Liquid purification or separation – Constituent mixture variation responsive
Patent
1985-04-26
1989-02-14
Sneed, H. M. S.
Liquid purification or separation
Constituent mixture variation responsive
210106, 210109, 210137, 2101951, 210196, 210103, B01D 1300
Patent
active
048044644
ABSTRACT:
A system is provided for feeding a process or bath with a high purity liquid and when needed upgrading or maintaining the purity of such liquid when delivered from a bulk shipping container. In the system, the liquid in which a high degree of purity is desired is pumped through a filter and sensor which detects the level of particulates while maintaining the integrity of the product against contamination. The purity of the liquid is upgraded by pumping, i.e., recirculating, the liquid through a filtration media while sensing the purity, and returning the processing liquid when the desired level of purity is reached. A gas vent filter is used to purify air or vapor passing into or out of the system avoids pressure or vacuum buildup.
REFERENCES:
patent: 3531405 (1970-09-01), Zieversefal
patent: 3908871 (1975-09-01), Gottwald
patent: 4092245 (1978-05-01), Franks et al.
patent: 4151085 (1979-04-01), Nalik
patent: 4282093 (1981-04-01), Haga et al.
patent: 4284501 (1951-08-01), Schon
patent: 4347946 (1982-09-01), Nichols
patent: 4505824 (1985-03-01), Akamine
Cohen Sharon T.
HMC Patents Patents Holding Co., Inc.
Plantamura Arthur J.
Sneed H. M. S.
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