Reforming of converter gas with coke oven gas for thermochemical energy storage and carbon dioxide emission reduction

Ren, Binglang; Guang, Wang; Zuo, Haibin; Xue, Qingguo; She, Xuefeng; Wang, Jingsong

doi:10.1016/j.fuproc.2021.106957

Cited by 8 publications

(3 citation statements)

References 28 publications

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“…In 2022, China's crude steel production is 1017.959 million tonnes, of which more than 80% is produced by the blast furnace-basic oxygen furnace (BF-BOF) process. [3][4][5] According to the energy flow of the BF-BOF production process, the input energy of crude steel production is 23-25 GJ/TCS (TCS: tonne of crude steel), in which 14-16 GJ energy is converted into heat energy to meet the demand of producing heat energy conditions, and the remaining 7-10 GJ energy is converted into by-product gas (about 30% of the total energy consumption). From the actual production situation, the production of 1 TCS can recover about 90-120 Nm 3 converter gas (LDG), and the production of 1 tonne of coke can produce 400-500 Nm 3 coke oven gas (COG).…”

Section: Introductionmentioning

confidence: 99%

“…In previous studies, we have confirmed the feasibility of injecting COG into the converter flue for in situ online reforming from thermodynamic and kinetic experiments but did not conduct indepth research on the catalytic effect of converter dust on the reforming process. [3,46,47] Therefore, in this article, we studied the influence of converter dust on the reforming process of by-product gas and the influence of main substances in converter dust on DRM reaction, aiming to understand the catalytic effect of dust on LDG þ COG reforming process more comprehensively and deeply. Finally, the optimal range of thermochemical energy storage is obtained by thermodynamic calculation, and the energy storage of LDG reforming in tonne steel is calculated with relevant experimental data.…”

Section: Introductionmentioning

confidence: 99%

“…[3][4][5] According to the energy flow of the BF-BOF production process, the input energy of crude steel production is 23-25 GJ/TCS (TCS: tonne of crude steel), in which 14-16 GJ energy is converted into heat energy to meet the demand of producing heat energy conditions, and the remaining 7-10 GJ energy is converted into by-product gas (about 30% of the total energy consumption). From the actual production situation, the production of 1 TCS can recover about 90-120 Nm 3 converter gas (LDG), and the production of 1 tonne of coke can produce 400-500 Nm 3 coke oven gas (COG). LDG is mainly composed of CO (60%-65%) and CO 2 (15%-20%) and contains abundant heat resources.…”

Section: Introductionmentioning

confidence: 99%

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Study on the Catalytic Effect of Converter Dust on In Situ Online Reforming of Metallurgical By‐Product Gas and Thermochemical Energy Storage Analysis

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et al. 2024

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In situ online reforming of converter gas and coke oven gas is realized by injecting coke oven gas into converter flue. This process utilizes methane dry reforming reaction to achieve heat energy recovery and CO2 capture and utilization. Moreover, the converter flue provides an excellent thermodynamic, kinetic, and catalytic environment. Experiments show that converter dust greatly improves the conversion rate of CH4 and CO2, and increases with the increase of the addition of converter dust. The conversion of CH4 reaches above 80% at 1150 °C, which is about 40% higher than that without catalyst. The CO2 conversion is more than 85% at 1150 °C, while it is only about 50% without catalysis. In addition, through the study of the main components of converter dust, the order of promoting CH4 decomposition is: Fe > Fe3O4≈CaO > FeO; the order of promoting effect on C–CO2 reaction is: Fe3O4 > CaO > FeO > Fe. Finally, the reforming energy storage is calculated by thermodynamic calculation and experimental data. The reforming energy storage of tonne crude steel is about 159.589 MJ, accounting for 44.5% of the total physical heat energy of converter flue gas, and CO2 emission reduction in converter flue gas is more than 50%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%