Understanding the influence of microwave on the relative volatility used in the pyrolysis of Indonesia oil sands

doi:10.1016/j.cjche.2018.02.035

Chinese Journal of Chemical Engineering ›› 2018, Vol. 26 ›› Issue (7): 1485-1492.DOI: 10.1016/j.cjche.2018.02.035

• Separation Science and Engineering • 上一篇下一篇

Understanding the influence of microwave on the relative volatility used in the pyrolysis of Indonesia oil sands

Hong Li¹, Peng Shi¹, Xiaolei Fan², Xin Gao^1,2

1 School of Chemical Engineering and Technology, National Engineering Research Center of Distillation Technology, Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin University, Tianjin 300072, China;
2 School of Chemical Engineering and Analytical Science, The University of Manchester, Sackville Street, Manchester, M13 9PL, United Kingdom

收稿日期:2018-01-11 修回日期:2018-02-06 出版日期:2018-07-28 发布日期:2018-08-16
通讯作者: Xiaolei Fan,E-mail addresses:xiaolei.fan@manchester.ac.uk;Xin Gao,E-mail addresses:gaoxin@tju.edu.cn
基金资助:
Supported by the National Key Research and Development Program of China (2016YFB0301800), X. Fan thanks the partial support by The Royal Society International Exchange Award (IE161344). X. Gao thanks the State Scholarship Fund of China Scholarship Council (CSC) (201706255020).

Understanding the influence of microwave on the relative volatility used in the pyrolysis of Indonesia oil sands

Hong Li¹, Peng Shi¹, Xiaolei Fan², Xin Gao^1,2

1 School of Chemical Engineering and Technology, National Engineering Research Center of Distillation Technology, Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin University, Tianjin 300072, China;
2 School of Chemical Engineering and Analytical Science, The University of Manchester, Sackville Street, Manchester, M13 9PL, United Kingdom

Received:2018-01-11 Revised:2018-02-06 Online:2018-07-28 Published:2018-08-16
Contact: Xiaolei Fan,E-mail addresses:xiaolei.fan@manchester.ac.uk;Xin Gao,E-mail addresses:gaoxin@tju.edu.cn
Supported by:
Supported by the National Key Research and Development Program of China (2016YFB0301800), X. Fan thanks the partial support by The Royal Society International Exchange Award (IE161344). X. Gao thanks the State Scholarship Fund of China Scholarship Council (CSC) (201706255020).

摘要/Abstract

摘要： In this paper, pyrolysis of Indonesian oil sands (IOS) was investigated by two different heating methods to develop a better understanding of the microwave-assisted pyrolysis. Thermogravimetric analysis was conducted to study the thermal decomposition behaviors of IOS, showing that 550℃ might be the pyrolysis final temperature. A explanation of the heat-mass transfer process was presented to demonstrate the influence of microwave-assisted pyrolysis on the liquid product distribution. The heat-mass transfer model was also useful to explain the increase of liquid product yield and heavy component content at the same heating rate by two different heating methods. Experiments were carried out using a fixed bed reactor with and without the microwave irradiation. The results showed that liquid product yield was increased during microwave induced pyrolysis, while the formation of gas and solid residue was reduced in comparison with the conventional pyrolysis. Moreover, the liquid product characterization by elemental analysis and GC-MS indicated the significant effect on the liquid chemical composition by microwave irradiation. High polarity substances (ε < 10 at 25℃), such as oxyorganics were increased, while relatively low polarity substances (ε > 2 at 25℃), such as aliphatic hydrocarbons were decreased, suggesting that microwave enhanced the relative volatility of high polarity substances. The yield improvement and compositional variations in the liquid product promoted by the microwave-assisted pyrolysis deserve the further exploitation in the future.

关键词: Oil sands, Microwave irradiation, Pyrolysis, Fuel, Relative volatility

Abstract: In this paper, pyrolysis of Indonesian oil sands (IOS) was investigated by two different heating methods to develop a better understanding of the microwave-assisted pyrolysis. Thermogravimetric analysis was conducted to study the thermal decomposition behaviors of IOS, showing that 550℃ might be the pyrolysis final temperature. A explanation of the heat-mass transfer process was presented to demonstrate the influence of microwave-assisted pyrolysis on the liquid product distribution. The heat-mass transfer model was also useful to explain the increase of liquid product yield and heavy component content at the same heating rate by two different heating methods. Experiments were carried out using a fixed bed reactor with and without the microwave irradiation. The results showed that liquid product yield was increased during microwave induced pyrolysis, while the formation of gas and solid residue was reduced in comparison with the conventional pyrolysis. Moreover, the liquid product characterization by elemental analysis and GC-MS indicated the significant effect on the liquid chemical composition by microwave irradiation. High polarity substances (ε < 10 at 25℃), such as oxyorganics were increased, while relatively low polarity substances (ε > 2 at 25℃), such as aliphatic hydrocarbons were decreased, suggesting that microwave enhanced the relative volatility of high polarity substances. The yield improvement and compositional variations in the liquid product promoted by the microwave-assisted pyrolysis deserve the further exploitation in the future.

Key words: Oil sands, Microwave irradiation, Pyrolysis, Fuel, Relative volatility

Hong Li, Peng Shi, Xiaolei Fan, Xin Gao. Understanding the influence of microwave on the relative volatility used in the pyrolysis of Indonesia oil sands[J]. Chinese Journal of Chemical Engineering, 2018, 26(7): 1485-1492.

Hong Li, Peng Shi, Xiaolei Fan, Xin Gao. Understanding the influence of microwave on the relative volatility used in the pyrolysis of Indonesia oil sands[J]. Chin.J.Chem.Eng., 2018, 26(7): 1485-1492.

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