Optimisation study of ironmaking using biomass

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: H. Helle, M. Helle, F. Pettersson, H. Saxén
Publisher: MANEY PUBLISHING
Publication year: 2010
Journal: Ironmaking and Steelmaking
Journal acronym: IRONMAK STEELMAK
Volume number: 37
Issue number: 8
Start page: 590
End page: 598
Number of pages: 9
ISSN: 0301-9233
eISSN: 1743-2812


Abstract

The economic advantage of using biomass as partial substitute for fossil reductants in the blast furnace (BF) process was studied by simulation. A thermodynamic model of the BF was used in combination with simple models of the coke plant, sinter plant, hot stoves, basic oxygen furnace and power plant. Pretreatment of the biomass before its injection in the BF is considered in a pyrolysis unit where the carbon content and heating value are raised and the oxygen content is lowered, which is beneficial for the BF. The system was optimised with respect to the price of raw steel, considering costs of raw materials, energy and CO(2) emissions of the unit processes. The study demonstrates that biomass in partially pyrolysed form is a potential auxiliary reductant and that the optimal states of operation within certain regions depend strongly on the price structure of the raw materials and emissions.


Keywords

Biomass injection, CO(2) emissions, Iron- and steelmaking, Optimisation

Last updated on 2019-26-06 at 06:58