Solvent Recovery: Alternative System

An alternative method of generating a vacuum using a liquid operated ejector. The solvent evaporated from the product is used as the circulated liquid driving the ejector.

There are several advantages with this systems, as follows:

1 The ejector will operate at the vapour pressure of the solvent, without cavitation damage, giving a better end vacuum when the product is dry.

2 A pre-condensor is not required, the vapours are condensed within the ejector by direct condensation.

3 The recovered solvent is “tapped-off” from the circulator pump discharge at 2 Bar pressure eliminating the need for a further solvent transfer pump.

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