B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 1/26 (2006.01) B01D 1/22 (2006.01) B01D 1/30 (2006.01) B01D 3/06 (2006.01)
Patent
CA 2076341
21 ABSTRACT A multi-stage evaporator assembly includes one or more vertical concrete circular towers having a number of vertically spaced, distinct evaporator effects. The effects are separated by demistors. Normally the first effect of a tower is at the bottom and the last effect at the top so that salt water to be evaporated flows downwardly under gravity from one effect to the next, and vapor flows upwardly through the demistors from one effect to the next. Alternatively, every alternate tower may have its first effect at the top and its last effect at the bottom so as to minimize the vapor conduit length from the previous tower. The towers may be partially submerged in the earth to minimize the possibility of damage from earthquakes. The towers are typically associated with a surface condenser, a product flash tank, and a brine flash tank. The product flash tank has a chamber connected to the condensate discharge from each of the effects except the first effect, and the vapor from the flash tanks is returned to the effects to recover the heat value of the flashed fluid.
Elmore Carl L.
Rutter Michael
Bereskin & Parr
Elmore Carl L.
Kamyr Inc.
Rutter Michael
LandOfFree
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