高效燃用生物质成型燃料新型炉膛的设计与研究  

Design and research on new furnace burning biomass briquette fuel with high efficiency

作　　者：管泽运 刘圣勇[1,2] 翟万里[1] 王鹏晓[1] 夏许宁 刘洪福[1] 

机构地区：[1]河南农业大学农业部农村可再生能源重点开放实验室,河南郑州450002 [2]生物质能源河南省协同创新中心,河南郑州450002

出　　处：《可再生能源》2016年第5期786-790,共5页Renewable Energy Resources

基　　金：河南省科技创新杰出人才计划项目(144200510015);郑州市科技创新团队项目(131PCXTD588)

摘　　要：针对我国生物质锅炉燃烧效率低、积灰结渣严重的问题,设计了一种高效燃用生物质成型燃料的新型炉膛结构。为判断新型炉膛的运行水平,将该炉膛应用在额定蒸发量为1 t/h、额定蒸汽压力为1.25 MPa的蒸汽链条锅炉上,在8个不同过量空气系数(αpy)下,与传统炉膛进行燃烧效率、炉膛出口烟温、炉膛出口含氧量的对比试验研究。结果表明,在αpy=1.5时,新型炉膛的燃烧效率为97.04%,炉膛出口烟气温度为799℃,炉膛出口含氧量为5.2%,性能明显优于对比锅炉,证实设计的新型炉膛能实现生物质燃料稳定、持续、高效的燃烧。Aiming at the problem of low combustion efficiency and serious fouling of the biomass boiler in China,a new type of furnace structure was proposed. To determine its operational level, the new furnace structure was applied to a steam boiler which rated evaporation was 1 t/h and rated steam pressure was 1.25 MPa. In eight different excess air factor（αpy）,compared with traditional furnace of combustion efficiency,furnace outlet flue-gas temperature and furnace outlet oxygen concentration.Actual performance tests show that the new furnace combustion efficiency is 97.04%,the flue-gas temperature is 799 ℃,the oxygen concentration is 5.2% when the αpyis 1.5. The thermal performance is much better than contrast boiler. These studies confirm that the new design is suitable for biomass fuel stable and highly efficient combustion.

关 键 词：炉拱的设计 二次风的设计 燃烧效率 炉膛出口烟温 炉膛出口含氧量 

分 类 号：TK222[动力工程及工程热物理—动力机械及工程]