Investigations on Combustion of Coal by Static Pressure and Volume Fraction of Ash In CFBC Boiler Using CFD

Authors

  • Suresh K. Badholiya  Energy Technology, RGPV University, Bhopal, Madhya Pradesh, India
  • S. K. Pradhan  Mechanical Engineering, NITTTR, Bhopal, Madhya Pradesh, India
  • Anil Kothari  Mechanical Engineering, RGPV University, Bhopal, Madhya Pradesh, India

Keywords:

Ash Agglomeration, CFD, Fluent, CFBC boiler, Lignite coal, Pressure, Volume fraction

Abstract

Objective of this study is to develop a two-dimensional Circulating Fluidized Bed Combustion (CFBC) Boiler with cyclone solid separator using ANSYS Fluent Computational Fluid Dynamics (CFD). The numerical simulation model presented in this study is aimed at combustion of lignite coal in boiler. The simulations were done using different approaches for how the flow is driven through the CFB system. For agglomeration phenomenon contours studied static pressure and volume fraction of ash. This study is more concerned about finding the location of formation of ash agglomeration and pressure of these areas. CFD modeling is used to find out the location the ash agglomeration phenomenon in the Circulating fluidized bed combustion boiler.

References

  1. M. Lakshminarasimhan, B. Ravikumar,A.Lawrence, and  M.Muthukrishnan, “High Sulfur Lignite Fired Large CFB  Boilers-Design and Operating Experience” 10th International  Conference on Circulating Fluidized Beds and Fluidization  Technology- CFB-10
  2. S.Datta, P.Sarkar, P.D.Chavan, S.Saha, G.Sahu, A.K.Sinha, V.K.Saxena, Agglomeration behavious of high ash Indian coals in fluidized bed gasification pilot plant, Applied Thermal Engineering 86 (2015) 222-228
  3. Nevin Selcuk, Mert Ozkan, Simulation of Circulating fluidize bed combustors firing indigenous lignite, International Journal of Thermal Science 50(2011) 1109-1115
  4. Prabir Basu, Scott A. Fraser, Circulating Fluidized Bed Boilers Design and Operation, Butterowrth-Heinemann USA, 1991page no.7
  5. Xin Yang,Derek Ingham, Lin M,Hao Zhou, Mohamed Pourkashanian, Understanding the  ash deposition formation in Zhundong lignite combustion through dynamic CFD modelling analysis, Fuel 194 (2017) 533–543
  6. Selvakumaran P, Lawerence A, Lakshminarasimhan M and Bakthavatsalam AK, Mineralogical influence of mining intrustions in CFB combustion of Indian lignite, International Journal of Energy and Environmental Engineering 2013, 4:34
  7. C.Tangsathitkulchai, M. Tangsathitkulchai Z. Effect of bed materials and additives on the sintering of coal ashes relevant to agglomeration in fluidized bed combustion, Fuel Processing Technology 72 2001 163–183
  8. D.H. Barnhart, P.C. Williams, Trans. AIME (78) (1956) 1229.
  9. M. Tangsathitkulchat, L.G. Austin, Fuel (64) (1985) 86–92.
  10. R.C. Brown, M.R. Dawson, J.L. Smeenk, Bed material agglomeration during fluidized bed combustion, Final Report to the US Department of Energy DOE ,  DE96007754XPS, 1996.
  11. A.R. Manzoori, Fuel 73 (4)(1994) 563.
  12. B.-M. Steenari, O. Lindqvist, V. Langev, Fuel 77 (5)(1998) 407–417.
  13. S.P. Bhattacharya, A. Kosminski, H. Yan, H.B. Vuthaluru, Combustion of Victorian and South Australian low- rank coals in a circulating fluidized bed combustion pilot plant. The Ninth Japan Australian Joint Technical Meeting on Coal, Melbourne, June 1–2, 1999.
  14. Kaer SK, Rosendahl LA, Baxter LL. Towards a CFD-based mechanistic deposit formation model for straw- fired boilers. Fuel 2006;85:833–48.
  15. R., L., Applied CFD Techniques, An introduction based on finite element methods. 2001, West Sussex, UK: John Willey & Sons Ltd.(2001).

Downloads

Published

2018-05-30

Issue

Section

Research Articles

How to Cite

[1]
Suresh K. Badholiya, S. K. Pradhan, Anil Kothari, " Investigations on Combustion of Coal by Static Pressure and Volume Fraction of Ash In CFBC Boiler Using CFD , International Journal of Scientific Research in Science and Technology(IJSRST), Online ISSN : 2395-602X, Print ISSN : 2395-6011, Volume 5, Issue 3, pp.197-202, May-June-2018.