| 异构化反应改善小桐梓油生物柴油的低温流动性 |
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| 引用本文： | 李瑞丽,阳思远,刘瑛. 异构化反应改善小桐梓油生物柴油的低温流动性[J]. 化工进展, 2012, 31(4): 813-819,843 |
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| 作者姓名： | 李瑞丽 阳思远 刘瑛 |
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| 作者单位： | 中国石油大学（北京）重质油国家重点实验室,北京,102249 |
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| 摘 要： | 以小桐梓油生物柴油为原料,在固定床连续反应器中,以Hβ型分子筛为催化剂,采用异构化反应改善生物柴油的低温流动性。考察了反应温度、质量空速、助剂(水)加入量等不同条件对生物柴油低温流动性的影响。实验结果表明,催化剂选用硅铝比为25的Hβ分子筛的情况下,反应温度为250℃、质量空速为1.0 h-1、助剂加入量为1.2%为最佳反应条件,小桐梓油生物柴油在最佳反应条件下进行异构化反应,凝点从1℃降低到-5℃,降幅为6℃。对生物柴油和异构化产物进行了色谱、质谱、核磁共振等表征,结果发现,低温流动性改善的原因是生物柴油的主要成分油酸甲酯、亚油酸甲酯发生了异构化反应,产生了带支链的异构体。
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| 关 键 词： | 生物柴油 低温流动性 异构化反应 凝点 |
Isomerization to improve the low temperature fluidity of biodiesel from jatropha oil |
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| LI Ruili,YANG Siyuan,LIU Ying. Isomerization to improve the low temperature fluidity of biodiesel from jatropha oil[J]. Chemical Industry and Engineering Progress, 2012, 31(4): 813-819,843 |
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| Authors: | LI Ruili YANG Siyuan LIU Ying |
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| Affiliation: | (State Key Laboratory of Heavy Oil Processing of China University of Petroleum,Beijing 102249) |
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| Abstract: | The biodiesel from Jatropha oil was modified by Hβzeolite catalyst in a fixed bed reactor,and the improvement of low temperature fluidity was found.The best reaction condition is as follow:catalyst SAR is 25,reaction temperature is 250 ℃,WHSV is 1.0 h-1,addition(H2O)loading is 1.2%.The solidifying point of biodiesel was decreased by up to 6 ℃.The modified products were analyzed by NMR,GC-MS characterization.The reason for improved low temperature flow properties is the isomerization of the main components of biodiesel:methyl oleate,methyl linoleate,etc. |
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| Keywords: | biodiesel low temperature fluidity isomerization solidifying point |
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