Gas separation: processes – Electric or electrostatic field – With addition of solid – gas – or vapor
Patent
1994-07-14
1996-05-21
Chiesa, Richard L.
Gas separation: processes
Electric or electrostatic field
With addition of solid, gas, or vapor
95 71, 96 27, 96 53, B03C 3014
Patent
active
055185258
ABSTRACT:
Method for treating gas or vapor includes an impeller arranged in a duct which draws dusty or fume-laden air through the duct. One or more nozzles are arranged to spray fine droplets of water onto the impeller. Downstream of the impeller, a set of angled collection plates collect the fine water droplets emitted by the nozzle, together with dust or fumes collected by the droplets. The nozzle is connected to a high voltage source, so that the droplets emitted by the nozzle are electrostatically charged. This causes them to attract dust particles and other contaminants. The collection plates are earth, so that the charged droplets are attracted to them, improving the effectiveness of the apparatus. A second, auxiliary spray of fine uncharged droplets is directed over an entrance opening of the duct to prevent ignition of explosive gas or particles outside the duct.
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patent: 5300270 (1994-04-01), Krigmont et al.
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