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Energies 2016, 9(7), 505; doi:10.3390/en9070505

High Pressure Oxydesulphurisation of Coal—Effect of Oxidizing Agent, Solvent, Shear and Agitator Configuration

1
Department of Chemical Engineering, COMSATS Institute of Information Technology, Defence Road, Off Raiwind Road, Lahore 54000, Pakistan
2
Centre for Coal Technology, University of the Punjab, Lahore 54000, Pakistan
3
Department of Sustainable & Renewable Energy Engineering, University of Sharjah, Sharjah 27272, UAE
4
Department of Mining Engineering, University of Engineering and Technology, Lahore 54000, Pakistan
5
Department of Chemical Engineering, NFC Institute of Engineering and Fertilizer Research, Faisalabad 38000, Pakistan
6
Department of Mechanical and Process Engineering, University of Sheffield, Sheffield S10 2TN, UK
*
Authors to whom correspondence should be addressed.
Academic Editor: Mehrdad Massoudi
Received: 17 May 2016 / Revised: 21 June 2016 / Accepted: 23 June 2016 / Published: 30 June 2016
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Abstract

The ambient temperature high pressure oxydesulphurisation technique was investigated to reduce the sulphur content. Prince of Wales coal was chosen for this study. The focus of the study was to investigate the reduction of both pyritic and organic sulphur while changing the KMnO4/Coal ratio, agitation speed, agitator configuration, and shear. The effect of different concentrations of acetone as a solvent and effect of particle size on the sulphur removal was also studied by a series of experimental runs at ambient temperature. Heating value recovery was found to be increased with the decreased KMnO4/Coal ratio and with decreased acetone concentration. It was found that sulphur removal was enhanced with the increase in shear using a turbine impeller. The effect of particle size was more significant on the pyritic sulphur removal as compared to the organic sulphur removal while heating value recovery was found to increase with decreased desulphurization tome for both, under atmospheric and high pressure. View Full-Text
Keywords: oxydesulphurisation; coal; pyritic sulphur; organic sulphur oxydesulphurisation; coal; pyritic sulphur; organic sulphur
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ghauri, M.; Shahzad, K.; Inayat, A.; Ali, Z.; Khan, W.A.; Akhtar, J.; Cliffe, K.R. High Pressure Oxydesulphurisation of Coal—Effect of Oxidizing Agent, Solvent, Shear and Agitator Configuration. Energies 2016, 9, 505.

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