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

Moinuddin Ghauri, Khurram Shahzad, Abrar Inayat, Zulfiqar Ali, Waqar Ali Khan, Javaid Akhtar and Keith R. Cliffe
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Moinuddin Ghauri: Department of Chemical Engineering, COMSATS Institute of Information Technology, Defence Road, Off Raiwind Road, Lahore 54000, Pakistan
Khurram Shahzad: Centre for Coal Technology, University of the Punjab, Lahore 54000, Pakistan
Abrar Inayat: Department of Sustainable & Renewable Energy Engineering, University of Sharjah, Sharjah 27272, UAE
Zulfiqar Ali: Department of Mining Engineering, University of Engineering and Technology, Lahore 54000, Pakistan
Waqar Ali Khan: Department of Chemical Engineering, NFC Institute of Engineering and Fertilizer Research, Faisalabad 38000, Pakistan
Javaid Akhtar: Centre for Coal Technology, University of the Punjab, Lahore 54000, Pakistan
Keith R. Cliffe: Department of Mechanical and Process Engineering, University of Sheffield, Sheffield S10 2TN, UK

Energies, 2016, vol. 9, issue 7, 1-15

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 KMnO 4 /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 KMnO 4 /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.

Keywords: oxydesulphurisation; coal; pyritic sulphur; organic sulphur (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2016
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