Повышение эффективности очистки воздушного потока от высокодисперсной пыли
Дата
2015
ORCID
DOI
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Видавець
НТУ "ХПИ"
Анотація
Показана возможность применения импульсного коронного разряда для целей коагуляции мелкодисперсной фазы аэрозоля при использовании зарядного устройства с системой коронирующих электродов типа "острие" и заземленного электрода, выполненного в виде расположенной поперек потока запыленного воздуха крупноячеистой сетки. Установлено, что при значительной скважности импульсного напряжения, величина заряда крупных частиц пыли и время действия внешнего электрического поля под воздействием которого осуществляется направленное движение частиц пыли к заземленному электроду и стенкам зарядной камеры значительно меньше чем в поле униполярного постоянного коронного разряда.
Problems concerning intensification of fine dust elimination processes of aspiration flows have been considered in this paper. It has been shown that improved efficiency of fine dust elimination processes may depend upon aerosol charge being performed with the help of a system of corona electrode of “point” type and net-located across dusted air flow where impact charge of coarse dust particles as well as their possible deposition within charge chamber can be available only within a discharge gap in the process of potential impulses effect. Installed that in terms of significant duty ratio of impulse high voltage, charge value of coarse dust particles as well as response time of external electric field effecting ordered dust particle motion to the earthed electrode and charging chamber walls is much less than within a field of unipolar constant corona discharge. Due to nonavailability of external electrostatic forces ordered motion of dust particles to the earthed electrode is neglectable during gap between voltage impulses. However, intensive loss of ions from discharge gap is observed. Further motion of ionized dust and gas flow beyond discharge gap within a charging chamber mostly results in intensive charge of fine particles of aerosol dust at the expense of diffusion of ions to their surface.
Problems concerning intensification of fine dust elimination processes of aspiration flows have been considered in this paper. It has been shown that improved efficiency of fine dust elimination processes may depend upon aerosol charge being performed with the help of a system of corona electrode of “point” type and net-located across dusted air flow where impact charge of coarse dust particles as well as their possible deposition within charge chamber can be available only within a discharge gap in the process of potential impulses effect. Installed that in terms of significant duty ratio of impulse high voltage, charge value of coarse dust particles as well as response time of external electric field effecting ordered dust particle motion to the earthed electrode and charging chamber walls is much less than within a field of unipolar constant corona discharge. Due to nonavailability of external electrostatic forces ordered motion of dust particles to the earthed electrode is neglectable during gap between voltage impulses. However, intensive loss of ions from discharge gap is observed. Further motion of ionized dust and gas flow beyond discharge gap within a charging chamber mostly results in intensive charge of fine particles of aerosol dust at the expense of diffusion of ions to their surface.
Опис
Ключові слова
аэрозоль, коагуляция, электроионизация, электрическое поле, зарядная камера, коронный разряд
Бібліографічний опис
Голинько В. И. Повышение эффективности очистки воздушного потока от высокодисперсной пыли / В. И. Голинько, Д. С. Пустовой // Вестник Нац. техн. ун-та "ХПИ" : сб. науч. тр. Темат. вып. : Механико-технологические системы и комплексы. – Харьков : НТУ "ХПИ". – 2015. – № 36 (1145). – С. 116-121.