CFD modeling of multiphase reacting flow in blast furnace shaft with layered burden

Journal Article · Thu Feb 13 00:00:00 EST 2014 · Applied Thermal Engineering

DOI:https://doi.org/10.1016/j.applthermaleng.2014.01.065· OSTI ID:1344406

Fu, Dong ^[1]; Chen, Yan ^[1]; Zhao, Yongfu ^[2]; D'Alessio, John ^[3]; Ferron, Kyle J. ^[3]; Zhou, Chenn Q. ^[1]

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1. Purdue Univ. Calumet, Hammond, IN (United States). Center for Innovation through Visualization and Simulation
2. United States Steel Corporation, Munhall, PA (United States)
3. U.S. Steel Canada, Hamilton Works, ON (Canada)

The ironmaking blast furnace is a counter-current chemical reactor which includes the ascending gas flow and the counter-current descending porous bed (burden). A Computational Fluid Dynamics (CFD) model has been developed to simulate the multiphase reacting flow in blast furnace shaft. The gas flow dynamics, burden movement, chemical reactions, heat and mass transfer between the gas phase and burden phase are included in the CFD model. The blast furnace burden consists of alternative layers of iron ore and coke. We propose a novel methodology in order to efficiently model the effects of alternative burden layer structure on gas flow, heat transfer, mass transfer and chemical reactions. Different reactions and heat transfer characteristics are applied for difference types of layer. In addition, the layered CFD model accurately predicts the Cohesive Zone (CZ) shape where the melting of solid burden taking place. Furthermore, we determine the shape and location of the CZ by an iterative method based on the ore temperature distribution. The theoretical formation and the methodology of the CFD model are presented and the model is applied to simulate industry blast furnaces. Finally, the proposed method can be applied to investigate the blast furnace shaft process and other moving bed system with periodic burden structure configuration.

• Research Organization: Purdue Univ. Calumet, Hammond, IN (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: NA0000741
• OSTI ID: 1344406
• Journal Information: Applied Thermal Engineering, Vol. 66, Issue 1-2; ISSN 1359-4311
• Publisher: Elsevier
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
Blast furnace
Shaft
Layered structure
Burden
CFD