Month: March 2020

The mini decanter centrifuge is shipped to South America for solids liquid separation project. The function is to separate the ultra fine solids from the waste water, so that most of the fine solids can be separated out to get qualified liquid, which can be disposal directly or sent to third party waste water treatment facility for further treatment.

There are 2 models of mini decanter centrifuge for option, GNLW223D decanter centrifuge is normally used for diamond core drilling waste water treatment to recover water for reuse, also it can be used for mini oil sludge separation unit. GNLW224E-VFD decanter centrifuge can be used to treat waste water with high viscosity and higher density. The models with same bowl diameter 9 inch, but the bowl length is different. GNLW224E-VFD bowl length is 36.4inch, which is much longer than GNLW223D bowl length 26.4 inch, the waste water can stay longer inside the bowl, the discharged solids is much drier for easier disposal, the treated fluids is more clear, if necessary, proper chemical should be used together to increase the treatment capability. The mechanical separation cut point is 2 microns, by adding chemicals, it can treat solids up to 1 microns.

GNLW223D decanter centrifuge max bowl speed is 4500rpm, the typical speed is 3800rpm, gearbox ratio is 35:1, gearbox torch is 500N.M., max G force is 2492G, typical G force is 1777G. GNLW224E-VFD decanter centrifuge max bowl speed is 5000rpm, the typical speed is 0~4500rpm, gearbox ratio is 95:1, gearbox torch is 1400N.M., max G force is 3077G, typical G force is 2493G.
The bowl material is made of stainless steel 316, the screw is made of SS 304, and the propeller protection is by tungsten carbide tiles. The bearing is top brand NSK/FAG for longer working life. And the solids discharge port and fluids distribution port are both protected by tungsten alloy.

The decanter centrifuge for oil sludge treatment system produced by GN solids control is shipped to Brunei recently. For different treating capacity requirement, we have different models for option.
GNLW224EP-VFD decanter centrifuge is used for 1m3/h oil sludge separation system, GNLW363C-VFD decanter centrifuge is used for 5 m3/h oil sludge separation system, GNLW553C-VFD decanter centrifuge is used for 15 m3/h oil sludge separation system.

The working process is as below:
The vacuum pump pick up the oil sludge from the waste pit to pre-mixing tank, the chemical or water or diesel oil will be added in this process and the mud agitator is agitating to mix them evenly, the submersible slurry pump will transfer the oil sludge to shale shaker to separate the coarse solids from the oil sludge, then the fluids will drop down into the mud tank, the screw pump will transfer the fluids to decanter centrifuge, by adding proper chemicals to improve the separation performance. The fluids from decanter centrifuge will drop into the buffer tank, then flow to vertical centrifuge to separate oil and water. The oil and water will be recovered into storage tank.

The features of GN decanter centrifuge:
1) Centrifuge bowl is made of duplex stainless steel 2205 for longer working life.
2) The bearing is SKF bearing for stable working
3) The screw is made of stainless steel by heat treatment, the opening screw propeller to increase the treating capacity and improve the separation performance
4) The collection box is made of SS304 for better corrosion resistance.
5) The screw propeller is protected by tungsten carbide tiles, the solids discharge port and fluids distribution port is protected by tungsten carbide alloy. All of these protection is replaceable when damaged.
If you are interested in oil sludge treatment decanter centrifuge, pls contact with GN freely.

As one of the most professional manufacturer of solids control equipments in China, GN solids control recently shipped one batch of vacuum degasser and mud cleaner to Middle East for oil & gas drilling rig solids control system.

We have 2 models of horizontal vacuum degasser, GNZCQ270B & GNZCQ360B, with treating capacity 270m3/h and 360 m3/h. The technical specification is as below:
GNZCQ270B:
vacuum degree : -0.02~-0.04 Mpa
Rotation Speed: 700rpm
Main Motor Power: 22KW
Pump Motor Power: 7.5KW
Suction line: 6 inch
Discharge line: 8 inch
If there is no enough space to install horizontal vacuum degasser, we also have option of vertically installed centrifugal degasser with treating capacity of 300 m3/h. It is with big capacity, high rate of degassing, smaller footprint, less energy consumption, easy operation and maintenance.

The mud cleaner is desander cone, desilter cone, bottom shale shaker 3 in 1. We can also provide customized design for the combination of hydrocyclones and bottom shale shaker, like desander cone + bottom shaker or desilter cone + bottom shale shaker, desilter cone + double deck shale shaker, desander cone + double deck bottom shale shaker for different applications. Compare with separate desander and desilter without bottom shale shaker, the mud cleaner with smaller footprint and better separation performance, the user can get more drilling fluids and much drier discharged solids.
For the bottom shale shaker option, we have 3 panel shale shaker, 4 panel shale shaker , 2 panel shale shaker, double deck shale shaker and tandem shale shaker to meet different requirement. All the shaker screens are with composite material frame which is produced by GN own screen workshop. We can produce shaker screens from API 20 to API 300 and our shaker screens are produced comply with API RP13C.
For more information about solids control equipments and shaker screens, pls contact with GN solids control.

GN new released design of TBM slurry separation unit including :
GNTBM-240M, treating capacity 240 m3/h;
GNTBM-360M, treating capacity 360 m3/h;
GNTBM-500M, treating capacity 500 m3/h;
GNTBM-1000M, treaing capacity 1000 m3/h.

Take GNTBM-240M TBM slurry separation unit as example, the technical specification as below:
1) Coarse solids shaker to separate big solids from the slurry, the separated slurry will drop into the bottom mud tank.
2) #1 centrifugal pump will transfer the slurry to desander cone, the cut point is 45 microns, after treatment, the fluids will drop into the mud tank. The separated solids will be drying by the top layer screen firstly and then drop to the bottom layer screen for drying again, so that more useful fluids will be collected and the discharged solids is much drier for easier disposal. The centrifugal pump is 100% interchangeable with famous brand centrifugal pump parts, and the pump casing, impeller are both made of hard ductile iron alloy.

3) #2 centrifugal pump transfer the fluids to desilter cone, the cleaner fluids will drop into the mud tank again for reuse by the TBM machine, the discharged solids will be drying again by the double deck shale shaker or single deck bottom shale shaker. All of the shaker screens are composite material frame shaker screen with longer working life and larger effective screen area, which is made by GN solids factory.

4) Because of space limit at the jobsite and for convenient movement, we design the TBM slurry separation unit in very compact design. To get more clear water, the client can use dewatering centrifuge in the next process by working with chemical dosing system. GN can provide different treating capacity dewatering centrifuge based on client’s requirement.
If you have requirement of TBM slurry separation unit, pls contact with GN solids sales for more information.