Regarding the processing of Rapa crude oil

Thread Content

Have any of the experts processed Brazilian Raposa crude oil? This is our first time handling this type of crude, and we’ve encountered poor results in electrodialysis desalination – the salt content after desalination remains around 10–14 milligrams per liter. The produced water turns black, with iron ion levels of 43 milligrams per liter and chloride ion levels of 979 milligrams per liter. In the initial produced water, the chloride ion level was only 73 milligrams per liter. The current adjustments involve increasing the amount of water used in electrodialysis and enhancing the mixing intensity; currently, the mixing intensity is 78 for stage 1, 45 for stage 2, and 80 for stage 3. The intensity for stage 2 hasn’t been increased further due to issues with the interface detection and monitoring. We have also increased the dosage of demulsifiers. The water separation works well, but salt removal isn’t effective. To address the problem with the produced water, we have increased the dosage of neutralizing agents – it’s now three times the previous amount – as well as the amount of water injected at the top of the tower, which has nearly doubled compared to before. Yet the results are still not satisfactory. Do any of you have any good suggestions or solutions? ?