Enhancement of coal tar pitch carbonization with biochar: A metallurgical formed biocoke product produced by waste coke breeze and bamboo powder

Wang, Lin; Yang, Yongbin; Ou, Yang; Dong, Yinrui; Zhong, Qiang; Zhang, Yan; Li, Qian; Huang, Zhucheng; Jiang, Tao

doi:10.1016/j.fuel.2023.130238

Cited by 3 publications

(1 citation statement)

References 40 publications

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“…The cracks and pores inside the formed coke product can be filled with a suitable amount of sawdust biochar powder, improving its internal structure and performance. A following study by Wang et al, (2024) [22] revealed the possibility of using a mix of powder material from residual coke breeze and biochar from bamboo (biochar to coke breeze 2:8) in the percentage of 4%. The main reason for biochar is to give a better pressure resistance and density to briquettes, while saving the residual coal coke.…”

Section: Biochar Substitution In Coke Making Processesmentioning

confidence: 99%

Potential and Environmental Benefits of Biochar Utilization for Coal/Coke Substitution in the Steel Industry

Al Hosni,

Domini,

Vahidzadeh

et al. 2024

Energies

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The metallurgical sector is one of the most emission- and energy-intensive industries. The possibility of using fossil carbon substitutes has been investigated to reduce the environmental impact of the steelmaking sector. Among others, biochar emerged as a promising fossil coal/coke substitute. We conducted a literature review on biochar use in the metallurgical sector and its potential environmental benefits. The possibility for biochar as a coal/coke substitute is influenced by the source of biochar production and the process within which it can be used. In general, it has been observed that substitution of biochar ranging from a minimum of 5% to a maximum of 50% (mostly around 20–25%) is possible without affecting, or in some cases improving, the process, in coke making, iron sintering, blast furnaces and electric furnaces application. In some studies, the potential CO2 reduction due to biochar use was estimated, ranging from 5% to about 50%. Despite there still being an area of further investigation, biochar appeared as a promising resource with a variety of uses in the metallurgical sector, contributing to the lowering of the environmental impact of the sector.

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Section: Biochar Substitution In Coke Making Processesmentioning

confidence: 99%

Potential and Environmental Benefits of Biochar Utilization for Coal/Coke Substitution in the Steel Industry

Al Hosni,

Domini,

Vahidzadeh

et al. 2024

Energies

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show abstract

Co-pyrolysis of coal with biomass residues and coke breeze for superior quality coke via hot pressing technology

Wei,

Pang,

Liang

et al. 2024

Journal of Analytical and Applied Pyrolysis

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Enhancing the Strength of Formed Coke from Woody Biomass with the Addition of Biomass Extracts

Okida,

Dohi,

Kudo

et al. 2024

Energy Fuels

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The replacement of coal with lignocellulosic biomass as feedstock for blast furnace coke is a crucial approach to decarbonizing the steel industry, which is a sector that is difficult to abate. Unlike the addition of a small amount of biomass or its charcoal to blended coal for conventional coke, the use of 100% biomass as a raw material is possible with formed coke, while its practical application requires an improvement in strength. Here, we report that the addition of a low-molecular-weight fraction obtained from degradative solvent extraction of biomass, called Soluble, is highly effective in enhancing the strength of the formed coke from softwood biomass. When used alone as a raw material, Soluble foams during carbonization, preventing coke formation. However, when mixed with woody biomass, it disperses within and between biomass particles during pelletization (hot press at 130 °C) or carbonization (cold press). Soluble has a minimal impact on the pyrolysis of biomass and dimensional changes of the biomass-derived carbonaceous substrate during carbonization, but it acts as a binder to sustain the strength of the resulting coke. As a result, the tensile strength of formed coke from biomass alone, which was 1.2 MPa with a cold press and 7.5 MPa with a hot press, improved with the increasing addition of Soluble, reaching around 25 MPa at 30 wt % addition. The effect of addition varied significantly depending on the preparation method and properties of Soluble, particularly highlighting the importance of the resolidification temperature during the carbonization process. This method was also effective for formed coke derived from lower-quality raw materials such as rice husk and lignite compared to softwood, but the optimal addition amount varied due to differences in the Soluble retention capacity.

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Enhancement of coal tar pitch carbonization with biochar: A metallurgical formed biocoke product produced by waste coke breeze and bamboo powder

Cited by 3 publications

References 40 publications

Potential and Environmental Benefits of Biochar Utilization for Coal/Coke Substitution in the Steel Industry

Potential and Environmental Benefits of Biochar Utilization for Coal/Coke Substitution in the Steel Industry

Co-pyrolysis of coal with biomass residues and coke breeze for superior quality coke via hot pressing technology

Enhancing the Strength of Formed Coke from Woody Biomass with the Addition of Biomass Extracts

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