Fast Pyrolysis of Lignin Using a Pyrolysis Centrifuge Reactor
Fast Pyrolysis of Lignin Using a Pyrolysis Centrifuge Reactor
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DOI：
10.1021/ef400527k
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发表时间：
2013-06
期刊：
影响因子：
5.3
通讯作者：
T. N. Trinh;P. Jensen;Z. Sárossy;K. Dam‐Johansen;N. O. Knudsen;H. R. Sørensen;H. Egsgaard
中科院分区：
文献类型：
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作者：
T. N. Trinh;P. Jensen;Z. Sárossy;K. Dam‐Johansen;N. O. Knudsen;H. R. Sørensen;H. Egsgaard
在实验室规模的热解离心机上对乙醇厂木质素的快速热解进行了研究，考察了热解温度、反应器气体停留时间和进料速度对热解速度的影响。在温度为5 0 0~5 5 0℃、反应器气体停留时间为0.8 S、进料速度为5.6g/min的条件下，有机油产率最高为34wt%干基(Db)，生物油产率为4 3wt%db。用气相色谱、质谱仪和尺寸排除层析法对木质素油的化学性质进行了表征。醋酸、左旋葡聚糖、愈创木酚、丁香醇和对乙烯基愈创木酚是木质素油的主要化学成分。丁香酚、对乙烯基愈创木酚和愈创木酚的最大产率分别为0.62、0.67和0.38wt%db。在450-600℃范围内考察了反应器温度的影响，并对观察到的木质素油的化学成分和分子质量分布有相当大的影响。制得的木质素油具有明显不同的性质。
Fast pyrolysis of lignin from an ethanol plant was investigated on a lab scale pyrolysis centrifuge reactor (PCR) with respect to pyrolysis temperature, reactor gas residence time, and feed rate. A maximal organic oil yield of 34 wt % dry basis (db) (bio-oil yield of 43 wt % db) is obtained at temperatures of 500–550 °C, reactor gas residence time of 0.8 s, and feed rate of 5.6 g/min. Gas chromatography mass spectrometry and size-exclusion chromatography were used to characterize the chemical properties of the lignin oils. Acetic acid, levoglucosan, guaiacol, syringols, and p-vinylguaiacol are found to be major chemical components in the lignin oil. The maximal yields of 0.62, 0.67, and 0.38 wt % db were obtained for syringol, p-vinylguaiacol, and guaiacol, respectively. The reactor temperature effect was investigated in a range of 450–600 °C and has a considerable effect on the observed chemical components and molecular mass distribution of the lignin oils. The obtained lignin oil has a very different co...