Numerical Simulation of Ventilation Air Methane Counter-Current Oxidation Reaction

Abstract:

In this paper, based on the theoretical analysis and reasonable simplification, one-dimensional mathematical model is presented for the counter-current oxidation of ventilation air methane. The process of counter-current oxidation reaction is simulated by applying the computational fluid dynamics (CFD) software (Fluent), and the effect of the dominating working parameters (such as flow velocity and equivalence ratio and half cycle) are discussed on the temperature and rate of reaction within the counter-current oxidation reaction. The distribution of the temperature field and the reaction rate are simulated when half cycle is 30s, the equivalence ratio is 0.2 and the velocity 0.06 m/s, 0.1m/s and 0.2 m/s. The combustion characteristics are summarized for the device of counter-current oxidation reaction, and the effects of working parameters are analyzed on the burning characteristics. It is so important to increase the combustion efficiency and energy utilization.

• Periodical: Applied Mechanics and Materials (Volumes 52-54)
• Pages: 1520-1525
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.52-54.1520
• Online since: March 2011
• Authors: Ying Hua Wang, Bao Shan Jia, Jun Rui Shi, Yang Bo Deng, Yu Tian
• Keywords: Countercurrent Oxidation, Equivalence Ratio, Half Cycle, Numerical Simulation, Ventilation Air Methane

References

[1] MA Shi-Hu, Xie Mao-Zhao, Deng Yang-Bo. Porous medium reciprocating flow burning a numerical simulation. Journal of Engineering for Thermal Energy and Power, 2004, 19(4), pp.384-388.

[2] XIE M Z, DENG Y B. Experimental study on super adiabatic combustion in porous media with reciprocating flow[C]. The4th Asia-Pacific Conf on Combustion, China, Nanjing: (2003).

[3] DENG YangBo, XIE MaoZhao, Liu HongSheng, Ma ShiHu. Experimental Study on Super adiabatic Combustion in Porous Media with Reciprocating Flow, Journal Combustion science and technology 2004, 10 (1), pp.82-87.

[4] Shi JunRui, Xie MaoZhao. Numerical study of super adiabatic combustion in porous medium by considering the dispersion effect Journal of engineering thermo physics. 2006, 27(3), pp.515-518.

[5] DU Liming, XIE MaoZhao. Numerical Simulation on Reciprocating Super adiabatic Combustion Of Premixed Gases in Porous Media Journal Combustion science and technology, 2005 11(3), pp.230-235.

[6] ZHENG Bin, LIU Yong-Qi, LIU Rui-Xiang, GAO Zhen-Qiang, MENG Jian. Oxidation of coal mine ventilation air methane in thermal reverse-flow reactor. Journal of China Coal Society. 2005, 34(11), pp.1475-1478.

DOI: 10.2174/1874155x01610010148

[7] HOFFMANN J G. Experimental study on combustion in porous media with a reciprocating flow system[J]. Combustion and Flame, 1997, 111(1/2), pp.32-46.

DOI: 10.1016/s0010-2180(97)00099-0

[8] HOWELL J R. Combustion of hydrocarbon fuels within porous inert media [J]. Progress in Energy and Combust Science, 1996, 22(2), pp.121-145.

DOI: 10.1016/0360-1285(96)00001-9

[9] Hanamura K, Echigo R. Super adiabatic combustion in a porous medium [J]. International Journal of Heat and Mass Transfer, 1993, 36(13), pp.3201-3209.

DOI: 10.1016/0017-9310(93)90004-p