Simulation on Different Proportions of Coal and Natural Gas Co-combustion in a Rotary Lime Kiln

Full Text (PDF, 1018KB), PP.17-24

Views: 0 Downloads: 0

Author(s)

Hongyu Gu 1,* Peng He 1 Shuxia Mei 1 Junlin Xie 1 Lixin Song 2

1. Department of Materials Science and Engineering Wuhan University of Technology, Wuhan, China

2. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China

* Corresponding author.

DOI: https://doi.org/10.5815/ijisa.2011.04.03

Received: 6 Jul. 2010 / Revised: 5 Nov. 2010 / Accepted: 16 Feb. 2011 / Published: 8 Jun. 2011

Index Terms

Coal and natural gas co-combustion, rotary lime kiln, fuel proportion, numerical simulation

Abstract

Co-combustion of coal and natural gas is a promising technology in the production of active lime. For this technology, proper fuel proportion of coal and natural gas (α) is one of the key parameters that requires significant thought. By means of numerical simulation, contrast studies on co-combustion with five different fuel proportions were carried out. This paper firstly puts forward the models used to describe the system based on the actual conditions. Then, numerical simulation results were analysed in detail to illustrate the co-combustion process and the velocity and temperature distribution in the kiln. Finally, comparisons of high temperature region, char conversion, length of calcining zone, CO and NOx emission and total heat transfer rate to the material bed were made in order to make a decision on fuel proportion. Synthetically considering, α=30% is a balance between benefits and costs for the rotary lime kiln studied.

Cite This Paper

Hongyu Gu, Peng He, Shuxia Mei, Junlin Xie, Lixin Song, "Simulation on Different Proportions of Coal and Natural Gas Co-combustion in a Rotary Lime Kiln", International Journal of Intelligent Systems and Applications(IJISA), vol.3, no.4, pp.17-24, 2011. DOI:10.5815/ijisa.2011.04.03

Reference

[1]M. R. V. Schwob, et al., "Technical potential for developing natural gas use in the Brazilian red ceramic industry," Applied Energy, vol. 86, pp. 1524-1531, Sep 2009.

[2]K. S. Mujumdar and V. V. Ranade, "Simulation of rotary cement kilns using a one-dimensional model," Chemical Engineering Research & Design, vol. 84, pp. 165-177, Mar 2006.

[3]S. S. Sazhin, et al., "The P-1 model for thermal radiation transfer: Advantages and limitations," Fuel, vol. 75, pp. 289-294, Feb 1996.

[4]H. Peng, et al., "Numerical Simulation of Coal and Natural Gas Co-Combustion in a Rotary Lime Kiln," in Computational Intelligence and Software Engineering, 2009. CiSE 2009. International Conference on, 2009, pp. 1-4.

[5]A. Meier, et al., "Economic evaluation of the industrial solar production of lime," Energy Conversion and Management, vol. 46, pp. 905-926, Apr 2005.

[6]M. Flamme, "Low NOx combustion technologies for high temperature applications," Energy Conversion and Management, vol. 42, pp. 1919-1935, Oct-Nov 2001.