Development of an oxygen-enhanced combustor for scrap preheating in an electric arc furnace

Oh, Jeongseog; Lee, Eungyeong; Noh, Dong-Soon

doi:10.1016/j.applthermaleng.2015.08.088

Cited by 10 publications

(4 citation statements)

References 14 publications

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“…As per research conducted by Oh, Lee, and Noh [8], one energy-efficient way of carrying out CO preheating is the air-used combustion method. In recent years, oxygenenhanced or oxygen-enriched combustion (OEC) is being used to increase thermal efficiency.…”

Section: Charge Preheatingmentioning

confidence: 99%

“…Hence, the jet-box process increases the process dynamism significantly, leading to a decrement in the energy requirements for the process of lancing (Figs. 7,8,9,10,11,12,13,14). https://doi.org/10.1007/s42452-021-04852-6…”

Section: Oxygen Lancing and Process Dynamicsmentioning

confidence: 99%

“…Fig 12. Comparison of the temperature increase curves between CH4-air combustion and oxygen-enhanced combustion[8] …”

mentioning

confidence: 99%

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Methods to optimize energy consumption in Conarc furnaces

Wanjari

2021

SN Appl. Sci.

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Over the past few decades, steelmaking has reached its zenith in terms of annual productivity, and relevant processes have been developed over time to produce steel with maximum efficiency in a shorter time. One of the prominent steelmaking practices used extensively in contemporary industries is the Conarc Steelmaking Practice, which involves the use of electrical and chemical Energy to carry out melting and decarburization in respective shells. This article reviews the factors that affect the energy consumption in Conarc furnaces and provides insight into the technologies developed to alleviate energy consumption and make the steelmaking process optimal in terms of energy consumption and requirement. This article also accentuates relevant systems and melting practices for the raw materials, which can be utilized in the Conarc Steelmaking practice to make the entire process less energy-intensive. Oxygen-enhanced combustion and thermophotovoltaic systems can alleviate energy consumption substantially while maintaining steel quality at the same time, as discussed in the paper. Additionally, some mathematical models have been discussed that facilitate in formulating an energy optimal and financial steelmaking process.

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Section: Charge Preheatingmentioning

confidence: 99%

Section: Oxygen Lancing and Process Dynamicsmentioning

confidence: 99%

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Methods to optimize energy consumption in Conarc furnaces

Wanjari

2021

SN Appl. Sci.

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“…Direct Reduction (DR) / Electric Arc Furnace (EAF) is a relatively environment friendly route in iron and steel making chain due to its less carbon contaminants emissions as carbon dioxides and soot [1], owing to the fact that coke making plant have been omitted. The EAF's are widespread in steel production by melting scrap, Direct Reduced Iron (DRI) and pig iron and also it can be utilized in adjusting the chemical composition of the melt bath by heightening carbon and oxygen level [2].…”

Section: Introductionmentioning

confidence: 99%

A fuzzy approach to selecting the electeric arc furnace metallic charge materials

et al. 2020

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The proper metallic charge ratio for Electeric Arc Furnaces (EAFs) has significant effects on the quality of the produced steel and performance of the furnace. Identification of this ratio based on inaccurate trial and error decision making gives rise to many defects. The aim of the study is to specify the best mixture of charge materials with respect to the operational parameters such as energy and material consumption and etc In this regard, the FHTOPSIS model has been utilized in fuzzy environment for pinpointing the alternatives for an EAF in a steel making company in Iran in order to reduce the erroneous decision. Consequently, the Analytical Hierarchical Process (AHP) has been applied to determine the relative importance of the criteria. Then the rank of most common metallic charges has been achieved by using the fuzzy TOPSIS. The result and its comparison with real word data revealed that the charge with 20% of DRI and 80% of scrap is the proper mix as EAF metallic charge. Nomenclature CECarbon Equivalent MD Metallization degree A Pairwise comparison matrix CR Consistency ratio CI Consistency index RI Random index l max Largest eigenvalue P ij Entry of the matrix A norm a ij Entry in the ith row and the jth column of A E j Entropy value of j th alternatives m Number of alternatives k Constant coefficient d j Deviation degree of j th criteria w j Criteria weight vector D Decision matrix x ij Entry in the ith row and the jth column of D r ij Normalized decision matrix R Normalized dimension-less fuzzy matrix RECEIVED

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Electric Arc Furnace: Most Efficient Technologies for Greenhouse Emissions Abatement

Cavaliere

2019

Clean Ironmaking and Steelmaking Processes

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Development of an oxygen-enhanced combustor for scrap preheating in an electric arc furnace

Cited by 10 publications

References 14 publications

Methods to optimize energy consumption in Conarc furnaces

Methods to optimize energy consumption in Conarc furnaces

A fuzzy approach to selecting the electeric arc furnace metallic charge materials

Electric Arc Furnace: Most Efficient Technologies for Greenhouse Emissions Abatement

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