Optimization of the operation of hot stoves

A4 Conference proceedings


Internal Authors/Editors


Publication Details

List of Authors: Mikko Helle, Henrik Saxén
Editors: n/a
Place: Québec
Publication year: 2015
Publisher: Canadian Institute of Mining, Metallurgy and Petroleum
Book title: 54th Annual Conference of Metallurgists hosting America's Conference on Aluminum Alloys
Start page: 1
End page: 10
eISBN: 978-1-926872-32-2


Abstract

The operation of hot stoves used for preheating the blast in the ironmaking blast furnace has a strong effect on the consumption of reductants, economic performance of and CO2 emissions from the steelmaking site. Generally, it is recommended to maintain as high blast temperature as possible, because this minimizes the rate of reductants in the blast furnace. The blast temperature is affected in a complex way by the time periods of heating and cooling of the stoves, and by the amount of gas combusted in the stoves. Furthermore, as the hot stoves show degraded performance with age, it is a non-trivial task to select optimal operation parameters for the stoves. The paper addresses this computationally by applying a one-dimensional heat-transfer model of the hot stoves for optimization of the performance of the system. The complexity and strong coupling of the decision variables is demonstrated by numerical examples, where the blast temperature is maximized under different constraints.

Last updated on 2019-20-07 at 05:39