CO2 gasification and pyrolysis reactivity evaluation of oil shale. (February 2019)

• Record Type: Journal Article
• Authors: Tang, Luyao; Yan, Yuxin; Meng, Yang; Wang, Jiayu; Jiang, Peng; Pang, Cheng Heng; Wu, Tao
• Is Part Of: Energy procedia. Volume 158(2019)
• Page Start: 1694
• Page End: 1699
• Publication Date: 2019-02
• Subjects: oil shale -- CO2 gasification -- pyrolysis; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2019.01.394
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: This research focuses on the non-isothermal CO2 gasification and pyrolysis reactivity via thermogravimetric analysis. It was found that CO2 decreased activation energy of all four types of oil shale (Fushun, Jinzhou, Wulin, Xingsheng). Activation energy of XS oil shale was highly reduced from 59.86 kJ/mol to 9.48 kJ/mol. Reactivity index results showed that WL and XS oil shales were observed to be more dependent on CO2 atmosphere. Alkali metal oxide also contributed to thermal decomposition according to thermogravimetric (TG) and differential thermal analysis (DTG) curves during CO2 gasification process. Overall, CO2 atmosphere can be used to improve oil shale decomposition, especially for alkali- rich shales, while providing an efficient and effective means to convert greenhouse gases into useful fuels.