Liquid purification or separation – Flow – fluid pressure or material level – responsive – Maintaining stream pressure or flow
Patent
1992-12-29
1994-11-29
Drodge, Joseph W.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Maintaining stream pressure or flow
2101952, 2102572, 210511, 422 69, 422101, 422103, B01D 6500
Patent
active
053687256
ABSTRACT:
Apparatus for stop flow membrane probe analysis which apparatus is especially suitable for on-line analysis, the apparatus necessarily including five parts. The first part is a reservoir for containing an extractant. The second part is a flow control unit, being a pump or valve, the flow control unit connected to the reservoir, the flow control unit being of the type that can be turned on and off. The third part is a flow through membrane probe, the flow through membrane probe being connected to the flow control unit. The fourth part is a detector, the detector being connected to the flow through membrane probe. The fifth part is a switch for turning the flow control unit on and off so that the apparatus can be used for stop flow analysis. Preferably, the detector is also connected with the reservoir so that the extractant flowing through the probe and detector can be. recycled back to the reservoir. The probe is immersed into a process stream. A component of interest of the process stream permeates across the membrane into the extractant to be detected by the detector.
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Bredeweg Robert A.
Yalvac Engin D.
Drodge Joseph W.
Stevens Timothy S.
The Dow Chemical Company
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