Modeling of dust inertial separation by centrifugal and electric field in the installation cyclone-type

Котов, Борис; Hryshchenko, V. O.; Pantsyr, Yu.; Herasymchuk, I.

doi:10.31548/energiya2019.06.014

Cited by 2 publications

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“…Аналізом існуючих способів і технічних засобів, наведених в узагальнюючих роботах [1,2], встановлено високу ефективність використання електричних фільтрів для знепилювання вентиляційних викидів. У роботах [3,4] проаналізовано роботу електроциклона [3] та трубчастих і плоских електрофільтрів [4]; отримано розрахункові залежності для визначення траєкторій руху частинок в закрученому повітряному потоці. У роботі [5] визначено ефективність використання змоченої поверхні корпусу прямоточного циклона.…”

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Electrotechnological complex for dedusting ventilation exhausts heat recovery units in production facilities and units

Котов¹,

Hryshchenko²,

Pantsyr³

et al. 2021

Energy and automation

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Currently, to create a microclimate in the production facilities of agro-industrial production are widely used utilizers of waste heat of ventilation emissions. But the air of such premises is clogged with dust impurities and has a high moisture content, as a result of which condensate falls on the heat-transfer surfaces, and dust sticks to the moistened surface. As a result, the efficiency of heat exchangers is significantly reduced, and the hydraulic resistance increases, which can cause a decrease in air supply. Therefore, there is a need to combat dust in the air supplied to heat recovery units. The most common method of purification of gas streams from solid dust impurities is the deposition of the latter in electrostatic precipitators, to increase the efficiency of which use gravitational moving water film. Currently, there are no mathematical descriptions and calculated dependences for horizontal electrostatic precipitators and electrohydrocyclones. The aim of the study is to formulate a mathematical description of the processes of movement of solid particles in the chambers of the horizontal electrostatic precipitator and electrohydrocyclone. The analysis of the existing systems of heat utilization of exhaust air and influence of dustiness on efficiency of their use is resulted. The possibility of using various systems for dust cleaning of exhaust air in agro-industrial facilities is considered. The technological and constructive scheme of the electrotechnological complex of utilization of heat of ventilating emissions which includes the electrohydrocyclone for clearing of dust of exhaust air is offered. The effect of determining forces, including electric, on the motion of a dust particle in the rotating flow of an electrohydrocyclone is analyzed. Equations describing the motion of a particle in an air rotating flow under the action of an electric field are determined, and mathematical models are compiled to calculate the trajectory of the dust particle. Simplified analytical expressions for particle motion trajectories are presented. Keywords: dust, separation, electric field, cyclone, airflow

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Electrotechnological complex for dedusting ventilation exhausts heat recovery units in production facilities and units

Котов¹,

Hryshchenko²,

Pantsyr³

et al. 2021

Energy and automation

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Justification of the layout and operating mode of a vortex-dedusting device as part of heat recovery units in agro-industrial facilities

Котов¹,

Hryshchenko²,

Hrushetskiy³

et al. 2021

M&EAgri

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Annotation Purpose. Determination of the efficiency of functioning of the centrifugal dust collector of exhaust ventilation air when supplied to the heat exchanger, and the parameters of the dedusting device. Methods. The specificity of the problem being solved determines the use of an analytical method for research, which allows us to consider the general scheme of the process flow, without specifying the dimensional characteristics. The research technique involves the compilation of differential equations of the motion of particles in a swirling air flow and determination of the trajectory of their movement. Results. The possibility and feasibility of using a direct-flow cyclone for dedusting ventilation emissions from an industrial premises before feeding to a heat recovery unit is considered. To assess the efficiency of dust cleaning, a mathematical description of the dynamics of motion of dust particles in a vortex flow of a direct-flow cyclone has been formulated. Analytical dependences are obtained, according to which the trajectories of motion of dust particles in projections onto the transverse and longitudinal planes of the cyclone body are calculated. The formulas obtained make it possible to determine the design and operating parameters of the dedusting device and to estimate the size of particles, the capture of which is provided by the proposed device. Conclusions 1. A rational layout diagram of a heat recovery system for ventilation air of industrial facilities has been determined, which in series connects a once-through cyclone with an impeller and a tube-plate heat exchanger. 2. A mathematical description of the dynamics of the motion of dust particles in a vortex flow has been formulated and investigated, and calculation formulas have been obtained for calculating the trajectories of motion of particles, which are used to determine the design and operating parameters of a direct-flow dust cleaner. Keywords: ventilation emissions, heat exchanger, dedusting of the air flow, direct-flow cyclone, particle trajectories.

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Modeling of dust inertial separation by centrifugal and electric field in the installation cyclone-type

Cited by 2 publications

References 1 publication

Electrotechnological complex for dedusting ventilation exhausts heat recovery units in production facilities and units

Electrotechnological complex for dedusting ventilation exhausts heat recovery units in production facilities and units

Justification of the layout and operating mode of a vortex-dedusting device as part of heat recovery units in agro-industrial facilities

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