Concentrating evaporators – Superheating and pressure release – With extruder
Patent
1992-07-31
1995-03-07
Lithgow, Thomas M.
Concentrating evaporators
Superheating and pressure release
With extruder
159 3, 159 62, 159 63, 159 284, 159DIG8, 159DIG16, 159 18, 202173, 202174, 202177, 202187, 203 72, 203 88, 203 90, B01D 126, B01D 116, B01D 122, B01D 306
Patent
active
053954831
ABSTRACT:
A distillation apparatus by flashing and boiling of solution and condensing the resulting steam having a central rotating partitioned brine conduit with coupling to a two-disk centrifugal distributor and a wiping blade system in a chamber having at least one conically shaped wall heated by a condensing steam in a spirally formed conduit, and a surrounding annular spiral condenser. The vertical stacking of such conically shaped evaporators and annular spiral condensers with brine inflow and outflow through a central rotating partitioned tubular conduit make up the desalination tower. The solution flowing through the central tubular conduit to the centrifugal distributor is pressurized by the centrifugal force before flashing through spray nozzles. The flowing liquid film formed on the heated conical surface boils with further enhancement from thinning action due to a rotating wiping pivoting blade system. The vapor formed by flashing and boiling is partly condensed in a surrounding annular spiral condenser by a counter current feed and partly used as a heating steam in a succeeding lower temperature stage. The condensed vapor in the spiral heating conduit and the annular condenser form the pure distillate product and the remaining brine flows downward through slots in the central conduit to the next vessel.
REFERENCES:
patent: 909028 (1909-01-01), Schalitz
patent: 1145728 (1915-07-01), Wiegand
patent: 1799478 (1931-04-01), Peebles
patent: 2210926 (1940-08-01), Hickman
patent: 2290209 (1942-07-01), Rosenthal
patent: 2894879 (1959-07-01), Hickman
patent: 3930958 (1976-01-01), Maruichi
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