循环流化床锅炉J阀结构参数对回料量影响的冷态试验研究及应用  

Experimental Investigation and Technological Renovation of J-Valve About the Effects of Solids Flow Rate on Structural Parameters in a CFB Boiler

作　　者：李海广[1] 于忠义 李可崴 赵增武[1] 李保卫[1] 武文斐[1] 

机构地区：[1]内蒙古科技大学 [2]内蒙古包头第一热电厂

出　　处：《电站系统工程》2011年第5期8-10,共3页Power System Engineering

基　　金：国家973计划前期项目(2010CB635105);国家自然科学基金项目(50964011)

摘　　要：在循环流化床冷态试验台上,开展了J阀结构参数对于回料量影响的试验研究。试验表明,在相同回料风量下,J阀循环室高度降低,有利于提高回料量,循环室与支持室通道高度在一定范围内改变,不会影响到回料量,只是在通道高度比较低时,对于回料量产生影响。根据试验结果,对包头第一热电厂DG470/9.71-1循环流化床锅炉J阀,进行了技术改造,降低循环室高度274 mm,解决了该锅炉常出现的J阀回料不畅、振动等问题,确保锅炉安全经济运行。Solids flow through a J-valve in a circulating fluidized bed（CFB） was studied in an experimental setup in which the effects of structural parameters could be investigated.The results show that solids flow rate increases with the decrease of recycle chamber height.The change of opening height in a small extent between recycle chamber and supply chamber will not affect solids flow rate unless a pronounced decrease.In accordance with the experimental investigation results,technical renovation of the J-valve of a 470 t/h boiler was carried out with recycle chamber height decreased 274 mm to solve the operation problems in the BaoTou No.1 Power Plant.

关 键 词：循环流化床锅炉 技术改造 J阀 结构参数 

分 类 号：TK229.66[动力工程及工程热物理—动力机械及工程]