煤粉/生物质恒温混燃NO排放的协同特性  

Synergy Characteristics of NO Emission During Co-combustion of Coal and Biomass Blends at the Constant Temperatures

作　　者：王金星[1] 李伟[1] 王春波[1] 

机构地区：[1]华北电力大学能源动力与机械工程学院,河北保定071003

出　　处：《电力科学与工程》2012年第6期74-78,共5页Electric Power Science and Engineering

基　　金：教育部新世纪优秀人才支持计划(NCET-08-0770);中央高校基本科研业务费专项(重点)资金资助项目(11ZG12)

摘　　要：为探讨煤粉/生物质恒温混燃NO排放的协同特性,利用管式炉实验系统对煤粉/生物质恒温混燃进行实验,探讨了掺混比、温度及煤种等因素对其影响规律。研究表明,随着生物质掺混比的增加,燃烧初期的NO析出加快,NO排放曲线呈现的拐点前移,最终NO析出率降低,煤粉与生物质NO排放的协同作用增强;温度的升高总是有助于NO的生成。随着温度的升高,煤粉与生物质NO排放的相互作用逐渐减弱;掺混生物质,能够抑制挥发分含量高的煤种NO排放,对低挥发分含量煤种的NO排放表现出促进作用。The NO emission synergy characteristics of co-combustion of coal/biomass were studied by means of a designed experimental system that can permit the samples to be tested at pointed temperatures. The effects of blending ratio, temperature and coals on the synergy were studied. And, theory analysis and some conclusions were done through curves of NO emission. The more biomass blending ratios the faster NO emission at the initial stage and the fronter inflection point presented by NO emission curve and the lower NO emission ratio uhimately and the stronger the synergy of NO emission between coal and biomass; Elevating temperature always can enhance NO emission. With the rise of temperature, The NO emission synergy between coal and biomass gradually weaken; Blending biomass can restrains NO emission for coal with high volatile content, while that can promotes NO emis- sion for coal with low volatile content.

关 键 词：煤 生物质 混燃 NO 协同作用 

分 类 号：TK16[动力工程及工程热物理—热能工程]