The three phase decanter centrifuge can be used for oil tank bottom cleaning sludge treatment, relatively, we can use 1 unit of 2 phase decanter centrifuge with 1 unit of disc separator to instead of it. How to select it?
3 phase decanter centrifuge, the cost is cheaper compared with using 1 unit of decanter centrifuge plus 1 unit of disc separator. But for the treatment result , 1 unit of decanter centrifuge + 1 unit of disc centrifuge is better, also the application range is also much wide than 3 phase decanter centrifuge.
To ensure the separation process of 3 phase decanter centrifuge, the user should confirm that the solids content is less than 10%, and the oil content is higher than 10%, otherwise the separation result will not be good, as the high content solids will block the screw easily, and the less oil will lead the liquid – liquid separation very difficult.
The 2 phase decanter centrifuge can separate the solids with liquid efficiently by using with chemical dosing unit, the prepared chemicals are feed to decanter centrifuge , at the same time, the decanter centrifuge feeding pump also feed the sludge to decanter centrifuge, they mixed well in the feed tube , so that the suspend solids will be accumulated well and will be easily separated out of the fluids, only left very few fine solids( less than 3%) and the solids size is very small, then it will be feed to disc separator, for oil and water separation.
We have 3 models of 3 phase tricanter for option, GNSX-350 with designed capacity 5m3/h, the lubrication method is by grease, GNSX-450 with designed capacity 10m3/h, GNSX-520 with designed capacity 15 m3/h, which the lubrication method is by oil pump. For more information, pls contact with GN solids control.