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- Title
ESTUDO NUMÉRICO DA RECICLAGEM DE CO<sub>2</sub> NA ZONA DE COMBUSTÃO DO ALTO FORNO.
- Authors
de Castro, Jose Adilson; de Souza Baltazar, Anderson William
- Abstract
The blast furnaces process produces gases with relative high calorific value, which is commonly used in the steel-making facilities. However, CO2 rich gas has not application and it is desirable to minimize its emission due to global warming effects. In this investigation, a total model of the blast furnace is used to analyze the injection of CO2 into the blast furnace tuyeres promoting water shift reaction and solution loss, which, in turn, generates reducing gas to the blast furnace process. The total blast furnace model is based on transport equations of momentum, energy and chemical species for solids, gas, hot metal, slag and pulverized phases. Four cases are selected with CO2 recycling and blast volume together with oxygen enrichment adjustment in order to keep smooth operation. For the cases of high CO2 injection burden distribution is changed aiming at promoting better gas flow conditions. Simulated results indicate that productivity could be increased around 15% due to the combined effect of higher consumption on PCI via solution loss and higher reducing gas generation on the lower part of the furnace.
- Subjects
BLAST furnace combustion; WASTE recycling; STEEL industry; CARBON dioxide; MOMENTUM (Mechanics); SIMULATION methods &; models; GLOBAL warming
- Publication
Tecnologia em Metalurgia, Materiais e Mineração, 2009, Vol 6, Issue 1, p13
- ISSN
2176-1515
- Publication type
Article
- DOI
10.4322/tmm.00601003