Non-Contact Micro-Liquid Mixing Method Using Ultrasound.

Katou, Hajime; Miyake, Ryo; Terayama, Takao

doi:10.1299/kikaib.66.652_3137

Cited by 3 publications

(2 citation statements)

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“…Improving the mixing efficiency in a micro reactor to create a homogeneous mixture of two separate liquid phases is considered an essential technical solution to ensure fuel quality when converting to fuel with low sulfur content [17]. Among the positive methods, ultrasonic mixing technique is considered a non-contact method to create micro and homogeneous structures with very high efficiency [18]. The superior advantages of ultrasonic technology in the blending of multi-phase currents, because the sound stream, local hot spots are created and the formation of the jet is formed at the average compartments of liquid-liquid phase to create cavity-based bubbles [19], [20], resulting in the implosion of the cavitation-based bubbles by shockwaves [21].…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis on the Ultrasound-based Mixing Technique Applied to Ultra-low Sulphur Diesel and Bio-oils

Hoang

Tran

2019

Int. J. Adv. Sci. Eng. Inf. Technol.

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Pollution in the maritime field is considered as such a serious problem that scientists, policymakers, and managers are always urged with a desire to find solutions and strategies one way or another to minimize its negative impacts on the environment and the life. Among the effective solutions, the use of fuels with limited-sulfur content or bio-based fuels has been paid much attention to due to their advantages in the use of marine diesel engines. In the current study, a type of fossil diesel fuel with ultra-low sulfur content (ULSD) was mixed with coconut oil (CO) through the ultrasonic treatment under the changes in volume fraction of as-used fuels, the correlation on viscosity selected the rate mixing between ULSD and coconut oil. After 12 minutes of ultrasound treatment, the highest stability of the ULSD-CO emulsion was achieved correspondingly to 97.8% for a mixing rate of 76%(ULSD):24%(CO) along with the distance of 85mm from the containing-vessel bottom to the ultrasound horn tip. Moreover, the spray characteristics including penetration length and a cone angle of ULSD, CO, and ULSD-CO emulsion were also examined and compared to diesel fuel. The similarity of spray characteristics to diesel fuel, containing ultra-low sulfur content and oxygen content, renewability are considered as some advantages of ULSD-CO emulsion as used for diesel engines aiming to meet the stricter requirements of IMO regulations about the strategies of environmental protection.

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Section: Introductionmentioning

confidence: 99%

Experimental Analysis on the Ultrasound-based Mixing Technique Applied to Ultra-low Sulphur Diesel and Bio-oils

Hoang

Tran

2019

Int. J. Adv. Sci. Eng. Inf. Technol.

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“…In the case of solvent extraction the physical effects are of more importance. The physical effects are a result of cavitation bubbles formation, vibration and collapse, which cause improved internal circulation that enhances the mass transfer resulting in faster and increased conversion [19,[21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Ultrasound assisted liquid–liquid extraction with a novel interval-contact reactor

John

Kuhn

Braeken

et al. 2017

Chemical Engineering and Processing: Process Intensification

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A novel reactor was developed for ultrasound-assisted liquid-liquid extraction. This reactor design entails introducing short contact intervals for the microchannel tubing along the reactor plate channel to have a more focused transmission of the ultrasound. The non-contacted parts of the tubing are still under the influence of the ultrasound as a result of the pseudo-sonicated zone created by the adjacent intervals. The effect of introduction of these elements was first studied by comparing the thermal profiles with and without the presence of intervals and it was found that the maximum intensities along the channel become focused at these intervals. The influence of the intervals on a sonicated two-phase flow was also studied and revealed a repetitive splitting (at the intervals) and coalescence (downstream from the interval) of the emulsified aqueous phase. This dynamic change in the size of the emulsified aqueous phase introduces additional interfacial area and improves the mass transfer between the phases. The number of intervals was varied between three, five and seven. The five intervals showed the best performance. On comparing the five-interval design with a direct-contact design it was shown that the interval design gave the best improvement in yield for the process conditions studied.

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A basic study of noncontact technique for stirring liquid with high-intensity aerial ultrasonic waves

Urakami

Osumi

Ito

2015

2015 IEEE International Ultrasonics Symposium (IUS)

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Non-Contact Micro-Liquid Mixing Method Using Ultrasound.

Cited by 3 publications

References 0 publications

Experimental Analysis on the Ultrasound-based Mixing Technique Applied to Ultra-low Sulphur Diesel and Bio-oils

Experimental Analysis on the Ultrasound-based Mixing Technique Applied to Ultra-low Sulphur Diesel and Bio-oils

Ultrasound assisted liquid–liquid extraction with a novel interval-contact reactor

A basic study of noncontact technique for stirring liquid with high-intensity aerial ultrasonic waves

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