振动流化床冷渣器试验研究  

INVESTIGATION INTO AN INNOVATIVE VIBRATION FLUIDIZED BED ASH COOLER

作　　者：段钰锋[1] 刘安源[1] 章名耀[1] 姚志彪[1] 唐惠芬[1] 刘前鑫[1] 钱瑞明 

机构地区：[1]东南大学热能工程研究所,南京210096

出　　处：《工程热物理学报》1998年第4期504-508,共5页Journal of Engineering Thermophysics

摘　　要：本文提出了冷却高温炉渣的振动流化床技术，研制了集连续可控排放和冷却于一体的新型冷渣器工业装置．采用物理性质相异法较系统地研究了冷渣器内宽筛分物料的停留时间分布．对气固两相流的空气动力学特性和热态运行工况进行了试验研究和理论分析．结果表明，在风渣比为1．5～2．5Nm3／kg时，冷渣器的热回收率达到85％以上．An innovative technology of vibration fluidized bed which is used to cool bed ash drained from an FB boiler was proposed in this paper. A newly designed ash cooler that can drain and cool the bed ash continuously and controllably has been put into use in a 35t/h FB boiler.The particle residence time distribution (RTD) with various particle diameters in the ash cooler was studied using traces with different physical properties from the test particles. The hydrodynamics of the gas solid flows and heat operation performance were also investigated.The heat recovery efficiency over 85% was obtained under condition of a lower ratio of air to ash between 1.5~2.5 Nm3/kg.

关 键 词：振动 流化床 锅炉 冷渣器 过续排渣 冷却 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程]