A green and efficient strategy for heavy oil hydrocracking: Liquid phase continuous arc discharge plasma for n-hexadecane conversion

IF 5.8 2区生物学 Q1 AGRICULTURAL ENGINEERING

Biomass & Bioenergy Pub Date : 2025-01-30 DOI:10.1016/j.biombioe.2025.107641

Quanli Wang, Yanbin Xin, Bing Sun, Jingyu Liu, Jiabao Sun

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Abstract

This work utilized a novel liquid phase continuous arc (LCA) discharge for heavy oil upgrading, which was capable of directly generating a large-volume and continuous plasma within the oil. The impacts of hydrogen donors (water and ethanol) on the hydrocracking of the heavy oil model compound (n-hexadecane) were investigated. Meanwhile, the characteristics of LCA discharge plasma when ethanol and water were used as hydrogen donors were investigated. Additionally, the liquid phase and gas phase products were also examined. Furthermore, the reaction process of n-hexadecane hydrocracking was analyzed and discussed via Optical Emission Spectroscopy (OES) and thermodynamic analysis of product combination. The results demonstrate that the lightning ratio of n-cetane was approximately 73.7 % when water was served as the hydrogen donor, and this could be elevated to 84.4 %, when ethanol was utilized as the hydrogen supplier. This phenomenon could be attributed to ethanol's capacity to inhibit the formation of heavy by-products, thereby enhancing the yield of light products. Hydrocracking of n-hexadecane mainly took place through β-C-C bond cleavage to form the liquid phase products dominated by C₁₄ and the gas phase products dominated by C₂.

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来源期刊

Biomass & Bioenergy 工程技术-能源与燃料

CiteScore

11.50

自引率

3.30%

发文量

258

审稿时长

60 days

期刊介绍： Biomass & Bioenergy is an international journal publishing original research papers and short communications, review articles and case studies on biological resources, chemical and biological processes, and biomass products for new renewable sources of energy and materials. The scope of the journal extends to the environmental, management and economic aspects of biomass and bioenergy. Key areas covered by the journal: • Biomass: sources, energy crop production processes, genetic improvements, composition. Please note that research on these biomass subjects must be linked directly to bioenergy generation. • Biological Residues: residues/rests from agricultural production, forestry and plantations (palm, sugar etc), processing industries, and municipal sources (MSW). Papers on the use of biomass residues through innovative processes/technological novelty and/or consideration of feedstock/system sustainability (or unsustainability) are welcomed. However waste treatment processes and pollution control or mitigation which are only tangentially related to bioenergy are not in the scope of the journal, as they are more suited to publications in the environmental arena. Papers that describe conventional waste streams (ie well described in existing literature) that do not empirically address ''new'' added value from the process are not suitable for submission to the journal. • Bioenergy Processes: fermentations, thermochemical conversions, liquid and gaseous fuels, and petrochemical substitutes • Bioenergy Utilization: direct combustion, gasification, electricity production, chemical processes, and by-product remediation • Biomass and the Environment: carbon cycle, the net energy efficiency of bioenergy systems, assessment of sustainability, and biodiversity issues.