Carbon dioxide reforming of methane to synthesis gas by an atmospheric pressure plasma jet

The conversion of CO2 and CH4 into value-added chemicals is studied in a new geometry of a dielectric barrier discharge (DBD) with multi-electrodes, dedicated to the treatment of high gas flow rates. Gas chromatography is used to define the CO2 and CH4 conversion as well as the yields of the products of decomposition (CO, O2 and H2) and of recombination (C2H4, C2H6 and CH2O). The influence of three parameters is investigated on the conversion: the CO2 and CH4 flow rates, the plasma power and the nature of the carrier gas (argon or helium). The energy efficiency of the CO2 conversion is estimated and compared with those of similar atmospheric plasma sources. Our DBD reactor shows a good compromise between a good energy efficiency and the treatment of a large CO2 flow rate.

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“…18], gliding-arcs [19,20] and plasma jets [21,22]. Low pressure plasma sources can also be used such as microwave discharges [23,24].…”

Section: Note: This Document Is a Pre-print Version You May Use It At...mentioning

confidence: 99%

CO2–CH4 conversion and syngas formation at atmospheric pressure using a multi-electrode dielectric barrier discharge

Ozkan

Dufour

Arnoult

et al. 2015

Journal of CO2 Utilization

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“…Product selectivity, conversion rate of the reactants and the efficiency of the system are three main factors used to determine viability of the process to produce hydrogen or syngas from hydrocarbons. The formula for propane conversion in percent is presented bellow and is well used and accepted in literature [32]:…”

Section: Reaction Performance Evaluationmentioning

confidence: 99%

Non-Thermal Plasma Reactor for Decomposition of Propane to Generate COx Free Hydrogen

Aleknaviciute¹,

Karayiannis²,

Collins³

et al. 2013

JOCET

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Non-thermal plasma reforming unit operating at atmospheric pressure has been developed for converting propane to COx free hydrogen. Argon was used to provide additional electrons and photons for higher reaction rates. A series of experiments have been performed for positive corona discharge at 15 mm inter-electrode distance to study the effects discharge power and residence time. A range of each test parameter was covered, namely, the effect of discharge power in the range of 19 – 35 W and residence time of 60 to 303 seconds. The results analysis shows that both, the discharge power and the residence time, have a positive influence on propane conversion, hydrogen selectivity and energy conversion efficiency. Propane conversion and hydrogen selectivity are both highest at the largest discharge power of 35 W and the longest residence time of 303 s

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“…Thus, NTP have emerged as an alternative technology for activating GHGs. Many of the NTP methods (e.g., radio‐frequency discharge [7], spark discharge [8], glow discharge [9], corona discharge [10], plasma jet [11], gliding arc discharge [12], microwave discharge [13] and so on) have been used for this purpose. Savinov et al.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, NTP have emerged as an alternative technology for activating GHGs. Many of the NTP methods (e.g., radio-frequency discharge [7], spark discharge [8], glow discharge [9], corona discharge [10], plasma jet [11], gliding arc discharge [12], microwave discharge [13] and so on) have been used for this purpose. Savinov et al [7] investigated the reforming process using capacitive radio-frequency at a low-pressure range (0.5-6 kPa), and the conversions of CH 4 and CO 2 could reach 78% and 58% at the specific conditions, respectively.…”

Section: Introductionmentioning

confidence: 99%

Dry reforming of methane by microsecond pulsed dielectric barrier discharge plasma: Optimizing the reactor structures

et al. 2022

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Dry reforming of CH 4 process can convert greenhouse gases into high-value-added fuels and chemicals with its broad application prospects in environmental protection and renewable energy. Non-thermal plasma is considered an effective alternative method because it can activate CH 4 and CO 2 under low temperature and atmospheric pressure. This paper is aimed to optimize the plasma-assisted dry reforming of CH 4 process in a unipolar microsecond pulsed coaxial dielectric barrier discharge by investigating the effects of reactor structures. The results show that the conversions of reactants and the yields of syngas were significantly affected by the reactor structures. Specifically, a multi-stage or foil external electrode and negative polar discharge could promote CH 4 and CO 2 conversions, gas product yields, and energy conversion efficiencies. For different electrodes, the maximal conversions of CH 4 and CO 2 were 20.4% and 14.1%, with an energy conversion efficiency of 4.4% under our experimental conditions. Higher conversions, yields, and energy conversion efficiencies were obtained with lower power input when applying heat insulation measures. CH 4 conversion was promoted to 27.9% with a moderate energy conversion efficiency of 3.8%, but the conversion of CO 2 was only 12% when packing materials into the reactor. The results can provide specific guidance for designing plasma or plasma-catalytic dry reforming reactor.

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Carbon dioxide reforming of methane to synthesis gas by an atmospheric pressure plasma jet

Cited by 20 publications

References 10 publications

CO2–CH4 conversion and syngas formation at atmospheric pressure using a multi-electrode dielectric barrier discharge

CO2–CH4 conversion and syngas formation at atmospheric pressure using a multi-electrode dielectric barrier discharge

Non-Thermal Plasma Reactor for Decomposition of Propane to Generate COx Free Hydrogen

Dry reforming of methane by microsecond pulsed dielectric barrier discharge plasma: Optimizing the reactor structures

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