2014-Sustainable Industrial Processing Summit
SIPS 2014 Volume 3: Non-ferrous & Iron_Steel
| Editors: | Kongoli F |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2014 |
| Pages: | 522 pages |
| ISBN: | 978-1-987820-05-8 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Modeling the shaft reduction process for DRI production combined with gasification o biomass
Jose Adilson de Castro1;1UFF - FEDERAL FLUMINENSE UNIVERSITY, Volta Redonda, Brazil;
Type of Paper: Regular
Id Paper: 76
Topic: 4
Abstract:
The route based on the EAF process for ironmaking production has advantages regarding the flexibility for using raw materials such as scrap, solid and liquid pig iron and DRI. The production of DRI, however, has been competitive only when the natural gas is available at a low price.
An alternative to the traditional production of DRI in MIDREX type reactor is to use biomass produced gas with some improvements on the MIDREX process by using controlled oxygen to promote in situ reformation of the blast gas.
This paper deals with the numerical simulation of the shaft type reactor (MIDREX) using the multiphase multicomponent approach. The model is based on the numerical solution of the fluid flow, energy and chemical species described by conservation equations. It is possible to analyze the effect of the blast gas composition and temperature on the production of DRI by using such model.
Simulation results indicated that an efficient process operation can be obtained by using gas compatible with gasification technology based on biomass in the fluidized bed reactor. The result pointed out that a small amount of oxygen into the bustle gas (3% O2 and 4% CH4) can considerably improve the energy of the shaft reactor and its efficiency.