Decomposition of methane to hydrogen using nanosecond pulsed plasma reactor with different active volumes, voltages and frequencies. (1st May 2016)

• Record Type: Journal Article
• Authors: Khalifeh, Omid; Mosallanejad, Amin; Taghvaei, Hamed; Rahimpour, Mohammad Reza; Shariati, Alireza
• Is Part Of: Applied energy. Volume 169(2016)
• Page Start: 585
• Page End: 596
• Publication Date: 2016-05-01
• Subjects: Non-thermal plasma -- Nanosecond pulsed plasma -- Hydrogen production -- Methane decomposition -- Active volume; Power (Mechanics) -- Periodicals; Energy conservation -- Periodicals; Energy conversion -- Periodicals; 621.042
• DOI: 10.1016/j.apenergy.2016.02.017
• Languages: English
• ISSNs: 0306-2619

Abstract

Graphical abstract: Highlights: CH4 conversion into H2 is investigated in a nanosecond pulsed DBD reactor. The absence of CO and CO2 in the product gas is highly favorable. Effects of external electrode length, applied voltage and frequency are examined. The maximum efficiency of 7.23% is achieved at the electrode length of 15 cm. The maximum CH4 conversion of 87.2% is obtained at discharge power 268.92 W. Abstract: In this paper, the methane conversion into hydrogen is investigated experimentally in a nanosecond pulsed DBD reactor. In order to achieve pure hydrogen production with minimum power consumption, effects of some operating parameters including external electrode length, applied voltage and pulse repetition frequency have been evaluated. Results show that although higher CH4 conversion and H2 concentration can be obtained at longer electrode lengths, higher applied voltages and pulse repetition frequencies, these parameters should be optimized for efficient hydrogen production. Actually, the maximum CH4 conversion of 87.2% and maximum hydrogen percentage of 80% are obtained at the external electrode length, discharge power, voltage and frequency of 15 cm, 268.92 W, 12 kV and 10 kHz, respectively. However, the maximum efficiency of 7.23% is achieved at the external electrode length of 15 cm, applied voltage of 6 kV, pulse repetition frequency of 0.9 kHz and discharge power of 4 W. Furthermore, at this condition, due to low temperature of discharge zone very little amount of solid carbon was observed on the inner electrode surface of the reactor.