循环流化床锅炉燃用贫煤和无烟煤的运行优化分析  

OPERATIONAL OPTIMIZATION OF CFB BOILER BURNING LEAN COAL AND ANTHRACITE

作　　者：张庆国[1] 程新华[1] 杨海瑞[2] 吕俊复[2] 刁友峰 陈宇峰 郝卫东[1] 

机构地区：[1]山东电力研究院,山东济南250002 [2]清华大学热能系,北京100084 [3]华电淄博热电有限公司,山东淄博255054

出　　处：《热力发电》2009年第4期39-43,共5页Thermal Power Generation

基　　金：国家科技支撑计划(2006BAA03B02-07)

摘　　要：通过运行优化,能够使循环流化床(CFB)锅炉燃用低挥发分贫煤和无烟煤的飞灰含碳量控制在10%以内。分析了贫煤循环流化床锅炉燃料粒径分布,床压和一、二次风率对飞灰含碳量的影响。在燃用低挥发分贫煤和无烟煤时,控制入炉煤中小于100μm的颗粒所占比例,采用较低的床压和增加二次风的混合可降低飞灰含碳量。The factors impacting carbon content in fly ash of the CFB boiler burning low volatile bean coal and anthracite, such as distribution of coal granules fed, bed pressure, primary secondary air fractions,are analyzed. It is found that controlling the fraction of the particles under 100 μm in feeding coal, lowering the bed pressure, and enhancing secondary air blending can all help to decrease the carbon content in fly ash of the CFB boiler burning low volatile lean coal and anthracite. By operational optimization,the carbon content in fly ash of this CFB boiler can be controlled below 10%.

关 键 词：循环流化床锅炉 贫煤 无烟煤 飞灰含碳量 床压 一、二次风率 

分 类 号：TK227[动力工程及工程热物理—动力机械及工程]