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.

As the screw conveyor and screw pump manufacturer in China, GN solids control recently shipped one batch of screw conveyors and screw pumps to our client in Africa. These equipments are used for drilling waste management system, the screw conveyor is used to transfer the drilling waste to vertical cuttings dryer, the screw pump is used to feed the decanter centrifuge and flush the vertical cuttings dryer.

A drilling waste management system including a vertical cuttings dryer with flushing pump, a decanter centrifuge with its feeding screw pump, telescopic skid, fluids collection tank, screw conveyor for drilling cuttings transfer, for discharged solids collection and transfer. As the important components of the drilling waste treatment system, the screw pump and screw conveyor’s quality is very important. The client already bought GN decanter centrifuge and vertical cuttings dryer before.

The screw conveyor system is customized according to the site layout, the screw diameter is optional for 10 inch, 12 inch, 14 inch, 16 inch, 18 inch, the screw length for each section is 12ft, the client can select 1 section (12ft ), 2 section (24 ft) , 3 section (36 ft), 4 section ( 48 ft), the screw conveyor can be installed horizontally or slantly ( the installation angle should be less than 45 degree). The inlet port and outlet port can be customized according to their requirement. the manual adjustable speed ensure the feeding rate can be controlled manually, the user can adjust the feeding rate according to vertical cuttings dryer working conditions.
The screw pump fluids touch components are made of wear resistant alloy, the manually adjusted speed can control the feeding capacity to the decanter centrifuge, once the solids content is higher, the user can reduce the feeding to avoid blocking the screw.
If you need screw conveyor and screw pump, pls contact with GN Solids Control.

As a VFD decanter centrifuge and vertical cuttings dryer manufacturer in China, GN solids control recently shipped another batch drilling waste management equipments to Nigeria again. This is not the first order, they repeat purchasing VFD decanter centrifuge and vertical cuttings dryer from GN solids control. The technical configuration is as below:

1.    3 units of GNLW363C-VFD decanter centrifuge,
2.    2 sets of GNCD930F vertical cuttings dryer, according to some of our client, the Oil content in the cuttings can be reduced to below 5%, it can meet some countries disposal regulation, so that they will use the discharged solids for landfill or construction industry.

3.    Telescopic skid and feeding pump, the feeding pump is installed on the telescopic skid, during transportation, the decanter centrifuge and vertical cuttings dryer will be removed for separate shipment.
For rest accessories, such as connection pipeline, fluids catching tank, etc, the user can make it locally according to their layout. Different with GN standard drilling waste management system, which is a skid mounted drilling waste management system for convenient transportation, the separate part of decanter centrifuge module and vertical cuttings dryer module is more flexible, it can be used for different projects.

Except for VFD decanter centrifuge and vertical cuttings dryer, GN solids control also produce the drilling waste transfer system and we can provide customized waste transfer solution. Including screw conveyor, sludge vacuum pump, fluids collection hopper, etc. The screw conveyor is the most common used equipment for drilling waste transfer. It is consist of explosion proof motor, gearbox, coupling, shield, bearing sear assy of driving end, header of driving end, housing, screw shaft, middle bearing seat assy, blind flange, connection plate of the blind flange, inlet, bearing seat assy of the feeding end, header of the feeding end, gland, outlet and drive seat.