Question for assistance: The bottom pressure of the aromatic extraction stripping tower is abnormally high, while the top pressure is normal What’s the reason?
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The aromatic extraction unit in my workshop consists of an extraction tower, a raffinate oil washing tower, a stripping tower, a recovery tower, a water stripping tower, and a solvent regeneration tower. Currently, the pressure at the bottom of the stripping tower is abnormally high at 177 KPa; an alarm is triggered at 180 KPa, while the pressure at the top of the tower is around 90 KPa (relatively stable). The temperature at the bottom of the tower is currently controlled at 163°C. The C8 xylene separation tower has not been started yet, and the composition of the material fed for extraction is too light; operational conditions are being adjusted. What could be the reason for this abnormally high pressure at the bottom of the tower? Please help analyze it! ! ! Thank you!
Use sulfolane! Just started driving? It was normal before, but now it’s suddenly like this