B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
165/51
B01D 47/06 (2006.01)
Patent
CA 1060338
TITLE COMBINED WET SCRUBBER-CLARIFIER UNIT ABSTRACT OF THE DISCLOSURE A combined scrubber-clarifier unit is disclosed adapted to remove particulate solids from a gas stream, the unit having improved scrubbing capability. The unit is designed to reduce the tendency of deposits of particu- late solids to build up on interior surfaces of the scrub- ber unit tending to plug the unit. The wets scrubber is mounted atop a scaled sludge-clarification tank, the tank being large enough to provide a retention time of about 30 minutes for the slurry. The scrubber unit is one where- in the particulate-laden gas stream is directed through a verturi and directly impinged against the water held in the sealed sludge-clarification tank. The scrubber unit has a central, hollow chamber therein through which the gases exit from the scrubber unit after passage through the water in the tank. Mounted in the upper portion of the central chamber is a de-mister unit comprised of numerous slanted vanes which impart a swirling motion to moisture-laden gas passing there- through to centrifugally separate the water and residual particulate solids from the gas on passage through the vanes. The water and particulate solids separated by the de-mister are collected and returned to the clarifying tank by a sump and drain pipes. Plugging of the drain pipes and build-up of particulate solids on the vanes of the de-mister unit are prevented by direct spraying of water adjacent the openings leading to the drains and against the vane surfaces at all times. The level of the water in the sludge clarification tank is maintained substantially constant by control means to assure optimum scrubbing capability.
224073
Thiele Frederick W.
Westlake Robert A.
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