DOI: https://doi.org/10.15587/1729-4061.2018.143316

Research into the impact of structural features of combustion chamber in energy-technological units on their operational efficiency

Valeriy Nikolsky, Olga Oliynyk, Viktor Ved, Andrii Pugach, Ramzan Turluev, Oleksandr Alieksandrov, Viacheslav Kosarev

Abstract


The experimental studies of the influence of the degree of masonry development (geometry) and aerodynamics of the combustion chambers (circuits of combustion products removal) on the energy-technological indicators of the processes in the system gas-solid (in combustion chambers) were carried out.

The experimental research into the influence of geometry and aerodynamics of the combustion chamber on the energy-technological indicators in the system gas – solid body was conducted at the industrial large-scale fire bench.

It was shown that a decrease in the height of the working space of the combustion chamber, equipped with flat flame burners, affects the use of fuel due to heat exchange intensification, including direct convection. The dependence is caused by a decrease in heat losses with flue gases and due to a decrease in losses through the masonry.

It was established that at the height of the working space of 800÷1,000 mm of the combustion furnace, fuel consumption decreases by 20÷30 %.

The design of the combustion space of the furnace of continuous operation mode was developed. The distinctive feature of the furnace of the developed design is the elimination of discreteness and implementation of the stable continuous operation mode of the heating unit. The longitudinal channels were made on the lateral surfaces of the cars and the furnace along the entire length of the latter, which makes it possible to implement the continuous removal of combustion products from the combustion space through canalized hearth of the cars into the longitudinal lateral channels, made in the walls of the furnace. Additional aerodynamic compaction of the working space of the furnace is ensured at any speed of the motion of the cars.

It was found that energy-technological efficiency at the arch heating of the combustion units with flat flame burners and combustion products removal under the workpiece (lower smoke removal) is on average by 1.3 times higher than at use of the circuit of products removal above the workpiece (lateral smoke removal), which is used in currently operating furnaces.

The design was developed and the tunnel furnace was put into operation. It was for chemical and thermal treatment of metallic and non-metallic materials and products during their heating by the assigned schedule.


Keywords


combustion chamber; aerodynamics; flat flame burner; tunnel furnace; temperature of combustion products

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References


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Askarova, A. S., Bolegenova, S. A., Maksimov, V. Y., Bekmuhamet, A., Ospanova, S. S. (2012). Numerical Research of Aerodynamic Characteristics of Combustion Chamber BKZ-75 Mining Thermal Power Station. Procedia Engineering, 42, 1250–1259. doi: https://doi.org/10.1016/j.proeng.2012.07.517

Bulat, G., Jones, W. P., Marquis, A. J. (2013). Large Eddy Simulation of an industrial gas-turbine combustion chamber using the sub-grid PDF method. Proceedings of the Combustion Institute, 34 (2), 3155–3164. doi: https://doi.org/10.1016/j.proci.2012.07.031

Oleynik, O. Yu., Taranenko, Yu. K. (2017). Vibrosterzhnevye chastotnye preobrazovateli temperatury. Vymiriuvalna ta obchysliuvalna tekhnika v tekhnolohichnykh protsesakh, 3, 58–64.

Oliynyk, O., Taranenko, Y., Losikhin, D., Shvachka, A. (2018). Examining the Kalman Filter in the field of noise and interference with the non-Gaussian distribution. Eastern-European Journal of Enterprise Technologies, 4 (4 (94)), 36–42. doi: https://doi.org/10.15587/1729-4061.2018.140649


GOST Style Citations


Kapustin V. M., Rudin M. G., Kudinov A. M. Osnovy proektirovaniya neftepererabatyvayushchih i neftekhimicheskih predpriyatiy. Moscow: Himiya, 2012. 440 p.

Eynard J., Grieu S., Polit M. Modular approach for modeling a multi-energy district boiler // Applied Mathematical Modelling. 2011. Vol. 35, Issue 8. P. 3926–3957. doi: https://doi.org/10.1016/j.apm.2011.02.006 

Heating and Cooling of Buildings: Principles and Practice of Energy Efficient Design / Reddy A., Kreider J. F., Curtiss P. S., Rabl A. CRC Press, 2016. 862 p.

Muhutdinov A. R., Vahidova Z. R., Efimov M. G. Modelirovanie processa goreniya tverdogo topliva v topochnom ustroystve // Vestnik Kazanskogo tekhnologicheskogo universiteta. 2014. Vol. 17, Issue 20. P. 114–116.

