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Архив
Proceedings of the 24th National and 2nd International ISHMT-ASTFE Heat and Mass Transfer Conference (IHMTC-2017)


ISBN Онлайн: 978-1-56700-478-6

EFFECT OF COAL FLOW RATE AND BURNER LOCATION IN A PUSHER TYPE REHEATING FURNACE

DOI: 10.1615/IHMTC-2017.1590
pages 1137-1144

Saurav Chakraborty
Department of Mechanical Engineering, IIT Delhi

Sajal Randhar
Department of Mechanical Engineering, IIT Delhi

Abhimanyu Baruah
Department of Mechanical Engineering, IIT Delhi

Prabal Talukdar
Department of Mechanical Engineering Indian Institute of Technology, Delhi

Аннотация

Energy conservation in steel industries is a big issue in sustaining a green environment. Reheating furnaces consume a huge amount of non-renewable sources of energy to heat up the billets above recrystallization temperature. Optimal energy utilisation to achieve desired thermal quality of billets inevitably needs the help of mathematical formulation and computational modelling. In view of this desired goal, a pusher type reheating furnace with axial burners injecting air-coal mixture, is simulated with the help of a computationally efficient numerical model. The effect of varying coal flow rate on the thermal efficiency and productivity are studied along with physical reasoning. An optimal value of 38.1 cm is identified for the spacing between the burners which maximises thermal efficiency and furnace productivity. Also, the effect of installing additional burners in the heating zone is assessed for the furnace under consideration.