Aleksandr Yeromin, Oksana Yeromina, Ladislav Lukáč, Ján Kizek, Róbert Dzurňák
The possibility of increasing the efficiency of temperature distribution control in heating furnaces
Číslo: 2/2018
Periodikum: Acta Montanistica Slovaca
Klíčová slova: heating furnaces, temperature, combustion
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Anotace:
The concepts of creating the uniform temperature distribution in the reheating facilities equipped with high-effective regenerators
have been considered in the present work. Uniformity of the temperature in the working space of reheating furnaces favours the removal of
the local high-temperature three-dimensional zones in the furnace. This causes increasing the quality of metal heating, decreasing waste of
metal, harmful gas-like ejections (including nitrogen oxides) with flue gases and improving conditions of the lining exploitation of the
heating facilities.
High-temperature preheating of the combustion air predetermines the low consumption of the fuel in furnaces and the deep utilisation
of the heat of furnaces gases. It is proposed to bring off the maintenance of the uniform temperature distribution in reheating furnaces at the
expense of the new distributed three-dimensional practice of burning fuel.
Organisation of the new practice of fuel combustion is connected with special conditions of mixing fuel and air, recirculation and
reverse of the furnace gases. Three dimensional (volumetric) fuel combustion is ensured by the modern design of burners equipment at the
expense of the structural parameters of a burner and working space of the furnace, the arrangement of the fuel combustion facilities, duct
openings of flue gases and gas dynamic characteristics of the furnace gases. Solutions for ensuring volumetrically distributed fuel burning
for the main types of reheating facilities: several types of reheating pits, various types of batch and continuous reheating furnaces.
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have been considered in the present work. Uniformity of the temperature in the working space of reheating furnaces favours the removal of
the local high-temperature three-dimensional zones in the furnace. This causes increasing the quality of metal heating, decreasing waste of
metal, harmful gas-like ejections (including nitrogen oxides) with flue gases and improving conditions of the lining exploitation of the
heating facilities.
High-temperature preheating of the combustion air predetermines the low consumption of the fuel in furnaces and the deep utilisation
of the heat of furnaces gases. It is proposed to bring off the maintenance of the uniform temperature distribution in reheating furnaces at the
expense of the new distributed three-dimensional practice of burning fuel.
Organisation of the new practice of fuel combustion is connected with special conditions of mixing fuel and air, recirculation and
reverse of the furnace gases. Three dimensional (volumetric) fuel combustion is ensured by the modern design of burners equipment at the
expense of the structural parameters of a burner and working space of the furnace, the arrangement of the fuel combustion facilities, duct
openings of flue gases and gas dynamic characteristics of the furnace gases. Solutions for ensuring volumetrically distributed fuel burning
for the main types of reheating facilities: several types of reheating pits, various types of batch and continuous reheating furnaces.