A Comparison of Methane Hydrate Decomposition Using Radio Frequency Plasma and Microwave Plasma Methods

Rahim, Ismail; Nomura, Shinfuku; Mukasa, Shinobu; Toyota, Hiromichi

doi:10.1615/ihtc15.pls.009897

Cited by 3 publications

(7 citation statements)

References 12 publications

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“…The gas yield from methane hydrate decomposition by the argon plasma jet concurs with the previous results [9], [10], for which hydrogen (H 2 ), carbon monoxide (CO), carbon dioxide (CO 2 ), and methane (CH 4 ) were the main products. However, some hydrocarbon molecules such as C 2 H 2 and C 2 H 4 were not detected.…”

Section: Methane Hydrate Decomposition By Rf Argon Plasma Jetsupporting

confidence: 90%

“…Plasma irradiation time recorded until the entire amount of methane hydrate dissolved, and the generated gases collected by the water displacement method. By this method, generated gas caught from the exhaust tube connected to the reaction vessel by displacing the gas above the liquid [6], [10]. Analysis of the gas content from the decomposition of methane hydrate was performed using a gas chromatograph (Shimadzu 8A), which argon as the carrier gas under a flow rate of 34 mL/min and a head pressure of 600 kPa.…”

Section: Argon Plasma Jet Irradiation For Methane Hydratementioning

confidence: 99%

“…(3) to (8) were not completely satisfied, due to an insignificant amount of CH 4 that remained inside the reactor vessel. In the initial process, methane hydrate dissociation (MHD) reaction produced CH 4 and H 2 O [9], [10]. Then the release of CH 4 reacted with the water that turns into steam by the plasma simultaneously decomposed to yield H 2 , CO, and CO 2 by the reaction of steam methane reforming (SMR).…”

Section: Methane Hydrate Decomposition By Rf Argon Plasma Jetmentioning

confidence: 99%

“…However, under the condition of high pressure, the electric field that required to stimulate the discharge is fairly high [12]. Thus, a suitable method is required to produce hydrogen under critical conditions since methane hydrates are stable only at such conditions [9], [10].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Application of Argon Plasma Jet for Methane Hydrate Decomposition by Radio Frequency Irradiation

Rahim

Nomura

Mukasa

et al. 2017

International Journal on Advanced Science, Engineering and Information Technology

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Abstract-In this study, decomposition of methane hydrate using argon plasma jet investigated in the pressure range of 0.1MPa to 2.0MPa. The plasma generated under the high-pressure condition, which is difficult to achieve when using radio frequency (RF) plasma in the liquid method. By using emission spectrometer analysis, the excitation temperature is found to increase as the gas pressure increases, whereas, it decreases as the argon flow rate increases. During the process of plasma irradiation, the required essential reactions for methane hydrate decomposition, such as methane hydrate dissociation (MHD), steam methane reforming (SMR), and methane cracking reaction (MCR) were not completely satisfied due to an insignificant amount of methane. The gas chromatography analysis confirmed that the methane cracking reaction (MCR) was only occurred to generate hydrogen and the C (s) , due to the absence of C 2 H 2 and C 2 H 4 as the byproducts. In comparison with the other primary reactions of methane hydrate decomposition, steam methane reforming reaction became dominant in converting methane into hydrogen. Although the hydrogen production efficiency is less than that of radio frequency plasma in liquid, the reduction of CO 2 by the thermal decomposition of Teflon from CO making it possible is considered as an advanced promising technique in the future.

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Section: Methane Hydrate Decomposition By Rf Argon Plasma Jetsupporting

confidence: 90%

Section: Argon Plasma Jet Irradiation For Methane Hydratementioning

confidence: 99%

Section: Methane Hydrate Decomposition By Rf Argon Plasma Jetmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Application of Argon Plasma Jet for Methane Hydrate Decomposition by Radio Frequency Irradiation

Rahim

Nomura

Mukasa

et al. 2017

International Journal on Advanced Science, Engineering and Information Technology

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“…Rahim et al. conducted experimental studies using MW and RF in liquid plasma for methane hydrate dissociation. The studies aimed at devising a method to extract hydrogen from methane hydrate, thereby leaving solid carbon lying in the reservoir.…”

Section: Hydrate Dissociation Using Electromagnetic Radiationmentioning

confidence: 99%

Hydrate Dissociation Using Microwaves, Radio Frequency, Ultrasonic Radiation, and Plasma Techniques

Khan

Misra²,

Majumder

et al. 2020

ChemBioEng Reviews

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In this work, a comprehensive review of technologies employing radiation sources such as microwave, ultrasonic, and radio frequency (RF) on gas hydrates is presented. The characterizing parameters of radiation, such as frequency, wavelength, and power are highlighted for the compiled studies. In addition, characterizing parameters like hydrate dissociation rate, irradiated microwave power, complete dissociation time, reaction paths and mechanisms, differential pressure and temperature of gas hydrates during the experiments are also reported. Moreover, the work also describes the basic concept behind the working of the different wave forms such as microwaves, ultrasonic, RF wave and plasma for hydrate dissociation.

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Spectroscopic Measurement of High Argon Jet Plasma Flow Rate for Methane Hydrate Decomposition

Rahim¹,

Amaliyah²,

Mandra³

et al. 2022

IJDNE

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Methane hydrate is believed to contain a massive amount of potentially extractable hydrogen gas due to methane as the main component. A high-frequency argon jet plasma method has been proposed for decomposing hydrogen content. The excitation temperature of plasma can be directly observed from atomic emission lines. This information is more efficient to characterize the plasma behavior to optimize the decomposition process. In this study, the plasma excitation temperature was determined using spectroscopy and Boltzmann’s plot with a higher argon gas flow rate. An argon gas flow rate varied from 300, 400, 500, 1000, 1500, 2000, 2500, and 3000 mL/min. It flows inside a hollow tube in the counter electrode. A 27.12MHz high-frequency power source of plasma was applied to produce jet plasma at atmospheric pressure. The excitation temperature was observed in the range of 4310K to 5133K. The highest excitation temperature of 5133K was obtained at an argon gas flow rate of 500 mL/min.

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A Comparison of Methane Hydrate Decomposition Using Radio Frequency Plasma and Microwave Plasma Methods

Cited by 3 publications

References 12 publications

Application of Argon Plasma Jet for Methane Hydrate Decomposition by Radio Frequency Irradiation

Application of Argon Plasma Jet for Methane Hydrate Decomposition by Radio Frequency Irradiation

Hydrate Dissociation Using Microwaves, Radio Frequency, Ultrasonic Radiation, and Plasma Techniques

Spectroscopic Measurement of High Argon Jet Plasma Flow Rate for Methane Hydrate Decomposition

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