Scrubber and method utilizing wetted slotted screens for removin

Details Scrubber and method utilizing wetted slotted screens for removin Scrubber and method utilizing wetted slotted screens for removin

1979-11-13

1981-02-10

Prunner, Kathleen J.

Gas separation

With nonliquid cleaning means for separating media

Solid agent cleaning member movingly contacts apparatus

55220, 55418, 261111, B01D 4706

Patent

active

042499208

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 preferably 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 inside 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 captured 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 retrofitted to existing scrubbers to improve their performance and lower their operating costs.

REFERENCES:
patent: 3375058 (1968-03-01), Petersen et al.
patent: 3599398 (1971-08-01), Jaeger

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