Engineering analysis of a rotary dryer: drying of wood particles
Rotary dryers are the most commonly used wood drying system in the particleboard industry. These dryers also play an increasingly important role in drying wood residues for fuel. A rotary dryer simulation model was developed, in the form of a computer program, for the purpose of analyzing the drying behavior of wood particles. The approach used in the model development analyzed the rotary drying process in a sequential manner. Beginning with a study of particle residence time in a rotary drum, the process of heat transfer, and then mass transfer, were incorporated to yield a complete rotary dryer simulation model. The resultant computer program does not require empirical constants or equations developed for a particular rotary dryer system. Experiments on a commercially manufactured rotary dryer were performed to check the performance of the simulation model as a predictor of overall residence time and drying behavior. Comparison between the predictions and the measured results were good, indicating a percent root mean square error of 22.2 in the prediction of the outlet particle moisture content. The rotary dryer simulation model developed in this study should prove useful for optimizing process parameters in the drying of wood particles.
- Research Organization:
- Oregon State Univ., Corvallis (USA)
- OSTI ID:
- 5290258
- Resource Relation:
- Other Information: Thesis (Ph.D.)
- Country of Publication:
- United States
- Language:
- English
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