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. shu

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

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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

Corresponding author: LI Wen-ying,
Received Date: 26 June 2015
Available Online: 27 August 2015
Fund Project: 国家自然科学基金(U1361202) (U1361202)国家高技术研究发展计划(863计划,2011AA05A202)资助项目 (863计划,2011AA05A202)

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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