Question: The time required for electrical desalination and dehydration of crude oil
Thread Content
How long does it take for crude oil to go through the electrodesalination and dehydration process? How and for how long is crude oil mixed with water? Thank you.
The optimal residence time of crude oil in electrodialysis is 2 minutes. The water present in crude oil exists in the forms of water-in-oil and oil-in-water, with water-in-oil being more common. Electrodialysis is also primarily used to remove water-in-oil.
Current electrodialysis technology specifies that the residence time of crude oil in each electrodialysis tank ranges from a few minutes to over 10 minutes. A mixing valve is installed before each electrodialysis tank to ensure that crude oil, water, and desalting agent are mixed evenly before entering the tank for desalination.
The time required for crude oil to undergo electrodesalination and dehydration varies depending on the properties of the oil itself and the method of electrodesalination used. Generally, it is designed to take 2 minutes in a high-voltage electric field, but this can vary depending on the processing volume； The mixing method depends on the type of demulsifier you use: water-soluble ones can be mixed before the mixer, while oil-soluble ones are mixed at the point where crude oil enters the facility; water is added before mixing.