CFD MODELING OF RISER REACTORS USING MUTI-SCALE METHOD

摘要：

　　For gas-solid riser reactors, the multi-scale structure of dense phase in the form of clusters and dilute phase in the form of a dispersed particle is a significant feature.Most of recent studies have focused on the development of the inter-phase drag model for heterogeneous gas-solid flow.However, the effect of mesoscale structure on mass transfer and heat transfer is also important during the reactions and should be considered in the model.In this work, we extend this relationship to n-order irreversible chemical looping reactions and the influence of clusters on chemical reaction is investigated.A cluster structure-dependent (CSD) drag coefficient model is incorporated to solve the inter-phase drag coefficient and provide local structural parameters.The local gas species concentrations and mass coefficients are obtained.

作者: Shuai Wang Feixiang Zhao Qinghong Zhang Huilin Lu

作者单位: School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China

会议类型: 国际会议

会议名称: The 11th International Conference on Fluidized Bed Technology(CFB-11)(第十一届流化床技术国际会议)

会议地点: 北京

会议语种:英文

页码: 273-279

在线出版日期: 2014-05-14（万方平台首次上网日期，不代表论文的发表时间）