Effect of Demineralization Process on the CO₂ Gasification of Lignite

Yıl 2017, Cilt: 21 Sayı: 1, 201 - 207, 15.04.2017

Pınar Acar Bozkurt Sibel Koç Muammer Canel Zarife Mısırlıoğlu

https://doi.org/10.19113/sdufbed.27507

Cited By: 4

Öz

The effect of different demineralization process on CO₂ gasification of cokes obtained from Karaman / Ermenek lignite at different temperatures was investigated in this study. 10% and 20% hydrochloric acid (HCl), nitric acid (HNO₃) and sulfuric acid (H₂SO₄) solutions were used in the demineralization process. The demineralized lignite samples were subjected to coking process at the temperatures ranging between 500°C-800°C, and the reaction capabilities of the obtained cokes in the gasification reaction with CO₂ at the temperatures ranging between 900°C–975°C were determined. The reaction capabilities of the demineralized lignite samples during CO₂ gasification were observed to be lower than those of the samples untreated with acid. In addition, it was observed that the reaction capabilities of cokes increased with increasing of coking temperature.

Anahtar Kelimeler

Lignite, Demineralization; Gasification

Kaynakça

• [1] International energy agency. Key World Energy Statistics IEA. http://www.iea.org/stats/index.asp (Erişim Tarihi: 14.06.2010).
• [2] BP Statistical review of world energy. http://www.bp.com (Erişim Tarihi: 18.09.2010).
• [3] Turkey Coal Management Organization. Coal Sector Report (Lignite). 2014.
• [4] Ersin M. (2006). The Importance of Lignites in Turkıye as an Energy Source. Master Thesis. T.C. İstanbul University. Social Sciences Institute. İstanbul. 78-98.
• [5] Karaca, S. 2003. Desulfurization of a Turkish lignite at various gas atmospheres by pyrolysis. Effect of mineral matter. Fuel, 82(2003), 1509–1516.
• [6] Van Heek, K. H. 2000. Progress of coal science in the 20th century. Fuel, 79(2000), 1–26.
• [7] Haykiri, A. H., Meriçboyu, A. E., Küçükbayrak, S. 2000. Effect of demineralization on the reactivity of lignites. Thermochimica Acta, 362(2000), 131-135.
• [8] Steel, K. M., Patrick, J. W. 2001. The production of ultra clean coal by chemical demineralization. Fuel, 80(2001), 2019–2023.
• [9] Öztaş, N. A., Yürüm, Y. 2000. Pyrolysis of Turkish Zonguldak bituminous coal. Part 1. Effect of mineral matter. Fuel, 79(2000), 1221–1227.
• [10] Erol, M., Colduroglu, C., Aktas,Z. 2003. The effect of reagents and reagent mixtures on froth flotation of coal fines. International Journal of Mineral Processing, 71(2003), 131–145.
• [11] Steel, K. M., Patric, J. W. 2003. The production of ultra clean coal by sequential leaching with HF followed by HNO3. Fuel, 82(2003), 1917–1920.
• [12] Demirbas¸ A. 2002. Demineralization and desulfurization of coals via column froth flotation and different methods. Energy Conversion and Management, 43(2002), 885–895.
• [13] Vassilev, S. V., Kitano, K., Vassileva, C. G. 1997. Relations between ash yield and chemical and mineral composition of coals. Fuel, 76(1997), 3–8.
• [14] Zolin, A., Jensen, A., Jensen, P. A., Frandsen, F., Johansen, K. D. 2001. The influence of inorganic materials on the thermal deactivation of fuel chars. Energy Fuels, 15(2001), 1110-1122.
• [15] Liua, Q., Hua, H., Zhoua, Q., Zhua, S., Chenb, G. 2004. Effect of inorganic matter on reactivity and kinetics of coal pyrolysis. Fuel, 83(2004), 713-718.
• [16] Mukherjje, S., Borthakur, P. C. 2003. Demineralization of subbituminous high sulphur coal using mineral acids. Fuel Processing Technology, 85(2003), 157-164.
• [17] Alvarez, R., Clemente, C., Limon, D. G. 2003. The influence of nitric acid oxidation of low rank coal and its impact on coal structure. Fuel, 82(2003), 2007–2015.
• [18] Karaca, H., Önal, Y. 2003. Demineralisation of lignites by single and successive pretreatment. Fuel, 82(2003), 1517-1522.
• [19] Gülen, J., Doymaz, İ., Piskin, S., Toprak, S. 2005. removal of mineral matter from Silopi-Harput asphaltite by acid treatment. Energy Sources, 27(2005), 1457–1464.
• [20] Zervent, R., Yağmur, E., Şimşek, E. H., Togrul, T. 2006. Liquefaction of pretreated Turkish coals with microwave energy. Journal of Engineering and Natural Sciences Mühendislik ve Fen Bilimleri Dergisi, 2(2006), 122-131.
• [21] ASTM D 3172-73, Annual Book of ASTM Standards, Easton, 1980.
• [22] ASTM D 3176-74, Annual Book of ASTM Standards, Easton, 1980.
• [23] Canel, M. 1984. Vergasung von Einigien Türkischen Kokse mit Kohlendioxid. Chimica Acta Turcica, 12(1984), 511-521.
• [24] M. Canel. 1978. Examining with Adsorption of Change in Pore Structure at Coking of Seyitömer lignite and Çatalağzı mine coal. Doctoral Thesis. Ankara University. Science Institute. Ankara. 80-100.
• [25] Önal, Y., Ceylan, K. 1995. Effects of treatments on the mineral matter and acidic functional group contents of Turkish lignites. Fuel, 74(1995), 972–977.
• [26] Ralph, T. Y., Subho, K. D., M. Benjamin,C. T. 1985. Coal demineralization using sodium hydroxide and acid solutions. Fuel, 64(1985), 735-742.
• [27] Kingsley, G. 1970. Ch. Ztg. Report, 40(1970), 1916-1920.