Key control points for electrodialysis desalination
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What should the mixing intensity be before electrodialysis? Is it related to the processing volume? Our system is designed for a pressure range of 20–70 kPa (with a processing volume of 416 t/h), but currently the processing volume is 220 t/h. What should the mixing intensity be in this case?
The mixing intensity in electrodialysis is primarily aimed at ensuring thorough mixing of crude oil and water; it is related to the properties of the crude oil. If the crude oil has properties that make it difficult to mix with water, the mixing intensity needs to be increased, while if it is easy to mix, the intensity can be reduced. Excessive mixing intensity can cause the crude oil to emulsify, whereas too low a mixing intensity results in insufficient mixing between oil and water.
With a low processing volume, the mixing intensity of the static mixer decreases, while the residence time of the crude oil in the electric field increases. To ensure desalination efficiency after replacement, the mixing intensity can be appropriately increased without any water remaining after desalination
The current processing rate is 200 t/h, with the mixing strength controlled at 6 kPa; I’m not sure if this is correct
We are now only at half of the designed processing volume, and the mixed pressure difference is gradually increasing; let’s compare the desalination efficiency. You can add me on WeChat or QQ at 45529161; it’s a local refinery in Shandong
It’s very simple; just give it a try and you’ll know