作　　者： ; ; ; ; ;

机构地区： 中国科学院广州能源研究所可再生能源与天然气水合物重点实验室

出　　处： 《可再生能源》 2014年第5期680-686,共7页

摘　　要： 利用松木生物油和尿素制备了富氮生物油,对富氮生物油的主要物理性质进行了测定,利用气质联用仪对其化学组成进行了分析,借助热重红外仪重点分析了富氮生物油的热分解特性以及主要热解产物的释放规律,并与生物油的热解特性进行了比较。理化分析表明,由于富氮生物油制备过程中发生的聚合反应使其中的小分子有机化合物含量减少,运动粘度增大。富氮生物油热解经历轻质组分的挥发和重质组分的解聚或缩聚两个失重阶段,富氮生物油中重质组分含量的增加导致其最终的热解残渣量增加。热解产物的红外光谱分析表明,富氮生物油热解过程中释放出NH3,有利于富氮生物油的再燃脱硝。 Nitrogen-enriched bio-oil （Noxoil） was prepared by adding urea into bio-oil , and producedfrom fast pyrolysis of pine. The physical properties of Noxoil consisting of water content, viscosity, high-er heating value, and pH were determined, and the chemical composition was analyzed by Gas Chro-matography/Mass Spectrometry （GC/MS）. The pyrolysis experiment of Noxoil was carried out by thethermogravimetric analyzer coupled with Fourier Transform Infrared Spectroscopy （TG-FTIR）. Thisstudy focused on investigating the pyrolysis behavior of Noxoil and the evolution of volatile pyrolysisproducts. A comparison of pyrolysis behavior of Noxoil and bio-oil was also made. Noxoil exhibitedlower content of lightweight organic compounds and the enhanced kinematic viscosity compared withbio-oil, which could be ascribed to the polymerization reaction in the preparation of Noxoil. Two stagesof mass loss could be observed in the pyrolysis of Noxoil. The first stage was the volatilization oflightweight components, and the second stage was the depolymerization and polycondensation of heavycomponents. The final pyrolysis residue was increased due to the enhanced heavy components contentsin Noxoil. The on-line FITR analysis indicated that NH3 was released in the pyrolysis of Noxoil, whichcould be favorable to the reduction of nitrogen oxides.

关 键 词： 富氮生物油 理化性质 热解特性 气质联用 热重红外

领　　域： [动力工程及工程热物理] [农业科学] [农业科学]