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Mathematical model of COREX melter gasifier: Part I. Steady-state model

Pal, Subrata and Lahiri, Ashok Kumar (2003) Mathematical model of COREX melter gasifier: Part I. Steady-state model. In: Metallurgical and Materials Transactions B, 34 (1). pp. 103-114.

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Abstract

The COREX melter gasifier is a countercurrent reactor to produce liquid iron. Directly reduced iron (DRI), noncoking coal, and other additives are charged to the melter gasifier at their respective temperatures, and O-2 is blown through the tuyeres. Functionally, a melter gasifier is divided into three zones: a moving bed, fluidized bed, and free board. A model has been developed for the moving bed, where the tuyere region is two-dimensional (2-D) and the rest is one-dimensional (1-D). It is based on multiphase conservation of mass, momentum, and heat. The fluidized bed has been treated as 1-D. Partial equilibrium is calculated for the free board. The calculated temperature of the hot metal, the top gas, and the chemistry of the top gas agree with the reported plant data. The model has been used to study the effects of bed height, injection of impure O-2, coal chemistry, and reactivity on the process performance.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to The Minerals, Metals & Materials Society.
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 26 Aug 2011 10:32
Last Modified: 26 Aug 2011 10:32
URI: http://eprints.iisc.ernet.in/id/eprint/40137

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