摘要
湛江电厂3号300Mw机组锅炉设计煤种为晋东南无烟煤与贫煤的混煤，拟改烧烟煤，对此进行了热力计算，分析了改烧烟煤对锅炉安全性和经济性的影响。利用热重分析仪和一维沉降炉研究了煤粉细度对燃烧特性的影响，确定试烧期间合适的煤粉细度为15％～20％；提出了3号炉改造方案并进行了试烧，结果表明50％负荷下可无油稳定运行，锅炉热效率可提高2％。
The originally designed coal sort for boiler no. 3 of 300 MW unit in Zhanjiang Power Plant was blend coal of anthracitic coal and lean coal produced from South - east Shanxi Province,it is in- tended to convert the said boiler to burn bituminous coal,for this,the thermodynamic calculation has been carried out,and the influence of converting the boiler to burn bituminous coal upon safety and e- conomic efficiency of the boiler being analysed. The influence of pulverized coal fineness upon the com- bustion characters has been studied by using thermo - gravimetric analyser and one - dimentional subsi- ding furnace. It is determined that the suitable fineness of pulverized coal during trial firing period to be 15 %-20%. The retrofit scheme of boiler no. 3 has been put forward,and trial firing is carried out. Results show that the boiler can maintain oil - less and stable operation under load of 50 %, the thermal efficiency of boiler can be enhanced by 2 %.
出处
《热力发电》
CAS
北大核心
2009年第8期79-82,共4页
Thermal Power Generation
基金
国家自然科学基金资助(50721005)
粤电集团科技项目资助
关键词
300
MW机组
锅炉
热力计算
燃烧特性
贫煤
烟煤煤粉细度
300 MW unit
boiler
thermodynamic calculation
combustion characters
fineness of pulver- ized coal
