Journal ArticleDOI
Process Simulation and Economic Feasibility Analysis for a Hydrogen-Based Novel Suspension Ironmaking Technology
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TLDR
In this article, a novel gas-solid suspension ironmaking process is proposed at the University of Utah, which is based on the flash reduction of iron ore concentrate using a gaseous reagent, such as hydrogen, syngas, natural gas or a combination of thereof.Abstract:
A novel gas-solid suspension ironmaking process is under development at the University of Utah, which would greatly reduce energy consumption and carbon dioxide emission compared with current blast furnace technology. The proposed process is based on the flash reduction of iron ore concentrate using a gaseous reagent, such as hydrogen, syngas, natural gas or a combination of thereof.
A process flow sheet of the proposed ironmaking process using purchased hydrogen was constructed and then simulations were performed at several potential operating conditions. Ironmaking was simulated using two different process configurations. The simulation results show that the required fresh hydrogen would increase with higher excess driving force and operating temperature, but not greatly when hydrogen is preheated. Compared with the average blast furnace process, the proposed process would reduce energy consumption by 57 - 60%, using the higher heating value of hydrogen (71 – 73%, if the lower heating value is used), when hydrogen and coal are considered as the starting materials in the respective processes. The economic feasibility analysis using net present value (NPV) indicates that the proposed process could be economically feasible at elevated hot metal prices and/or if reduction in carbon dioxide emissions has a significant value in a cap and trade scenario.read more
Citations
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Direct combustion of recyclable metal fuels for zero-carbon heat and power
Jeffrey M. Bergthorson,Samuel Goroshin,Michael Soo,Philippe Julien,Jan Palecka,David L. Frost,D.J. Jarvis +6 more
TL;DR: In this article, a metal-fuelled zero-carbon heat engine is proposed for power generation in which metal fuels are burned with air in a combustor to provide clean, high-grade heat.
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A comprehensive review on energy efficient CO2 breakthrough technologies for sustainable green iron and steel manufacturing
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Present needs, recent progress and future trends of energy-efficient Ultra-Low Carbon Dioxide (CO2) Steelmaking (ULCOS) program
TL;DR: In this paper, the authors analyzed the technological developments in iron and steel industry and the progress of present experimental works developed inside the ULCOS I and II projects by collating updated information from a wide range of sources.
Journal ArticleDOI
Hydrogen Reduction Kinetics of Magnetite Concentrate Particles Relevant to a Novel Flash Ironmaking Process
TL;DR: In this paper, the authors determined comprehensive kinetics of the flash reduction reaction of magnetite concentrate particles by hydrogen and found that the reduction kinetics had a 1/2-order dependence on hydrogen partial pressure and activation energy of 463 kJ/mol.
Journal ArticleDOI
Kinetics of the Reduction of Hematite Concentrate Particles by Carbon Monoxide Relevant to a Novel Flash Ironmaking Process
TL;DR: In this paper, the carbon monoxide reduction kinetics of hematite concentrate particles (average particle size 21µm) were determined in the temperature range 1473-K to 1623-K (1200-C to 1350-C).
References
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ReportDOI
Hydrogen Supply: Cost Estimate for Hydrogen Pathways--Scoping Analysis, January 22, 2002--July 22, 2002
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TL;DR: A comparative scooping economic analysis of 19 pathways for producing, handling, distributing, and dispensing hydrogen for fuel cell vehicle applications is presented in this article, showing a comparative analysis of commercial and non-commercial applications.
Journal ArticleDOI
The sticking problem during direct reduction of fine iron ore in the fluidized bed
TL;DR: In this article, a review of possible chemical reactions and their thermodynamic analysis during direct reduction of iron ore in a fluidized bed was described, and the most important parameters on the sticking were analyzed.
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Journal ArticleDOI
Flowsheet development, process simulation and economic feasibility analysis for novel suspension ironmaking technology based on natural gas: Part 1 – Flowsheet and simulation for ironmaking with reformerless natural gas
TL;DR: In this article, a gas-solid suspension ironmaking process with much less energy consumption and carbon dioxide emissions than the current blast furnace technology is under development at the University of Utah, which is based on flash reduction of iron ore concentrate with a gaseous reagent, such as hydrogen, syngas and/or natural gas.
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