小球藻热裂解油催化加氢精制研究

仲卫成; 郭庆杰; 王许云; 张亮

小球藻热裂解油催化加氢精制研究

青岛科技大学化工学院, 清洁化工过程山东省高校重点实验室, 山东青岛 266042

基金项目: 海洋可再生能源专项资金(GHME2001SW02); 山东省科技攻关项目(2008GG10006010, 2009GG10007001)。

详细信息

通讯作者:
郭庆杰, Tel: 0532-84022757, Fax: 0532-84022757, E-mail: qj_guo@yahoo.com。

中图分类号: TK6
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出版历程
- 收稿日期: 2012-12-31
- 修回日期: 2013-02-21
- 刊出日期: 2013-05-30

Catalytic hydroprocessing of the fast pyrolysis bio-oil of Chlorella

Key Laboratory of Clean Chemical Processing of Shandong Province, College of Chemical Engineering, Qingdao University of Science & Technology, Qingdao 266042, China

摘要

摘要: 以Ni-Co-Pd/γ-Al₂O₃为催化剂,在固定床反应器中研究了小球藻热裂解油的催化加氢精制。在较低加氢压力(2×10⁶ Pa)下考察了加氢温度和氢油比(体积比)对精制生物油的含水率、热值、运动黏度和十六烷值等参数的影响,并对加氢前后油品进行了元素分析和GC-MS分析。结果表明,在2×10⁶ Pa压力下,氢油比为120:1,温度为300 ℃时,精制油收率达89.6%,热值和十六烷值较加氢前分别增加了17.94%和71.2%,黏度下降66.32%。元素分析和GC-MS分析表明,精制生物油的H/C原子比由1.55提高至1.97,氧、氮、硫含量明显降低,脱氧率达到80.46%。精制油中的有机酸、酯、酮、醛的含量明显降低,烷烃和醇醚含量明显增加。
- 小球藻热裂解油 /
- 催化加氢 /
- Ni-Co-Pd/&gamma /
- -Al₂O₃催化剂 /
- 反应机理
Abstract: Catalytic hydroprocessing of the bio-oil obtained through fast pyrolysis of Chlorella was carried out in a bench-scale continuous-flow fixed-bed reactor equipped with a Ni-Co-Pd/γ-Al₂O₃ catalyst. The effects of the hydrogenation temperature and the H/oil molar ratio on the moisture content, calorific value, viscosity and cetane number of the refined bio-oils were investigated at the pressure of 2×10⁶ Pa, It was shown that the yield of the refined oil reached 86.1%, and the calorific value and cetane number were increased by 17.94% and 71.2% respectively, while the viscosity was decreased by 66.32% at the temperature of 300 ℃, the pressure of 2×10⁶ Pa and the H/oil mol ratio of 120. The elemental analysis and GC-MS analysis results of the bio-oil before and after hydrogenation show that the H/C mol ratio was increased from 1.55 to 1.97, while the oxygen, nitrogen and sulfur contents were significantly decreased. The deoxidation degree reached 80.46%. The amounts of organic acids, esters, ketones and aldehyde in the refined oils were obviously decreased, while those of alcohols and alkanes were markedly increased.
- chlorella pyrolysis oil /
- catalytic hydroprocessing /
- Ni-Co-Pd/&gamma /
- -Al₂O₃ catalyst /
- reaction mechanism

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