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Organic solvents with their specific advantages continue to
find wide usage. Whether alcohol, acetone or methylene chloride.
The protection of the environment demands that the emissions from
process plant be drastically reduced by the implementation of appropriate
systems.
Circulation principle
With a circulating system, the solvents are condensed out, the
process gas is super-heated and fed back into the system.
The principle can be combined with all systems and processes and
offers a range of advantages:
- Recovery of solvents
by condensation for re-use or disposal
- Universal application
for all common solvents
- High level of safety
due to the whole system being made inert with N2
Examples of Glatt fluid bed systems with circulation for solvent
recovery
Vacuum principle
Here, the process system is evacuated by means of a vacuum pump
to a working pressure below the LEL (Lower Explosion Limit). The
vacuum pump sucks out the solvent gases and feeds them via a condenser
on the suction and pressure side. Due to the absence of the inert
gas, there is an excellent heat transfer and thus an extremely effective
recovery. In summary:
- Recovery of solvents
by condensation under vacuum
- Universal application
with all common solvents
- High level of safety
operation below the LEL
- Highly effective
due to the absence of inert gases
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