Distillation column pressure fluctuations
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The crude benzene distillation tower in our facility has been experiencing significant pressure fluctuations recently, and the level of heavy components at the tower top is above the acceptable limit. We are seeking solutions The raw material is crude benzene; the composition of the raw material and other operating conditions of the tower remain largely unchanged!
{:3_55:} Regarding the issue of unstable pressure, there’s no other solution; unstable pressure can easily lead to flashing and material leakage
It just can’t be resolved right now; we can only wait until maintenance stops to check if the tray is blocked.
{:3_47:} If it’s vacuum distillation, check whether there is liquid material in your vacuum pipeline
This post was last edited by *amingteda on 2016-12-19 08:47: 1. Is there any blockage inside? 2. Is there any non-condensable gas in the feed, preventing cooling? 3. Is the steam supply to the reboiler stable? 4. Is the amount of condensation sufficient?
We have had similar problems as well; the first two times it was due to an excess of light components in the system, and later it was because liquid was being drawn into the vacuum system
There are fluctuations in column pressure and the level of heavy components at the top of the column; other conditions remain unchanged. I believe this is caused by blockages in your trays. It is recommended to operate at reduced load to check whether the conditions at the top of the column are satisfactory.