We are going to heat a solvent (around -12 degrees C) by superheated steam holding 4.3 bar and 185 degrees C. This will be done in a shell and tube exchanger aiming at 33 degrees C for exit solvent temperature. We think there may be concerns about freezing condensate to ice in the exchanger due to minus temperature of solvent. Can we proceed safely by this manner or it is necessary to have positive temperature for the inlet solvent temperature entering the steam heater?
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Jim Grant Forum Moderator 117 Posts
Re: Should we be concerned about freezing condensate in the exchanger?21 February 2012 at 1:29pmThe concern around ice formation is valid, especially if the unit is not properly drained. Arranging the unit in cocurrent flow may also provide some mitigation.