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I don't think that it's because a leakage on feed/bottom exchangers. It looks more like to my mind, that there is a problem with liquid/vapour exchanges on the trays. Too much liquid because the feed is heavier (less light compounds than design)than expected. I mean that the there is almost no...

Mulitin, we never got a good H2S content in the naphtha since plant start-up. And never arrived to have a reflux flow.

We got an air cooler to condense the gas at the top of the column. Here an analysis of the reflux dum gas: H2 29.6 H2S 54 C1 1.86 C2 6 C3 5.2 i-C4 0.74 n-C4 1.7 i-C5 0.5 n-C5 0.4

sshep: It is a total reflux column, there are no liquid distillate out of the reflux drum, only the light vapour compounds (mainly H2S, C3,C4) go after to a LP amine absorber. All the liquid condensed (if there were some or enough) goes back to the column.

To mbeychok: Pressure and temperature of the reflux drum are 7.5 barg and 60°C. We think that the amount of light compounds as C4-C5-C6 in the naphtha is not sufficient as we are running at low temperatures in the reaction section. And so, the level build up in the reflux drum is very slow. To...

Hello, I have a question about a naphtha stabilizer which processes wild naphtha coming from a gasoil hydrotreater to remove H2S and control naphtha RVP. Our problem is that since the beginning we do not have any reflux and so the naphtha is not stabilized. It's probably due to a lack of light...