CaO伴随生物质热裂解固体产物分析

• 作 者: 林郁郁 张楚 张健 章明川
• 机 构: 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
• 发表日期: 2011年12期
• 关键词: biomass pyrolysis CaO in-situ deoxygenation active quasi-CO2 intermediates

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CO2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CaCO3，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.