Optimization of the operation of hot stoves

A4 Konferenspublikationer


Interna författare/redaktörer


Publikationens författare: Mikko Helle, Henrik Saxén
Redaktörer: n/a
Förlagsort: Québec
Publiceringsår: 2015
Förläggare: Canadian Institute of Mining, Metallurgy and Petroleum
Moderpublikationens namn: 54th Annual Conference of Metallurgists hosting America's Conference on Aluminum Alloys
Artikelns första sida, sidnummer: 1
Artikelns sista sida, sidnummer: 10
eISBN: 978-1-926872-32-2


Abstrakt

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.

Senast uppdaterad 2019-16-07 vid 05:22