Method and apparatus for clarifying coke quenching water

Liquid purification or separation – Processes – Separating

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Details

210801, 210268, 210284, 210803, 210804, 210805, B01D 3500, B01D 3704

Patent

active

042409101

ABSTRACT:
A method for clarifying coke quenching water or other waters which are contaminated by solids, with a wide grain spectrum, in an operation in which the fine portions of the solids suspended and carried along with the water are removed from the water by filtration and the clarified water is returned in a cycle, comprising, depositing the water into a filter shaft so that the substances removed from the contaminated water build up in the shaft and themselves form a filter bed, continuing to pass the water through the filter bed from the top to the bottom in a manner so that the velocity of flow of the water in the filter bed decreases constantly and so as to preclarify the water which passes through the bed and subsequently refiltering the preclarified water in a trough basin which rises from the bottom to the top. Thereafter, the refiltered water is directed into a discharge channel from the trough basin which overflows above the basin. During the operation, the bottom of the bed is continuously broken down by mechanical means, such as a screw conveyor, as the top is continuously replenished by directing the solid-containing quenching water into the top of the filter shaft.

REFERENCES:
patent: 2046756 (1936-07-01), Thomas
patent: 3298791 (1967-01-01), Meyer et al.
patent: 3667604 (1972-06-01), Lagoutte
patent: 3767048 (1973-10-01), Prengemann
patent: 3853752 (1974-12-01), Tymoszczuk
patent: 4060484 (1977-11-01), Austin et al.
patent: 4197201 (1980-04-01), Hjelmner

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