ISSN 2594-357X
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Abstract
The injection of reduction agents via the tuyeres is now common practice world–wide in blast furnace operation. The benefits of reduced coke consumption and increased production due to the removal of nitrogen from the blast with increasing oxygen enrichment have been recognized by the industry. In choosing an injection system, the user faces a choice of designs with fundamental differences, the most important of which is the type of flow control. Among the most common systems in the industry, some feature active flow control e.g. through the application of throttling valves, whereas flow control in the Danieli Corus system is based on physical principles such as uniform pressure drop across injection lines. For an optimized blast furnace process, production rates in front of the individual tuyeres should be balanced, and the production in front of a tuyere depends on the local coal to gas ratio. This article discusses how various designs perform in this respect.
The injection of reduction agents via the tuyeres is now common practice world–wide in blast furnace operation. The benefits of reduced coke consumption and increased production due to the removal of nitrogen from the blast with increasing oxygen enrichment have been recognized by the industry. In choosing an injection system, the user faces a choice of designs with fundamental differences, the most important of which is the type of flow control. Among the most common systems in the industry, some feature active flow control e.g. through the application of throttling valves, whereas flow control in the Danieli Corus system is based on physical principles such as uniform pressure drop across injection lines. For an optimized blast furnace process, production rates in front of the individual tuyeres should be balanced, and the production in front of a tuyere depends on the local coal to gas ratio. This article discusses how various designs perform in this respect.
Keywords
Blast furnace; Producitivity; Coal injection.
Blast furnace; Producitivity; Coal injection.
How to refer
Paramanathan, Bala K.;
Engel., Edo.
PULVERIZED COAL INJECTION
OPTIMIZING THE BLAST FURNACE PROCESS
,
p. 2486-2494.
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-22562
