MODELING AND SIMULATION OF DRYING OPERATION IN PVC POWDER PRODUCTION LINE:A PNEUMATIC DRYER MODEL

摘要：

　　A one-dimensional steady-state model is developed to simulate drying of PVC powder in a pneumatic dryer.In this model,a two-phase continuum model was used to describe the steady-state flow of a dilute dispersed phase (wet PVC powder) and a continuous phase (humid air) through dryer.The particle scale kinetics was obtained by immersion of a fixed mass of wet PVC’s particles (cake) in a batch dense fluidized bed containing inert hot particles (glass bead).The drying kinetics was described by a shrinking core type model and integrated in pneumatic dryer model.The results show that the inlet temperature is the most important parameter in the operation.The drying rate is controlled by a two-stage process.The first stage corresponds to the surface water evaporation,and the second to the pore water evaporation.

关键词： pneumatic dryer PVC shrinking core kinetic model

作者: A.Aubin R.Ansart M.Hemati T.Lasuye M.Branly

作者单位: Université de Toulouse;INPT,UPS;Laboratoire de Génie Chimique;4,Allée Emile Monso,F-31030 Toulouse,F INEOS - Société Artésienne de Vinyle,Chemin des soldats 62670 Mazingarbe,France

会议类型: 国际会议

会议名称: The 18th International Drying Symposium Conference(第十八届国际干燥学术大会(IDS2012))

会议地点: 厦门

会议语种:英文

页码: 1-8

在线出版日期: 2012-01-11（万方平台首次上网日期，不代表论文的发表时间）