Citation: ZOU Tao, ZHU Chun-peng, ZHANG Yu, LIN Yi-an, LIU Jun, DU Yan-xue. Characteristics of microstructures and gasification reactivity of co-pyrolysis coal char with oily sludge and blended coal[J]. Journal of Fuel Chemistry and Technology, ;2020, 48(2): 137-143. shu

Characteristics of microstructures and gasification reactivity of co-pyrolysis coal char with oily sludge and blended coal

ZOU Tao ^1,2,, ,
ZHU Chun-peng ^1,2 ,
ZHANG Yu ^1,2 ,
LIN Yi-an ^1,2 ,
LIU Jun ^1,2 ,
DU Yan-xue ^1,2

1.
Northwest Research Institule of Chemical Industry Co., Ltd., Xi′an 710061, China
2.
Shaanxi Coal Chemical Engineering Technology Research Center, Xi′an 710061, China

Corresponding author: ZOU Tao, zoutao@aliyun.com
Received Date: 30 September 2019
Revised Date: 23 December 2019

Fund Project: National Key Research and Development Project of China 2018YFB0604604The project was supported by Shaanxi Provincial Key Research and Development Program of China (2019GY-143) and National Key Research and Development Project of China (2018YFB0604604)The project was supported by Shaanxi Provincial Key Research and Development Program of China 2019GY-143

Figures(6)

Char samples were prepared by pyrolysis of oily sludge and blended coal at 850-1150 ℃. The pore structure and crystallite structure of chars were analyzed by N₂ adsorption-desorption and X-ray diffraction (XRD). Effects of pyrolysis temperature and amount of oily sludge on gasification reactivity of the char was investigated by thermogravimetric analysis (TGA). The results show that increasing pyrolysis temperature and adding oily sludge can promote the formation of more abundant pore structure of chars, strengthen chars-CO₂ gasification reaction and inhibit graphitization process of chars, thus improving gasification reactivity of the chars. However, too high pyrolysis temperature or too much sludge will also result in dense structure or pore plugging of coal char, and reduce gasification reactivity of the char.
- oily sludge,
- co-pyrolysis,
- char,
- microstructures,
- gasification reactivity
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