Properties of semi-coke from co-pyrolysis of lignite and direct liquefaction residue of Shendong coal

LI Xiao-hong; MA Jiang-shan; XUE Yan-li; LI Wen-ying

Volume 43 Issue 11

Nov. 2015

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Article Navigation > Journal of Fuel Chemistry and Technology > 2015 > 43(11): 1281-1286

LI Xiao-hong, MA Jiang-shan, XUE Yan-li, LI Wen-ying. Properties of semi-coke from co-pyrolysis of lignite and direct liquefaction residue of Shendong coal[J]. Journal of Fuel Chemistry and Technology, 2015, 43(11): 1281-1286.

Citation:

LI Xiao-hong, MA Jiang-shan, XUE Yan-li, LI Wen-ying. Properties of semi-coke from co-pyrolysis of lignite and direct liquefaction residue of Shendong coal[J]. Journal of Fuel Chemistry and Technology, 2015, 43(11): 1281-1286.

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Properties of semi-coke from co-pyrolysis of lignite and direct liquefaction residue of Shendong coal

Training Base of State Key Laboratory of Coal Science and Technology Jointly Constructed by Shanxi Province and Ministry of Science and Technology, Taiyuan University of Technology, Taiyuan 030024, China

Funds: The project was supported by the National Natural Science Foundation of China (U1361202) and the National High Technology Research and Development Program of China (863 Program, 2011AA05A202).

Received Date: 2015-06-26
Rev Recd Date: 2015-08-27
Publish Date: 2015-11-30

Abstract

Abstract

In order to make use of coal direct liquefaction residue efficiently, co-pyrolysis of Hulunbuir lignite and direct liquefaction residue (DLR) of Shendong coal were conducted in a fixed bed reactor under atmospheric pressure. The physicochemical properties of co-pyrolysis semi-coke were analyzed by scanning electron microscope, nitrogen adsorption-desorption, X-ray diffraction, Raman spectroscopy and thermogravimetric analyzer. The results show that DLR semi-coke and lignite semi-coke are cohered each other, because the DLR is softened and melted during co-pyrolysis. The specific surface area and pore volume of co-pyrolysis semi-coke decrease. Characterization of both XRD and Raman spectroscopy indicate that the order degree of co-pyrolysis semi-coke increases with the addition of DLR. Compared with the lignite semi-coke, the CO₂ gasification reactivity of co-pyrolysis semi-coke decreases.
- lignite,
- coal direct liquefaction residue,
- co-pyrolysis,
- semi-coke,
- CO₂gasification reactivity

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References(16)

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