Coking vent tower bottom oil problem
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This post was last edited by chengkang on 2009-12-22 21:55 The bottom oil of the coking vent tower has a large viscosity and is generally used as a device for discharging heavy dirty oil. How will each unit deal with it later?
Sedimentation and dehydration, through refining in the form of quenching oil, or directly returning to raw materials.
Can the water come out? Has it actually been done? Please go deeper, thank you
In the irrigation area, the heavy oil in the upper layer is dehydrated and refined. This part of oil and water can easily form oil-in-water or water-in-oil situations, and it is difficult to separate the two using ordinary dehydration methods. At present, our factory adds reverse phase demulsifier before entering the irrigation area, and the effect is pretty good. However, one disadvantage is that the price of the additive is relatively high, which increases the production cost.
It is recommended to enter the atmospheric and vacuum pressure equipment for refining, and part of it can also be put into the fractionation bottom.
If you have the conditions, you can visit the coking unit of Huizhou Refinery. Their vent tower bottom oil is sent to the coke tower to make quenching oil. The process and equipment are different from the vent tower designed by SEI. It is of great value to refer to.