制粉系统防堵煤综合治理改造技术研究及工程实践  

Retrofitted Technology and Engineering Practice for the Coal Blockage Prevention in a Coal Fired Furnace

作　　者：成志红 李德波 李建波 冯永新 

机构地区：[1]广东珠海金湾发电有限公司,广东珠海519015 [2]广东电科院能源技术有限责任公司,广东广州510060

出　　处：《热能动力工程》2017年第11期109-112,共4页Journal of Engineering for Thermal Energy and Power

基　　金：国家自然科学基金重点项目(51376161)

摘　　要：本文通过分析某电厂制粉系统雨季堵煤的原因,提出使用降低给煤机出口煤流的速度的方法,并加大给煤机到磨煤机之间落煤管的距离,同时对磨煤机内部流动过程进行了三维数值模拟,获得了磨煤机内部风粉混合物运动的规律,达到了煤流顺利通过落煤管而不与内壁接触的目的,取得了良好的工程改造效果。Owing to the problems of the coal blockage in a coal-fired furnace in rainy day,some practical modifications are conducted in this paper.By decreasing the coal flow rate at the outlet of feeding coal device and increasing the pipe length between the feeding coal device and mill to a higher value to make the coal flow pass through the coal tube without contacting the inner wall,very good retrofitted effects are obtained in the practical operation considering the coal blockage.This is expected to serve as guidance for other power plants on the coal blockage prevention measures.

关 键 词：堵煤 煤流水平速度 落煤管 

分 类 号：TM621.2[电气工程—电力系统及自动化]