Energy analysis of a blast-furnace system operating with the Corex process and CO2 removal

Ziębik, A.; Lampert, K.; Szega, Marcin

doi:10.1016/j.energy.2007.09.003

Cited by 42 publications

(23 citation statements)

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“…Worldwide a few commercial COREX plants were built, but their HM production (0.3-2.0 Mt/ y) remains low compared to the average production of one BF. The BF process remains more cost-effective in producing larger amounts of HM 1,47 . One recent development is the HIsarna process, a collaboration between various European steelmaking companies and universities and Rio Tinto from Australia.…”

Section: Discussionmentioning

confidence: 99%

Sulphur removal in ironmaking and oxygen steelmaking

Schrama

Beunder

Berg

et al. 2017

Ironmaking & Steelmaking

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Sulphur removal in the ironmaking and oxygen steelmaking process is reviewed. A sulphur balance is made for the steelmaking process of Tata Steel IJmuiden, the Netherlands. There are four stages where sulphur can be removed: in the blast furnace (BF), during hot metal (HM) pretreatment, in the converter and during the secondary metallurgy (SM) treatment. For sulphur removal a low oxygen activity and a basic slag are required. In the BF typically 90% of the sulphur is removed; still, the HM contains about 0.03% of sulphur. Different HM desulphurisation processes are used worldwide. With co-injection or the Kanbara reactor, sulphur concentrations below 0.001% are reached. Basic slag helps desulphurisation in the converter. However, sulphur increase is not uncommon in the converter due to high oxygen activity and sulphur input via scrap and additions. For low sulphur concentrations SM desulphurisation, with a decreased oxygen activity and a basic slag, is always required.

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Section: Discussionmentioning

confidence: 99%

Sulphur removal in ironmaking and oxygen steelmaking

Schrama

Beunder

Berg

et al. 2017

Ironmaking & Steelmaking

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“…This kind of blast furnace modeling has been reported by Peacey and Davenport, 21) Rasul et al, 22) Hooey et al 23) and Ziebik et al. 24) The model assumption is that all the higher oxides in upper zone are reduced to wüstite when entering to thermal reserve zone. The conceptual division and thermal reserve zone are based on the assumption that above the thermal reserve zone in temperatures below 1 200 K the CO2 produced by the wüstite reduction reaction ............... (3) is no longer reconverted to CO by Boudouard reaction.…”

Section: Ironmaking Processesmentioning

confidence: 99%

Effects of Biomass Use in Integrated Steel Plant – Gate-to-gate Life Cycle Inventory Method

Suopajärvi

Fabritius

2012

ISIJ Int.

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Biomass use has been identified as one of the possibilities to mitigate fossil greenhouse gas emissions in iron and steelmaking. Biomass can be used to replace part of the fossil-based reducing agents in blast furnace without compromising the quality of the final product. The advantage of biomass compared to fossil-based fuels is that it is renewable energy source and can thus be considered carbon dioxide neutral within specified system boundaries. Few studies have been conducted where the effect of biomass introduction to blast furnace process have been evaluated with mathematical modeling or lab-scale experiments. The other body of literature concerns the life cycle based assessments. This study presents the effects of biomass use in plant site scale with energy balances and CO2 reduction potential. For the evaluation purposes integrated steel plant model based on physico-chemical relationships was developed. The model can be used for calculating gate-to-gate life cycle inventory for evaluating the environmental burden of the integrated steel plant. Effect of charcoal as tuyére injectant to blast furnace process was firstly evaluated. The results indicate that to replace 1 kg of specific heavy oil, 1.15 kg charcoal would be needed. Plant-wide effects of two distinct charcoal usage scenarios were evaluated and compared to base case scenario with fossil-based reducing agents. Plant site evaluation suggests that by introducing biomass to integrated steel plant, major changes in energy balances occur and significant fossil CO2 emission reduction can be achieved. This study indicates that 15.4 to 26.4% reduction in fossil CO2 emissions could be achieved in plant scale.

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“…An alternative (or possible supplement [36]) is the COREX process. The key feature of this process is that iron ore melting is separated from iron ore reduction.…”

Section: Iron and Steelmentioning

confidence: 99%

CCS from industrial sources

Fennell

Florin

Napp

et al. 2012

Sustainable Technologies, Systems &Amp; Policies

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The literature concerning the application of CCS to industry is reviewed. Costs are presented for different sectors including ''high purity'' (processes which inherently produce a high concentration of CO 2 ), cement, iron and steel, refinery and biomass. The application of CCS to industry is a field which has had much less attention than its application to the electricity production sector. Costs range from less than $ 2011 10/tCO 2 up to above $ 2011 100/tCO 2 . In the words of a synthesis report from the United Nations Industrial Development Organisation (UNIDO) ''This area has so far not been the focus of discussions and therefore much attention needs to be paid to the application of CCS to industrial sources if the full potential of CCS is to be unlocked''.

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Energy analysis of a blast-furnace system operating with the Corex process and CO2 removal

Cited by 42 publications

References 1 publication

Sulphur removal in ironmaking and oxygen steelmaking

Sulphur removal in ironmaking and oxygen steelmaking

Effects of Biomass Use in Integrated Steel Plant – Gate-to-gate Life Cycle Inventory Method

CCS from industrial sources

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Energy analysis of a blast-furnace system operating with the Corex process and CO2 removal

Cited by 42 publications

References 1 publication

Sulphur removal in ironmaking and oxygen steelmaking

Sulphur removal in ironmaking and oxygen steelmaking

Effects of Biomass Use in Integrated Steel Plant &ndash; Gate-to-gate Life Cycle Inventory Method

CCS from industrial sources

Contact Info

Product

Resources

About

Effects of Biomass Use in Integrated Steel Plant – Gate-to-gate Life Cycle Inventory Method