Issues regarding oil withdrawal during the shutdown of catalytic fractionation
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How is heavy oil currently removed from catalytic fractionation systems? Do I still need to wash it with water? If it is washed, where does the oil and water resulting from that washing go (with environmental regulations being so strict these days)? Discussion is welcome; it earns extra points.
Inspection and maintenance are easier after washing; the oily wastewater resulting from washing is discharged into the oily wastewater pipeline system, where it is treated by an oily wastewater tank for oil separation.
Heavy oil washing? It has not been washed; for maintenance, use a steam tower. Once oil is detected in the water discharged by the pump at the bottom of the tower, it should be sent to the reject line and returned to the raw material tank
We still use water washing, and the water used for washing is discharged into the oily wastewater pipeline network to the wastewater treatment plant
Is the steam tower discharge empty? The exhaust is full of oil!
Should the heavy oil pipeline and distillation tower be washed with water? Just your steam towers and pipelines?
On our end, for the distillation tower washing, we first perform steam purging, then introduce steam and use a washing tower; the water is discharged into a sewer system and sent to the wastewater treatment plant
This post was last edited by Refiner on 2019-4-7 09:11. This time, we first removed the oil; after that, instead of using steam for cleaning, a special agent was used for water washing, which resulted in excellent cleanliness – the heat exchangers and towers were as if they had just been overhauled, which is really great