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《IRON AND STEEL》 1999-01
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THEORETIC STUDY OF FINAL GAS SOLID VELOCITY RATIO FOR POWDER GAS DENSE PHASE CONVEYING IN A HORIZONTAL TUBE

GUO Peimin ZHANG Rongsheng LIU Liu TONG Puqiao (Central Iron and Steel Research Institute)  
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 
【Fund】: 国家科委攀登计划资助项目
【CateGory Index】: TF512
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