Distillation: apparatus – Apparatus – Systems
Patent
1978-02-06
1980-08-12
Bascomb, Jr., Wilbur L.
Distillation: apparatus
Apparatus
Systems
202197, 202236, 202264, 159 3, 159 5, 159 24A, 159 47WL, 159DIG4, 203 10, 203 20, 203 26, B01D 128
Patent
active
042171768
ABSTRACT:
A vapor compression distiller has a vertically oriented cylindrical tank and a heat exchanger having a plurality of groups of heat exchange tubes disposed one above the other. Internal baffling channels vapor through the groups of heat exchange tubes in a serial relation commencing with the vertically lowest group. Feed liquid is distributed from the upper end of the vessel downwardly over the surfaces of the tubes. This causes the evaporation of a first portion of the feed liquid and a condensation of the vapor. The evaporated and unevaporated portions of the feed liquid pass downwardly past the heat exchange tubes with the unevaporated portion collecting in a liquor well at the lower end of the vessel and the vapor passes upwardly along the sides of the vessel heat exchanger and outwardly to a compressor, the outlet of which is connected to the vapor inlet of the system. In a second embodiment, an additional evaporator is disposed below the first wherein the unevaporated feed liquid from the first evaporator is provided as the feed liquid of the second while the vapor withdrawn from and delivered to the second evaporator is connected in parallel with that of the first.
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Aqua-Chem Inc.
Bascomb, Jr. Wilbur L.
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