How should one make adjustments if the pressure in the distillation tower is low, or if the temperature at the top of the tower is high?
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As the title suggests, does any expert know? Thank you
Learn from *pornographic books, or the operation guidelines in the procedure manuals.
Which specific device is it? What tower? Tackle problems in a targeted manner. The tower pressure is low; is the pressure ahead high? Is the tower top temperature high, with no circulation reflux or top reflux?
For ordinary cracking units, such as fractionation towers, which are the topic of today’s exam, it’s sufficient to think in terms of general principles
Reduce tower pressure; supply nitrogen to stabilize pressure; increase reflux when temperature is high
The tower pressure control system with low tower top pressure should employ proportional control, shutting off the vent and supplying fuel gas； If the temperature at the top of the tower is high, adjusting the reflux flow rate will stabilize it.
With the temperature after cooling remaining unchanged, increase the reflux rate a bit, or raise the temperature after cooling, i.e., the bottom temperature of the tower.