A Numerical Study on the Operation of the H2 Shaft Furnace with Top Gas Recycling

Lei Shao; Quanle Wang; Yingxia Qu; Henrik Saxén; Zongshu Zou

doi:10.1007/s11663-020-02020-6

A Numerical Study on the Operation of the H₂ Shaft Furnace with Top Gas Recycling

Lei Shao, Quanle Wang, Yingxia Qu, Henrik Saxén, Zongshu Zou^*

^*Tämän työn vastaava kirjoittaja

Laboratory of Process and Systems Engineering

Tutkimustuotos: Lehtiartikkeli › Artikkeli › Tieteellinen › vertaisarvioitu

19 Sitaatiot (Scopus)

66 Lataukset (Pure)

Abstrakti

The breakthrough route involving a reduction shaft furnace operated with pure hydrogen gas (here called H₂-SF) and the electric arc furnace is widely accepted as one of the most viable future alternatives for industrial-scale production of primary steel with minor CO₂ emissions. It has been clarified that the largest portion of the total energy for the entire route is consumed by the H₂-SF operation, but this unit has not yet received much attention and should therefore be explored. For this, a mathematical model of a reduction shaft furnace is presented in this paper, where a set of simulations were also performed to shed more light on the operation of the H₂-SF equipped with a top gas recycling system. The results show that a high gas feed rate is required for guaranteeing a smooth H₂-SF operation due to the strong heat demand. An increase in the feed temperature of the gas or in furnace height can reduce the required gas feed. However, an excessive length may conversely result in an increase in the total energy consumption. The model and its results are expected to be helpful for gaining a better understanding of the complex processes in and constraints of the H₂-SF.

Alkuperäiskieli	Englanti
Sivut	451-459
Sivumäärä	9
Julkaisu	Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
Vuosikerta	52
Numero	1
DOI - pysyväislinkit	https://doi.org/10.1007/s11663-020-02020-6
Tila	Julkaistu - 2 tammik. 2021
OKM-julkaisutyyppi	A1 Julkaistu artikkeli, soviteltu

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Pääsy asiakirjaan

10.1007/s11663-020-02020-6

Shao_etal_revisedHyväksytty kirjoittajan käsikirjoitus, 1,47 MBLisenssi: Publisher rights policy

https://urn.fi/URN:NBN:fi-fe2022021819769

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Viittausmuodot

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abstract = "The breakthrough route involving a reduction shaft furnace operated with pure hydrogen gas (here called H2-SF) and the electric arc furnace is widely accepted as one of the most viable future alternatives for industrial-scale production of primary steel with minor CO2 emissions. It has been clarified that the largest portion of the total energy for the entire route is consumed by the H2-SF operation, but this unit has not yet received much attention and should therefore be explored. For this, a mathematical model of a reduction shaft furnace is presented in this paper, where a set of simulations were also performed to shed more light on the operation of the H2-SF equipped with a top gas recycling system. The results show that a high gas feed rate is required for guaranteeing a smooth H2-SF operation due to the strong heat demand. An increase in the feed temperature of the gas or in furnace height can reduce the required gas feed. However, an excessive length may conversely result in an increase in the total energy consumption. The model and its results are expected to be helpful for gaining a better understanding of the complex processes in and constraints of the H2-SF.",

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author = "Lei Shao and Quanle Wang and Yingxia Qu and Henrik Sax{\'e}n and Zongshu Zou",

note = "Funding Information: The authors wish to express their gratitude to the National Science Foundation of China (Grants 51604068, 51574064) and the Fundamental Research Funds for the Central Universities (N182504012) for financially supporting this work. Publisher Copyright: {\textcopyright} 2021, The Minerals, Metals & Materials Society and ASM International.",

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AU - Saxén, Henrik

AU - Zou, Zongshu

N1 - Funding Information: The authors wish to express their gratitude to the National Science Foundation of China (Grants 51604068, 51574064) and the Fundamental Research Funds for the Central Universities (N182504012) for financially supporting this work. Publisher Copyright: © 2021, The Minerals, Metals & Materials Society and ASM International.

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N2 - The breakthrough route involving a reduction shaft furnace operated with pure hydrogen gas (here called H2-SF) and the electric arc furnace is widely accepted as one of the most viable future alternatives for industrial-scale production of primary steel with minor CO2 emissions. It has been clarified that the largest portion of the total energy for the entire route is consumed by the H2-SF operation, but this unit has not yet received much attention and should therefore be explored. For this, a mathematical model of a reduction shaft furnace is presented in this paper, where a set of simulations were also performed to shed more light on the operation of the H2-SF equipped with a top gas recycling system. The results show that a high gas feed rate is required for guaranteeing a smooth H2-SF operation due to the strong heat demand. An increase in the feed temperature of the gas or in furnace height can reduce the required gas feed. However, an excessive length may conversely result in an increase in the total energy consumption. The model and its results are expected to be helpful for gaining a better understanding of the complex processes in and constraints of the H2-SF.

AB - The breakthrough route involving a reduction shaft furnace operated with pure hydrogen gas (here called H2-SF) and the electric arc furnace is widely accepted as one of the most viable future alternatives for industrial-scale production of primary steel with minor CO2 emissions. It has been clarified that the largest portion of the total energy for the entire route is consumed by the H2-SF operation, but this unit has not yet received much attention and should therefore be explored. For this, a mathematical model of a reduction shaft furnace is presented in this paper, where a set of simulations were also performed to shed more light on the operation of the H2-SF equipped with a top gas recycling system. The results show that a high gas feed rate is required for guaranteeing a smooth H2-SF operation due to the strong heat demand. An increase in the feed temperature of the gas or in furnace height can reduce the required gas feed. However, an excessive length may conversely result in an increase in the total energy consumption. The model and its results are expected to be helpful for gaining a better understanding of the complex processes in and constraints of the H2-SF.

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KW - top gas recycling

KW - energy consumption

KW - CO2 emissions

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