Simulation and research of factors affecting aerodynamic indices of the gas purification process

Усманова, Р. Р.; Zhernakov, V. S.

doi:10.18287/1998-6629-2014-0-1(43)-173-180

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“…Методы Одним из перспективных фильтровальных материалов для очистки высокотемпературных дымовых газов от твердых частиц являются перфорированные фильтровальные перегородки (рисунок 1), имеющие ряд особенностей применения и действия. В механике аэрозолей степень очистки  рассматривают как функцию нескольких величин эффективности, отражающих действие различных физических эффектов, называемых механизмами улавливания частиц дисперсной фазы [1,3,[5][6][7][8]. Осаждение твердых частиц дымовых газов при их улавливании с помощью фильтровального материала осуществляется под действием механизмов инерции, диффузии, зацепления, гравитационного осаждения, электрических сил и турбулентной миграции (диффузии) [6]:…”

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Specificity of separate dispersed phase particles from flue gas flows by perfo-rated filter barrier

Protsko

Panov

Shipilova

et al. 2022

Vestn. Voronež. gos. univ. inž. tehnol.

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The vector of industrial development at the present stage is associated with a further increase in energy needs, which is associated with the modernization of existing and the development of new energy-efficient generating equipment. A significant share in the energy balance is still occupied by power plants that use fuel combustion and have significant environmental costs. The results of a theoretical and experimental study of the mechanisms of trapping flue gas particles of power plants by perforated filter baffles in order to reduce the load of emissions on the atmosphere are presented. Formulas for calculating the trapping coefficient under the action of various particle trapping mechanisms are systematized and proposed. The dominant role of the inertial trapping mechanism (?Stk) at the beginning of the filtration process and the gearing effect (?R) in the subsequent stage is determined. The issues of formation of the sediment layer require taking into account the adhesive properties of materials (parameter T) and the introduction of an effective Stokes coefficient (Stkeff). A special role is noted for increasing the efficiency of deposition of flue gas particles under the action of an electrostatic field (?E). In the future, the obtained research results can be used in the development and design of combined gas cleaning devices using the combined action of filtration and the action of an electrostatic field.

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