熔盐热裂解大豆油的特性研究

章国栋; 于凤文; 高龙超; 王玮瑾; 卢美贞; 计建炳

熔盐热裂解大豆油的特性研究

浙江工业大学化学工程与材料学院浙江省生物燃料利用技术研究重点实验室, 浙江杭州 310032

基金项目: 教育部博士点基金(20103317110001);浙江省生物质能清洁利用创新团队自主设计项目(2009R50012)。

详细信息

通讯作者:
于凤文(1967- ),女,辽宁鞍山人,博士,教授,主要从事生物质裂解和资源化的研究;E-mail:yufw@zjut.edu.cn。

中图分类号: TK6
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出版历程
- 收稿日期: 2013-03-25
- 修回日期: 2013-05-04
- 刊出日期: 2013-11-30

Pyrolysis of soybean oil with molten salt for bio-fuel

Zhejiang Province Key Laboratory of Biofuel, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China

摘要

摘要: 以大豆油为原料,在ZnCl₂-KCl熔融盐体系中考察了进料速量、载气流量、反应温度及进料量对其热裂解的影响。采用气相色谱-质谱联用仪(GC-MS)表征生物油组成。结果表明,进料速量和载气流量主要通过改变大豆油的反应停留时间影响裂解效果。当进料速率为1.2 g/min及不通载气时,大豆油停留时间较长,裂解较充分;随着温度升高,生物油得率增大,含氧化合物含量及酸值上升;随着进料量增大,生物油得率稳定在70%左右,但脱羧效果有所下降。经过催化加氢,生物油性质得到了明显的改善,组分分布与0^#柴油分布大体相似。
- 大豆油 /
- 裂解 /
- 熔盐 /
- 加氢
Abstract: Pyrolysis of soybean oil was carried out in a ZnCl₂-KCl molten salt. The effects of feed rate, flow rate of carrier gas, pyrolysis temperature and input quantity were studied. And the compositions of the bio-oil were analyzed by GC-MS. The results show that the feed rate and carrier gas flow rate have great influences on the pyrolysis by changing the reaction residence time of soybean oil. When the feed rate is 1.2 g/min and without the carrier gas, the soybean oil can be fully cracked with the longer residence time. The gasification of the primary pyrolysis products is enhanced with the increasing of temperature, which leads to the yield, the content of oxygenated compounds and the acid value of bio-oil increase. With the increasing of input quantity, the yield of bio-oil is near 70% and keeps stable, but the decarboxylation effect decreases. The properties of bio-oil are improved and its component distribution is similar to the 0^# diesel after catalytic hydrogenation.
- soybean oil /
- pyrolysis /
- molten salt /
- hydrogenation

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