DOI: 10.52150/2522-9117-2024-38-16-25
Gres Leonid Petrovych, D. Sc. (Tech.), Professor, Ukrainian State University of Science and Technologies, Lazariana St., 2, Ukraine, Dnipro, 49010. ORCID: 0000-0002-5343-3438. E-mail: leonid.gres@gmail.com
Gupalo Olena Viacheslavivna, Ph. D. (Tech.), Associate Professor, Ukrainian State University of Science and Technologies, Lazariana St., 2, Dnipro, 49010, Ukraine. ORCID: 0000-0003-3145-9220. E-mail: gupaloelena@gmail.com
Vereshchak Viktor Ivanovych, Director, Research and production company “KOSH” LLC, Ivana Mazepy Ave., 31/11, Dnipro, Ukraine
Yeromin Oleksandr Olehovych, Dr. Sc. (Tech.), Professor, Ukrainian State University of Science and Technologies, Lazariana St., 2, Ukraine, Dnipro, 49010. ORCID: 0000-0001-8306-578X. E-mail: aoeremin@gmail.com
Radchenko Yurii Mykolaiovych, Ph. D. (Tech.), Associate Professor, Ukrainian State University of Science and Technologies, Lazariana St., 2, Dnipro, 49010, Ukraine. ORCID: 0000-0002-5055-6707. E-mail: y.n.radchenko@gmail.com
Vereshchak Denys Viktorovych, Director, Research and production company “KOSH” LLC, Ivana Mazepy Ave., 31/11, Dnipro, Ukraine
INCREASING THE HEATING TEMPERATURE OF BLAST-FURNACE AIR BY IMPROVING THE SYSTEM OF HEAT RECOVERY OF FLUE GASES OF HOT-BLAST STOVES
Abstract. Hot-blast stoves heated by blast furnace gas are used to heat blast furnace air. Increasing the combustion temperature of blast furnace gas by raising the temperature of combustion components before hot-blast stoves allows an increase in the heating temperature of blast-furnace air. However, the relatively low temperature of the exhaust flue gases of hot-blast stoves limits the possibility of increasing the heating temperature of combustion components. The research aims to overcome this limitation by equipping the heat recovery system of flue gases with a heat generator heated by blast furnace gas. The flue gases of the heat generator mix up with the flue gases of hot-blast stoves and their temperature increases. The flue gas mixture is then fed to heat exchangers to heat blast furnace gas and air before they burn in the hot-blast stoves. The technical solutions developed by the authors make it possible to increase the heating temperature of combustion components by 140 °C, reach a temperature of blast-furnace air up to 1210-1220 °C and provide coke savings up to 3.1- 4.2 %.
Key words: hot-blast stoves, flue gases, heat recovery, blast-furnace air, coke saving.
DOI: https://doi.org/10.52150/2522-9117-2024-38-16-25
For citation: Gres, L. P., Gupalo, O. V., Vereshchak, V. I., Yeromin, O. O., Radchenko, Yu. M., & Vereshchak, D. V. (2024). Increasing the heating temperature of blast-furnace air by improving the system of heat recovery of flue gases of hot-blast stoves. Fundamental and applied problems of ferrous metallurgy, 38, 16-25. https://doi.org/10.52150/2522-9117-2024-38-16-25.
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