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Evaporation is commonly used to concentrate dissolved solids in a liquid feed stream and produce pure water vapor. In the process below, heat for the
Evaporation is commonly used to concentrate dissolved solids in a liquid feed stream and produce pure water vapor. In the process below, heat for the water vaporization is supplied by condensation of steam in a heating coil passing through in the evaporator. An aqueous slurry at 60.0C and 1.01325 bar containing 5.00wt% dissolved salt is fed to the evaporator, and a liquid containing 30.0 wt\% dissolved salt leaves as product together with a water vapor stream. The internal pressure in the evaporator is 675mmHg absolute, and the vapor (V) and liquid ( L) streams leaving the evaporator are at the same temperature as the evaporator contents. Saturated steam at 10.0 bar absolute enters the heating coil and saturated liquid at the same pressure exits the heating coil, with the latent heat evaporating water in the process. Material Balance Use a balance on salt and a total balance to determine the vapor (V) and liquid (L) outputs for F=1000.0kg/h. V=L=kg/hkg/h
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