Abstract
In this study, fast pyrolysis followed by high intensity dry magnetic (HIDM) separation experiments were conducted to obtain liquid and solid fuels from Çayırhan region lignites. First pyrolysis experiments were performedin a well-swept resistively heated fixed-bed reactor in a nitrogen atmosphere, and pyrolysis temperature and heating rate were studied. Afterwards, pyrolysis, oil, solid and gas products were obtained and characteristics of the oil were determined by elemental analysis and 1H NMR. The highest oil yield (17.58%) was obtained at a pyrolysis temperature of 500oC and heating rate of 350oCmin-1. Under these conditions total sulphur removal and weight yield of char were obtained as 17.24% and 59.21%, respectively. HIDM separation experiments were then carried out by using the char of fast pyrolysis experiments to enable the use of char as a solid fuel by reducing ash and sulphur contents. In the HIDM separation experiments, roller speed, feed rate and angle of back splitter were optimized. After HIDM separation, solid product was analysed for ash, sulphur and higher heating value. At optimum conditions, ash was reduced to 46.72% while total sulphur was not reduced due to lack of size liberation.
References
- Aksoy, Ö.D., Aytar, P., Toptaş, Y., Çabuk, A., Koca, S. and Koca, H. (2014). Physical and Physicochemical Cleaning of Lignite and The Biodesulfurization. Fuel 132,158–164. Cleaning on
- ASTM D4239, Standard Test Methods for Sulphur in The Analysis Sample of Coal and Coke using High-Temperature Tube Furnace Combustion Methods. In: Annual Book of ASTM Standards, American Society for Testing and Materials: West Conshohocken, PA, 2004
- Ateşok, G. (2009). Kömür Hazırlama.Yurt Madenciliği Geliştirme Vakfı, İstanbul.
- Aytar, P., Aksoy, D.O., Toptaş, Y., Çabuk, A., Koca, S. and Koca, H. (2014). Isolation and Characterization of Native Microorganism from Turkish Lignite and Usability at Fungal Desulphurization. Fuel 116, 634-641.
- Erşahan, H., Şara, O.N. and Boncukcuoğlu, R. (1997). Desulphurization of Two Turkish Lignites in An Entrained Flow Reactor. Journal of Analytical and Applied Pyrolysis 44(1), 65–74.
- Hanson, S., Patrick, J.W. and Walker, A. (2002).The Effect of Coal Particle Size on Pyrolysis and Steam Gasification. Fuel 81(5), 531-537.
- Koca, H., Koca, S. and Koçkar, O.M. (2000).Upgrading Lignites by Mild Pyrolysis and High Intensity Dry Magnetic Separation. Source of The Document Minerals Engineering 13 (6), 657-66. Region
- Koca, H., Koçkar, O. M., and Koca, S. (2007). Desulphurization of Lignites by Slow, Fast, and Flash Pyrolysis and High Intensity Dry Magnetic Separation. Energy Sources, Part A: Recovery, Utilization and Environmental Effects (29), 1457–1470.
- Li, X., Xue, Y., Feng, J., Yi, Q., Li, W., Guo, X. and Liu, K. (2015). Co-pyrolysis of Lignite and Shendong Coal Direct Liquefaction Residue. Fuel 144, 342-348.
