| 摘要 |
An apparatus for separating a partially miscible solvent from a contaminated water stream. The apparatus includes a fully enclosed containment vessel having an internal volume bounded by a plurality of walls which define the width, length and height of the internal volume. Devices for feeding the contaminated water, for discharging a solvent rich vapor stream, and for discharging a purified water stream are provided. A dam separates the internal volume into a phase separation zone and a falling film stripping zone with the dam located proximate one end of the internal volume. The dam includes a wall sealably disposed across the entire width of the internal volume and extended upward to a terminal location a distance from the bottom of the internal volume over a portion of the height of the internal volume. In use, the dam determines and maintains a maximum liquid level in the phase separation zone. Any additional liquid added to the phase separation zone results in a film of liquid flowing into the dam over the falling film stripping zone. The falling film stripping zone includes a surface whereon the film of liquid flows toward the device for discharging the purified water. Devices for heating the film of liquid and water contained in the phase separation zone are also provided. The phase separation zone includes a plurality of baffles disposed therein.
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