煤质对超临界600MW机组调峰特性影响的试验研究  

Experimental study on effects of coal property on peak load regulation characteristics of a supercritical 600MW unit

作　　者：雷霖[1] 焦庆丰[1] 张栋梁 

机构地区：[1]湖南省电力公司科学研究院,湖南长沙410007 [2]株洲华银火力发电有限公司,湖南株洲412000

出　　处：《热力发电》2013年第8期55-58,共4页Thermal Power Generation

摘　　要：对某超临界600MW机组锅炉不同煤种下的机组调峰特性进行了现场试验研究。结果表明:入炉煤质的变化对机组调峰的深度、幅度、速度均有着较为明显的影响;煤质发热量对锅炉的带负荷能力影响较大,发热量越高,机组带负荷能力越强;煤质挥发分对机组的调峰深度和速度影响较大,挥发分越低,煤粉的着火和稳燃性越差;为保证机组调峰性能及运行经济性,应保证入炉煤低位发热量大于18 500kJ/kg,干燥无灰基挥发分高于15%。Field test was conducted on unit peak load regulation characteristics of a supercritical boiler under different fuel conditions.The results showed that,the depth,range and speed of the peak load regulation for this supercritical 600 MW boiler were obviously affected by the coal property;the larger the calorific value of the coal,the stronger the unit load capacity;the lower the volatile content in coal,the worse the ignition and combustion stability of coal;to ensure the unit peak load regulation performance and the economic operation,low heating value of the coal should be higher than 18 500kJ/kg,and the dry ash-free volatile content should be larger than 15%.

关 键 词：超临界机组 锅炉 煤质 发热量 挥发分 调峰特性 

分 类 号：TK227[动力工程及工程热物理—动力机械及工程]