2016年第12期（总第228期）
doi:10.3969/j. issn. 1009 3230.2016.12.001
应用能源技术
高水份褐煤在中速磨制粉系统中的应用
张伏叶
（西北电力设计院，西安710075）
摘要：印尼穆印2×150MW电厂的燃料为勘测煤质分析全水份高达55.3%的褐煤，这种煤质直接供给中速磨制粉系统在国内尚无设计运行的先例。文中介绍一种先将高水份褐煤预干燥再供给中速磨直吹式制粉系统的新型燃煤供应方式。给出了蒸汽管回转干燥系统对高水份褐煤的干燥流程并进行了干燥设备的选型，讨论了高水份褐煤中速磨直吹式制粉系统设计中磨煤机规格大、锅炉一次风率高及一次风温高的特点。采取了将煤干煤系统、制粉系统及锅炉然烧参数一起综合调试、消缺等措施解决运行初期因原煤被干燥过度导致煤气析出过多而出现的几个问题。几年来发电工程运行安全可靠，达到了设计要求。
关键词：高水份褐煤；制粉系统；中速磨；褐煤预干燥；综合调试
文献标志码：B文章编号：1009-3230(2016)12-0001-04
中图分类号：M621.7
ApplicationofHighMoistureLigniteinPulverizingSystem
ofMid-speedPulverizer
ZHANG Fu-ye
(NorthwestElectric PowerDesign Institute,Xi'an710075,China)
Abstract: This paper advanced an efficient lignite supply method of pre - drying high moisture lignite before pulverizing system of mid - speed pulverizer in fire coal power. The lignites Mt is up eeaass using pulverizing system of medium speed pulverizer in China before this power. The drying process of high moisture lignite using steam tube rotary drying system was introduced and the drying esa primary air temperature were discussed in the design of high moisture lignite medium - speed pulverizing system. Aiming at the problems of separating out excessive coal gas caused by excessive drying of lignite at the initial stage of operation, we are combining the coal drying system, the pulverizing system and the boiler combustion parameters and debugging together to eliminate these problem. The fact of the power operation safely and reliable for several years shows the method is effective and feasible.
Key words: High moisture lignite; Pulverizing system; Med speed Plverizer; Pe drying lignite; Cmprehensive debug
引言 0
在印尼穆印2×150MW电厂工程设计中，根
修订日期：201611-05
收稿日期：2016-10-21
作者简介：张伏叶（1964－），女，西北电力设计院，高级工程
师，研究方向为电站锅炉系统设计及优化。
万方数据
1
据原煤勘测煤质分析，煤的全水份为55.3%，可燃基挥发份为55.14%，此煤质具有水份极高，热值极低、灰份小的特点，属于较为年轻的褐煤。国内褐煤水份一般在15%~30%，个别也有达到 40%。国内尚无燃用全水份50%以上高水份褐