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Proceedings of the Ironmaking, Iron Ore and Agglomeration Seminars

ISSN 2594-357X

42º Seminário de Redução de Minério de Ferro e Matérias-primas / 13º Seminário Brasileiro de Minério de Ferro / 6th International Congress on the Science and Technology of Ironmaking — vol. 6, num.6 (2012)

Title

COMPUTATIONAL MODELING OF PRIMARY GAS CLEANING SYSTEM FOR BLAST FURNACE

COMPUTATIONAL MODELING OF PRIMARY GAS CLEANING SYSTEM FOR BLAST FURNACE

Authorship

Oliveira, Waleska Effgen de; Reis, Leonardo Camilo dos; Fernandes., Mauro Vivaldino

Oliveira, Waleska Effgen de
Oliveira, Waleska Effgen de

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Reis, Leonardo Camilo dos
Reis, Leonardo Camilo dos

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Fernandes., Mauro Vivaldino
Fernandes., Mauro Vivaldino

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DOI

10.5151/2594-357X-22125

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Abstract

The blast furnace top gas contains high amount of dust, requiring pretreatment prior to use. The primary gas cleaning is usually performed in the gravity dust catcher, which has efficiency of 50 % to 60 %, generating dust as a byproduct of the blast furnace. Cyclones, according to the literature, are more efficient equipment to remove particulates than dust catcher. In this context, fluid dynamics models were developed through ANSYS-CFX® to simulate the gas and solid flows in dust catcher and cyclone, mainly evaluating the overall separation efficiency of these equipment. The results indicated that cyclones are more efficient than the gravity dust catcher. It is possible to obtain separation efficiency around 85 %, resulting in less generation of blast furnace sludge.

 

The blast furnace top gas contains high amount of dust, requiring pretreatment prior to use. The primary gas cleaning is usually performed in the gravity dust catcher, which has efficiency of 50 % to 60 %, generating dust as a byproduct of the blast furnace. Cyclones, according to the literature, are more efficient equipment to remove particulates than dust catcher. In this context, fluid dynamics models were developed through ANSYS-CFX® to simulate the gas and solid flows in dust catcher and cyclone, mainly evaluating the overall separation efficiency of these equipment. The results indicated that cyclones are more efficient than the gravity dust catcher. It is possible to obtain separation efficiency around 85 %, resulting in less generation of blast furnace sludge.

Keywords

Blast furnace; Cyclone; Dust; Fluid dynamics modeling.

Blast furnace; Cyclone; Dust; Fluid dynamics modeling.

How to refer

Oliveira, Waleska Effgen de; Reis, Leonardo Camilo dos; Fernandes., Mauro Vivaldino. COMPUTATIONAL MODELING OF PRIMARY GAS CLEANING SYSTEM FOR BLAST FURNACE , p. 502-512. In: 42º Seminário de Redução de Minério de Ferro e Matérias-primas / 13º Seminário Brasileiro de Minério de Ferro / 6th International Congress on the Science and Technology of Ironmaking, Rio de Jabeiro, 2012.
ISSN: 2594-357X , DOI 10.5151/2594-357X-22125