Light oil desalting
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For the desalination of heavy oil (with a density greater than 1), should the water come out from the upper part of the desalination tank?
It is mainly aromatics, with a relatively high content of phenols
Is the density of the oil still higher than that of saltwater at the desalination operation temperature?
The electrodesalination and dehydration tanks in refineries are designed with water as the heavier component; if water is to be removed from the upper layer, these tanks must be modified or redesigned. For heavy crude oil, my recommendation is to mix in a certain proportion of light crude oil in order to reduce its density and viscosity; this allows the use of conventional dehydration and desalination equipment. It also improves the efficiency of these processes, but it increases energy consumption to some extent.
If the density is greater than 1, it won’t be that much higher, right? In this case, the density of crude oil is close to that of water, making it difficult to separate oil from water