生物质气化再燃技术中焦油的利用  

Utilization of Tar in Biomass Gasification Reburning Process

作　　者：张睿智[1] 罗永浩[1] 刘春元[1] 段佳[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海市闵行区200240

出　　处：《中国电机工程学报》2010年第17期98-103,共6页Proceedings of the CSEE

基　　金：国家高技术研究发展计划项目(863计划)(2008AA05Z312)~~

摘　　要：针对生物质气化再燃技术路线中焦油的价值及利用开展研究。通过热重-质谱联用仪分析典型农业废弃物在热解、气化过程中焦油组分的析出情况,并在管式流动实验台上研究焦油在生物质气化气还原NO中的作用以及焦油还原NO受当量比、温度等因素的影响规律,最后建立了甲苯还原NO的机制模型,并以停流动实验台的实验结果进行了验证。结果表明:苯、甲苯、苯乙烯和苯酚是具有代表性的焦油组分;焦油对生物质气化气还原NO有积极的作用;焦油组分还原NO存在最佳的当量比,并要求合适的温度窗口,需要关注聚合反应;甲苯还原NO机制(NO reduction by toluene,NRT)模型与实验结果拟合良好,模型的生成速率和消耗速率分析显示HCCO和C2H在焦油还原NO中具有重要作用。The utilization of tar in the process of biomass gasification reburning was investigated.The tar components released during the pyrolysis and gasification of typical agricultural wastes were analyzed on the TG-MS （thermogravimetry and mass spectrometry） system.And the effect of tar on the NO reduction by biomass gasification syngas was studied on a flow reaction system,as well as the effect of the parameters such as bulk equivalence ratio and temperature.Finally,the model of NO reduction by toluene was built,and verified by the results from the stop-flow reaction system.The results show that benzene,toluene,styrene and phenol are typical components of tar.Tar has a positive influence on the NO reduction by biomass syngas,and there＇s a suitable environment,including bulk equivalence ratio,temperature and so on,that makes the reduction most efficient.The polymerization should be concerned.The NRT （NO reduction by toluene） model simulates the experimental results well,and HCCO and C2H seem to be important to the NO reduction.

关 键 词：生物质 气化 再燃 焦油 模型化合物 机制模型 

分 类 号：TK6[动力工程及工程热物理—生物能]