Solve a strange phenomenon
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In our facility, the top pressure of the stabilizer tower is controlled using a thermal bypass system to maintain stability. There is a reflux tank, and the level in this tank sometimes rises suddenly, going from 20 to 60 within about 2 minutes. At first, we thought it might be a problem with the instrument readings; however, after checking both the instruments and the actual conditions on site, we found that indeed a large amount of water appeared in such a short time. It’s strange, as this phenomenon doesn’t occur frequently, but it has happened several times already. We hope experts can provide some guidance!
1\ There is indeed water in the stabilizer tower feed; the water content in the feed can be checked and analyzed； Appropriately reduce the water injection volume for rich gas ； Enhance the dehydration of the condensate tank, and appropriately raise the tank liquid level to increase the time for water to settle and separate ； Do not close off the thermal bypass at 2; if it is closed, this area will serve as a space for water to settle. When pressure regulation is needed, fresh water will enter the return tank, causing the liquid level to rise instantly. Personal opinion, for reference only!