Prediction of Thermal Behavior of Pyrolyzed Wet Biomass by Means of Model with Inner Wood Structure

作     者：Sylwia Polesek-Karczewska Dariusz Kardas 

作者机构：Institute of Fluid Flow Machinery of Polish Academy of Sciences 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2015年第24卷第1期

页      面：82-89页

核心收录：

学科分类：080703[工学-动力机械及工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：partially financed from the project "Agro-energy complexes as an example of dispersed co- generation based on local renewable energy sources" (POIG.01.01.02-00-016/08) within the framework of Programme "Innowacyjna Gospodarka 2007-2013" 

主　　题：Pyrolysis Fixed Bed Evaporation Mass Source 

摘      要：A simplified one-dimensional transient model for biomass pyrolysis in a fixed bed cylindrical reactor has been formulated and experiments have been carded out to verify the calculation results regarding temperature distribu- tion. The mathematical model accounts for mass, momentum and heat transfer, including moisture evaporation and convection of pyrolysis gases. Numerical simulation has allowed to predict temperature and heat flux distri- bution, and the dynamics of feedstock devolatilization. Special attention has been devoted to the analysis of the effect of biomass moisture content on the pyrolysis process. The model of moisture vaporization in biomass bed was proposed, which included structure of surface of biomass particles. Assuming that vaporization occurs on the border of the dry and wet areas of the bed, the flux of water vaporization depends on the specific surface area of the particles and overall heat flux.