MİKRODALGA ENERJİ KULLANARAK KÖMÜRDEN METALURJİK KOK ELDESİ

Öz

Bu çalışmada, mikrodalga enerjinin kömürden kok elde edilmesine etkisi araştırılmıştır. Yaklaşık 3 mm altına öğütülen ve 3 kW’lık bir mikrodalga güç, 60 ve 120 saniye olmak üzere farklı sürelerde mikrodalga enerjiye maruz bırakılan kömür örnekleri ile laboratuvar ölçekli deneysel çalışmalar gerçekleştirilmiştir. Elde edilen kokun dayanım özellikleri iki farklı ticari kok örnekleri ile de mukayese edilmiştir.

Anahtar Kelimeler

• Mikrodalga enerji, taşkömürü, kok, dayanım testi

METALLURGICAL COKE PRODUCTION FROM COAL USING MICROWAVE ENERGY

Abstract

In this study, the effect of microwave energy on coke making from coal has been investigated. A series of batch experiments were carried out using a 3 kW microwave to heat 220 g of a bituminous coal, sized at -3 mm, at different times of 60 and 120 min. The strength properties of the cokes made by microwave treatment were compared with two commercial cokes.

Keywords

• Microwave energy, bituminous coal, coke, strength test1

Kaynakça

1. Van Krevelen, D.W., “Coal: Typology-Physics-Chemistry”-3rd completely revised edition”, Amsterdam, The Netherlands, Elsevier Science Publishers. 1993.
2. Haque, K.E., “Microwave Energy for Mineral Treatment Processes-a Brief Review”, International Journal of Mineral Processing, 57, 1-24, 1999.
3. Standish, N., Worner, H., “Microwave Reduction of Iron Ores”, Iron and Steelmaking, 18 (5), 59-61, 1991.
4. Kingman, S.W., Rowson, N.A., “The Effect of Microwave Radiation on the Magnetic Properties of Minerals”, Journal of Microwave Power and Electromagnetic Energy, 35, 3, 144-150, 2000.
5. Jones, D.A., Lelyveld, T.P., Mavrofidis, S.D., Kingman, S.W., Miles, N.M., “Microwave Heating Applications in Environmental Engineering- A review”, Resources, Conservation and Recycling, 34, 75-90, 2002.
6. Marland, S., Han, B., Merchant, A., Rowson, N., “The effect of microwave radiation of coal grindability”, Fuel, 79, 1283-1288, 2000.
7. Lester, E., Kingman, S.W., “Effect of microwave heating on the physical and petrographic characteristics of a UK coal”, Energy and Fuel, 1-8. 2003.
8. Lester, E., Kingman, S.W., Dodds, C., “Increased coal grindability as a result of microwave pretreatment at economic energy inputs”, Fuel, 84(4), 423-427, 2005.

9. Arsh, E.I., Krasin, L.A., Nosov, G.R., “Frequency characteristics of the electrical properties of coals and country rocks in the western donbass”, Soviet Mining Journal, 1 65-8, 1969.
10. Marland, S., Merchant, A., Rowson, N., “Dielectric properties of coal”, Fuel, 80, 1839-1849, 2001.
11. Sen, D.K., Sen-Gupta, S.K., Kini, K.A., Lahiri, A., “Studies on the dielectric properties of Indian coals: Part I-Effect of acetylation and hydrogenation of coal on its dielectric behaviour”, Journal of Scientific and Industrial Research, 19B 184-6, 1960.
12. Honda, H., “The change in magnetic properties in carbonization and graphitization of coal”, Third Conference on Carbon, 159-164, Buffalo, Pergamon Press. 1959.
13. Wagener, D., Fach, H., Ergun, H., “Process and apparatus for coking coal using microwave radiation”, US, Didier Engineering US4282066. 1981.
14. Takanohashi, T., Kawashima, H., “Construction of a model structure for upper freeport coal using”, 13 C NMR chemical shift calculations, Energy and Fuels, 16 (3), 379-387, 2002.
15. Takagi, H., Maruyama, K., Yoshizawa, N., Yamada, Y., Sato, Y., “XRD analysis of carbon stacking structure in coal during heat treatment”, Fuel, 83(17-18), 2427-2433, 2004.
16. Elliot, M.A., “Chemistry of coal utilization”, Second supplementary volume, New York, Wiley and Sons. 1981.
17. Gray, R.J., “Coal to coke conversion. Introduction to carbon science”, H.Marsh, London, Butterworths, Chapter 9: 285–321, 1989.
18. Ludlow-Palafox, C., Chae, H.A., “Microwave-induced pyrolsis of plastic wastes”, Industrial and Engineering Chemistry Research, 40, 4749-4756, 2001.
19. Lowry “Chemistry of coal utilization”-Supplementary volume, New York, Wiley and Sons. 1963.
20. Yang, K.S., Yoon, Y.J., Lee, M.S., Lee, W.J, Kim, J.H., “Further carbonization of anisotropic and isotropic pitch-based carbons by microwave irradiation”, Carbon, 40(6), 897-903, 2002.
21. Lester, E., Kingman, S., Dodds, C., Partrick, J., “The potential for rapid coke making using microwave energy”, Fuel, 85, 2057-2063, 2006