Rabaçal M., Fernandes U., Costa M. Combustion and emission characteristics of a domestic boiler fired with pellets of pine, industrial wood wastes and peach stones // Renewable Energy. 2013. Vol. 51. P. 220–226. doi: https://doi.org/10.1016/j.renene.2012.09.020 

Iguchi M., Ilegbusi O. J. The Coanda Effect // Modeling Multiphase Materials Processes. 2010. P. 41–88. doi: https://doi.org/10.1007/978-1-4419-7479-2_3 

Nikolsky V., Yariz V., Reshetnyak I. Improvement of energy efficiency in the operation of a thermal reactor with submerged combustion apparatus through the cyclic input of energy // Eastern-European Journal of Enterprise Technologies. 2017. Vol. 2, Issue 8 (86). P. 39–44. doi: https://doi.org/10.15587/1729-4061.2017.97914 

Design and study of the energy­efficient unified apparatuses for energy­technological manufacturing / Nikolsky V., Oliynyk O., Ved V., Svietkina О., Pugach А., Shvachka A. // Eastern-European Journal of Enterprise Technologies. 2018. Vol. 3, Issue 8 (93). P. 59–65. doi: https://doi.org/10.15587/1729-4061.2018.132572

Thermal treatment of concentrated liquid toxic waste and automatic control of process efficiency / Nikolsky V., Oliynyk O., Shvachka A., Nachovnyy I. // Eastern-European Journal of Enterprise Technologies. 2017. Vol. 5, Issue 10 (89). P. 26–31. doi: https://doi.org/10.15587/1729-4061.2017.111846 

Li L., Peng X. F., Liu T. Combustion and cooling performance in an aero-engine annular combustor // Applied Thermal Engineering. 2006. Vol. 26, Issue 16. P. 1771–1779. doi: https://doi.org/10.1016/j.applthermaleng.2005.11.023 

Investigation of turbulence characteristics of burning process of the solid fuel in BKZ 420 combustion chamber / Askarova A. S., Bekmukhamet A., Bolegenova S. A., Beketayeva M. T., Maximov Yu. V. Ospanova Sh. S., Gabitova Z. K. // WSEAS Transactions on Heat and Mass Transfer. 2014. Vol. 9. Р. 39–50.

Yarkova V. S., Matyuhin V. I. Vybor sposoba utilizacii tepla podtelezhechnogo prostranstva tunnel'noy pechi // Teplotekhnika i informatika v obrazovanii, nauke i proizvodstve (TIM'2016). Ekaterinburg, 2016. P. 134–137.

Szego G., Dally B., Nathan G. Operational characteristics of a parallel jet MILD combustion burner system // Combustion and Flame. 2009. Vol. 156, Issue 2. P. 429–438. doi: https://doi.org/10.1016/j.combustflame.2008.08.009 

Parente A., Galletti C., Tognotti L. Effect of the combustion model and kinetic mechanism on the MILD combustion in an industrial burner fed with hydrogen enriched fuels // International Journal of Hydrogen Energy. 2008. Vol. 33, Issue 24. P. 7553–7564. doi: https://doi.org/10.1016/j.ijhydene.2008.09.058 

Effect of inlet and outlet configurations on blow-off and flashback with premixed combustion for methane and a high hydrogen content fuel in a generic swirl burner / Syred N., Giles A., Lewis J., Abdulsada M., Valera Medina A., Marsh R. et. al. // Applied Energy. 2014. Vol. 116. P. 288–296. doi: https://doi.org/10.1016/j.apenergy.2013.11.071 

Numerical Research of Aerodynamic Characteristics of Combustion Chamber BKZ-75 Mining Thermal Power Station / Askarova A. S., Bolegenova S. A., Maksimov V. Y., Bekmuhamet A., Ospanova S. S. // Procedia Engineering. 2012. Vol. 42. P. 1250–1259. doi: https://doi.org/10.1016/j.proeng.2012.07.517 

Bulat G., Jones W. P., Marquis A. J. Large Eddy Simulation of an industrial gas-turbine combustion chamber using the sub-grid PDF method // Proceedings of the Combustion Institute. 2013. Vol. 34, Issue 2. P. 3155–3164. doi: https://doi.org/10.1016/j.proci.2012.07.031 

Oleynik O. Yu., Taranenko Yu. K. Vibrosterzhnevye chastotnye preobrazovateli temperatury // Vymiriuvalna ta obchysliuvalna tekhnika v tekhnolohichnykh protsesakh. 2017. Issue 3. P. 58–64.

Examining the Kalman Filter in the field of noise and interference with the non-Gaussian distribution / Oliynyk O., Taranenko Y., Losikhin D., Shvachka A. // Eastern-European Journal of Enterprise Technologies. 2018. Vol. 4, Issue 4 (94). P. 36–42. doi: https://doi.org/10.15587/1729-4061.2018.140649







Copyright (c) 2018 Olga Oliynyk, Valeriy Nikolsky, Oleksandr Alieksandrov, T. R., Viacheslav Kosarev

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ISSN (print) 1729-3774, ISSN (on-line) 1729-4061