B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
165/34
B01D 47/06 (2006.01) F23J 15/04 (2006.01)
Patent
CA 1135179
"SCRUBBER AND METHOD UTILIZING WETTED SLOTTED SCREENS FOR REMOVING FLYASH FROM FLUE GAS" ABSTRACT Improved scrubber and method for removing particulate matter from hot flue gases, particularly flyash in a sludge incinerator, utilizes a plurality of cylindrical slotted wire screen canisters which are prefer- ably mounted vertically in apertures in a plate in a chamber in which the hot gas moves vertically. The bottoms of the canisters may be closed so that the vertically moving gases will change direction at least twice as they move sideways through the screen slots and then vertically again in- side the screens, or alternatively, the bottoms can be screens also with a baffle plate positioned under them to cause a change of direction of the gases. A spray nozzle in each canister keeps the spaced wires forming the sides and the slots wet so that a majority of the flyash will be cap- tured and washed down the sides of the canisters while additional particles will be captured by the water wash spray inside the canisters. The system is very efficient in particulate collection, uses relatively little water has a very small pressure drop and is quite inexpensive to build since the scrubbing tower can be of a minimal height. The system can also be retro- fitted to existing scrubbers to improve their performance and lower their operating costs.
363402
Macrae & Co.
Uop Inc.
LandOfFree
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