Desulfurization of Mach Coal of Balochistan by Leaching Method

Journal of Applied and Emerging Sciences Pub Date : 2021-06-08 DOI:10.36785/jaes.111438

F. Mushtaq, A. Ullah, Asfandyar Khan, A. Waheed, S. Sultan, Ghulamullah Kakar, G. Khan, A. M. R. Abbasi

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Abstract

Coal desulfurization prior to usage is frequently subjected to preprocessing to achieve clean fuel and reduce environmental impacts. In this study, desulfurization of Mach coal of Balochistan was investigated with different leaching solvents. The solvents used are NaOH and HNO 3 . Effects of particle size and solvent weight% on sulfur removal were studied, whereas the leaching temperature and the agitation time were kept constant. Desulphurization experiments were carried out for 12 samples of different composition based on different particle size and solvent weight%. Significant reduction in Sulfur was attained when the coal particle size of 10 Mesh was used. The results indicated that Sulfur reduction was highest of 44.88% when HNO 3 was used as compare to NaOH which gave maximum Sulfur reduction of 24.72%. Sulfur recovery was found to increase with increasing solvent concentration. Decreased desulfurization was observed with larger coal particle size of 6 Mesh. Leaching process using variable solvent concentration was found effective and could be inexpensive for desulfurization of coal.

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俾路支省马赫煤浸出法脱硫研究

煤在使用前的脱硫通常要经过预处理，以达到清洁燃料和减少对环境的影响。研究了不同浸出溶剂对俾路支省马赫煤的脱硫作用。所用溶剂为NaOH和hno3。在浸出温度和搅拌时间一定的情况下，研究了不同粒度和溶剂质量%对硫去除的影响。根据不同的粒径和溶剂质量%，对12种不同组成的样品进行了脱硫实验。当煤粉粒径为10目时，硫含量显著降低。结果表明，与NaOH相比，hno3的硫还原率最高，为44.88%，NaOH的硫还原率最高，为24.72%。硫的回收率随溶剂浓度的增加而增加。6目煤粒度越大，脱硫效果越差。变溶剂浓度浸出法是一种经济有效的脱硫方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Journal of Applied and Emerging Sciences

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