Continuous production of biodiesel from cottonseed oil and methanol using a column reactor packed with calcined sodium silicate base catalyst

doi:10.1016/j.cjche.2015.11.006

Chinese Journal of Chemical Engineering ›› 2016, Vol. 24 ›› Issue (4): 499-505.DOI: 10.1016/j.cjche.2015.11.006

• 第25届中国过程控制会议专栏 • 上一篇下一篇

Continuous production of biodiesel from cottonseed oil and methanol using a column reactor packed with calcined sodium silicate base catalyst

Xia Gui, Sichen Chen, Zhi Yun

College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 210009, China

收稿日期:2015-06-01 修回日期:2015-10-31 出版日期:2016-04-28 发布日期:2016-05-27
通讯作者: Zhi Yun
基金资助:
Supported by the National Natural Science Foundation of China (21306088), National Key Technologies R & D Program of China (2015BAD15B07), State Key Laboratory of Chemical Engineering (SKL-ChE-13A01, Tsinghua University, China) and Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD, China).

Continuous production of biodiesel from cottonseed oil and methanol using a column reactor packed with calcined sodium silicate base catalyst

Xia Gui, Sichen Chen, Zhi Yun

College of Chemistry and Chemical Engineering, Nanjing Tech University, Nanjing 210009, China

Received:2015-06-01 Revised:2015-10-31 Online:2016-04-28 Published:2016-05-27
Contact: Zhi Yun
Supported by:
Supported by the National Natural Science Foundation of China (21306088), National Key Technologies R & D Program of China (2015BAD15B07), State Key Laboratory of Chemical Engineering (SKL-ChE-13A01, Tsinghua University, China) and Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD, China).

摘要/Abstract

摘要： Sodium silicate and that calcined at 400℃ for 2 h were used to catalyze the transesterification of cottonseed oil with methanol. Calcined sodium silicate (CSS) catalyst exhibited much higher catalytic activity and stability. A maximum biodiesel yield of 98.9% was achieved at methanol/oil mole ratio of 12:1, reaction temperature 65℃, reaction time 3.0 h, and CSS/oil mass ratio of 2 wt%. After 7 consecutive reactions without any treatment, biodiesel yield reduced to 82.5%. Considering technological and economic feasibility, CSS base catalyst supported on θ rings was prepared for continuous transesterification. The maximum yield was 99.1% under optimum conditions (reaction temperature 55℃,methanol velocity 1 ml·min^-1, oil velocity 3ml·min^-1, and 5 tower sections). These results indicate that this newcontinuous biodiesel production process and apparatus present a great potential for industrial application in biodiesel.

关键词: Transesterification, Cottonseed oil, Calcined sodium silicate, Biodiesel, Sodium silicate, Continuous production

Abstract: Sodium silicate and that calcined at 400℃ for 2 h were used to catalyze the transesterification of cottonseed oil with methanol. Calcined sodium silicate (CSS) catalyst exhibited much higher catalytic activity and stability. A maximum biodiesel yield of 98.9% was achieved at methanol/oil mole ratio of 12:1, reaction temperature 65℃, reaction time 3.0 h, and CSS/oil mass ratio of 2 wt%. After 7 consecutive reactions without any treatment, biodiesel yield reduced to 82.5%. Considering technological and economic feasibility, CSS base catalyst supported on θ rings was prepared for continuous transesterification. The maximum yield was 99.1% under optimum conditions (reaction temperature 55℃,methanol velocity 1 ml·min^-1, oil velocity 3ml·min^-1, and 5 tower sections). These results indicate that this newcontinuous biodiesel production process and apparatus present a great potential for industrial application in biodiesel.

Key words: Transesterification, Cottonseed oil, Calcined sodium silicate, Biodiesel, Sodium silicate, Continuous production

Xia Gui, Sichen Chen, Zhi Yun. Continuous production of biodiesel from cottonseed oil and methanol using a column reactor packed with calcined sodium silicate base catalyst[J]. Chinese Journal of Chemical Engineering, 2016, 24(4): 499-505.

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Continuous production of biodiesel from cottonseed oil and methanol using a column reactor packed with calcined sodium silicate base catalyst

Continuous production of biodiesel from cottonseed oil and methanol using a column reactor packed with calcined sodium silicate base catalyst

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