Comparison of DRM22 and GRI3.0 Combustion Mechanisms in Creating Flameless Combustion in a Lab-Scale Furnace

Document Type : Review

Authors

1 PhD candidate in mechanical engineering, Sharif University of Technology

2 Professor in mechanical engineering, Sharif University of Technology

Abstract

With the progress of science and technology, new processes were created in combustion, the most important goal of which was to optimize fuel consumption, increase efficiency, and specifically reduce the amounts of gaseous pollutants (such as nitrogen oxides and carbon monoxide). One of these new technologies is flameless combustion, which is based on the preheating of fuel and air and the dilution of oxygen in the air with the recirculation of combustion gases to create a proper mixing of the reactants. In the present study, the flameless combustion of methane gas is simulated in a laboratory combustion chamber. Its results are compared in two modes of using DRM22 (as a reduced mechanism) and GRI3.0 (as a complete mechanism). The results show that the mentioned mechanisms are able to calculate the distribution of temperature and chemical species with an error of 1.66% and 4.7% respectively, and with good accuracy compared to the experimental results. In the case of NOX, despite the 26% difference between the two mechanisms, the GRI3.0 mechanism calculated its concentration slightly more than expected. On average, the DRM22 mechanism is closer to the experimental results and has less calculation time.

Keywords

Main Subjects

References

[1] JA. Wünning, JG. Wünning, "Flameless oxidation to reduce thermal NO formation," Progress in Energy and Combustion Science, vol. 23, No. 1, pp. 81-94, 1997.
[2] قاسم. خبازیان، جواد. امینیان، رامین. حقیقی خوشخو، "پیاده سازی و تحلیل اقتصادی احتراق بدون شعله در یک دیگ بخار آزمایشگاهی"، نشریه علمی- پژوهشی سوخت و احتراق، سال دوازدهم، شماره سوم، 1397.
[3] Ullmann, "Nitric acid, Nitrogen Oxides", Encyclopedia of Industrial Chemistry, vol. A, Germany: VCH Publishers, pp. 297-340, 1989.
[4] AEE. Khalil, VK. Arghode, AK. Gupta, SC. Lee, "Low calorific value fuelled distributed combustion with swirl for gas turbine applications", Applied energy, vol. 98, pp. 69-78, 2012.
[5] Zhiyi. Li, Stefanie Tomasch, Zhi X. Chen, Alessandro Parente, Ivar S. Ertesvå, Nedunchezhian Swaminathan, "Study of MILD combustion using LES and advanced analysis tools", Proceedings of the Combustion Institute, vol. 38, No.4 , pp. 5423-5432, 2021.
[6] Mingming. Huang, Ruichuan Li, Jikang Xu, Shen Cheng, Haoxin Deng, Bing Zhang, Zhiyu Rong, Yue Li, "Effect of thermal input, excess air coefficient and combustion mode on natural gas MILD combustion in industrial scale furnace", Fuel, vol. 302, pp. 121-179, 2021.
[7] M. F. A. Kazakov, Reduced Reaction Sets Based on GRI-Mech 1.2, a 19- species Reaction Set. 2019.
[8] S. Cao, C. Zou, Q Han, Y Liu, D Wu, C Zheng, "Numerical and experimental studies of NO formation mechanisms under methane moderate or intense low-oxygen dilution (MILD) combustion without heated air", Energy & Fuels, vol. 29, No. 3, pp. 1987-1996, 2015.
[9] D. He, Y Yu, Y Kuang, C Wang, "Analysis of EDC constants for predictions of methane MILD combustion", Fuel, vol. 324, pp. 124542, 2022

Files

Share

How to cite

Statistics