摘要
生物质燃料在燃烧过程中燃料氮会转化为NO释放,而生物质中绝大部分的燃料氮在热解过程中以挥发分氮的形式释放,因此挥发分氮对于NO的生成极为重要。为探究生物质挥发分燃烧生成NO的规律,在水平管式炉反应器及Chemkin仿真模拟上研究了不同生物质、不同温度、不同氧浓度对挥发分NO生成的影响。试验结果表明:生物质含氮量越高,挥发分NO的转化率越低;挥发分NO的转化率随温度上升先增加,在800℃达到峰值后略微减小;氧浓度越高,挥发分NO的转化率越高。该结论有助于理解生物质挥发分燃烧生成NO的规律,对采取合理措施降低NO排放有积极意义。
In the combustion process of biomass fuel,fuel nitrogen will be converted to NO release,and most of the fuel nitrogen in biomass is released in the form of volatile nitrogen in the pyrolysis process,so volatile nitrogen is extremely important for the generation of NO.In order to explore the rule of biomass volatiles combustion to produce NO,the influence of different biomass,different temperature and different oxygen concentration on the formation of NO was studied in a horizontal tube furnace reactor and Chemkin simulation.The test results show that the higher the biomass nitrogen content is,the lower the volatiles NO conversion rate is.The conversion rate of volatile NO initially increases with the rise of temperature,and then decreases slightly after reaching a peak at 800℃.The higher the oxygen concentration is,the higher the conversion rate of NO is.This conclusion is useful for understanding the law of generating NO from the volatile combustion of biomass,and it is of positive significance for taking reasonable measures to reduce NO emissions.
作者
马毓聪
骆仲泱
杨旭东
余春江
MA yu-cong;LUO Zhong-yang;YANG Xu-dong;YU Chun-jiang(State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China)
出处
《能源工程》
2021年第5期43-48,78,共7页
Energy Engineering
基金
国家自然科学基金委员会与美国国家科学基金会合作项目(51661125012)。
关键词
生物质
挥发分
NO
温度
氧浓度
biomass
volatiles
NO
temperature
oxygen concentration
