THE USE OF 1-METHYL NAPHTHALENE AS COAL ASH REMOVAL SOLVENT
DOI:
https://doi.org/10.30556/imj.Vol19.No2.2016.417Keywords:
solvent, ash, extraction yield, moisture, calorific valueAbstract
Solvent extraction method is one of the methods to reduce ash content in coal to improve the energy efficiency and reduce negative environmental impacts. The use of 1-methyl naphthalene (1-MN) as a solvent in the weight ratio of coal to solvent of 1: 3, 1: 6 and 1: 9 using three coal samples obtained from a coal washing plant, namely ROM (run of mine), DC (dirty coal) and RC (reject coal) was performed. Results show that the ash content of the extracted coals no or significantly low amount (<0.3%) ash contents. The highest extraction yield was obtained at 15.38 % (daf) at DC coal sample and coal to solvent ratio of 1:9, while the lowest at 3.09 % (daf) at ROM coal sample and coal to solvent ratio of 1:3. In addition, the extraction process with a solution of 1-MN also able to reduce moisture content of the coals, as a result the calorific value of the coals were significantly increased.
References
Anonymous, 2014. Rancangan Awal Rencana Pembangunan Jangka Menengah Nasional 2015-2019, Buku I Agenda Pembangunan Nasional, Kementerian Perencanaan Pembangunan Nasional/ Badan Perencanaan Pembangunan Nasional, Republik Indonesia.
Fujitsuka, H., Ashida, R. and Miura, K., 2013, Upgrading and dewatering of low rank coals through solvent treatment at around 350°C and low temperature oxygen reactivity of the treated coals, Fuel, vol. 114, p.16-20.
Ghasemi, J., Karamoozian, M. and Sereshki, F., 2014. Investigation of different coal types effect on the overall plant recovery, International Journal of Mining Science and Technology, vol. 24 (4), p. 447-450.
Hardacre C, Holbrey JD, Mullan CL, Nieuwenhuyzen M, Youngs TG, Bowron DT. and Teat SJ, 2010. Solid and liquid charge-transfer complex formation between 1-methylnaphthalene and 1- alkyl-cyanopyridinium bis{(trifluoromethyl)sulfonyl}imide ionic liquids, Biodegradation. 21 (2), p. 267-81. DOI: 10.1007/s10532-009-9299-2.
Komatsu, N., Okuyama, N. and Hamaguchi, M., 2009. Application of ash free coal for reduction of nonferrous metal, Sekitan Kagaku Kaigi Happyo Ronbunshu, 46, p. 18-19.
Lee, Sihyun, 2012. Current R&D Status of Low Rank Coal Utilization in Korea. APEC Symposium on Energy Efficiency of Low Rank Coal.
Li, X., Zhu, X.Q., Xiao, L.a, Ryuichi, A., Kouichi, M., Luo, G.-Q. and Yao, H., 2014. Degradative solvent extraction of demineralized and ion-exchanged low- rank coals, Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology, vol. 42 (8), p. 897-904.
Okuyama, N., Komatsu, N., Shigehisa, T., Kaneko, T. and Tsuruya, S., 2004, Hyper-coal process to produce the ash- free coal, Fuel Processing Technology, vol. 85 ( 6-10), p. 947-967.
Okuyama, N. , Sakai, K., Kinoshita, S., Yoshida, T., Hamaguchi, M. and Kikuchi, N., 2014. Influence of the rapid heating process on coal extraction yield and properties, Conference Paper 31st Annual International Pittsburgh Coal Conference: Coal - Energy, Environment and Sustainable Development, Pittsburgh; United States; Code 110055.
Pandey, V.C., Singh, J.S., Singh R.P., Singh, N. and Yunus, M., 2011. Arsenic hazards in coal fly ash and its fate in Indian scenario, Resources, Conservation and Recycling, vol. 55, p. 819-835.
Rahman, M., Samanta, A., Klerk, A.D. and Gupta, R., 2011. Ash-free coal (AFC) from low-grade Canadian coal by solvent extraction, Preprints of Papers, American Chemical Society, Division of Fuel, vol. 56 (2), p. 308-309.
Rahman, M., Samanta, A., Gupta, R., 2013. Production and characterization of ash- free coal from low-rank Canadian coal by solvent extraction, Fuel Processing Technolog ,vol. 115, p. 88-98.
Shui, H., Zhou, Y., Li, H., Wang, Z., Lei, Z., Ren, S., Pan, C. and Wang, W., 2013. Thermal dissolution of Shenfu coal in different solvents, Fuel, vol.108, p. 385-390.
Siefert, NS. and Litster S., 2013. Exergy and Economy Analyses of Advanced IGCC- CCS and IGFC-CCS Power Plants, Applied Energy 107, p. 315-328.
Sonmez, O. and Giray ES., 2011. Producing ashless coal extracts by microwave irradiation, Fuel, vol. 90, p. 2125-2131.
Takanohashi, T., Shishido, T., Kawashima H. and Saito, I., 2008. Characterisation of Hypercoals from Coals of Various Ranks, Fuel, vol. 87 (4-5), p. 592-598.
Umar, DF., Hudaya, GK., Sulistyohadi, F., Rahayu, A. dan Susanti, I., 2014, Penurunan Kadar Abu Batubara, Laporan Intern Puslitbang Teknologi Mineral Dan Batubara.
Umar DF., Soelistyohadi, F., and Hudaya, G.K., 2015. Coal De-Ashing by Solvent Extraction, Indonesian Mining Journal, vol. 18 (1).
Wijaya, N. and Zhang, L., 2011. A critical review of coal demineralization and its implication on understanding the speciation of organically bound metals and sub-micrometer mineral grains in coal, Energy & Fuels, vol. 25, p. 1-16.
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