Oil sludge is one of the most difficult treating material in the oil & gas industry, with many years’ successful experience, GN Solids Control is able to provide more and more oil sludge treatment package system. 
This April, GN Solids Control finished another set 5 m3/h oil sludge treating unit for a Kazakhstan client. GN Solids Control builds standard 2 m3/h, 5 m3/h and 15 m3/h oil sludge treating systems, and GN Solids also able to provide customized turnkey oil sludge treating unit to meet different clients’ demands. 

1.20Ft Pre-mixing Module
Due to oil sludge is not easy to move and has big viscosity with heavy solids, GN Solids Control provides one pre-mixing unit fixed with 2 mud agitators to mix the oil sludge with hot water and chemicals. Along the tank, curve pipes are fixed so it cnan be used to feed hot oil or water. 
After dilution, oil sludge is easy to move by submersible pump into the afterwards shaker separation module.   

2.Shaker Separation Module
GN Solids Control manufactures multiple shale shakers to remove big solids from the liquid. In this 5 m3/h oil sludge treating system, GN Solids provides one double deck shaker so the oil sludge can be treated twice and be removed most of the solids. 
GN Solids Control also builds shaker screens to fit GN shakers, besides GN brands shakers, other world famous brands shakers can also use GN made shaker screens which strictly comply with API RP13C standard. 

3.Decanter Centrifuge and Disc-Separator Module
Decanter centrifuge and Disc-Separator are the two key treating equipment in the oil sludge treating. GN 2 Phase horizontal decanter centrifuge remove most of the solids after treated by GN shaker from the drilling mud, while GN 3 phase disc-separator further treat the clean drilling mud to get oil, water and solids separately.

GN Solids Control is a turnkey solids and liquid separation system provider, many GN tank cleaning equipment and GN oil sludge systems are provide to world wide clients.
Clean mud tank usually takes 4 workers get into the tank and spend 4-5 hours for thoroughly cleaning, but with GN tank cleaning system it easy to reduce the labor work and also save time greatly. GN Solids Control just finished manufacturing of another set automatic tank cleaning unit for an offshore drilling platform. It will be used to clean the drilling mud tank effectively by using 2 high pressure flushing nozzles. Below are the main components in this tank cleaning unit.

1.Automatic Flushing Gun
Equipped with 2 sets of high pressure flushing guns, this tank cleaning unit can use the after cleaned water to flush the offshore drilling mud tank effectively. GN Solids Control standard tank cleaning system is fixed with 1 flushing gun, by customized the discharge port, this GN automatic tank cleaning system can reduce the working time to only half which is around 2 hours.

2.Mud Suction Unit
Mud suction unit is using peristaltic type to suction the tank sludge with a prefilter component. Peristaltic cannot work continuously, but it can successfully move sludge with big solids or high content solids.
3.Mud Clarify Unit
Mud clarify unit is an inclined plate classifier indeed. By mounting dozens SS plates to increase the tough surface, it is able to separate the solids out and discharged by a bottom screw conveyor.
Equipped with one compact chemical dosing tank to provide flocculant into the IPC, finer solids can be removed effectively.

4.Mud Storage and Transfer Unit
After treated clean water is stored in a middle tank, which can be reused for tank cleaning.

5.Waste Cuttings Box
Recovered solids or cuttings can be hold by a waste cuttings box, which is convenient to open by crane of forklift.
This GN automatic tank cleaning system is ATEX certified, and consider working in offshore platform all the above comments are divided into modular units which meet DNC lifting demands.

Decanter centrifuge is one of the main products in GN production line. It is usually used for solid-liquid separation, and some three-phase decanter centrifuges will also be used for liquid-liquid-solid separation. The process of solid-liquid separation or liquid-liquid-solid separation is often encountered in the process of modern industrial production. Therefore, decanter centrifuge plays an important role in modern industrial production.

A typical application of decanter centrifuge is used as sludge dewatering equipment in the process of municipal sewage treatment. The sludge at the bottom of the sedimentation tank in the sewage treatment plant needs to be cleaned regularly to ensure the space of the sedimentation tank to continuously receive sewage. In order to speed up the cleaning and transportation of sludge, the sludge at the bottom of the tank needs to be dewatered. Adding flocculants to the sludge can better make the fine particles in the sludge gather into flocs. After the flocculated sludge enters the centrifuge, the separated clean water will be relatively clear. GN T series dewatering decanter centrifuge is a centrifuge product specially designed by GN for environmental protection water treatment industry, which can be adapted to sludge with high solid content. The screw blade and slag discharge port are protected by tungsten carbide plate or alloy sleeve, which can prolong the service life of the equipment.

Another typical application of decanter centrifuge is to separate fine drilling cuttings from drilling mud in the mud system. The drilling mud treated by centrifuge can be reinjected into the mud system for recycling. The decanter centrifuge in widely used in mud systems of oil and gas drilling, horizontal directional drilling, TBM, and even some construction mud treatment projects.

In order to meet different working conditions or different feeding conditions on site, according to customer requirements, GN can equip the decanter with VFD control cabinet to achieve different treatment objectives by adjusting the speed. At the same time, the control cabinet is also equipped with the relevant control of the screw feeding pump, which can realize the start and stop interlock function of the feed pump and the centrifuge, and improve the safety of field work and the reliability of equipment operation.

For more information about the decanter centrifuges, please contact GN Separation.