Advanced hybrid particulate collector and method of operation
AssigneeEnergy & Environmental Research Center Foundation
InventorStanley J. Miller
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Abstract
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. Between each row of filter elements is a grounded plate. Between the grounded plates and the filter elements are electrode grids for creating electrostatic precipitation zones between each row of filter elements. In this way, when the filter elements are cleaned by pulsing air in a reverse direction, the dust removed from the bags will collect in the electrostatic precipitation zones rather than on adjacent filter elements.
Claims54
A method of removing dust from filter elements in a filtration and electrostatic precipitation device having at least one filter element, at least one grounded surface, and at least one electrode surface forming an electrostatic precipitation zone, the method comprising the steps of:
- arranging the at least one filter element, at least one grounded surface, and at least one electrode surface such that the electrode surface is disposed between and separated from the at least one filter element and the grounded surface;
- propelling dust which has collected on the at least one filter element toward the electrostatic precipitation zone;
- and
- collecting the dust on the grounded surface.
An apparatus for the control of particulate air pollutants in a gaseous medium comprising:
- a chamber having inlet and outlet ports for allowing the flow of gases through the chamber;
- at least one filter element disposed within the chamber, the at least one filter element being in communication with the outlet port of the chamber;
- at least one grounded plate disposed within the chamber;
- and
- at least one high voltage electrode disposed between and separated from the at least one filter element and the at least one grounded plate to form an electrostatic precipitation zone between the high voltage electrode and the grounded plate.
A filtration and electrostatic precipitation device for the collection of particulates comprising:
- a housing having inlet ducting to introduce dirty gas to the device and outlet ducting to pass cleaned gas out of the device;
- a plurality of rows of filter elements disposed within the housing, the filter elements being in communication with the outlet ducting of the device;
- a plurality of grounded collection plates disposed generally parallel to the rows of filter elements so that each row of filter elements is separated from adjacent rows of filter elements by at least one of the grounded collection plates;
- and
- a plurality of high voltage electrode grids disposed between and separated from the rows of filter elements and the plurality of grounded collection plates to form a plurality of electrostatic collection areas within the housing.
A method of controlling articulate gas pollutants in a gaseous medium comprising the steps of:
- providing a housing having inlet ducting to introduce dirty gas into the housing and outlet ducting to pass cleaned gas out of the housing;
- providing a plurality of rows of filter elements disposed within the housing, the filter elements being in communication with the outlet ducting of the housing;
- providing a plurality of grounded collection plates disposed generally parallel to the rows of filter elements so that each row of filter elements is separated from adjacent rows of filter elements by at least one of the grounded collection plates;
- providing a plurality of electrodes disposed between and separated from the rows of filter elements and the plurality of grounded collection plates;
- applying a voltage to the electrode grids to form a plurality of electrostatic collection areas between the electrodes and the grounded collection plates;
- directing gas into the housing in the proximity of the electrostatic collection areas;
- and
- filtering the gas by forcing the gas through the plurality of rows of filter elements and through the outlet ducting of the housing.
Dependencies are inferred from the claim text.