Issue with the return location of the feed oil to the catalytic unit
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The raw material self-protection valve orifice plate bypass line of the catalytic unit maintains an excess amount – are you all returning it to the fractionation tower?
Under normal circumstances, it is a reverse fractionation tower.
Under normal circumstances, it is a reverse fractionation tower.
How was it decided to send it back to the fractional distillation tower rather than the crude oil tank?
Generally, in a reverse fractionation tower, this is used to prevent fluctuations in the liquid level of the fractionation tower during emergency shutdowns
In fact, it’s possible to send the fluid back to the refinery tanks and distillation columns; it is generally used to replenish the liquid level or to enable start/stop operations as part of a large-scale circulation system