Liquid purification or separation – Processes – Including controlling process in response to a sensed condition
Patent
1979-10-30
1981-06-30
Spitzer, Robert H.
Liquid purification or separation
Processes
Including controlling process in response to a sensed condition
210776, 210794, 210799, 210801, 210807, 210108, 210265, 210266, 210274, 210277, B01D 1704
Patent
active
042761816
ABSTRACT:
A single enclosed chamber includes a lower destabilizing area, a central filtering and coalescence area containing coalescence material, and an upper flotation and separation area. Emulsion is introduced into the lower destabilizing area and is destabilized therein. The emulsion is then passed upwardly into the central filtering and coalescence area. The dispersed phase of the emulsion is attracted to the coalescence material in the form of droplets, and as the emulsion continues to pass upwardly therethrough the droplets grow in size. During passage of the emulsion through the filtering and coalescence material, matter in suspension is filtered from the emulsion. Within the flotation and separation area is located a separation device including a lower convergent portion and an upper divergent portion. The emulsion passes through this separation device, and the coalesced dispersed phase separates from the floats on the top of the dispersion phase within the area of the upper divergent portion of the separation device. The separated dispersed and dispersion phases are separately withdrawn. The pressure difference between the upper and lower sides of the coalescence material is measured as a indication of the degree of retention of mater in suspension within the coalescence material. When this pressure difference reaches a predetermined maximum, indicative of clogging of the coalescence material, the normal separation by coalescence treatment of the emulsion is stopped, and a washing liquid, which may be the emulsion to be treated, and a gas are introduced into the destabilizing area and passed upwardly through the coalescence material, thereby removing the matter in suspension.
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Cordier Michel
Labaquere Herve
Saint-Dizier Gilbert
Degremont
Sadowski David R.
Spitzer Robert H.
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