Scale-up effect analysis and modeling of liquid-solid circulating fluidized bed risers using multigene genetic programming  

作　　者：Shaikh A.Razzak Saddam A.AI-Hammadi Syed M.Rahman Mohammad R.Quddus Mohammad M.Hossain Jesse Zhu 

机构地区：[1]Department of Chemical Engineering,King Fahd University of Petroleum&Minerals,Dhahran 31261,Saudi Arabia [2]Center for Environment&Water,RI,King Fahd University of Petroleum&Minerals,Dhahran 31261,Saudi Arabia [3]Department of Chemical and Biochemical Engineering,University of Western Ontario,Canada

出　　处：《Particuology》2020年第5期57-66,共10页颗粒学报（英文版）

基　　金：support provided by King Abdulaziz City for Science and Technology(KACST)through the Science&Technology Unit at King Fahd University of Petroleum&Minerals(KFUPM)for funding of this work,project No.NSTIP#13-WAT96-04,as part of the National Science,Technology and Innovation Plan.

摘　　要：Understanding scale-up effects on the hydrodynamics of a liquid-solid circulating fluidized bed(LSCFB)unit requires both experimental and theoretical analysis.We implement multigene genetic programming(MGGP)to investigate the solid holdup and distribution in three LSCFB systems with different heights.In addition to data obtained here,we also use a portion of data sets of LSCFB systems developed by Zheng(1999)and Liang et al.(1996).Model predictions are in good agreement with the experimental data in both radial and axial directions and at different normalized superficial liquid and solid velocities.The radial profiles of the solid holdup are approximately identical at a fixed average cross-sectional solid holdup for the three LSCFB systems studied.Statistical performance indicators including the mean absolute percentage error(6.19%)and correlation coefficient(0.985)are within an acceptable range.The results suggest that a MGGP modeling approach is suitable for predicting the solid holdup and distribution of a scaled-up LSCFB system.

关 键 词：FLUIDIZATION Liquid-solid circulating fluidized bed Multigene genetic programming Scale-up effect Normalized superficial liquid velocity Solid holdup 

分 类 号：TQ051.13[化学工程]