Journal of South China University of Technology (Natural Science Edition) ›› 2010, Vol. 38 ›› Issue (4): 40-44.doi: 10.3969/j.issn.1000-565X.2010.04.008

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Mathematical Model Describing Through-Air Drying Process of Paper

Wang Zheng-shun  Chen Ke-fu  Huang Liang-hui  Kang Guo-bing   

  1. State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2009-06-11 Revised:2009-09-03 Online:2010-04-25 Published:2010-04-25
  • Contact: 王正顺（1967-），男，博士生，副教授，主要从事现代造纸设备研究． E-mail:wzsylq@yahoo．com．cn
  • About author:王正顺（1967-），男，博士生，副教授，主要从事现代造纸设备研究．
  • Supported by:

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

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Abstract:

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

Key words: wet paper sheet, through-air drying, mathematical model, numerical analysis, paper moisture, paper temperature