2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 1: D'Abreu Intl. Symp. / Iron and Steel Making
| Editors: | Kongoli F, Noldin JH, Takano C, Lins F, Gomez Marroquin MC, Contrucci M |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2016 |
| Pages: | 320 pages |
| ISBN: | 978-1-987820-37-9 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
CD shopping page
Minimum Carbon Consumption Diagram. Application to the Blast Furnace Ironmaking Process
Jose D’Abreu1;1PUC-RIO UNIVERSITY, Rio de Janeiro, Brazil;
Type of Paper: Regular
Id Paper: 494
Topic: 2
Abstract:
The Brazilian steel industry uses blast furnace - BF as the main technology to produce hot metal. Currently, the blast furnace continues being the best option among the several ironmaking technologies, due to its high production rate, optimized thermal performance, operational stability and safety, as well as great longevity of the equipment performance. However, various improvements are still being researched, such as the operational control of the reactor and the reduction of its energy consumption, both aiming to prevent failures, to reduce its energy consumption and keep competitive the productivity in an international market point of view.
This work presents a model with the objective to generate a surface of minimum consumption for the major reductant (carbon) used in BF. In developing the model the equilibrium conditions, the mass and energy balances and the equations of the major operational parameters, were fully considered. Its application to the blast furnaces is exemplified for real operational conditions, using databases extracted from industrial reports of an integrated steelworks . It was also possible to obtain, from cutting plans on these surfaces, binary diagrams, of RC-DR type (Reductant Consumption-Direct Reduction), able to be generated on-line with the process. Among the results obtained from the real case studies, one was of particular interest, since it confirmed and predicted important thermodynamic unfeasibility of the furnace, called “furnace frozen”, which, additionally also provide greater operational safety to the process. The results obtained applying this model to regular and abnormal blast furnace operational condition, also led to conclude that the main objectives were fully succeeded.