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<a accesskey="3" href="page.php?w=Flash_evaporation&amp;p=2">3.Next</a>
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<p><a href="page.php?w=Image%3AVap-Liq_Separator.png">thumb</a><b>Flash evaporation</b> (or <b>partial evaporation</b>) is the partial vapor that occurs when a <a href="page.php?w=Boiling_point">saturated liquid</a> stream undergoes a reduction in pressure by passing through a <a href="page.php?w=thermal_expansion_valve">throttling valve</a> or other throttling device. This process is one of the simplest <a href="page.php?w=unit_operation">unit operation</a>s. If the throttling valve or device is located at the entry into a <a href="page.php?w=pressure_vessel">pressure vessel</a></p><p>
<a accesskey="3" href="page.php?w=Flash_evaporation&amp;p=2">3.Next</a>
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