Experimental study and kinetic modeling of methane decomposition in a rotating arc plasma reactor with different cross-sectional areas

Kheirollahivash, Mahsa; Rashidi, Fariborz; Moshrefi, Mohammad Mahdi

doi:10.1016/j.ijhydene.2019.05.011

Cited by 20 publications

(3 citation statements)

References 39 publications

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“…Table ,,− shows the energy yield of conventional and laboratory-scale plasma processes for hydrogen production. It is worthwhile to note that the results of only those studies that have employed non-thermal plasma reactors and reactor configurations using swirl flows are compared in the table.…”

Section: Resultsmentioning

confidence: 99%

Selective Production of Hydrogen and Solid Carbon via Methane Pyrolysis Using a Swirl-Induced Point–Plane Non-thermal Plasma Reactor

2022

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In this study, a novel swirl-induced point−plane discharge reactor is developed for direct conversion of methane to hydrogen and solid carbon. The plasma column formed in the central hub of the swirl electrode exhibited enhanced energy transfer to methane molecules as a result of the formation of a central recirculation zone. The effects of the flow rate on high-frequency−high-voltage discharges were investigated. The yield of the major gaseous product, hydrogen, was 16%, and hydrocarbons, like acetylene and ethane, were also detected as minor byproducts. The selectivity to hydrogen was 84%, and the highest methane conversion of 19.7% was achieved at a flow rate of 0.5 L/min and input power of ∼55 W. Using thermographic analysis, the maximum operating temperature in the discharge regime was found to be 130 °C, which appears to be an added advantage of reduced energy usage on external cooling methods. The morphology of solid carbon formed on the quartz wall was characterized using electron microscopy and Raman spectroscopy, which suggested irregular aggregated structures of high-purity carbon (∼96%). Thermogravimetric analysis showed high thermal stability of carbon. In terms of conversion, energy yield and solid carbon purity, this reactor design presents a promising approach for carbon-neutral hydrogen production from methane.

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Section: Resultsmentioning

confidence: 99%

Selective Production of Hydrogen and Solid Carbon via Methane Pyrolysis Using a Swirl-Induced Point–Plane Non-thermal Plasma Reactor

2022

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“…[ 38 ] Plasma‐assisted methane decomposition (PAMD) system can initiate a chemical reaction at a lower operating temperature via high‐energy electron collisions with the CH 4 molecules. [ 158 ] In a plasma reactor, free electrons can be accelerated by strong electric or magnetic fields, thereby increasing their kinetic energy. Generally, in the plasma bulk, the temperature of electrons ranges from 1 to 5 eV.…”

Section: Application Of Plasma Technology For Different Ch4 Reforming...mentioning

confidence: 99%

Plasma‐Assisted Reforming of Methane

Feng

Sun

et al. 2022

Advanced Science

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Methane (CH4) is inexpensive, high in heating value, relatively low in carbon footprint compared to coal, and thus a promising energy resource. However, the locations of natural gas production sites are typically far from industrial areas. Therefore, transportation is needed, which could considerably increase the sale price of natural gas. Thus, the development of distributed, clean, affordable processes for the efficient conversion of CH4 has increasingly attracted people's attention. Among them are plasma technology with the advantages of mild operating conditions, low space need, and quick generation of energetic and chemically active species, which allows the reaction to occur far from the thermodynamic equilibrium and at a reasonable cost. Significant progress in plasma‐assisted reforming of methane (PARM) is achieved and reviewed in this paper from the perspectives of reactor development, thermal and nonthermal PARM routes, and catalysis. The factors affecting the conversion of reactants and the selectivity of products are studied. The findings from the past works and the insight into the existing challenges in this work should benefit the further development of reactors, high‐performance catalysts, and PARM routes.

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“…Menurut SPLN No.72 Tahun 1987, disebutkan bahwa drop atau jatuh tegangan yang dibolehkan yaitu 5%, begitu juga dengan standar IEC [4]. Dengan memperbesar tegangan tanpa memperhatikan kondisi luas penampang akan menimbulkan masalah baru berupa kasus korona [8][9][10][11][12][13].…”

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Analisis Pengaruh Jarak Antar Fasa Terhadap Rugi Korona Pada Saluran Udara Tegangan Ekstra Tinggi 275 KV

Ihsan,

Erhaneli,

Anthony

2023

emitor

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Penelitian ini membahas tentang rugi-rugi daya dan rugi efisiensi terhadap variasi nilai jarak antar fasa pada Saluran Udara Tegangan Ekstra Tinggi dengan kapasitas tegangan 275 kV. Tempat aplikasi dari stasiun transmisi Kiliran Jao ke stasiun transmisi Payakumbuh dengan panjang saluran 126,4 km. Saluran Udara Tegangan Ekstra Tinggi itu, terjadi permasalahan munculnya korona dengan ditandai adanya bunyi bising, berbau ozon, dan cahaya ungu pada penghantar. Korona dapat menyebabkan rugi-rugi daya dan rugi efisiensi mengakibatkan daya yang dikirim ke konsumen tidak sesuai. Tujuan penelitian dilakukan untuk mengetahui nilai rugi-rugi daya dan efisiensi dengan menggunakan metode analisis perhitungan matematis persamaan Peek dan lainnya. Perhitungan dilakukan berdasarkan data-data yang diperoleh saat melakukan penelitian dengan divariasikan nilai jarak antar fasa dari 4 meter sampai dengan 8 meter. Hasil yang diperoleh bahwa rugi-rugi daya maksimum terjadi pada jarak antar fasa 4 meter (suhu maksimum) yaitu 1880,832 kW dan rugi efisiensi 1,3 %. Rugi-rugi daya minimum terjadi pada jarak antar fasa 8 meter (suhu minimum) yaitu 2,195 kW dan rugi efisiensi yaitu 0,1 %. Hal tersebut disebabkan oleh suhu yang lebih rendah mengakibatkan penghantar tidak terlalu panas dan cuaca baik (cerah) menyebabkan rugi-rugi daya dan rugi efisiensi kecil. faktor yang paling signifikan adalah jarak antar fasa, semakin jauh jarak antar fasa semakin kecil rugi-rugi daya dan rugi efisiensi. Sebaliknya semakin dekat jarak antar fasa, semakin besar rugi-rugi daya dan rugi efisiensi.

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Experimental study and kinetic modeling of methane decomposition in a rotating arc plasma reactor with different cross-sectional areas

Cited by 20 publications

References 39 publications

Selective Production of Hydrogen and Solid Carbon via Methane Pyrolysis Using a Swirl-Induced Point–Plane Non-thermal Plasma Reactor

Selective Production of Hydrogen and Solid Carbon via Methane Pyrolysis Using a Swirl-Induced Point–Plane Non-thermal Plasma Reactor

Plasma‐Assisted Reforming of Methane

Analisis Pengaruh Jarak Antar Fasa Terhadap Rugi Korona Pada Saluran Udara Tegangan Ekstra Tinggi 275 KV

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