Buchi B-295 SE, Руководство по эксплуатации

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3 | Product description BÜCHI Labortechnik AG
10/38 Operation Manual Inert Loop B-295 SE
3 Product description
3.1 Description of function
The Inert Loop B-295 SE is an accessory for BUCHI Spray Drying Instruments, which
enables the safe use of organic solvents in closed loop mode.
The spray drying process in closed loop mode generates an inert gas stream loaded
with solvent vapors. The Inert Loop B-295 SE is used to condense these solvent va-
pors from the gas stream and to monitor its oxygen concentration.
The gas flow enters the Inert Loop B-295 SE and passes the preheat exchanger
where it is cooled before entering the condenser. After solvent vapor condensation,
the gas stream is reheated by the preheater before being returned to the spray drying
process. The excess inert gas leaves the Inert Loop B-295 SE via the exhaust and
the condensed solvent vapors are collected in a closed bottle.
The following spray drying modes are available:
Spray drying mode Solvent composition
Open mode up to 20 % organic solvent
Closed mode with B-295
(When using Ultrasonic Package acces-
sory Inertgas adapter is necessary) between 90 % - 100 % organic solvent
Closed mode with B-295 and B-296
(When using Ultrasonic Package acces-
sory Inertgas adapter is necessary) between 20 % - 80 % organic solvent