Wet electrostatic precipitator and related methods
AssigneeRSR Technologies, Inc.
InventorsTimothy W. Ellis, Henry V. Krigmont
Life of this patent
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Abstract
An emissions reduction stack comprises a conditioning section, collector section utilizing a Wet Electrostatic Precipitator (WESP), and output section. A chemically active aqueous stream is introduced into an incoming process stream in order to saturate the stream and produce a fog stream wherein water is condensed on the surface of particulates. The process of condensation increases the efficiency of the particulate filtration process conducted by the WESP.
Claims28
An apparatus to reduce emissions, the apparatus comprising:
- a stack housing having a lower and upper end;
- an inlet at the lower end to receive a process stream;
- a first mechanism to introduce a first aqueous stream into the process stream, the first mechanism being located adjacent the inlet;
- a media bed located above the inlet;
- a second mechanism to introduce a second aqueous stream into the process stream, the second mechanism being located above the media bed;
- an expansion area located above the second mechanism;
- a wet electrostatic precipitator located above the expansion area;
- and
- an outlet at the upper end to release the process stream.
A method to reduce emissions, the method comprising the steps of:
- (a) receiving a process stream into a lower end of a stack housing, the process stream comprising a gas;
- (b) introducing a first aqueous stream into the process stream, thereby producing a saturated process stream;
- (c) passing the saturated process stream up through a media bed;
- (d) introducing a second aqueous stream into the saturated process stream;
- (e) passing the saturated process stream up into an expansion area;
- (f) condensing water on a surface of a particulate in the saturated process stream, thereby creating a fog stream;
- (g) passing the fog stream up into a wet electrostatic precipitator;
- (h) removing the particulates from the fog stream, thereby creating a filtered stream;
- and
- (i) releasing the filtered stream out of an upper end of the stack housing.
An apparatus to reduce emissions, the apparatus comprising:
- an inlet to receive a process stream;
- a first mechanism to introduce a first aqueous stream into the process stream;
- a media bed;
- a second mechanism to introduce a second aqueous stream into the process stream;
- an expansion area located above the second mechanism;
- a wet electrostatic precipitator;
- and
- an outlet to release the process stream.
A method to reduce emissions, the method comprising the steps of:
- (a) receiving a process stream into a housing, the process stream having particulates therein;
- (b) condensing water onto a surface of the particulates, thereby creating a fog stream;
- and
- (c) passing the fog stream through a wet electrostatic precipitator, thereby filtering the particulates from the fog stream.
Dependencies are inferred from the claim text.