Where does the water injected at the top of the atmospheric and vacuum tower come from?
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Where does the water injection at the top of the atmospheric and vacuum tower come from? Does the water injection into the atmospheric tower come from the condensed water of this system, without using external water (deoxygenated water, or softened water, etc.) to reduce the pressure?
Generally, water injection is from outside. It is recommended to add softened water. Reducing CaMg ions in the water can reduce the formation of scale. Some devices also use desulfurized purified water, which may contain some Fe2+ compared to softened water, which causes certain troubles in analysis and monitoring.
Is there not enough condensed water in this system under normal pressure? Is it possible to use the water in the reflux tank for refilling? Hope the confusion is clear!
It can be re-injected, which is an effective water-saving measure. At the same time, due to the presence of excess amines and corrosion inhibitors in the water, the dosage of neutralizing corrosion inhibitors can be reduced and chemicals can be saved. But at the same time, the reinjection of condensate water has high requirements for neutralizing corrosion inhibitors. It requires that the condensate water cannot be emulsified and have low oil content. If the emulsification is severe, the oil-water separation tank will become more and more serious after reinjection.
There is air blowing at the bottom of the normal pressure tower, and the condensed water at the top of the tower is usually injected back. Can save injection dosage.
I would like to ask my friend upstairs, what about reducing the roof and filling it with water?
Use the water from the oil-water separation tank at the top of the tower to re-inject
The normal and reduced top water injection is similar, and there is not much difference. It is usually a branch of a pipeline, but decompression is relatively easier to emulsify, so you need to pay more attention to whether to reinject water.