Abstract
High temperature preheated air and steam as gasifying agent and coal gasification was performed in a pressurized turbulent circulating fluidized bed (CFB) gasification pilot plant to investigate the pressurized gasification process and estimate its potential. Within the scope of this paper this test facility as well as its operation behavior was described. Furthermore, the parameter pressure has been investigated regarding its influence on the syngas composition and was presented and discussed in the following. The results show that the gasification quality is improved at higher pressure because of the better fluidization in the reactor. Coal gasification at a higher pressure shows advantages in lower heat value and carbon conversion. With the gasifier pressure increased from 0.1MPa to 0.3MPa, the gas heating value is increased by 15%. Increasing the gasifier pressure would increase the carbon conversion from 57.52% to 76.76%. Also, the dry gas yield and efficiency of cold gas increase little with the increase of the gasifier pressure. The operating parameter of pressure exists at optimum operating range for this specific CFB coal gasification process.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Y. J. Kim, J. M. Lee and S. D. Kim, Fuel, 79, 67 (2000).
Y. T. Fang, J. J. Huang, Y. Wang and B. J. Zhang, Fuel Process Technol., 69, 29 (2001).
R.G. Zhang, Y. J. Na and Q.G. Lu, Chin. Soc. Elec. Eng., 25, 103 (2005).
H. Hirschfelder and H. Vierrath, in Proceedings of 6 th international conference on circulating fluidized beds, Wurzburg, Germany (1999).
L. Rch, Chem. Eng. Tech., 18, 75 (1995).
R. Xiao, B. S. Jin, H.C. Zhou, Z. P. Zhong and M.Y. Zhang, Energy Convers. Manage., 48, 778 (2007).
R. Xiao, M. Y. Zhang and B. S. Jin, Fuel, 86, 1631 (2007).
A. Ocampo, E. Arenas and F. Chejne, Fuel, 82, 161 (2003).
J. M. Lee, Y. J. Kim and W. J. Lee, Energy, 23, 475 (1998).
H. T. Bi, N. Ellis, A. Abba and J.R. Grace, Chem. Eng. Sci., 55, 4789 (2000).
Y.C. Choi, J.G. Lee, J.H. Kim, J. C. Hong, Y. K. Kim, S. J. Yoon, S. H. Lee and M.H. Park, Korean J. Chem. Eng., 23, 380 (2006).
P. Cai, S. P. Chen and Y. Jin, CIESC J., 2, 18 (1990).
D. Bai, Y. Jin and Z. Yu, Chem. Eng. Technol., 16, 307 (1993).
B. Li, Y. J. Huang and B. S. Jin, J. Southeast University, 39, 998 (2009).
H.C. Zhou, B. S. Jin and Z. P. Zhong, Korean J. Chem. Eng., 24, 489 (2007).
S. Sugiyama, N. Suzuki and Y. Kato, Energy, 30, 399 (2005).
T. Varadi and J.R. Grace, in High pressure fluidization in a two-dimensional bed, J. F. Davidson and D. L. Keairns, Eds., Cambridge University Press, Cambridge (1978).
R. Xiao, M.Y. Zhang and B. S. Jin, Energy and Fuel, 20, 715 (2006).
N. Niksa, G. Liu and R.H. Hurt, Prog. Energy Combust. Sci., 29, 425 (2003).
E. Kurkela and P. Stahlberg, Fuel Process. Technol., 31, 1 (1992).
M. S. J. Apnold, J. J. Gale and M. K. Laughlin, Can. J. Chem. Eng., 70, 991 (1992).
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Feng, D., Jin, BS., Huang, YJ. et al. Reasearch on the main factors for changes in pressure based on turbulent circulating fluidized bed coal gasification technology. Korean J. Chem. Eng. 27, 1707–1714 (2010). https://doi.org/10.1007/s11814-010-0266-8
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11814-010-0266-8