Citation: LIU Peng-fei, ZHANG Yong-qi, FANG Yi-tian. Gasification kinetics of extraction residue char from Shenhua direct liquefaction residue[J]. Journal of Fuel Chemistry and Technology, ;2012, 40(11): 1281-1288. shu

Gasification kinetics of extraction residue char from Shenhua direct liquefaction residue

1.
1. Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;

Corresponding author: ZHANG Yong-qi,
Received Date: 20 April 2012
Available Online: 12 June 2012

Thermo-gravimetric analysis was employed to study gasification kinetics of three coal direct liquefaction extract residue chars under steam and CO₂ atmosphere. Gasification kinetics of liquefaction residue char was compared at the same conditions. It is shown that temperature plays a significant role on residue char gasification. The decreasing degree of order for carbon and increasing pore structure in residue chars due to supercritical solvent extraction improve gasification reactivity of residue chars. Due to the lack of pore structure, the experimental results of residue chars during steam gasification and CO₂ gasification can be well described by the chemical reaction control shrinking core model.
- liquefaction residue,
- extract residue,
- steam gasification,
- CO₂ gasification,
- dynamic kinetics
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