射流流化床体积效应对煤气化特性的影响  

Volume effects of fluidized bed on coal gasification

作　　者：侯学成[1] 邵明亚[1] 秦育红[1] 冯杰[1] 

机构地区：[1]太原理工大学煤科学与技术教育部和山西省重点实验室,山西太原030024

出　　处：《现代化工》2009年第S1期49-54,共6页Modern Chemical Industry

基　　金：国家"973"项目(2005CB22120102)

摘　　要：根据射流流化床内流体流动特性,在流体动力学行为相似的基础上,利用化学动力学软件Chemkin构建了射流床煤气化炉的动力学模型,通过体积放大引起物料停留时间及流体力学相似性的改变,研究其对射流床中物料特性的影响。分析了射流流化床几何相似放大与高径比减小放大对反应器特性的影响,认为等高径比放大停留时间较长,反应器内流体力学相似性较好,在后续工艺对出口组成要求较高时,采用此放大原则能满足要求。To find out the volume effects during the coal gasifier enlarging,a kinetic model of jetting fluidized bed is built based on the hydrodynamic likeness by Chemkin software package.Two kinds of reactor enlarging,constant slenderness ratio and similar reactor hydrodynamic,are analyzed to compare the features of feeder material,residence time of coal particle and syngas composition.The results show that constant slenderness ratio enlarged reactor has longer residence time and better dynamical similarity,meanwhile gives the outlet syngas composition in good agreement with original reactor.

关 键 词：体积效应 煤气化 动力学模型 

分 类 号：TQ541[化学工程—煤化学工程]