Citation: MEI Yan-gang, WANG Zhi-qing, GAO Song-ping, ZHENG Hong-yan, ZHANG He, FANG Yi-tian. Research progress of the influence of alkali metals and alkaline earth metals on coal thermal chemical conversion[J]. Journal of Fuel Chemistry and Technology, ;2020, 48(4): 385-394. shu

Research progress of the influence of alkali metals and alkaline earth metals on coal thermal chemical conversion

1.
Taiyuan Institute of Technology, Taiyuan 030008, China
2.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China

Corresponding author: MEI Yan-gang, meiyangang90@163.com
Received Date: 10 January 2020
Revised Date: 10 March 2020

Fund Project: The project was supported by the Youth Program National Natural Science Foundation of China (2190080794) and Natural Science Foundation of Shanxi (201901D111321)Youth Program National Natural Science Foundation of China 2190080794Natural Science Foundation of Shanxi 201901D111321

Figures(11)

In order to comprehensively understand the catalytic gasification process, the influence of AAEMs during coal thermal chemical conversion was compared and explained. The main issues related to the catalytic gasification, such as the transformation of carbon structure, the conversion of alkali metals, and the deactivation of catalysts were discussed. AAEMs can be used as the catalysts for catalytic gasification, the pore making additives for activated carbon preparation, the activating agents in the process of aluminum extraction from coal ash by roasting, but also be regarded as hazard elements for high AAEMs coal utilization. The interaction between AAEMs and carbon can affect the surface structure of carbon to favor the adsorption and reaction of gasification agent on the carbon surface. As the same time, the volatilization and release of AAEMs can not be escaped, but the catalyst recovery can be effectively promoted by coupling the catalytic gasification and the coal ash resource utilization. By understanding the effect of AAEMs on coal thermal chemical conversion, we can propose novel ideas and innovation techniques for coal thermal chemical conversion with AAEMs addition.
- catalytic gasification,
- activated carbon preparation,
- AAEMs volatility,
- alumina extraction from coal ash
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