- Sönmez, Ö. and Giray, E. S. (2001). The Influence of Desulphurization of Two Turkish Lignites by Selective Oxidation. Fuel Processing Technology 70,159-169. Parameters on
- http://www.dektmk.org.tr/pdf/enerji_kongresi_1 0/bolum5/bolum-2.pdf
Abstract
Bu çalışmada, Çayırhan bölgesi linyitlerinin önce hızlı pirolizi, ardından elde edilen katı ürünün
yüksek yoğunluklu kuru manyetik (HIDM) ayırma ile zenginleştirilerek, sıvı ve katı yakıt eldesi
amaçlanmıştır. Hızlı piroliz deneyleri, azot atmosferi altında, sürüklenmeli sabit yatak reaktörde
gerçekleştirilmiş ve piroliz sıcaklığı ve ısıtma hızının etkileri incelenmiştir. Piroliz sonrasında elde
edilen sıvı ürünün yapısı elementel analiz ve 1H NMR ile belirlenmiştir. Hızlı piroliz deneylerinde en
yüksek sıvı ürün verimi %17.58 değeri ile 500oC piroliz sıcaklığı ve 350oCmin-1 ısıtma hızında elde
edilmiştir. Bu piroliz koşullarında katı ürün verimi %59.21 ve elde edilen katı ürünün kükürt giderimi
%17.24 olarak belirlenmiştir. Pirolizden elde edilen katı ürünün, kül ve kükürt içeriğinin azaltılarak, katı
yakıt olarak kullanılmasını sağlamak için HIDM zenginleştirme deneyleri gerçekleştirilmiştir. HIDM
deneylerinde tambur hızı, besleme hızı ve bıçak açısı optimize edilmiş ve en uygun koşullardaki katı
ürünün kül, kükürt ve üst ısıl değerleri belirlenmiştir. Optimum koşullarda katı ürünün kül oranı %46.72
değerine azalırken, toplam kükürt oranında tane serbestleşmesi gerçekleşmediği için azalma
görülmemiştir
References
- Aksoy, Ö.D., Aytar, P., Toptaş, Y., Çabuk, A., Koca, S. and Koca, H. (2014). Physical and Physicochemical Cleaning of Lignite and The Biodesulfurization. Fuel 132,158–164. Cleaning on
- ASTM D4239, Standard Test Methods for Sulphur in The Analysis Sample of Coal and Coke using High-Temperature Tube Furnace Combustion Methods. In: Annual Book of ASTM Standards, American Society for Testing and Materials: West Conshohocken, PA, 2004
- Ateşok, G. (2009). Kömür Hazırlama.Yurt Madenciliği Geliştirme Vakfı, İstanbul.
- Aytar, P., Aksoy, D.O., Toptaş, Y., Çabuk, A., Koca, S. and Koca, H. (2014). Isolation and Characterization of Native Microorganism from Turkish Lignite and Usability at Fungal Desulphurization. Fuel 116, 634-641.
- Erşahan, H., Şara, O.N. and Boncukcuoğlu, R. (1997). Desulphurization of Two Turkish Lignites in An Entrained Flow Reactor. Journal of Analytical and Applied Pyrolysis 44(1), 65–74.
- Hanson, S., Patrick, J.W. and Walker, A. (2002).The Effect of Coal Particle Size on Pyrolysis and Steam Gasification. Fuel 81(5), 531-537.
- Koca, H., Koca, S. and Koçkar, O.M. (2000).Upgrading Lignites by Mild Pyrolysis and High Intensity Dry Magnetic Separation. Source of The Document Minerals Engineering 13 (6), 657-66. Region
- Koca, H., Koçkar, O. M., and Koca, S. (2007). Desulphurization of Lignites by Slow, Fast, and Flash Pyrolysis and High Intensity Dry Magnetic Separation. Energy Sources, Part A: Recovery, Utilization and Environmental Effects (29), 1457–1470.
- Li, X., Xue, Y., Feng, J., Yi, Q., Li, W., Guo, X. and Liu, K. (2015). Co-pyrolysis of Lignite and Shendong Coal Direct Liquefaction Residue. Fuel 144, 342-348.
- Sönmez, Ö. and Giray, E. S. (2001). The Influence of Desulphurization of Two Turkish Lignites by Selective Oxidation. Fuel Processing Technology 70,159-169. Parameters on
- http://www.dektmk.org.tr/pdf/enerji_kongresi_1 0/bolum5/bolum-2.pdf
Details
| Primary Language | English |
|---|---|
| Journal Section | Articles |
| Authors | |
| Publication Date | May 18, 2015 |
| Published in Issue | Year 2015 Volume: 16 Issue: 1 |
