ORIGINAL PAPER
Reducing emissions from hot blast stoves by configuring an automated control system
1
Department of Automation, Electrical and Robotic Systems, Technical University “Metinvest Polytechnic” LLC, Ukraine
2
Department of Power Energy, Dnipro University of Technology, Ukraine
3
Faculty of Management, AGH University of Krakow, Poland
4
Management and Administration Departmnent, Ivano-Frankivsk National Technical University of Oil and Gas, Ivano-Frankivsk, Ukraine, Ukraine
5
Management Department, AGH University of Krakow, Poland
Submission date: 2025-04-23
Final revision date: 2025-06-11
Acceptance date: 2025-06-12
Publication date: 2025-09-30
Corresponding author
Alla Polyanska
Management and Administration Departmnent, Ivano-Frankivsk National Technical University of Oil and Gas, Ivano-Frankivsk, Ukraine, Ukraine
Management and Administration Departmnent, Ivano-Frankivsk National Technical University of Oil and Gas, Ivano-Frankivsk, Ukraine, Ukraine
Polityka Energetyczna – Energy Policy Journal 2025;28(3):195-216
KEYWORDS
hot blast stove (HBS)emission reductionautomated control systemcombustion efficiencyblast furnace gas
TOPICS
ABSTRACT
This research focuses on reducing harmful emissions during hot blast stove (HBS) operation by enhancing the automated control system for checkerwork heating. The primary sources of emissions, including nitrogen oxides (NOx), sulfur oxides (SOx), and carbon oxides (CO, CO2), generated during the combustion of blast furnace gas, are analyzed. The authors propose improving the automated control system by implementing feedback on fuel combustion quality, continuous monitoring of exhaust gas composition, and real-time assessment of the fuel’s calorific value. The system’s structure includes regulating combustion airflow, continuous monitoring of blast furnace gas calorific value, evaluating combustion efficiency through O2, CO, and CO2 content analysis in exhaust gases, and adjusting the combustion process according to the mode map, maintaining the dome temperature within 1,350–1,420°C to minimize NOx formation. These measures contribute to reducing NOx emissions, enhancing energy efficiency, and stabilizing the temperature regime. The proposed solutions offer a cost-effective approach to emission reduction and can be seamlessly integrated into existing metallurgical enterprise systems.
CONFLICT OF INTEREST
The Authors have no conflicts of interest to declare.
METADATA IN OTHER LANGUAGES:
Polish
Redukcja emisji z pieców nagrzewających powietrze poprzez konfigurację zautomatyzowanego systemu sterowania
piec nagrzewający powietrze (HBS), redukcja emisji, zautomatyzowany system sterowania, sprawność spalania, gaz wielkopiecowy
Przedmiotem niniejszych badań jest ograniczenie emisji szkodliwych substancji podczas eksploatacji pieców nagrzewających powietrze (HBS) poprzez udoskonalenie zautomatyzowanego systemu sterowania procesem nagrzewania konstrukcji rusztowej. Przeanalizowano główne źródła emisji powstające podczas spalania gazu wielkopiecowego, w tym tlenki azotu (NOx), tlenki siarki (SOx) oraz tlenki węgla (CO, CO2). Autorzy proponują modernizację systemu automatycznego sterowania poprzez wdrożenie sprzężenia zwrotnego dotyczącego jakości spalania paliwa, ciągły monitoring składu gazów spalinowych oraz bieżącą ocenę wartości opałowej paliwa. Struktura systemu obejmuje regulację przepływu powietrza do spalania, ciągły pomiar wartości opałowej gazu wielkopiecowego, ocenę sprawności spalania na podstawie analizy zawartości O2, CO i CO2 w spalinach oraz dostosowanie procesu spalania do mapy trybów pracy w celu utrzymania temperatury kopuły w zakresie 1350–1420°C, co sprzyja minimalizacji emisji NOx. Zastosowane rozwiązania przyczyniają się do redukcji emisji NOx, poprawy efektywności energetycznej oraz stabilizacji reżimu temperaturowego. Proponowane podejście stanowi opłacalną metodę ograniczania emisji i może zostać bezproblemowo zintegrowane z istniejącymi systemami przedsiębiorstw hutniczych.
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