NUMERICAL MODELING OF COAL GASIFICATION IN A CIRCULATING FLUIDIZED BED REACTOR
Modelling of coal gasification in circulating fluidized bed (CFB) using Eulerian-Lagrangian approach is presented in this paper.The Dense Discrete Phase Model (DDPM) model of ANSYS Fluent is used to simulate the flow of the particulate phase in the coal gasifier.The coal particles, with a size distribution, are tracked in the fluid velocity field including coupling between the phases.Kinetic Theory of Granular Flow is utilized to model the particles interactions.The analyzed CFB comprises a small scale experimental facility in which coal is gasified in air/steam mixture.The reactor is composed of a barrel like bottom part with developed internal recirculation of the solid phase and 3.74 m high riser section.The homogenous gas phase reactions are modelled using the finite rate and eddy dissipation models.The heterogeneous reactions on coal particles surface are modelled using the finite rate chemistry.A total number of 14 reactions are considered.Results obtained from the simulations are compared with experimental data.
Adam Klimanek Wojciech Adamczyk Anna Katelbach-Wo(z)niak Andrzej Szl(e)k
Institute of Thermal Technology,Silesian University of Technology,Gliwice,Poland
国际会议
The 11th International Conference on Fluidized Bed Technology(CFB-11)(第十一届流化床技术国际会议)
北京
英文
747-753
2014-05-14（万方平台首次上网日期，不代表论文的发表时间）