摘要
针对某电厂燃煤种类多变而导致结焦严重状况,对煤粉分离装置进行改造并进行了数值模拟,采用RNG K-ε模型和颗粒轨道模型为理论模型,对改造前后进行分析得到了速度场和浓度分布,改造后有利于在向火侧得到更高的煤粉浓度,有利于燃烧,对于指导运行有一定的帮助。
According to the serious coking status caused by the multi kind coal and variation in a coal - fired power plant, a reconstruction and numerical simulation were made for the coal powder separation device. With the RNG K - ε model and the particle trace model as the theoretical model, the speed field and the density distribution were obtained from the analysis before and after the reconstruction. After the reconstruction, it was favorable to obtain the higher coal powder density at the firing side and it was favorable for the coal combustion which could provide the certain assistance to guide the operation.
出处
《煤炭工程》
北大核心
2009年第6期91-93,共3页
Coal Engineering
基金
辽宁工程技术大学校基金项目(08-201)
关键词
燃烧装置
浓淡分离
流动特性
combustion device
dense and thin separation
flow features
