摘要
依托S02型磨煤机,对胜利5层褐煤开展试验研究及选型计算,提出了采用与胜利5层褐煤相匹配FM410.1300型风扇磨煤机,并按6+2进行配置,在单台磨煤机通风量满足BMCR负荷对给煤量干燥的要求时,风煤比为1.54。按照S02型磨煤机试验曲线得出的煤粉细度R90、制粉单耗、磨煤机通风量和提升压力,并对其修正后得到该风扇磨煤机的提升压力为1 594Pa。制粉系统管道阻力建议与该磨煤机提升压力相匹配。对小型S02型磨煤机和现场MB3600/1000/490型大型风扇磨煤机分别进行了胜利5层褐煤风扇磨煤机的选型计算,得出的磨煤机提升压力计算结果基本一致,表明依据小型S02型风扇磨煤机进行风扇磨煤机关键参数选型可行。
On the basis of the test research on Shengli lignite coal grinding and calculation about large fan mill type-selection,the method of fan mill type-selection was proposed for lignite with low calorific value, low grindability,high moisture and used in high altitude conditions.It suggested the FM410.1300 fan mill be adopted and configured in 6＋2 mode.When the ventilation volume of a single fan mill satisfies the re-quirements of coal dryness in BMCR load condition,the air coal ratio is 1.54.Furthermore,according to such parameters as coal fineness R90,pulverizing unit coal consumption,ventilation and booster pressure picked up in the commissioning curves of S02 mill,the corrected booster pressure of the FM410.1 300 fan mill is 1 594 Pa.The pipeline resistance is suggested to be matched with the corresponding booster pres-sure.Fan mill type selection calculation for small S02 mill and the field MB3600/1000/490 large scale fan mill was conducted respectively.The obtained booster pressure agrees well with each other,indicating u-sing the S02 fan mill to select the key parameters is reliable.
出处
《热力发电》
CAS
北大核心
2014年第12期95-98,135,共5页
Thermal Power Generation
关键词
锅炉
褐煤
风扇磨煤机
选型
通风量
提升压力
boiler
lignite
fan mill
type-selection
ventilation volume
boost pressure
