A better understanding of the behaviour of pulverised coal particles and lance tip design - ArcelorMittal - Wizbii

A better understanding of the behaviour of pulverised coal particles and lance tip design

2016-11-01T17:09:01+0100

Description de l'offre

Country:

FRANCE

Region:

LORRAINE

Sector:

ArcelorMittal Europe - Flat Carbon

Unit:

Site:

R & D Process Maizières les Metz

Field of activity:

Research and Development / Metallurgy Innovation

Title of internship:

A better understanding of the behaviour of pulverised coal particles and lance tip design

Subject of the internship:

Study and simulate the transport of coal particles in blast furnace lances and better understand the effect of lance tip design on particle dispersion and combustion.

Increasing Pulverized Coal Injection (PCI) in blast furnace operations is an important research subject for the steel industry due to its effect on increasing productivity, lowering operating costs, extending coke oven life and decreasing greenhouse emissions. In usual operations, coal particles are transported with gaseous nitrogen and are injected inside the tuyere with a lance. The particles are then heated due to the contact with hot air, and combustion occurs with a release of volatile matter.
A CFD model based on a lagrangian approach coupled with combustion and heat transfer is currently being used at ArcerlorMittal to predict the combustibility of the coal particles in the raceway of a blast-furnace and to optimise injection conditions. However, the behaviour of these particles inside the injection lance is still not very well understood and the effect of the lance tip design on particle dispersion and combustion still needs to be investigated. The purpose of this training is to analyse and develop a CFD submodel capable of predicting the transport of particles inside the lance and their dispersion once they exit into the tuyere.
A literature survey on multiphase modelling of particle transport in pipes will first be realised. The CFD model will then be developed and experimental measurements will be used to validate the modelling approach. Finally, the injection in industrial conditions will be simulated. Lance tip design will be optimised in order to enhance the dispersion and combustion of the coal particles.

Profil recherché

Applicant Profile:

Fluid mechanics background with preliminary competencies in multiphase flows
Good communication and analytical skills
Knowledge of the Ansys Fluent package is a plus.

Education:

Chemical Engineering, Fluid Mechanics

Level of education:

MASTER (Bac+4/5)

Duration of the internship:

6 months

Period of the internship:

February or March 2017 (flexible)

Managers of the internship:

Ghassan GHAZAL
Tel:
Email: ************@*******.**

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À propos de ArcelorMittal

ArcelorMittal est le numéro un mondial de l’exploitation sidérurgique et minière, avec une présence dans 60 pays et une empreinte industrielle dans 19 pays. Guidés par une philosophie visant à produire un acier sûr et durable, nous sommes le principal fournisseur d’acier de qualité des grands marchés sidérurgiques mondiaux, y compris l'automobile, la construction, l'électroménager et l'emballage, soutenus par un département de recherche et développement d’envergure mondiale et d’excellents réseaux de distribution.

En France, ArcelorMittal a une capacité de production annuelle de plus de 10 millions de tonnes avec 40 sites de production et plus de 17 000 salariés. La France est également source d'innovations pour le Groupe avec 4 centres de Recherche et Développement et plus de 700 chercheurs parmi les 1 300 que compte ArcelorMittal.

223 jobs disponibles chez ArcelorMittal

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