3D UNSTEADY MULTIPHASE SIMULATION OF URANIUM TETRAFLUORIDE PARTICLE FLUORINATION IN FLUIDIZED BED PILOT

摘要：

This paper investigates Eulerian simulation approach of uranium hexafluoride production in fluidized bed pilot. Mass transfer is modeled by using the shrinking particle model. The model successfully predicts expected amount of uranium hexafluoride. As heat transfers with wall are neglected, temperature increases within the reactor and there is no gradient in wall-normal direction of reactor. External diffusion model of reactive gas around particle is developed. Effect of fluorine diffusion within nitrogen is found to be negligible under the simulation conditions. Moreover, inter-particle radiative heat transfer between particles of dense phase in the bed is investigated in the frame of Rosseland approximation.

关键词： uranium fluorination shrinking core model diffusion radiative heat transfer

作者: N.A.Konan H.Neau O.Simonin M.Dupoizat T.Le Goaziou

作者单位: Universitéde Toulouse, IMFT, UMR 5502 CNRS/INPT/UPS, France Areva NC BU-Chimie, Pierrelatte, France

会议类型: 国际会议

会议名称: 第20届国际流化床燃烧会议(20th International Conference on Fluidized Bed Combustion)

会议地点: 西安

会议语种:英文

页码: 1152-1158

在线出版日期: 2009-05-18（万方平台首次上网日期，不代表论文的发表时间）