Genetic Algorithm-Based Multicriteria Optimization of Ironmaking in the Blast Furnace

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Pettersson F, Saxen H, Deb K
Förläggare: TAYLOR & FRANCIS INC
Publiceringsår: 2009
Tidskrift: Materials and Manufacturing Processes
Tidskriftsakronym: MATER MANUF PROCESS
Volym: 24
Nummer: 3
Artikelns första sida, sidnummer: 343
Artikelns sista sida, sidnummer: 349
Antal sidor: 7
ISSN: 1042-6914


Abstrakt

A method has been developed for optimizing ironmaking in the blast furnace with the aim to minimize costs and CO2 emissions. These two goals are pursued by a genetic algorithm yielding states of operation on a Pareto-optimal front with nondominated solutions. The blast furnace process is described mathematically by a thermodynamic simulation model, where realistic operational constraints are imposed. The states on the Pareto-optimal fronts evolved are analyzed in more detail, considering the constraints of the process. The solutions are found to give rise to clearly different specific emissions but very similar specific costs as long as the production stays within the limits of the granted CO2 emissions allowances of the plant. However, this also implies that the costs of ironmaking may rise considerably along with increased prices of the allowances or reduced emission rights. The findings of the work are expected to be valuable in the strategic evaluation of future ironmaking options.


Nyckelord

CO2 emission, Cost minimization, Genetic algorithms, Ironmaking, Multicriterion optimization, Pareto-optimal solutions

Senast uppdaterad 2020-26-01 vid 04:55