文献类型：期刊文献

英文题名：Optimization design for DTB industrial crystallizer of potassium chloride

作者：Song, Xingfu[1]; Zhang, Menghua[1]; Wang, Jin[1]; Li, Ping[1]; Yu, Jianguo[1]

机构：[1] State Key Laboratory of Chemical Engineering, National Engineering Research Center for Integrated Utilization of Salt Lake Resources, East China University of Science and Technology, Shanghai, China

年份：2010

卷号：49

期号：21

起止页码：10297

外文期刊名：Industrial and Engineering Chemistry Research

收录：EI(收录号：20104513358128)

语种：英文

外文关键词：Computational fluid dynamics - Potash - Two phase flow - Potassium chloride - Productivity - Turbulence models - Navier Stokes equations - Structural frames - Impellers

摘要：A computational fluid dynamics (CFD) model was developed for the simulation and optimization of an existing continuous DTB crystallizer with KCl productivity of 0.1 million tons per year. The multiple reference frame (MRF) method was used in the CFD simulation. Both the hexagonal grid and the tetrahedral grid were adopted to divide meshes in this industrial DTB crystallizer, and in total 866 388 cells were used for CFD simulation. The fluid flow field in the DTB crystallizer was calculated using FLUENT6.3 software with the Reynolds-averaged Navier-Stokes equation combined with the widely used κ-Ε turbulence model. The crystal size distribution and the coefficient of variation of crystal product were studied by CFD simulation of two-phase flow model. The impeller shapes and various operating conditions were optimized to reduce the energy consumption of the crystallization process and to increase the KCl product quality. Based on the CFD optimization design, a new impeller was retrofitted into an existing continuous DTB crystallizer with the KCl productivity of 0.1 million tons per year located at Qinghai salt lake plant in China, and its excellent performance was confirmed against data collected using the original impeller. ? 2010 American Chemical Society.