复合式流化床冷渣器的试验研究及工业应用  

Experimental Studies and Application of a Composite Fluidized Bed Bottom Ash Cooler

作　　者：曾兵[1] 卢啸风[1] 赵鹏[1] 甘露[1] 舒茂龙 

机构地区：[1]低品位能源利用技术及系统教育部重点实验室(重庆大学),重庆市沙坪坝区400044 [2]浙江国华浙能发电有限公司,浙江省宁波市315612

出　　处：《中国电机工程学报》2011年第29期27-34,共8页Proceedings of the CSEE

摘　　要：提出一种新型流化床冷渣器,介绍了其主要技术特点,并对其气固流动特性进行冷态试验研究。试验结果表明,分选仓喷动床结构对锅炉底渣的粗细颗粒分选作用相当明显,灰渣颗粒整体呈"溢流–底流–溢流"方式有较好的流动特性。分选仓分选效果直接决定着该冷渣器的运行效果,可以通过调节运行参数和结构参数来控制。根据试验结果设计的复合式流化床冷渣器已成功应用于某300MW循环流化床机组冷渣器改造中。工业应用结果表明,该冷渣器具有较好的底渣冷却效果和粗细颗粒分选效果,底渣粒度适应性强,最大出力超过30t/h。复合式流化床冷渣器可作为未来大型循环流化床锅炉冷渣器的发展方向之一。A novel fluidized bed bottom ash cooler and the main technical characteristics are introduced. Experiments about gas-solid flow characteristics were conducted in a cold test bed. The experiment results show that the separation chamber has a good separation effect on the boiler bottom ash, and the ash flow characteristic is also good. The separation effect has a direct influence on the operation results of the new ash cooler and can be regulated by adjusting the operation and structure parameters. According to the experiment results, the composite fluidized bed bottom ash cooler （CFBAC） has been industrially applied in a 300MW circulating fluidized bed （CFB） unitl The application results show that the CFBAC has a good cooling effect of bottom ash, a well separation effect, an excellent adaptability on particle size and a large discharge capacity over 30 t/h. The CFBAC could be one direction of the future CFB boiler bottom ash cooler.

关 键 词：循环流化床 冷渣器 气固流动特性 分选特性 工业应用 大型化 

分 类 号：TK229.6[动力工程及工程热物理—动力机械及工程]