Vertical Wiped Thin-Film Evaporator
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United States of America Patent
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Issued Date -
May 5, 2011
app pub date -
Nov 1, 2010
filing date -
Nov 2, 2009
priority date (Note) -
Abandoned
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Abstract
A vertical wiped thin-film evaporator (WFE) may be bottom fed or top fed. Some embodiments have integral entrainment separation devices. Some embodiments are configured with replaceable rotor blade cartridges to facilitate experimenting with different blade configurations, blade pitches and directions (up or down) of thin film displacement for various modes of operation. Some embodiments can be operated in either co-current or counter-current modes, without requiring modification to their “overheads” (entrainment separation, condensing and vacuum) systems. Some embodiments include a variety of feed nozzles and/or a variety of “bottoms” nozzles. The available nozzles provide flexibility in operating the device, such as selecting a mode (top feeding or bottom feeding) of operation or co-current or counter-current vapor extraction.
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