Development of a mathematical model to monitoring the velocity of subsidence of charge material column in the blast furnace based on the parameters of gas pressure in the furnace tract

Authors

DOI:

https://doi.org/10.15587/1729-4061.2022.246175

Keywords:

blast furnace, blast path, mathematical model, adequate estimate, experimental data

Abstract

A problem of estimating the velocity of subsidence of a column of charge materials using non-contact methods was considered. This is important because the level of furnace charge materials and the velocity of their subsidence are main indicators of melting intensity determining the furnace productivity.

The design of a blast furnace and its blast path were described and existing methods and means of controlling the velocity of charge materials in the blast furnace were analyzed. A mathematical model was presented for estimating the velocity of subsidence of charge materials in a blast furnace based on the magnitude and fluctuations of gas pressure along the furnace shaft height. The model is based on the fact that the furnace gases rise up in the furnace shaft through elementary channels in the column of charge materials consisting of a combination of capacitances and resistances. Volume of capacities and values of resistance of elementary channels are constantly changing. This changes hydraulic resistance to gas movement in the blast furnace. The system of differential equations describes the dependence of the amplitude of pressure fluctuations on the amplitude of change in coefficients of resistance and frequency of pressure fluctuations on the frequency of change in coefficients of resistance. The experimental data on velocity of the column of charge materials and fluctuations in the pressure differential in the furnace were processed and their significant relationship was shown to confirm the previous theoretical study results. To assess the model adequacy, the simulation method was used. The results of the simulation model work were confirmed by experimental data.

The developed mathematical model can be introduced into production. This will make it more economical and safer through better and more predictable control and improved flexibility in operation under different production conditions.

Author Biographies

Victor Kravchenko, Pryazovskyi State Technical University

PhD, Associate Professor

Department of Automation and Computer Technology

Zlata Vorotnikova, Pryazovskyi State Technical University

PhD, Associate Professor

Department of Automation and Computer Technology

Aleksandr Simkin, Technical University “Metinvest Polytechnic” LLC

PhD, Professor

Department of Organization and Automation of Production

Oleksiy Koyfman, Technical University “Metinvest Polytechnic” LLC

PhD, Associate Professor

Department of Organization and Automation of Production

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Published

2022-02-25

How to Cite

Kravchenko, V., Vorotnikova, Z., Simkin, A. ., & Koyfman, O. (2022). Development of a mathematical model to monitoring the velocity of subsidence of charge material column in the blast furnace based on the parameters of gas pressure in the furnace tract. Eastern-European Journal of Enterprise Technologies, 1(2(115), 116–126. https://doi.org/10.15587/1729-4061.2022.246175

Issue

Vol. 1 No. 2(115) (2022): Information technology. Industry control systems

Section

Industry control systems

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Copyright (c) 2022 Oleksiy Koyfman, Aleksandr Simkin, Victor Kravchenko, Zlata Vorotnikova

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