循环流化床转折区磨损实验研究

• 作 者: 马增益 严建华 相纪宏 潘国清 王飞 倪明江 岑可法
• 机 构: 浙江大学热能工程研究所
• 出 处: 中国电机工程学报
• 发表日期: 1998年01期
• 关键词: 循环流化床 磨损实验 受热面 床料 磨损速率 转折区 测量元件 磨损量 反向作用 增长曲线

本文应用磁控溅射工艺开发了镀膜式磨损测量元件，用来对循环流化床内存在的转折区磨损问题进行了实验研究。根据得到的磨损量增长曲线，循环流化床内受热面的磨损基本上以由沿壁面下滑的颗粒团引起的冲刷磨损为主；循环床内转折区的存在由于改变了边壁区下滑颗粒团的流向而引起颗粒团的反向作用力，其磨损速率大幅度上升。本文对不同运行风速、床料粒径、转折角角度的影响进行了对比研究。

In this paper, the magnetron sputtering process has been developed coating wear measuring element, used in the circulating fluidized bed transition zone wear problems were experimentally studied. According to the growth curve of the wear volume obtained, the wear of the heated surface in the circulating fluidized bed is basically dominated by the erosion caused by the particles moving down along the wall. The presence of the transition zone in the circulating bed changes the sliding state of the sliding particles The flow of particles caused by the group of the reverse force, the wear rate increased significantly. In this paper, the effects of wind speed, bed size and turning angle were compared.