transfer between air and leather controls drying rate.For vacuum drying, the best model showed that diffusion of water within leather controls the rate of drying process.The models developed allow predicting variations of moisture content during leather drying with errors under 3.0％, 0.4％ and 8％ for toggle, natural and vacuum drying respectively.

关键词： leather drying drying models toggling drying natural drying vacuum drying

作者: B.Zecchi P.Gerla

作者单位: Dpto.de Operaciones Unitarias en Ing.Química e Ing.Alimentos,Instituto de Ingeniería QuímicaFacultad Dpto.de Operaciones Unitarias en Ing.Química e Ing.Alimentos,Instituto de Ingeniería Química Faculta

会议类型: 国际会议

会议名称: The 7th Asia-Pacific Drying Conference(第七届亚太地区干燥会议 ADC2011)

会议地点: 天津

会议语种:英文

页码: 1-6

在线出版日期: 2011-09-18（万方平台首次上网日期，不代表论文的发表时间）