Effect of ultrasonic waves on dissociation kinetics of tetrafluoroethane (CH 2 FCF 3 ) hydrate

Hong, Hye Jung; Ko, Chang Ho; Song, Myung Ho; Lee, Sang-Yong; Seong, Kwanjae

doi:10.1016/j.jiec.2016.07.021

Cited by 15 publications

(9 citation statements)

References 24 publications

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“…Duhon and Campbell [32], Chen [33] as well as Fairbanks and Chen [34] all conducted studies to demonstrate the enhancement of oil displacement from water by using ultrasonic acoustic technology. Experimental studies conducted by Miura et al [35], Tsuyuki et al [36], and Hong et al [37] investigated the effect of ultrasonic waves on hydrate-bearing sediments. The details of each study are included in Sect.…”

Section: Ultrasonic Wavesmentioning

confidence: 99%

“…Radio waves lie in the frequency range of 3 kHz to 300 GHz [43]. The heating bands used commonly in the industry include 6.780 MHz, 13.560 MHz, 27.120 MHz, and 40.68 MHz [36,37]. Radio frequency (RF) heating happens due to dielectric losses [44] occurring inside the material.…”

Section: Radio Wavesmentioning

confidence: 99%

“…Microwaves perform dielectric heating [51]. Hence, to determine the effectiveness of microwaves for heating a particular material, a so-called dissipation factor or loss factor, tand = e /e , is calculated, where e is the dielectric loss factor, e is the dielectric constant [51] (indicative of the polarizability of molecules in a given electric field) [37,38]. In general, the dielectric constant depends strongly on the temperature.…”

Section: Theoretical Conceptmentioning

confidence: 99%

“…The research aimed at increasing gas consumption during the hydrate for- The results showed that maximum gas consumption occurs when 150 W power is applied at 0.5 K, i.e., gas consumption increases four times than without ultrasonic irradiation. Hong et al [37] conducted comparative experimental studies for ultrasonic waves and an equivalent amount of heat energy. Specifically, ultrasonic irradiation was divided into two ranges: high sonic and mid sonic range.…”

Section: Ultrasonics-based Hydrate Dissociationmentioning

confidence: 99%

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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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Section: Ultrasonic Wavesmentioning

confidence: 99%

Section: Radio Wavesmentioning

confidence: 99%

Section: Theoretical Conceptmentioning

confidence: 99%

Section: Ultrasonics-based Hydrate Dissociationmentioning

confidence: 99%

See 2 more Smart Citations

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

Khan

Misra²,

Majumder

et al. 2020

ChemBioEng Reviews

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“…Thermal stimulation is used to investigate the kinetics of hydrate dissociation. 39−42 Depressurization is applied to explore gas hydrate exploitation and its geological effects. 43−50 Both thermal stimulation and depressurization achieve hydrate decomposition by adjusting the temperature and pressure.…”

Section: Introductionmentioning

confidence: 99%

Cyclic Formation Stability of 1,1,1,2-Tetrafluoroethane Hydrate in Different SDS Solution Systems and Dissociation Characteristics Using Thermal Stimulation Combined with Depressurization

et al. 2019

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Cold storage using hydrates for cooling is a high-efficiency technology. However, this technology suffers from problems such as the stochastic nature of hydrate nucleation, cyclic hydrate formation instability, and a low cold discharge rate. To solve these problems, it is necessary to further clarify the characteristics of hydrate formation and dissociation in different systems. First, a comparative experimental study in pure water and sodium dodecyl sulfate (SDS) solution systems was conducted to explore the influence of SDS on the morphology of the hydrate and the time needed for its formation under visualization conditions. Subsequently, the cyclic hydrate formation stability was investigated at different test temperatures with two types of SDS solution systems—with or without a porous medium. The induction time, full time, and energy consumption time ratio of the first hydrate formation process and the cyclic hydrate reformation process were analyzed. Finally, thermal stimulation combined with depressurization was used to intensify hydrate dissociation compared with single thermal stimulation. The results showed that the growth morphology of hydrate and the time required for its formation in the SDS solution system were obviously different than those in pure water. In addition, the calculation and comparison results revealed that the induction time and full time of cyclic hydrate reformation were shorter and the energy consumption time ratio was smaller in the porous medium. The results indicated that a porous medium could improve the cyclic hydrate formation process by making it more stable and by decreasing time and energy costs. Thermal stimulation combined with depressurization at different backpressures (0.1, 0.2, 0.3, and 0.4 MPa) effectively promoted the decomposition of hydrates, and with the decrease in backpressure, the dissociation time decreased gradually. At a backpressure of 0.1 MPa, the dissociation time was reduced by 150 min. The experimental results presented the formation and dissociation characteristics of 1,1,1,2-tetrafluoroethane hydrates in different systems, which could accelerate the application of gas hydrates in cold storage.

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Study of Kinetics of Tetrafluoroethane Hydrate Dissociation Using NMR Spectroscopy

Koryakina,

Shitz,

Portnyagin

2023

Chem Technol Fuels Oils

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Effect of ultrasonic waves on dissociation kinetics of tetrafluoroethane (CH 2 FCF 3 ) hydrate

Cited by 15 publications

References 24 publications

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

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

Cyclic Formation Stability of 1,1,1,2-Tetrafluoroethane Hydrate in Different SDS Solution Systems and Dissociation Characteristics Using Thermal Stimulation Combined with Depressurization

Study of Kinetics of Tetrafluoroethane Hydrate Dissociation Using NMR Spectroscopy

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