Gündüz ATEŞOK, Hayrünnisa DİNÇER, Feridun BOYLU

Kömür su karışımları tekolojisinde farklı yapıdaki Türk kömürlerinin stabilite özellikleri

Yapılan çalışma kapsamında; Zonguldak bitümlü, Soma yarıbitümlü ve İstanbul-Yeniköy linyit kömürleri ile hazırlanan kömür-su karışımlarının (KSK) stabilite özellikleri incelenmiştir. Polimerik yapıda Sodyum polistiren sülfonat' ın (PSS) dispersan ve Karboksi metil selüloz' un (CMC) stabilizör olarak kullanıldığı çalışmalarda; kömür cinsi, kömür boyutu, CMC konsantrasyonu ve bekletme süresinin stabilite üzerindeki etkileri incelenmiştir.

Stability properties of Turkish coals in different rank for the technology of coal-water slurries

In this study, stability properties of coal water slurries have been investigated. Experiments have been carried out on the coal samples which different in rank. Besides two different Turkish Lignites (Soma and Istanbul) also a bituminous coal (Thermal Code No. 434) of Turkish origin (Zonguldak) with medium volatile matter has been used. As an dispersant agent polymeric sodium polystren sulfonate (PSS) and as an stabilizer agent carboxymethyl cellulose (CMC) have been used. During the tests; the effect of coal type, particle size, CMC concentration and duration on the stabilization have been investigated.

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Ateşok, G., Boylu, F., Sirkeci, A. A. & Dinçer, H., 2002a, The effect of coal properties of coal-water slurries, Fuel, 81, 1855-1858.
Ateşok, G., Boylu, F., Sirkeci, A. A., 2002b. Rhelogical behaviour of low rank turkish coal-water slurries, Proceedings of IXth Int. Mineral Processing Symp. Kapodakya, Türkiye, 208-210.
Boylu, F. & Ateşok, G., 1999. Çevre dostu yeni bir enerji hammaddesi: kömür-su karışımları, Türkiye'de Kömür Politikaları ve Temiz Kömür Teknolojileri Sempozyumu, 21-22 Ekim, Ankara, 154-161.
Boylu, F. & Ateşok, G., Acarkan, N. & Koçak, E., 2001. Determining properties of some turkish lignites for the coal water slurry technology, Proceedings of The 9th Balkan Mineral Processing Congress, İstanbul, Türkiye, 395-400.
Boylu, F., 2003, Kömür-Su karışımları teknolojisi ve bu teknolojinin Türk kömürlerine- uygulanabilirliği, Doktora Tezi, İTÜ, Fen Bilimleri Enstitüsü.
Boylu, F., Dinçer, H., Ateşok, G., 2004, Effect of coal partide size distribution, volume fraction and rank on the rheology of coal-water slurries, Fuel Processing Technology, 85, Mart, 241-250.
Dinçer, H., Boylu, F. & Ateşok, G., 2002a. Stabilization of coal water slurries and its standartization, Proceedings of 19th Int. Pittsburgh Coal Conference, Pittsburgh-USA. ISBN 1-890977-19-5.
Dinçer, H., Boylu, F., Sirkeci, A. A. & Ateşok, G., 2002b. The effect of chemicals on the viscosity and stability of coal-water slurries", Int. Journal Of Mineral Processing, 70, 41-51.
Hamieh, T., Siffert, B., 1993. Rheolgical properties of coal-water hihgly concentrated suspensions, Proceedings of the 18th Int. Technical Conference on Coal Utilization and Fuel systems, Clearwater, Florida, USA, 809-820.
Hashimoto, N., 1999. CWM: Its Past, Present and Future, Coal Preparation, 21.
Kaji, R., Muranaka, Y., Otzuka, K. & Hishinuma, Y., 1985. Effect of ions on the rheology of CWM, Proceedings of 7th Int. Symp. On Coal Slurry Fuels preparation and Utilization, May, Louisiana, USA, 16-23.
Laskowski, J. S., 1999. Does it matter how coals are cleaned for CWS", Coal Preparation, 21,105-123.
Laskowski, J. S., 2001. Coal Flotation and Fine Coal Utilization, published by Elsevier.
NEDO (New energy and Industrial Technology Development Organization), 1997. CWM in Japan, International Cooperation Project for Coal Utilization Technology, March.
Yavuz, R., 1996. Linyit-su karışımlarının incelenmesi, Doktora tezi, İstanbul Teknik Üniversitesi, Fen Bilimleri Enstitüsü, İstanbul, Türkiye
Zang, Z., Zhang, L., Fu, X., & Jiang, L., 1993. Additive for coal-water slurry made from weak slurriability Coal, 18th Int. Tech. Conference on Coal Utilization & Fuel Systems, Florida, USA, 361-367.