Structure evolution characteristics of Inner Mongolia coal char during CO<sub>2</sub> gasification

LIN Shan-jun; LI Xian-yu; DING Lu; ZHOU Zhi-jie; YU Guang-suo

Volume 44 Issue 12

Dec. 2016

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LIN Shan-jun, LI Xian-yu, DING Lu, ZHOU Zhi-jie, YU Guang-suo. Structure evolution characteristics of Inner Mongolia coal char during CO2 gasification[J]. Journal of Fuel Chemistry and Technology, 2016, 44(12): 1409-1415.

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LIN Shan-jun, LI Xian-yu, DING Lu, ZHOU Zhi-jie, YU Guang-suo. Structure evolution characteristics of Inner Mongolia coal char during CO₂ gasification[J]. Journal of Fuel Chemistry and Technology, 2016, 44(12): 1409-1415.

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Structure evolution characteristics of Inner Mongolia coal char during CO₂ gasification

Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education, Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, China

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Corresponding author: Tel: 021-64252974, gsyu@ecust.edu.cn
Received Date: 2016-05-18
Rev Recd Date: 2016-08-10

Available Online: 2021-01-23

Publish Date: 2016-12-10

Abstract

Abstract

The rapid pyrolysis chars of an Inner Mongolia (Neimeng) lignite were prepared in a drop tube furnace, and the coal char gasification experiments with CO₂ were conducted using a high-frequency induction furnace. The characteristics of char structure evolution during gasification were studied. Results show that as the reaction proceeds, the graphitization degree of gasified chars increases, but it is far less than the degree of natural graphite. The specific surface area firstly increases and then decreases with char conversion, while the average pore size has an opposite trend overall. The particle size of gasified chars gradually increases with conversion in the early stage, and the particle size of gasified chars increases when the conversion exceeds 74%, which could be ascribed to the cohesion of some particles in the later stage of gasification.
- rapid pyrolysis,
- coal char,
- CO₂ gasification,
- structure evolution

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References(17)

References

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