Bridging particle and reactor scales in the simulation of biomass fast pyrolysis by coupling particle resolved simulation and coarse grained CFD-DEM
Bridging particle and reactor scales in the simulation of biomass fast pyrolysis by coupling particle resolved simulation and coarse grained CFD-DEM
复制标题
颗粒分辨模拟与粗粒CFD-DEM耦合模拟生物质快速热解中颗粒与反应器尺度的桥接
DOI：
10.1016/j.ces.2020.115471
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发表时间：
2020-04
影响因子：
4.7
通讯作者：
Liqiang Lu;Xi Gao;M. Shahnam;W. Rogers
中科院分区：
文献类型：
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作者：
Liqiang Lu;Xi Gao;M. Shahnam;W. Rogers
Efficient utilization of biomass is challenging due to the complexity of the feedstock at molecular, particle, and reactor scales. Direct coupling of particle scale model and reactor scale simulation is computationally infeasible. In this research, the results from a particle resolved simulation were used to calibrate the heat transfer and reaction kinetics of particles. A hybrid drag model was used to consider the different fluidization properties of sands and biomass particles. The computation cost was reduced using a coarse-grained Discrete Element Method (DEM). The simulated conversion rate, char yield, tar yield, and pyrolysis gas yield compare well with experiment. The residence time and axial distributions of biomass were also analyzed. This novel multi-scale method provides an efficient and accurate tool for the modeling of biomass pyrolysis reactors.
