Combination of filter and electrostatic separator

B - Operations – Transporting – 03 – C

Patent

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Details

B03C 3/155 (2006.01) B03C 3/80 (2006.01)

Patent

CA 2302690

A device and method for controlling particulate air pollutants of the present invention combines filtration and electrostatic collection devices. The invention includes a chamber housing a plurality of rows of filter elements (24). Between each row of filter elements (24) is a grounded plate (26). Between the grounded plates (26) and the filter elements (24) are electrode grids (28) for creating electrostatic precipitation zones between each row of filter elements (24). In this way, when the filter elements (24) are cleaned by pulsing air in a reverse direction, the dust removed from the bags will collect in the electrostatic precipitation zone rather than on adjacent filter elements (24).

Cette invention concerne un dispositif et un procédé qui permettent de limiter la quantité de polluants particulaires dans l'air, et qui combinent des dispositifs de récupération électrostatiques et de filtration. Ce dispositif comprend une chambre qui renferme plusieurs rangées d'éléments filtres (24). Entre chaque rangée d'éléments filtres (24) se trouve une plaque (26) qui est mise à la masse. Entre les plaques mises à la masse (26) et les éléments filtres (24) se trouvent des grilles d'électrodes (28) qui vont créer des zones de précipitation électrostatiques entre chaque rangée d'éléments filtres (24). Ainsi, lorsque les éléments filtres (24) sont nettoyés en envoyant de l'air pulsé dans le sens inverse, la poussière éliminée des sacs va s'accumuler dans les zones de précipitation électrostatiques plutôt que sur les éléments filtres (24) adjacents.

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