.png)
2.png)
Numerical Study Effect of Fluidizing Air to Erosion Pattern in Circulating Fluidized Bed Boiler
Abstract
Bed material particles in a Circulating Fluidized Bed (CFB) boiler which entrained in the flue gas may cause material degradation due to abrrasive and high velocity impact of particles to wall surface. In this study, Computational Fluid Dynamic (CFD) commercial software with Eulerian multiphase is used to study the erosion pattern in several different fluidizing air velocity. The result obtained from simulation in terms of particles volume fraction and particles velocity in selected area was utilised to predict the erosion rate in several different fluidizing air velocity to achieve the optimal value of fluidizing air velocity. The results obtained in this study are helpful to understand how erosion pattern in CFB boiler, how effect fluidizing air velocity to erosion rate, and also helped to know the potential areas occur erosion so helped to choose suitable material in different region.
Full Text:
PDFReferences
M. Ozkan, “Simulation of circulating fluidized bed combustors firing indigenous lignite,” Master’s thesis, Dept. Chemical. Eng., Middle East Technical Univ, 2010.
P. Basu, “Hydrodynamics,” in Circulating Fluidized Bed Boilers, pp. 17–47, Springer, 2015.
M. B. Gandhi, R. Vuthaluru, H. Vuthaluru, D. French, and K. Shah, “Cfd based prediction of erosion rate in large scale wall-fired boiler,” Applied Thermal En gineering, vol. 42, pp. 90–100, 2012.
I. Afrooz, C. Sinnathambi, S. Karuppanan, and D. Ching, “Cfd simulation of bubbling fluidized bed: Effect of distributor plate orifice pattern configura tion on hydrodynamics of gas-solid mixing,” ARPN J. Eng. Appl. Sci, vol. 11, pp. 11954–11959, 2006.
V. Tanskanen et al., “Cfd study of penetration and mixing of fuel in a circulating fluidized bed furnace,” 2005.
A. S. Kinkar, G. Dhote, and R. Chokkar, “Cfd simu lation on cfbc boiler,” Int. J. Sci. Technol. Res, vol. 4, no. 2, pp. 34–39, 2015.
P. Basu, Combustion and gasification in fluidized beds. CRC press, 2006.
J. Mbabazi, T. Sheer, and R. Shandu, “A model to predict erosion on mild steel surfaces impacted by boiler fly ash particles,” Wear, vol. 257, no. 5-6, pp. 612–624, 2004.
B. Sudarmanta et al., “Simulasi numerik sistem in jeksi bertingkat pada ruang bakar mesin diesel cater pillar 3406,” in Proceeding Seminar Nasional Tahunan Teknik Mesin XI (SNTTM XI) Thermofluid IV Universi tas Gadjah Mada (UGM), Yogyakarta, 16-17 Oktober 2012, 2015.
R. Kumar and K. Pandey, “Cfd analysis of circulating fluidized bed combustion,” Engineering Science and Technology, vol. 2, no. 1, pp. 163–174, 2012.
D. Gidaspow, “Hydrodynamics of fiuidizatlon and heat transfer: Supercomputer modeling,” Applied Mechanics Reviews, vol. 39, no. 1, pp. 1–23, 1986.
B. Sudarmanta, R. M. Wijayanto, A. Syaifudin, and G. Nugroho, “Studi numerik pengaruh diameter bed material terhadap karakteristik fluidisasi pada cir culating fluidized bed boiler beban 28.6 mw,” in Proc. Seminar Nasional Teknik Mesin XII, Surabaya, pp. 5–9, 2017.
B. A. Muliawan, B. Sudarmanta, A. Syaifudin, and G. Nugroho, “Studi numerik variasi volume pasir terhadap efisiensi boiler circulation fluidized bed combustion,” in Proc. Seminar Nasional Teknik Mesin XII, Surabaya, pp. 10–14, 2017.
DOI: http://dx.doi.org/10.12962/j25807471.v1i2.3901
JMES The International Journal of Mechanical Engineering and Sciences by Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) ITS is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Based on a work at https://iptek.its.ac.id/index.php/jmes.