Catalytic hydroprocessing of the fast pyrolysis bio-oil of Chlorella

ZHONG Wei-cheng; GUO Qing-jie; WANG Xu-yun; ZHANG Liang

Volume 41 Issue 05

May 2013

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ZHONG Wei-cheng, GUO Qing-jie, WANG Xu-yun, ZHANG Liang. Catalytic hydroprocessing of the fast pyrolysis bio-oil of Chlorella[J]. Journal of Fuel Chemistry and Technology, 2013, 41(05): 571-578.

Citation:

ZHONG Wei-cheng, GUO Qing-jie, WANG Xu-yun, ZHANG Liang. Catalytic hydroprocessing of the fast pyrolysis bio-oil of Chlorella[J]. Journal of Fuel Chemistry and Technology, 2013, 41(05): 571-578.

ZHONG Wei-cheng, GUO Qing-jie, WANG Xu-yun, ZHANG Liang. Catalytic hydroprocessing of the fast pyrolysis bio-oil of Chlorella[J]. Journal of Fuel Chemistry and Technology, 2013, 41(05): 571-578.

Citation:

ZHONG Wei-cheng, GUO Qing-jie, WANG Xu-yun, ZHANG Liang. Catalytic hydroprocessing of the fast pyrolysis bio-oil of Chlorella[J]. Journal of Fuel Chemistry and Technology, 2013, 41(05): 571-578.

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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

Received Date: 2012-12-31
Rev Recd Date: 2013-02-21
Publish Date: 2013-05-30

Abstract

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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References(15)

References

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