Effect of hydrogen addition on reduction behavior of iron oxides in gas-injection blast furnace

Lyu, Qing; Qie, Yana; Liu, Xiaojie; Lan, Chenchen; Li, Jianpeng; Song, Lixin

doi:10.1016/j.tca.2016.12.009

Cited by 56 publications

(19 citation statements)

References 18 publications

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“…Lyu et al [10] Investigated the effect of hydrogen addition on gas utilization in a blast furnace. The H 2 content should be controlled in the range of 5%-10%.…”

Section: Bai Et Al [9]mentioning

confidence: 99%

The Direct Reduction of Iron Ore with Hydrogen

Zhang

Nie

et al. 2021

Sustainability

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The steel industry represents about 7% of the world’s anthropogenic CO2 emissions due to the high use of fossil fuels. The CO2-lean direct reduction of iron ore with hydrogen is considered to offer a high potential to reduce CO2 emissions, and this direct reduction of Fe2O3 powder is investigated in this research. The H2 reduction reaction kinetics and fluidization characteristics of fine and cohesive Fe2O3 particles were examined in a vibrated fluidized bed reactor. A smooth bubbling fluidization was achieved. An increase in external force due to vibration slightly increased the pressure drop. The minimum fluidization velocity was nearly independent of the operating temperature. The yield of the direct H2-driven reduction was examined and found to exceed 90%, with a maximum of 98% under the vibration of ~47 Hz with an amplitude of 0.6 mm, and operating temperatures close to 500 °C. Towards the future of direct steel ore reduction, cheap and “green” hydrogen sources need to be developed. H2 can be formed through various techniques with the catalytic decomposition of NH3 (and CH4), methanol and ethanol offering an important potential towards production cost, yield and environmental CO2 emission reductions.

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“…Lyu et al [10] Investigated the effect of hydrogen addition on gas utilization in a blast furnace. The H 2 content should be controlled in the range of 5%-10%.…”

Section: Bai Et Al [9]mentioning

confidence: 99%

The Direct Reduction of Iron Ore with Hydrogen

Zhang

Nie

et al. 2021

Sustainability

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“…It is not possible to substitute all the coke with hydrogen. A myriad of studies and tests have been carried out to investigate the effect of the addition of hydrogen in the blast furnace gas; all of them show similar results . The addition of hydrogen is only useful to a certain extent due to its endothermic behavior.…”

Section: Introductionmentioning

confidence: 99%

Reduction of Iron Oxides with Hydrogen—A Review

Spreitzer

Schenk

2019

steel research int.

385

161

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This review focuses on the reduction of iron oxides using hydrogen as a reducing agent. Due to increasing requirements from environmental issues, a change of process concepts in the iron and steel industry is necessary within the next few years. Currently, crude steel production is mainly based on fossil fuels, and emitting of the climate‐relevant gas carbon dioxide is integral. One opportunity to avoid or reduce greenhouse gas emissions is substituting hydrogen for carbon as an energy source and reducing agent. Hydrogen, produced via renewable energies, allows carbon‐free reduction and avoids forming harmful greenhouse gases during the reduction process. The thermodynamic and kinetic behaviors of reduction with hydrogen are summarized and discussed in this review. The effects of influencing parameters, such as temperature, type of iron oxide, grain size, etc. are shown and compared with the reduction behavior of iron oxides with carbon monoxide. Different methods to describe the kinetics of the reduction progress and the role of the apparent activation energy are shown and proofed regarding their plausibility.

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“…Hydrogen gas has multidimensional applications in food industries, refinery, fuel cell, cutting/welding, metallurgical industries. [74][75][76][77][78] It can be commercially produced by different processes like electrolysis of water, fossil fuel and gasification of coal. 79,80 However, each process has its own challenges, like high input current density, high temperature, and CO 2 emission.…”

Section: Comparative Analysis Of Different Processes For Productionmentioning

confidence: 99%

“…Hydrogen gas has multidimensional applications in food industries, refinery, fuel cell, cutting/welding, metallurgical industries 74‐78 . It can be commercially produced by different processes like electrolysis of water, fossil fuel and gasification of coal 79,80 .…”

Section: Potential Applications Of Hydroelectric Cellmentioning

confidence: 99%

Electricity generation by splitting of water from hydroelectric cell: An alternative to solar cell and fuel cell

et al. 2020

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Harnessing green electricity by hydroelectric cell from water molecule splitting based on uniquely processed ferrites, multiferroic, composites and metal oxides has astonished the world. The specially processed oxygen deficient Nano porous ferrite/metal oxide attached with two dissimilar electrodes known as hydroelectric cell to generate electricity using a few drops of water for the first time it was invented in 2016. It is a primary source of energy that operates on the principle of spontaneous water molecule dissociation (OH − and H 3 O +) by oxygen deficient and Nano porous materials such as Mg 0.

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Effect of hydrogen addition on reduction behavior of iron oxides in gas-injection blast furnace

Cited by 56 publications

References 18 publications

The Direct Reduction of Iron Ore with Hydrogen

The Direct Reduction of Iron Ore with Hydrogen

Reduction of Iron Oxides with Hydrogen—A Review

Electricity generation by splitting of water from hydroelectric cell: An alternative to solar cell and fuel cell

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