淡一次风扩口角度对径向浓淡旋流煤粉燃烧器出口流场影响的试验研究.PDFVIP

20 3 Vol. 20 No. 3 2000 3 Proceedings of the CSEE Mar . 2000 (2000) 03005 05 秦裕琨, 王 磊, 李争起, 宋资勤, 郝金波, 吴少华 ( 哈尔滨工业大学能源科学与工程学院, 黑龙江省哈尔滨市150001) EFFECTS OF LEAN PRIMARY AIR OUTLETANGLE ON CHARACTERISTICSOF GAS PARTICLE TWOPHASE FLOWS OF THE RADIAL BIASCOMBUSTION SWIRL BURNER Q IN Yukun, WANG Lei, LI Zhengqi, SONG Ziqin, HAO Jinbo, WU Shaohua ( School of Energy Science and Engineering, Harbin Institute of T echnology,Harbin 150001, China) ABSTRACT: In this paper a new kind of sw irl pulverized coal burner, Radial Bias Combustion swirl burner( RBC) , is intro , , duced. A pulverized coal concentrator is set in the primary air ; , passage, and the primary air is separated into tw o parts, one has the higher concentration of particles than another, since the ; , fuel rich jet owns a stronger flame stability and the over all sto , ichimet ric ratio is the same as an ordinary swirl burner, pulver , ized coal combustion w ill have good flame stability , lower NOx [ 1] emission and high efficiency . The velocity and turbulent kinetic energy of airparticle diameter and particle concentration of the , burner under different angle of lean primary air outlet are mea , : , sured by a PhaseDoppler Particle Dynamic Analyzer ( PDA) , , , , and effects of lean primary air outlet angle on the RBC are ana lyzed. The results provide reference for industry application and optimum design. , [ 2] KEY WORDS: swirl burner; gasparticle two phase flow s; Par , ticle Dynamic Analyzer; bias combustion ,