纸张穿透式热风干燥过程的数学模型  

Mathematical Model Describing Through-Air Drying Process of Paper

作　　者：王正顺[1] 陈克复[1] 黄良辉[1] 康国兵[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2010年第4期40-44,共5页Journal of South China University of Technology(Natural Science Edition)

基　　金：山东省科技攻关项目(2006GG3204019);山东省教育厅科技发展项目(J06A05)

摘　　要：基于多孔介质气流干燥理论,建立了纸张穿透式热风干燥的数学模型,并对数学模型进行了分析求解,最后通过自制实验装置进行了热风干燥实验以验证模型的可靠性.实验结果表明:模型计算的纸页水分及温度随干燥时间的变化趋势与实测数据吻合度较高,常速干燥期和降速干燥期模型计算数据略高于实测数据,水分含量相差4个百分点.证明该数学模型和数值计算方法具有较高的可靠性,可为纸张穿透式热风干燥的设计和操作优化提供理论依据.Based on the air drying theory of porous media,a mathematical model describing the through-air drying（TAD） process of paper was built and numerically analyzed.Then,the reliability of the model was validated by hot-air drying experiments using a self-developed experimental device.The results show that the calculated paper moisture and temperature varying with the drying time accord well with the measured ones,and that,in the normal drying period and the decreasing period,the calculated values are only 4 percent higher than the measured ones.It is thus concluded that the proposed mathematical model and numerical calculation method are both reliable,which provides a theoretical basis for the design and operation optimization of TAD of paper.

关 键 词：湿纸页 热风穿透干燥 数学模型 数值分析 纸页水分 纸页温度 

分 类 号：TS755[轻工技术与工程—制浆造纸工程]