Citation: CHANG Qing-hua, LI Hong-jun, CUI Tong-min, FAN Wen-ke, YU Guang-suo, WANG Fu-chen. Effect of moisture content on gas release and pore structure development of wetted Shenfu coal during rapid pyrolysis[J]. Journal of Fuel Chemistry and Technology, ;2017, 45(4): 427-435. shu

Effect of moisture content on gas release and pore structure development of wetted Shenfu coal during rapid pyrolysis

CHANG Qing-hua ^1,2 ,
LI Hong-jun ^1,2 ,
CUI Tong-min ^1,2 ,
FAN Wen-ke ^1,2 ,
YU Guang-suo ^1,2 ,
WANG Fu-chen ^1,2,*,,

1.
Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science & Technology, Shanghai 200237, China
2.
Collaborative Innovation Center of Chemical Technology for Coal Based Energy, Shanghai 200237, China

Corresponding author: WANG Fu-chen, wfch@ecust.edu.cn
Received Date: 28 December 2016
Revised Date: 27 February 2017

Figures(12)

The rapid pyrolysis experiments of Shenfu coal with various moisture content prepared by adding water were conducted in a high-frequency furnace to study the influence of moisture content on the thermal behavior. The gas composition and the structure properties of char were analyzed. The result shows that the gas yield and the maximal release rate decrease when the moisture content of coal increases. After pyrolysis, both BET surface and pore volume increase with increasing moisture. Compared to the char from dry coal pyrolysis, the char from pyrolysis of coal with high moisture content has more developed pore structure with more micropores. Furthermore, the moisture can inhabit the occurrence of pore obstruction and collapse during rapid pyrolysis, and also contribute to the enhancement of the surface roughness and the pore structure complexity.
- wet coal,
- rapid pyrolysis,
- gas release,
- pore structure
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