Effects of discharge frequency on the conversion of n-hexadecane by pulsed liquid-phase discharge in recycle and batch devices

IF 5.6 2区 工程技术 Q2 ENERGY & FUELS
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Abstract

Converting hydrocarbons can make the fossil fuel industry more flexible in responding to market changes by producing various products to meet market demands. Efficient, clean, and flexible plasma processes are a highly promising technology for hydrocarbon processing and conversion. In this study, the conversion of n-hexadecane was investigated using ethanol solution-assisted pulsed liquid-phase discharge plasma. The effects of recycle and batch devices and discharge frequency on feedstocks conversions and product yields were examined. The use of a recycle device facilitated the conversion of n-hexadecane. Adjusting the frequency enabled the regulation of products concentration. High discharge frequency increased the cracking of n-hexadecane and promoted further cracking of reactants into smaller molecular products, boosting the proportion of H2 and C2 hydrocarbons, and enhancing the yield of gases and light hydrocarbons. Reducing the frequency favored polymerization reactions, resulting in the formation of heavy hydrocarbons. At a frequency of 10.2 kHz, the recycle device achieved a gas production rate of 112.1 mL/min and a gas production efficiency of 87.5 mL/kJ. With an SEI of 3202 kJ/L, the conversion of n-hexadecane was 15.5 %, the yield of light hydrocarbons was 717.0 mg, and the light product selectivity was 97.1 %. This study offers an efficient approach for the processing and conversion of hydrocarbons in the fossil fuel industry.

放电频率对循环和间歇装置中脉冲液相放电转化正十六烷的影响
碳氢化合物的转化可以使化石燃料工业更加灵活地应对市场变化,生产各种产品以满足市场需求。高效、清洁、灵活的等离子工艺是一种极具潜力的碳氢化合物加工和转化技术。本研究利用乙醇溶液辅助脉冲液相放电等离子体研究了正十六烷的转化。研究考察了循环和批量装置以及放电频率对原料转化和产品产量的影响。循环装置的使用促进了正十六烷的转化。调整频率可以调节产品浓度。高放电频率增加了正十六烷的裂解,促进反应物进一步裂解成更小分子的产物,提高了 H2 和 C2 碳氢化合物的比例,增加了气体和轻质碳氢化合物的产量。降低频率有利于聚合反应,从而形成重烃。频率为 10.2 kHz 时,循环装置的气体生产率为 112.1 mL/min,气体生产效率为 87.5 mL/kJ。SEI 为 3202 kJ/L,正十六烷的转化率为 15.5%,轻烃产量为 717.0 mg,轻产品选择性为 97.1%。这项研究为化石燃料工业提供了一种加工和转化碳氢化合物的有效方法。
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来源期刊
Journal of The Energy Institute
Journal of The Energy Institute 工程技术-能源与燃料
CiteScore
10.60
自引率
5.30%
发文量
166
审稿时长
16 days
期刊介绍: The Journal of the Energy Institute provides peer reviewed coverage of original high quality research on energy, engineering and technology.The coverage is broad and the main areas of interest include: Combustion engineering and associated technologies; process heating; power generation; engines and propulsion; emissions and environmental pollution control; clean coal technologies; carbon abatement technologies Emissions and environmental pollution control; safety and hazards; Clean coal technologies; carbon abatement technologies, including carbon capture and storage, CCS; Petroleum engineering and fuel quality, including storage and transport Alternative energy sources; biomass utilisation and biomass conversion technologies; energy from waste, incineration and recycling Energy conversion, energy recovery and energy efficiency; space heating, fuel cells, heat pumps and cooling systems Energy storage The journal''s coverage reflects changes in energy technology that result from the transition to more efficient energy production and end use together with reduced carbon emission.
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