Citation: LIU Yang, YANG Xin-fang, LEI Fu-lin, XIAO Yun-han. Steam gasification characteristics of Zhundong coal with additive CaO at medium temperature[J]. Journal of Fuel Chemistry and Technology, ;2018, 46(3): 265-272. shu

Steam gasification characteristics of Zhundong coal with additive CaO at medium temperature

LIU Yang ^1,2,3 ,
YANG Xin-fang ^2,3,, ,
LEI Fu-lin ^1,2,3 ,
XIAO Yun-han ^1,2,3

1.
University of Chinese Academy of Sciences, Beijing 100049, China
2.
Key Laboratory of Advanced Energy and Power, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China
3.
Research Center for Clean Energy and Power, Chinese Academy of Sciences, Lianyungang 222069, China

Corresponding author: YANG Xin-fang, yangxinfang@iet.cn
Received Date: 12 October 2017
Revised Date: 29 January 2018

Fund Project: the National Key Research and Development Program of China 2016YFE0102500The project was supported by the National Key Research and Development Program of China (2016YFE0102500)

Figures(6)

The steam gasification characteristics of Zhundong coal with additive CaO at medium temperature of 700-750℃ were investigated by Thermal Gravimetric Analyzer (TGA). The Brunauer-Emmett-Teller (BET) specific surface area of the coal char was tested by N₂ adsorption, and the different occurrence modes of alkali metals in the coal were analyzed by Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES). The results show that the soluble sodium could catalyze the gasification reaction effectively and the water-washed coal has the highest activity. The additive CaO and the inherent sodium have a synergistic effect during the gasification, and the optimal Ca/C molar ratio is 1.0. The kinetic parameters were calculated using the homogeneous model (HM), the shrinking core model (SCM) and the modified volumetric model (MVM), respectively. The results indicate that the MVM is better to represent the char steam gasification reaction, and its activation energy calculated by the MVM is 160.90 kJ/mol.
- Zhundong coal,
- alkali metal,
- CaO,
- steam gasification,
- kinetics
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