CFD Numerical Simulation of Operation Optimization for Energy Saving during Combustion Period of Kalugin Top Combustion Hot Blast Stove

• Published in: Transactions of the Indian Institute of Metals Vol. 76; no. 7; pp. 1967 - 1976
• Main Authors: Zhao, Ming, Pan, Yuhua, Meng, Fanxu, Ma, Ping, Jia, Lidi, Ma, Guangyu, Meng, Fanshuang, Li, Dongsheng
• Format: Journal Article
• Language: English
• Published: New Delhi Springer India 01.07.2023; Springer Nature B.V
• Subjects: Air temperature; Chemistry and Materials Science; Combustion chambers; Consumption; Corrosion and Coatings; Flue gas; Hot blast; Materials Science; Mathematical models; Metallic Materials; Optimization; Original Article; Regenerators; Steady state models; Three dimensional models; Tribology; CFD numerical simulation; Combustion; Operation optimization; Kalugin top combustion hot blast stove; Heat transfer
• ISSN: 0972-2815; 0975-1645
• DOI: 10.1007/s12666-023-02903-7

A three-dimensional steady-state CFD model of an industrial Kalugin hot stove was established and used to predict flow, temperature and concentration fields in dome combustion chamber of the hot stove during combustion period. According to the model predicted variation in temperature of the flue gas entering the regenerator with the operation parameters, appropriate operation conditions were obtained in terms of air consumption coefficient in the range of 1.0–1.3 for a constant combustion air flowrate of 65,000 Nm 3 /h, which can maintain the temperature of the flue gas entering the regenerator at 1297–1327℃. According to the statistics on measured data from ten consecutive combustion cycles of the industrial Kalugin hot stove, when the air consumption coefficient was increased from 0.79 to 1.27, on average the hot air temperature was increased by 32℃ while the cumulative fuel gas consumption was decreased by 14%.