MATHEMATICAL MODELLING OF MDF FIBRE DRYING: DRYING OPTIMISATION
作者:
S. Pang,
期刊:
Drying Technology
(Taylor Available online 2000)
卷期:
Volume 18,
issue 7
页码: 1433-1448
ISSN:0737-3937
年代: 2000
DOI:10.1080/07373930008917786
出版商: Taylor & Francis Group
关键词: MDF fibre;Pinus radiata;tube dryer;drying rate;moisture content;air humidity;air temperature;heat consumption;dryer emission
数据来源: Taylor
摘要:
In the production of MDF, wet resinated fibre must be dried to its target moisture content, normally 9 to 11%, before compaction into a board by hot pressing. Fibre drying can be interpreted as an incorporated process involving gas-solid two phase-flow, inter-component transfer, and heat and mass transfer within the fibre. Based on these mechanisms, a mathematical model has been developed to simulate the MDF fibre drying process. From the model, fibre moisture content, air temperature and air humidity along the dryer length can be predicted and factors affecting the drying rate examined. The model can be employed to optimise drying conditions and to evaluate improvements in dryer design. A case study of drying improvement in reduction of dryer emissions and heat consumption is given to demonstrate the potential application of the developed dryer model.
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