Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Patent
1984-03-29
1985-04-30
Adee, John
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
210741, 210778, 210101, B01D 3702
Patent
active
045143064
ABSTRACT:
A system wherein suspended solids are separated from liquids by passage through a filter after a precoat of filter aid has been deposited on a filter septum. The subsequent addition of filter aid to the liquid and its deposit on the precoat are so regulated that the filter cake produced maintains a practical specific cake resistance to flow therethrough at a preselected value, even if the concentration of suspended solids varies with time, said value being the ratio .DELTA.R/.DELTA.W, where .DELTA.W is a small increment of filter aid weight fed and .DELTA.R is an incremental increase in cake resistance to flow corresponding to that increment .DELTA.W, both increments being on a per unit of filtration area, and the resistance to flow being the differential pressure across the filter cake divided by the flow rate per unit of filtration area.
REFERENCES:
patent: 2626728 (1953-01-01), Harper
patent: 4118778 (1978-10-01), Strub
patent: 4151080 (1979-04-01), Zuckerman
Adee John
Monarch Wine Co., Inc.
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