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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
COMPARATIVE ANALYSIS OF BLAST FURNACE COOLER SYSTEM PERFORMANCE WITH DIFFERENT PRESERVATION TECHNIQUES AND DESIGN CONDITIONS
Submission Author:
Eustaquio Vieira , RJ
Co-Authors:
Eustaquio Vieira, Norberto Mangiavacchi, José da Rocha Miranda Pontes
Presenter: Eustaquio Vieira
doi://10.26678/ABCM.ENCIT2020.CIT20-0796
Abstract
Blast Furnace 2 of Ternium Brasil stellmaking company, in Rio de Janeiro, started to operate in December 16th, 2010. During its service life, cast iron stave coolers displacement and deformation in copper stave coolers occurred, generating the loss of refrigeration capacity of these cooling system components. After the analysis was executed, several actions to recover and to preserve the Blast Furnace 2 were performed. This paper presents the evaluation of techniques used to maintain the stability of the equipment shell, emphasizing the aspects of fluid dynamics in maintenance techniques and the thermal consequences of these actions. To analyze the fluid behavior and the outcomes in the stave coolers structure, a Finite Element computational fluid dynamics (CFD) model based on Ansys Fluent was employed, together with operational data from the company, that permitted to estimate with good consistency and accuracy the flow characteristics. The main results of this research are the best procedures to stabilize the cooler system in good conditions without causing damages in the Blast Furnaces shell, and improvements in actual maintenance techniques to preserve the equipment and extend its service life.
Keywords
Stave Cooler, Blast furnace, fluid dynamics, Computational fluid dynamics (CFD)
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