Strip residual volatiles from products that foam and moderate-to-low viscosity
liquids. Artisan’s Evaporator Stripper has the ability to operate at pressures
below 1.0mm Hg absolute and to perform simultaneous heat and mass
transfer, which enhances its stripping performance. It can be added to sparge
gas to further increase stripping efficiency and has the advantages of
no-moving parts, short residence time and multi-stage stripping.
The feed passes through a rising film evaporator to remove the bulk of the
volatiles. The concentrated feed then cascades down over heated or
unheated tube-and-disc trays where the remaining volatiles are stripped by
the rising vapor.
The tube-and-disc trays provide a fresh liquid film at each stage giving new
surface for evaporation and stripping. The extremely low pressure drop
allows operation at very high vacuum. Stripping is accomplished at the lowest
practical temperature as steam or nitrogen may be sparged into the column to
further enhance mass transfer.