低浓度可燃废气作为辅助燃料在燃煤锅炉中的应用研究  

Applied Study of Low Concentration Combustible Waste Gases Serving as an Auxiliary Fuel in a Coal-fired Boiler

作　　者：邓磊[1] 王一坤[1] 车得福[1] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,陕西西安710049

出　　处：《热能动力工程》2010年第3期287-291,357,共6页Journal of Engineering for Thermal Energy and Power

基　　金：国家863计划基金资助项目(2006AA05Z244)

摘　　要：提出了一种低浓度(0.1%～1.0%)可燃废气应用于燃煤锅炉的方法,基于物质平衡、热平衡和热量传递,分析了可燃废气对锅炉热工参数的影响。结果表明,低浓度可燃废气作为辅助燃料送入燃煤锅炉中,无需对锅炉系统进行改造,几乎不影响锅炉运行,但能有效地节省燃煤,回收可燃废气的热量,同时减少温室气体甲烷的排放。随着可燃废气体积浓度增大,炉膛辐射换热略有增强,对流受热面换热相应减弱。以一台600MW锅炉为例,体积浓度为1.0%的烃类废气代替燃烧用空气后,锅炉热效率提高了0.5%,燃煤消耗量减少了25.4%。A method for using low-concentration (0.1% to 1.0%) combustible waste gases in coal-fired boilers was presented. Based on mass balancing,heat balance and transfer,the influence of the combustible waste gases on the boiler thermodynamic parameters was analyzed. It has been found that when the low concentration combustible waste gases are fed into a coal-fired boiler as an auxiliary fuel,there is no need to reconstruct the boiler system and its operation is hardly affected. However,it can effectively save coa...

关 键 词：低浓度可燃废气 辅助燃料 燃煤锅炉 热工参数 

分 类 号：TK227[动力工程及工程热物理—动力机械及工程]