中国电机工程学报Issue(11)：1735-1740,6.DOI:10.13334/j.0258-8013.pcsee.2014.11.003
中速磨煤机内风煤动态换热特性
Dynamic Heat Transfer Characteristics of Gas-solid in Medium Speed Mill
赵虹 1余海铭 1杨建国 1朱松强 2李文华 3樊立安 1陈理帅1
作者信息
- 1. 能源清洁利用国家重点实验室 浙江大学，浙江省 杭州市 310027
- 2. 浙江省能源集团有限公司，浙江省 杭州市 310007
- 3. 浙江浙能温州发电有限公司，浙江省 温州市325602
- 折叠
摘要
Abstract
Improving the medium speed mill outlet temperature has significant economy for power plant. The safety of the mixing process of gas-solid is the key factor to set the outlet temperature.The dynamic heat transfer characteristics of gas-solid in HP863 medium speed mill was studied with numerical simulation and performance tests. The temperature fields in the mill were analyzed by numerical simulation first, and then the critical region of heat transfer was obtained. The practical temperature fields inthe critical region were measured on a running mill. The comprehensive results show that the intense heat transfer concentrate in a rather small region after the mixing of hot air and pulverized coal. The gas-solid mixed temperature decrease 100℃ within about 60mm and 0.001s. The mixed temperature reduce to mill outlet temperature within 240mm after the mixing of hot air and pulverized coal.关键词
中速磨煤机/风煤换热/温度场/出口温度Key words
medium speed mill/heat transfer of gas-solid/temperature fields/outlet temperature分类
能源科技引用本文复制引用
赵虹,余海铭,杨建国,朱松强,李文华,樊立安,陈理帅..中速磨煤机内风煤动态换热特性[J].中国电机工程学报,2014,(11):1735-1740,6.
