水平管道粉气浓相输送最终固气速度比的理论研究  

THEORETIC STUDY OF FINAL GAS SOLID VELOCITY RATIO FOR POWDER GAS DENSE PHASE CONVEYING IN A HORIZONTAL TUBE

作　　者：郭培民[1] 张荣生[1] 刘浏[1] 佟溥翘[1] 

机构地区：[1]钢铁研究总院

出　　处：《钢铁》1999年第1期9-11,共3页Iron and Steel

基　　金：国家科委攀登计划资助项目

摘　　要：据“建立模型→数值计算结果→计算结果优化”原理，在水平管道输送煤粉的研究过程中，得到实际气体速度和最终固气速度比的显式函数关系式ｕａ＝２８２．５２×Ｑ０．９９２ｄ０．０１８ｓρ０．９２６ｇｍ０．９１２Ｄ２，ｍ＝０．４６６ｄｓ－０．２２４将临界最终固气速度比与临界输送速度联系起来：ｍ２＊／ｍ１＊＝ｕｃｓ１／ｕｃｓ２，进而得到水平管道中输送煤粉的气体临界输送速度和输送煤粉的最大粉气比的关系式ｕｃｓ＝８．１００ｄｓ０．２２４，ｍｍａｘ＜４９．１８５×Ｑ１．０８８ρ１．０１６ｇＤ２．１９３ｄ０．According to the principle “model established→calculated results→results optimized”,the explicit functions for real gas velocity and final gas solid velocity ratio are obtained respectively for the process of pulverized coal conveying in the horizontal tube u a=282 52×Q 0 992 ·d 0 018 sρ 0 926 g·m 0 912 ·D 2, φ m=0 466d s -0 224 Meanwhile,critical final gas solid velocity ratio is related to critical gas conveying velocity as follows:φ m2 /φ m1 =u cs1 /u cs2 The critical formula for gas conveying velocity and maximum ratio of powder to gas for conveying pulverized coal in the horizontal tube can be obtained respectively u cs =8 100d s 0 224 , m max <49 185×Q 1 088 ρ 1 016 g·D 2 193 ·d 0 226 s 

关 键 词：水平管道 煤粉 浓相输送 最终固气速度比 高炉 

分 类 号：TF538.63[冶金工程—钢铁冶金]