We have a preflash drum at our CDU, but it operates at 9 kg, where there is no vaporization. the top line of the drum is connected to the flash zone of the atmospheric column. we are now reducing the pressure of the preflash drum in order to get the light component directly to the atm column. Is there a lower limit for the pressure, or any criteria that should be kept in mind when reducing the pressure?
Thank you for your replies.
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