CaO伴随生物质热裂解固体产物分析  

XRD and FTIR Analysis of the Pyrolysis Products of Biomass Accompanied by Cao

作　　者：林郁郁[1] 张楚[1] 张健[1] 章明川[1] 

机构地区：[1]上海交通大学机械与动力工程学院热能研究所,上海200240

出　　处：《工程热物理学报》2011年第12期2133-2136,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金资助项目(No.50676062)

摘　　要：对纯白松及CaO伴随白松热天平热解固体产物样品进行了XRD及FTIR分析。实验发现:1)CaO伴随样品的350℃终温产物中存在有机钙盐,此即被CaO直接固定的"类CO_2活性中间体";2)400℃终温产物中有机钙盐已显著分解,并生成易于再生的CaCO_3,进一步证实了"CaO化学链置换再线脱氧"的可行性。实验结果还表明:300℃以前主要是半纤维素的热解,400℃时纤维素结构基本上已被破坏,同时生物质的芳香化也大量发生。The XRD and FTIR analysis of solid residues from the pyrolysis of pure white pine and white pine accompanied by CaO in a TG apparatus was carried out by the authors. It was found from the analysis that： 1） some organic calcium salts appeared in the solid residues at the temperature of 350℃, which could be recognized ＂the active quasi-CO2 intermediates＂ directly fixed by CaO, and 2） the organic calcium salts would be apparently decomposed again before 400℃ to form the easily-regenerating CaCO3. This confirmed further the feasibility of CaO chemical looping replacement for in-situ deoxygenation of bio-oir. The experimental results showed also that： before 300℃, the liquid products originated mainly from hemicellulose rather than cellulose, the latter underwent its extensive destruction at 400℃, while the aromatization occurred greatly too.

关 键 词：生物质 热裂解 CAO 再线脱氧 富氧中间体 

分 类 号：TK16[动力工程及工程热物理—热能工程] TQ524[化学工程—煤化学工程]