Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1995-06-07
1996-11-19
Lithgow, Thomas M.
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
210737, 210767, 210770, 210771, 210805, 210251, 159 42, 159 45, 159 471, 23296, 23301, 23304, C02F 104, B01D 2994, B01D 2984
Patent
active
055759238
ABSTRACT:
An improved salt basket for dewatering solids, particularly salts resulting from evaporation of industrial wastewaters. The salt basket system includes a pressurizable vessel having a screen floor situated above a bottom liquid collection head, an inlet for the brine/solids slurry from which solids are to be separated and dried, an inlet for air, an inlet for steam (the latter two inlets may be combined, where convenient), an inlet for solids free feed, and a drain outlet (these two may be combined where convenient into a combination feed/drain connection). Preferably, an automated system for introducing feed brine and for removing the solids product is provided. For safety, a pivotally attached lower door has a hydraulic failsafe closure mechanism and locking safety latches to prevent the door from inadvertently opening. The process control design minimizes exposure of the salt basket interior to supersaturated solutions with precipitating solids therein, thus reducing scaling of the salt basket, by introducing feed brine rather than magma (crystal/concentrated liquor slurry) to the salt basket between crystal harvest cycles.
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Bostjancic Joseph
Jones George R.
Peterson Dan
Solomon Robert L.
Standiford Ferris C.
Goodloe, Jr. R. Reams
Ionics Incorporated
Lithgow Thomas M.
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