80A
INDUSTRIALANDENGINEERING
CHEMISTRY
Vol. 39, No. 12
HIGH VACUUM ROTARY IN
,
ι—OUT -CONDENSER
COOLANT
CENTRIFUGAL CONDENSER DRIVE MOTOR COLD TRAP OUT OUT
TO PUMPS
High fractionating capac ity under High Vacuum creates new possibilities jor the separation of liquids of high boiling point.
IN
CONDENSER WATER
COLUMN
HEATER
TO
PUMP WETTEO WALL COLUMN
PRODUCT
RECEIVER-
ππτνττππ ROTATING CONDENSER
-POT HEATER
The unique
principles of the centrifugal condenser type still are illus trated above. Rising vapor from the pot condenses on the cooled rotating cylinder. Condensate is then hurled off the condenser surface by centrifugal force and re-vaporized from the heated column. This cycle is repeated many times as the vapor moves up the annular space between the column and condenser, setting up a concentration gradient, with the more volatile com ponents at the top where they are removed. For the first time, equipment of great fractionating ability has been
December 1947
INDUSTRIAL
AND E N G I N E E R I N G
CHEMISTRY
81 A
FRACTIONATING STILL
7or the first time, close fractionation under J-ligh Yacuum, comparable to the performance of packed columns, is possible.
evolved without introduction of the usual packed column with high impedance to gas or vapor flow. The tremendous industrial potentialities of this new processing tool can only be realized when research chemists have had an opportunity to apply it to their problems. A laboratory unit is now available for research purposes. Inquiries for license arrangements for commercial operation are invited. For f u r t h e r details, please write National Research C o r p o r a t i o n , Cambridge 42, Massachusetts. HIGH
VACUUM
FOR
INDUSTRY
NATIONAL RESEARCH CORPORATION
Vacuum
ENGINEERING DIVISION
