Design pressure issues for ethylene glycol multi-effect evaporators
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The design pressure for the tube and shell sides of the multi-effect evaporator for ethylene glycol is positive pressure; however, the condition of full vacuum must also be taken into consideration. For example, if the design pressures for the tube and shell sides are 0.5 (FV)/0.5 (FV), is it necessary to consider a situation where one side is under positive pressure while the other side is under vacuum during the structural design? Could someone who is familiar with this process please provide an answer? Thank you very much
Generally, 3–4 effect evaporation is used, with different operating pressures and thermal coupling.