Flow and Mixing Pattern of Transverse Turbulent Jet in Venturi-Jet Mixer

Sundararaj, S.; Selladurai, V.

doi:10.1007/s13369-013-0643-9

Cited by 13 publications

(6 citation statements)

References 19 publications

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“…Для создания новых, более эффективных, обладающих струйным эффектом, компактных аппаратов необходимо проведение детальных исследований процессов, протекающих в СГП: дробления жидкости на капли из цельнофакельных форсунок [12,24,25,35], движения полидисперсного капельного потока [40,43,44] и струйного эффекта [1].…”

Section: объекты и методы исследованияunclassified

Dynamic Behavior of Liquid Flow Rate from Nozzles in Jet Scrubbers of Pulp Production

Aniskin¹,

Kurov²

2021

Lesnoy Zhurnal (Forestry Journal)

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It is shown that the modern development of pulp production technology is associated with the development of gas-liquid systems equipment. Such equipment provides the main technological processes of pulp cooking and regeneration of chemical reagents. Furthermore, this equipment, designed to recover chemical reagents and reduce their emissions into the environment, is part of the technological process. The use of scrubbers in pulp production has an advantage over many other industries, since it uses a closed liquor regeneration cycle. Currently, studies of the processes occurring in scrubbers of different types are becoming more numerous and fundamental. This paper is devoted to the development of jet scrubbers. These devices have a number of properties that do not have scrubbers of other types. They do not create resistance to the gas flow in the flue; they have a gravitational property due to ejection. Only jet scrubbers create the necessary conditions for the stability of the gas flow and have a jet effect that allows to significantly increase the efficiency of emissions cleaning. To implement the jet effect and intensify the technological equipment operation it is required to describe transfer processes in jet scrubbers with regard to polydisperse structure of drop flow and features of liquid splitting up into drops by centrifugal-jet nozzles. Scientific works devoted to the problem of realization of the jet effect showed the need to study the dynamics of liquid splitting in centrifugal-jet nozzles, which create a drop-filled jet with a large opening angle. The research purpose is to study the speed of the initial movement of drops in the area immediately after the splitting section of the continuous jet of liquid flowing from the nozzle. A photographic technique with two spark lamps was used for the experiment. At the same time, the distribution of irrigation density was controlled. The results of measuring the distributions of absolute speed of drops and irrigation density were compared with each other and the function of liquid speed distribution in the cross section of the gas-liquid jet of the jet scrubber was determined. Based on the obtained data, a theoretical model was developed to determine the initial speed of drops of centrifugal jet nozzles, an indicator required for the development of new jet scrubbers. The results can be applied to improve the technological processes of pulp production.

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Section: объекты и методы исследованияunclassified

Dynamic Behavior of Liquid Flow Rate from Nozzles in Jet Scrubbers of Pulp Production

Aniskin¹,

Kurov²

2021

Lesnoy Zhurnal (Forestry Journal)

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“…In spite of their simplicity of construction and operation, such devices have not been the subject of such intense research as was the case in other kinds of mixers. Some specific data is known only by its industrial manufacturers and the articles by Sundararaj [4][5][6] remain as the only ones significant in the scientific field (at least concerning liquid-liquid mixing). To provide some more readily available info about such devices was the main motivation behind this paper.…”

Section: Venturi Jet Mixermentioning

confidence: 99%

The mixing hydrodynamics and efficiency of the Venturi jet mixer

2017

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This article presents results of the numerical analysis of performance of the Venturi tube, used and applied as type of static liquid-liquid mixer. The calculations were performed for a binary acetone-benzene system of completely miscible Newtonian liquids. Several variables used to describe hydrodynamics of the Venturi were proposed. The influence of orifice location and inlet velocity on the hydrodynamics and mixing effectiveness is presented. Calculations were performed using CFD methods and the Fluent solver for 2D geometry.

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“…Venturi jet is usually realized by a jet pump to form negative pressure to achieve mixing. 15 The Venturi jetting is becoming the standard for a proportional to complete a mixture of two liquids in the process industry. 16,17 Numerical and experimental studies on mixing behavior of Venturi jet, such as geometry optimization, 18 device design, 19,20 and mixing hydrodynamics, 21 have received considerable attention in recent years.…”

Section: Introductionmentioning

confidence: 99%

“…The Venturi jet was invented by Eric Halliburton to rapidly mix a continuous supply of cementitious grout for cementing oil wells, which is an evolution of the idea of using a simple in-line static mixer obtaining excellent mixing performances. , The Venturi mixing performance was improved by free-stream turbulence and mainstream swirl. Venturi jet is usually realized by a jet pump to form negative pressure to achieve mixing . The Venturi jetting is becoming the standard for a proportional to complete a mixture of two liquids in the process industry. , Numerical and experimental studies on mixing behavior of Venturi jet, such as geometry optimization, device design, , and mixing hydrodynamics, have received considerable attention in recent years.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Polymer Dispersion Systems for Polymer Injection on Offshore Platforms

Wang

et al. 2020

ACS Omega

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Because of the limited space and high cost of offshore platforms, the dispersion and dissolution of the polymer are required to be of high efficiency, which is essential for polymer injection to enhance hydrocarbon recovery. The numerical simulation models of the water–powder mixing process by Venturi jetting and air-mixing were established. The multiphase flow fields in the water jet ejector, water–powder mixing head, and stirring tank were numerically simulated by FLUENT. Then, the distributions of velocity, volume fraction, pressure, and turbulent kinetic energy of each phase were obtained to evaluate the effects of polymer dispersion and the dissolution of the two mixing methods. According to the maximum velocity of the mixture at the Venturi jet, the optimized length of the throat is 25 mm in our models. The results of the air-mixing process show that a 120° angle of support rods has the best effect of water–powder mixing. The results of the present study show that compared with air-mixing, the combination of Venturi jet and the stirring tank can obtain a broader agitation range and more extensive effect on the flow field, which could uniformly disperse the polymer powder into water. This study has a guiding significance for the design of the onsite polymer injection process.

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Flow and Mixing Pattern of Transverse Turbulent Jet in Venturi-Jet Mixer

Cited by 13 publications

References 19 publications

Dynamic Behavior of Liquid Flow Rate from Nozzles in Jet Scrubbers of Pulp Production

Dynamic Behavior of Liquid Flow Rate from Nozzles in Jet Scrubbers of Pulp Production

The mixing hydrodynamics and efficiency of the Venturi jet mixer

Numerical Simulation of Polymer Dispersion Systems for Polymer Injection on Offshore Platforms

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