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Курунов, И. Ф.; Kornev, V. K.; Loginov, V. N.; Rudin, V. S.

doi:10.1023/a:1021979931739

Cited by 2 publications

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“…At high injection rates of NG , that might occur also locally at some tuyères, a portion of the gas cannot be heated to the ignition point due to insufficient mixing with the blast. This portion undergoes pyrolysis and produces soot [71]. To suppress the soot generation and its subsequent deposition, good mixing of NG with the blast is needed and its oxidation by oxygen before NG can be decomposed to carbon and hydrogen.…”

Section: Characteristics Of Selected Ara and Conversion Behaviour In ...mentioning

confidence: 99%

Blast furnace injection for minimizing the coke rate and CO₂emissions

Babich

2021

Ironmaking & Steelmaking

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The tuyère injection is one of the key tools to exhaust the blast furnace potential and to minimize its CO 2 emissions. The review argues theoretical basis and operation strategies for ensuring the high efficiency of injection of auxiliary reducing agents (ARA). First, it provides the theoretical analysis of requirements that ensure minimum coke and carbon rates, and minimum CO 2 emissions. Then it focuses on the injection of selected ARA, such as pulverized coal, biomass products, and hydrogen containing gasesnatural gas, coke oven gas and pure H 2 . Conversion behaviour of mentioned ARA and measures for its intensifying are discussed critically. Next, compensating measures and their suitable level are discussed. The role of oxygen and ways for its introduction are discussed from different points of view. Operating windows and co-injection of solids and H 2 gases are discussed aiming at the best blast furnace performance. Finally, limiting factors for injection of ARA are summarized.

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Section: Characteristics Of Selected Ara and Conversion Behaviour In ...mentioning

confidence: 99%