Volume 19, Issue 5 (May 2019)                   Modares Mechanical Engineering 2019, 19(5): 1095-1101 | Back to browse issues page

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Hajilary N, Rezakazemi M. Optimization of Combustion Burner at Hoffman Brick Factories. Modares Mechanical Engineering 2019; 19 (5) :1095-1101
URL: http://mme.modares.ac.ir/article-15-17776-en.html
1- Chemical Engineering Department, Engineering Faculty, Golestan University, Gorgan, Iran , n.hajilari@gu.ac.ir
2- Department of Chemical Engineering, Faculty of Chemical & Materials Engineering, Shahrood University of Technology, Shahrood, Iran
Abstract:   (8062 Views)

The combustion system used by the Hoffman furnaces for brick factories has a very low efficiency. In the current paper, the performance of the combustion system of Hoffman furnaces of Kolet Pottery Brick Co has improved, using computational fluid dynamics (CFD) by making changes to the Hoffman furnace torch, including the converging the torch head, inserting the spring in the pipe to create the swirl flow, shortening the nozzle length for the better mixing of the fuel and air, and more. The changes were simulated in each step with the FLUENT simulation software. Based on the theoretical results and simulation, optimized torch was made and a field test was carried out on it in a brick factory and the gases from their combustion were analyzed. As a result of these reforms, the combustion efficiency of the Hoffman furnaces has increased from 27% to 47 %, and consumption of fuel oil has decreased by a third. Also, the CO value of 16854 ppm in the old torch was reduced to 298 ppm in the optimized torch and the NO value ranged from 49 to 18 ppm as a result of optimizations.

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Article Type: Original Research | Subject: Internal Combustion Engine
Received: 2018/03/16 | Accepted: 2018/12/4 | Published: 2019/05/1

1. Mancuhan E, Kucukada K. Optimization of fuel and air use in a tunnel kiln to produce coal admixed bricks. Applied Thermal Engineering. 2006;26(14-15):1556-1563. [Link] [DOI:10.1016/j.applthermaleng.2005.12.002]
2. Gomes E, Hossain I. Transition from traditional brick manufacturing to more sustainable practices. Energy for Sustainable Development. 2003;7(2):66-76. [Link] [DOI:10.1016/S0973-0826(08)60356-7]
3. Sattari S, Avami A. Analysis and assessment of energy situation of brick industry in Iran. Proceedings of the WSEAS International Conference on Energy Planning, Energy Saving, Environmental Education, 14-16 October, 2007, Arcachon, France. Arcachon: WSEAS; 2007. [Link]
4. Tehzoeb AH, Bhuiyan M, Jayasuriya N. Evaluation of brick kiln performances using computational fluid dynamic. Energy and Environmental Engineering. 2013;1(2):86-93. [Link]
5. Mammahdi Heravi H, Bidkhori M, Sayerd N. 3D simulation of flow in a rotary torch. 2nd Iranian Combustion Conference, 24 January-12 February, 2008, Mashhad, Iran. Tehran: Iranian Combustion Institute; 2007. [Persian] [Link]
6. Hosseinali Pour SM, Bagh sheikhi M, Raja A, Barghi MH. Numerical simulation of Shazand Arak gas torches to improve combustion process. 7th Conference of Electricity Powerhouse, 18-19 February, 2015, Bandar Abbas, Iran. Bandar Abbas: Management Company of Electricity Powerhouse; 2015. [Persian] [Link]
7. Mousavi Tarshizi SE, Rafiei A, Saadati E. Simulation of Shazand power plants by numerical method and investigating the effect of primary air on the shape and location of the flame. 20th International Power Conference, 14-16 November, 2005, Tehran, Iran. Tehran: Tavanir Company; 2005. [Persian] [Link]
8. Hashem Abadi SH, Sheikhani H, Pishbin SI. Investigation of the effect of fusion mixing on the operation of heaters of natural gas pressure decompression station using simulation of CFD. 20th Annual Conference of Mechanical Engineering, 15-17 May, 2012, Shiraz, Iran. Shiraz: University of Shiraz; 2012. [Persian] [Link]
9. Gupta AK, Lilley DG, Syred N. Swirl flows. 1st Edition. Tunbridge Wells: Abaqus Press; 1984. [Link]
10. Feikema D, Chen RH, Driscoll JF. Enhancement of flame blowout limits by the use of swirl. Combustion and Flame. 1990;80(2):183-195. [Link] [DOI:10.1016/0010-2180(90)90126-C]
11. Kerr NM. Swirl effect on flame performance and the modeling of the swirling flames. Journal of the Institute of Fuel. 1965;38(299):527-538. [Link]
12. Mathur ML, Maccallum NR. Swirling air tests issuing from vane swirlers. Journal of the Institute of Fuel. 1976;41:238-240. [Link]
13. Buckley PL, Craig RR, Davis DL, Schwartzkopf KG. The design and combustion performance of practical swirlers for integral rocket/ramjets. AIAA Journal. 1983;21(5):733-740. [Link] [DOI:10.2514/3.8141]
14. Tummers MJ, Hübner AW, Van Veen EH, Hanjalić K, Van Der Meer TH. Hysteresis and transition in swirling nonpremixed flames. Combustion and Flame. 2009;156(2):447-459. [Link] [DOI:10.1016/j.combustflame.2008.10.027]
15. Yu B, Kum SM, Lee CE, Lee S. Effects of exhaust gas recirculation on the thermal efficiency and combustion characteristics for premixed combustion system. Energy. 2013;49:375-383. [Link] [DOI:10.1016/j.energy.2012.10.057]
16. Nimvari ME, Maerefat M, Khosravi El-Hossaini M, Jouybari NF. Numerical simulation of combustion inside a cylindrical porous burner including turbulence effects. Modares Mechanical Engineering. 2014;13(12):36-74. [Persian] [Link]
17. Rouhani A, Tabe Jamaat S, Adeli A. Experimental study of the effect of rotation and reduction of oxidizing on the sustainability of non-condensed combustion of natural gas. 3rd Combustion Conference of Iran, 22-23 Feb, 2009, Tehran, Iran. Tehran: Iranian Combustion Institute; 2009. [Persian] [Link]
18. Smith J, McCabe W, Harriott P, emeritus. Unit operation of chemical engineering. New York: McGraw Hill; 2004. [Link]

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