Citation: LIN Shan-jun, ZHOU Zhi-jie, HUO Wei, DING Lu, YU Guang-suo. Effect of internal diffusion on steam gasification reactivity of coal and petroleum coke[J]. Journal of Fuel Chemistry and Technology, ;2014, 42(8): 905-912. shu

Effect of internal diffusion on steam gasification reactivity of coal and petroleum coke

1.
Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, East China University of Science & Technology, Shanghai 200237, China

Corresponding author: ZHOU Zhi-jie,
Received Date: 15 January 2014
Available Online: 28 March 2014
Fund Project: 国家自然科学基金(21376081) (21376081)国家高技术研究发展计划(863计划,2011AA050106)。 (863计划,2011AA050106)

The steam gasification experiments with Neimeng lignite, Shenfu bituminous coal, Zunyi anthracite and a petroleum coke were conducted in a thermogravimetric analyzer (TGA) to study the intrinsic kinetics and the macrokinetics with the effects of particle size. By virtue of gas-solid catalysis theory, a method to calculate the internal effective factor was proposed based on the kinetic parameters derived from the nth-order equation. The comparison between calculated and experimental effective factors shows that the method is better to calculate the internal effective factor for quantificationally estimating the effect of internal diffusion on steam gasifiation.
- gasification reactivity,
- steam,
- internal diffusion,
- Thiele modulus,
- effective factor
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