Enhanced gasification effect from discharges and the formation of centimeter-scale plasma during microwave combustion of coke

Su, Yanlin; Zhou, Wei; Li, Junfeng; Gao, Jihui; Wang, Pengxiang; Zhao, Guangbo; Qin, Yukun

doi:10.1016/j.fuel.2022.126058

Cited by 5 publications

(1 citation statement)

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“…Therefore, it has the potential for cracking the carbon skeleton of coal. In our previous work, we observed a centimeter-scale plasma produced by microwave-induced discharge, which can upgrade the air ionization and expand the range of a flame. , However, the enhancing effect of microwave-induced discharge on anthracite cracking is still unclear. Moreover, the addition of other working gases, such as Ar, H 2 O, and He, can regulate the energy transfer pathway in plasma, − leading to changes in production components.…”

Section: Introductionmentioning

confidence: 99%

Production Characteristics of Volatiles from Anthracite Cracking via Microwave-Induced Discharge

Zhang,

Liu,

Han

et al. 2024

ACS Omega

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The ignition of anthracite with arc plasma has not been applied due to its low chemical effect and volatile content in anthracite. The nonequilibrium plasma generated by a microwaveinduced discharge has the ability to break branch chains and aromatic ring structures by kinetic effects, which has the potential for anthracite cracking and ignition. This work investigated anthracite cracking by microwave-induced discharges under an Ar/N 2 atmosphere. Results showed that the maximum levels of CO production, total gas production, and total gas generation rate occur in 20% argon content due to an increase in the number of electrons and a decrease in the total electronic states excitation rate constant with an increase in the argon content. The total gas production in plasma cracking is larger than that by pyrolysis, indicating the crack of polycyclic aromatic hydrocarbon by plasma. In addition, we attempted anthracite combustion under an 80% N 2 and 20% O 2 atmosphere.

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