Study on the Effect of Small Molecule Compounds on the Structure and Properties of Coal

Document Type : Research Note

Authors

School of Chemical and Biological Engineering, Taiyuan University of Science and Technology, Taiyuan, R.R. CHINA

Abstract

In this research, small molecular compounds are extracted from Shenfu coal using solvent extraction method, then through analysis and comparison, the structure and properties of coal before and after extraction of coal in order to study small molecular compounds affect the structure and properties of coal. The results show that they have been affected to varying degrees and the core of the coal structural unit aromatic ring has not been reduced, the macromolecular structure of coal has not changed after the extraction of coal. And these studies surely help to study the reaction mechanism of coal liquefaction and guide the study of coal macromolecular.

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References

[1] Wang Y.C., Xue Y.B., Wang X.X., Study on the Structure of Small Molecule Compounds and Their Functional Groups in Coal, Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 39: 1733-1738 (2017).
[2] Ishaq M., Saeed K., Ahmad I., Sultan S., Akhtar S., Coal Ash as a Low Cost Adsorbent for the Removal of Xylenol Orange from Aqueous Solution, Iranian Journal of Chemistry and Chemical Engineering (IJCCE), 33(1): 53-58 (2014).
[3] Nisar J., Ullah N., Awan I.A., Khan K., Ahamd I., Characterization of the Products Obtained in Coal Pyrolysis: A Case study of Some Pakistani Coals, Iranian Journal of Chemistry and Chemical Engineering (IJCCE), 30(3): 53-56 (2011).
[4] Wadhwani R., Mohanty B., Computational Fluid Dynamics Study of a Complete Coal Direct Chemical Looping Sub-Pilot Unit, Iranian Journal of Chemistry and Chemical Engineering (IJCCE), 35(3): 139-153 (2016).
[5] Zhu Z.P., Gao J.S., “Coal Chemistry”, Shanghai Science and Technology Press. 194-198 (1984).
[6] Li Y.L., Huang S., Wu Y.Q., Wu S.Y., Gao J.S., The Roles of the Low Molecular Weight Compounds in the Low-Temperature Pyrolysis of Low-Rank Coal, Journal of the Energy Institute, 92(2): 203-209 (2019).
[7] He Y.Y., Zhao R.F., Yan L.J., Bai Y.H., Li F., The Effect of Low Molecular Weight Compounds in Coal on the Formation of Light Aromatics During Coal Pyrolysis, Journal of Analytical and Applied Pyrolysis, 123: 49-55 (2017).
[8] Jin H.H., Xu B.N., Li H.Q., Ku X.K., Fan J.R., Numerical Investigation of Coal Gasification in Supercritical Water with the Reaxff Molecular Dynamics Method, International Journal of Hydrogen Energy, 43(45): 20513-20524 (2018).
[9] Zhu P., Luo A.Q., Zhang F., Lei Z.P., Zhang J.Z., Zhang, J.S., Effects of Extractable Compounds on the Structure and Pyrolysis Behaviours of Two Xinjiang Coal, Journal of Analytical and Applied Pyrolysis, 133: 128-135 (2018).
[10] Zhou B., Liu Q.Y., Shi L., Liu Z.Y., Electron Spin Resonance Studies of Coals and Coal Conversion Processes: A Review, Fuel Processing Technology, 188(1): 212-227 (2019).
[11] Kawashima H., Changes in Sulfur Functionality During Solvent Extraction of Coal in Hyper Coal Production, Fuel Processing Technology, 188(1): 105-109 (2019).
[12] Li E., Pan C.C., Yu S., Jin X.D., Liu J.Z., Hydrocarbon Generation from Coal, Extracted Coal and Bitumen Rich Coal in Confined Pyrolysis Experiments, Organic Geochemistry, 64: 58-75 (2013).
[13] Zhang Z.F., “The Effect of Solvent Extraction on the Property and Quick Liquefaction Performance of Yanzhou Coal at High Temperature”, Ph.D. Diss., Taiyuan University of Technology (2012).
[14] Jia W., “Study on the Effect Small Molecular Compound in Coal on Quick Coal Liquefaction at High Temperature”, Ph.D. Diss., Taiyuan University of Technology (2010).
[15] Huang X.Y., Cheng D.G., Chen F.Q., Zhan X.L., A Density Functional Theory Study on the Decomposition of Aliphatic Hydrocarbons and Cycloalkanes During Coal Pyrolysis in Hydrogen Plasma, Journal of Energy Chemistry. 24(1): 65-71 (2015).
[16] Mohammad I., Khalid S., Imtiaz A., Sirraj S., Sohail A., Coal Ash as a Low Cost Adsorbent for the Removal of Xylenol Orange from Aqueous Solution. Iranian Journal of Chemistry and Chemical Engineering. 33(1): 53-58 (2014).
[17] Li Q.Z., Lin B.Q., Zhao C.S., Wu W.F., Chemical Structure Analysis of Coal Char Surface Based on Fourier-Transform Infrared Spectrometer. Proceedings of the CSEE. 31: 46-52 (2011).
Iranian Journal of Chemistry and Chemical Engineering
Volume 39, Issue 6 - Serial Number 104
November and December 2020
Pages 245-249

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