1025t/h褐煤富氧燃烧锅炉制粉系统设计与分析  

Design and analysis of coal pulverizing system of a 1025t/h oxy-lignite fired boiler

作　　者：高建强[1] 汪宁[1] 王玉兰[1] 

机构地区：[1]华北电力大学能源动力与机械工程学院,河北保定071003

出　　处：《热力发电》2015年第2期106-109,共4页Thermal Power Generation

基　　金：河北省自然科学基金资助项目(F2012502068)

摘　　要：以某燃用高水分、低硫褐煤的1 025t/h富氧燃烧锅炉制粉系统为例,采用干燥后的一次再循环烟气作为干燥剂,对制粉系统流程和磨煤机选型进行了设计和分析,并通过热力计算,确定了磨煤机出口煤粉温度、煤粉水分等参数值。结果表明:MPS200HP-Ⅱ型磨煤机能够满足高水分褐煤富氧燃烧锅炉制粉系统的需要,原煤水分变化对磨煤机出口煤粉温度、煤粉水分含量的影响较大。By taking the coal pulverizing system of a 1 025t/h oxy-fuel boiler firing lignite with high moisture and low sulfur as an example,process flow of the coal pulverizing system and mill type selection were designed,using the first flue gas recirculation as the desiccant.Moreover,thermal dynamic calculation was carried out to ascertain parameters values like the coal temperature and moisture at mill outlet.The results show that,the MPS200HP-Ⅱtype mill can satisfy the requirements of coal pulverizing system in oxy-coal combustion boilers which fire high-moisture lignite.Variation of moisture in raw coal has great influence on temperature and moisture of the pulverized coal at the mill outlet.

关 键 词：1 025t/h锅炉 富氧燃烧 制粉系统 磨煤机 高水分 褐煤 再循环烟气 

分 类 号：TK223.23[动力工程及工程热物理—动力机械及工程]