Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1977-06-06
1979-05-15
Cuchlinski, Jr., William A.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 96R, 210138, 210409, B01D 2324
Patent
active
041546776
ABSTRACT:
An influent stream is passed through a filter bed separating contained particulate material from the mother liquor; the process being carried out until such time as the filter bed can no longer practically sustain further separation operation. A wash step is then commenced in which a wash liquor is passed through the filter bed, washing soluble components sorbed or deposited on the filter bed or in the filter cake. The concentration of soluble salts in the wash liquor is sensed and when the concentration reaches a predetermined minimum level, the wash liquid flow is stopped for a predetermined period of time. The flow is then resumed for a predetermined minimum time period and if the concentration of soluble salts in the wash liquid is, at the end of said minimum time period, not above a predetermined minimum level, the wash step is terminated. Otherwise, the wash step is intermittantly repeated until such time as the aforenoted termination occurs.
REFERENCES:
patent: 3078224 (1963-02-01), Schulze et al.
patent: 3862036 (1975-01-01), Simmons
patent: 3899421 (1975-08-01), Keilin et al.
patent: 4045342 (1977-08-01), Kuster et al.
Cuchlinski Jr. William A.
Parker Sheldon H.
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