Study on the Contamination Coefficient of Convective Heating Surface in a Circulating Fluidized Bed Boiler

Yu Zhao Wang; Xue Min Liu; Ai Cheng Liu; Qing Liu; Jian Chun Zhang; Wen Bin Jiang

doi:10.4028/www.scientific.net/AMR.732-733.286

Paper Titles

On Application of Looped Pulsating Heat-Pipe in High-Power LED for Street Light
p.265

Research on Aerodynamic Characteristics of Air-Cooled Turbine Blade with Conjugate Heat Transfer Method
p.270

Research on Coordinated Control System for Boiler-Turbine Units Based on Fractional-Order Control
p.276

Simulation of Main Steam Temperature Control System Based on Fuzzy PID and Improved Smith Predictor
p.280

Study on the Contamination Coefficient of Convective Heating Surface in a Circulating Fluidized Bed Boiler
p.286

Study on the Optimal Running Temperature of Circulating Fluidized Bed Boiler Burning Fujian Anthracite
p.291

The Calculation of Heat Transfer of Surface Type Heat Exchanger
p.297

The Design Optimization Method of Steam Turbine Cold End in Coal-Fired Power Plant
p.301

The Experimental Research on Instantaneous Efficiency of PV/T Module Based on Micro Heat Pipe Array
p.306

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 732-733Study on the Contamination Coefficient of...

Study on the Contamination Coefficient of Convective Heating Surface in a Circulating Fluidized Bed Boiler

Abstract:

The ash deposition and the gas velocity affect the exhaust gas temperature of a CFB boiler. The surface contamination in a CFB boiler is quite different from that one in the pulverized coal boiler. It is suggested that the surface contamination in a CFB boiler should be determined according to the ash content in the fuel as well as the cyclone collection efficiency. The effect of the gas velocity on the surface contamination is very important. The lower gas velocity causes more serious contamination, leading to the higher exhaust gas temperature. The staged tube arrangement should be employed. And the gas velocity should be designed higher to enhance the self-cleaning ability. Anyway, the soot blower should be designed in the CFB boiler convective heating surface. The ratio of the practical contamination coefficient to the design one, k, is the strong function of gas velocity, w_y, which was expressed as: k=1+exp(6.8-w_y)

You might also be interested in these eBooks

Thermal, Power and Electrical Engineering

View Preview

Info:

Periodical:

Advanced Materials Research (Volumes 732-733)

Pages:

286-290

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.732-733.286

Citation:

Cite this paper

Online since:

August 2013

Authors:

Yu Zhao Wang, Xue Min Liu, Ai Cheng Liu, Qing Liu, Jian Chun Zhang, Wen Bin Jiang

Keywords:

CFB Boiler, Contamination Coefficient, Exhaust Gas Temperature, Gas Velocity

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] G. Yue, J. Lu, H. Zhang, et al, in: Proceeding of the 18th International Conference on Fluidized Bed Combustion, edited by L. Jia ASME, Toronto (2005).

Google Scholar

[2] X. Zhao, J. Lu, J. Yang, et al, in: Proceeding of the 18th International Conference on Fluidized Bed Combustion, edited by L. Jia ASME, Toronto (2005).

Google Scholar

[3] X. Hou, J. Zhang, J. Wang, et al: Boiler Technology Vol. 38 (2007), p.19，in Chinese.

Google Scholar

[4] J. Lu, J. Feng, in: Proceeding of the 5th International Symposium on Coal Combustion, edited by X. Xu, C. Zhao, Nanjing (2004).

Google Scholar

[5] Q. Diao, K. Zhou, X. Xu: Boiler Technology Vol. 38 (2007), p.10, in Chinese.

Google Scholar

[6] Z. Hu, C. Zhou: Shandong Electric Power Vol. 4 (2004), p.46, in Chinese.

Google Scholar