摘要
采用NBW-A-1000生物质燃烧及后处理分析试验系统对微藻与木屑成型燃料在不同温度、不同配比混燃时SO_(2)与NO排放特性进行在线测量,分析不同条件下SO_(2)与NO的瞬时排放浓度及S、N转化率。结果表明:与微藻相比,木屑单独燃烧时SO_(2)与NO瞬时析出浓度峰值非常小,析出峰出现的时间较迟;随着混合微藻比例的增大,SO_(2)的生成量和S转化率不断增大,NO的生成量和N转化率先增大最后趋于稳定;混合成型燃料在600~900℃燃烧时,SO_(2)与NO析出瞬时浓度曲线均呈单峰结构,温度达到900~1000℃时,SO_(2)与NO析出瞬时浓度曲线呈双峰结构,且随温度的升高,S转换率持续上升。根据生物质成型燃料污染物排放标准,结合燃烧品质要求,微藻与木屑混合成型燃料的最佳微藻配比与燃烧温度分别为10%、800℃,该条件下SO_(2)与NO的析出瞬时浓度峰值分别为36.80、90.80 mg/m^(3)。
The NBW-A-1000 biomass combustion and post-treatment analysis test system was used to measure the emission characteristics of SO2 and NO in microalgae and sawdust molding fuels online at different temperatures and ratios of mixed combustion.The instantaneous emission concentrations of SO_(2) and NO and the conversion rates of S and N under different conditions were analyzed.The results showed that compared with microalgae,the peak concentration of SO_(2) and NO in the combustion of sawdust was very small,and the peak of precipitation appeared later.As the proportion of mixed microalgae increased,the amount of SO_(2) and S conversion increased.The production amount of NO and the conversion rate of N first increase and finally stabilize.When the mixed molding fuel is burned at 600-900 ℃,the instantaneous concentration curves of SO_(2) and NO precipitation have a single peak structure,and the temperature reaches 900-1000 ℃.The instantaneous concentration curve of SO_(2) and NO precipitated into a bimodal structure,and the S conversion rate continued to rise as the temperature increased.According to the emission standard of biomass forming fuel pollutants,combined with the requirements of combustion quality,the optimum microalgae ratio and combustion temperature of microalgae and wood chips mixed fuel are 10% and 800 0 C respectively,and the instantaneous concentration of SO_(2) and NO is precipitated under this condition.The peak values are 36.8 mg/m^(3) and 90.80 mg/m^(3),respectively.
作者
岳泰安
杨俊红
杜宇航
雷万宁
黄涛
白超
Yue Taian;Yang Junhong;Du Yuhang;Lei Wanning;Huang Tao;Bai Chao(Key Laboratory of Efficient Utilization of Low and Medium Grade Energy,MOE,School of Mechanical Engineering,Tianjin University,Tianjin 300072,China;Xi'an Raising Urban Heating Develop Group Co.Ltd.,Xi'an 710100,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2021年第7期450-455,共6页
Acta Energiae Solaris Sinica
基金
天津市自然科学基金(13JCYBJC19000)。
