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Energies 2016, 9(4), 289;

High Pressure Oxydesulphurisation of Coal Using KMnO4—Effect of Coal Slurry Concentration, pH and Alkali

Department of Chemical Engineering, COMSATS Institute of Information Technology, Defence Road, Off Raiwind Road, Lahore 54000, Pakistan
Centre for Coal Technology, University of the Punjab, Lahore 54000, Pakistan
Department of Sustainable & Renewable Energy Engineering, University of Sharjah, Sharjah 27272, UAE
Department of Mining Engineering, University of Engineering and Technology, Lahore 54000, Pakistan
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: 20 November 2015 / Revised: 10 February 2016 / Accepted: 25 February 2016 / Published: 16 April 2016
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A high pressure oxydesulphurisation technique was investigated to reduce sulphur content, especially at ambient temperature. Prince of Wales coal was chosen for this study. The focus of the study was on the reduction of both pyritic and organic sulphur. The effects of pressure, coal slurry concentration, pH and KOH concentration in a fixed time interval on sulphur removal were studied with a series of experimental runs at ambient temperature. Heating value recovery was found to be increased with decreased pressure and with increased coal slurry concentration. It was found that sulphur removal was enhanced with an increase in pressure, with a more significant effect on the organic sulphur. With increase in the coal slurry concentration reduction, sulphur was found to be decreased. View Full-Text
Keywords: oxydesulphurisation; coal; pyritic sulphur; organic sulphur; KMnO4 oxydesulphurisation; coal; pyritic sulphur; organic sulphur; KMnO4

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Ghauri, M.; Shahzad, K.; Inayat, A.; Ali, Z.; Cliffe, K.R. High Pressure Oxydesulphurisation of Coal Using KMnO4—Effect of Coal Slurry Concentration, pH and Alkali. Energies 2016, 9, 289.

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