big bowl centrifuge | GN Decanter Centrifuge

Meet Good manufacturer of decanter centrifuge at CIPPE 2018

If you are looking for a good manufacturer of decanter centrifuge, vertical cuttings dryer, shale shaker, shaker screens, welcome to visit GN solids control stand at CIPPE 2018 to check our equipments.
Our stand info is as below:

We will show our best sold model decanter centrifuge at the show. As the largest and most professional oilfield industry products and service exhibition in China, all of the manufacturers will show their most advanced technology during the show.
GNLW363CG-VFD decanter centrifuge is one of the best sold model for our international clients, it can be used for solids control system, drilling waste management system, industry waste water treatment, dredging slurry separation, dewatering system, barite recovery, Low gravity solids separation, etc.

GNLW553C-VFD decanter centrifuge is the best sold big bowl big volume centrifuge, it is normally used as dewatering centrifuge with chemical dosing system for waste water treatment, it can be used for all kinds of waste water treatment. Sometimes it is used for oil sludge treatment system when the clients need 20~25m3/h treating capacity.

We will also show vertical G dryer GNCD930, it works together with GNLW363CG-VFD decanter centrifuge as drilling cuttings treatment system for oil based mud.
4 panel shale shaker GNZS594E installed with composite material shaker screens, with longer service life and better performance. We produce shaker screens in our own workshop, so GN solids control can control the quality by our own quality control dept. without purchasing from other suppliers. We produce OEM shaker screens for own shaker and replacement shaker screens for US brand shale shaker, like Derrick, Swaco, Brandt, FSI, Kemtron, etc.

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GN Oil Water Separator for Oily Sludge Separation Systems

As the development of energy industry and also the enhancing demand of environment protection, the oily sludge, or oily waste discharged from the energy industry are being restricted to be disposed directly. The regulations and standards are more and more rigid than before. Now all the players in this field are facing a problem: how to treat the oily sludge efficiently and safely?

GN Solids Control has provided a solution, which is proved to be suitable in both domestic China and abroad. The complete system is combined of several equipment, which serve different applications, including the functions for heating, pre-mixing, reduce the viscosity, separating out the solid particles, leveling the oil and water and finally separate out all of the 3 phases.

GN Oily Sludge Separation SYSTEM
GNOWS series Oil Water Separator is one of the important equipment in an oily sludge separation system. It is located after the GNIPC Inclined Plate Clarifier or a GNLW decanter centrifuge to hold and further treat the liquid phase from forehand equipment, to separate the oil from water.
The working principle is gravity stratification cause by the different density of water and oil. Inlet of this equipment is the waste liquid, while the outlets are 3: the clean oil outlet, the clean water outlet and the gas release ports. Inside the GNOWS oil water separator, there is a detachable coalesce, when the oily wasted water enters the oil water separator and meets the detachable coalesce, the oil and water could be separated. Then the oil enters the oil chamber while the water enters the water chamber. The tank is designed to hold the liquid for a while for a complete separation of the 2 kinds of liquid. Outside the tank, there is a visible level meter, for the operator to observe the inside condition in time.
For this equipment, GN has different models for different treating capacities, please see details in GN website.

Q/A for GNLW Series Decanter Centrifuges

GN Solids Control, as the first API certified solids control manufacturer in China and also the leading oil and gas centrifuge producer, has a full range of centrifuge models from the 9 inch diameter bowl baby centrifuge to the 30 inch diameter bowl giant centrifuge. Each year, GN produces more than 150 sets centrifuges of different sizes and GN equipment like shale shakers, shaker screens and decanter centrifuges are sold to more than 70 countries or regions in the world.

About GN Solids Control

This Q/A are giving more information for choosing and getting a more comprehensive information of GN Centrifuges.
1. Why there are VFD for decanter centrifuge and also fixed speed available?
VFD control panel helps the operators to adjust the speed, the differential speed and other main parameters of centrifuge to get a suitable separating result. In drilling cuttings or drilling fluid waste management conditions, when the material condition is not stable, it is necessary to use a VFD one. But in case of solids control system of a drilling rig, when the mud condition is stable, a fixed speed control panel here is more economic, cause it requests less maintenance and easier operating. Take GNLW363CG for example, even the fixed speed one, GN could provide pulley and belt for an extra common speed.
2. What’s the main difference between the high speed decanter centrifuge and a middle speed decanter centrifuge? The rotating speed of centrifuge determines the cutting point the centrifuge could treat out, for example the GNLW452C decanter centrifuge, with a typical speed at 1800RPM is mainly used in a solids control system for barite recovery, the cutting point is 5 to 7 microns, while the GNLW453C-VFD with a typical speed of 3000RPM, which is a high speed one, cutting point is 2-5 microns.
3. What’s the difference between longer centrifuge and shorter centrifuge? The length diameter ratio is an important factor of a centrifuge. The longer centrifuge is a centrifuge with a larger length diameter ratio. The bigger this value is, the longer time material stays in centrifuge, then the dryer separating result you could get.
For more information, welcome to visit GN website of contact GN sales directly.

GN Big Bowl Centrifuge Working With Large Capacity

Since early this year in CIPPE Beijing, GN Solids Control firstly showed its big bowl decanter centrifuge GNLW764-VFD, the super bowl decanter centrifuge with a diameter of up to 30 inches, this centrifuge model got lots of attentions from the end users, especially from the construction work and piling projects. The large capacity and excellent performance is exactly what they want.

The big bowl centrifuge GNLW764-VFD has following features:
1. With a bowl of 7650mm long, while 3344mm as a bowl diameter, GNLW764 is promised to have a large treating capacity in order to be suitable for many applications.
2. Because for the large length diameter ratio, which is up to 4.4 and also a G force at 3000G by high speed rotating, this centrifuge could give a for a perfect separation result, a clearer Liquid phase after treatment.
3. Just as all centrifuge models GN provides, the liquid discharge port is easy to adjust. It helps operator to get a suitable dryness fraction by adjusting rotation speed, differential speed and liquid discharge ports.
4. Stable performance：all rotating part of the centrifuge are fabricated by five-axis machine, and well dynamic balancing tested at high speed to ensure a precise fabrication. Besides, theis model is also functioned with automatic lubrication.
5. Heavy load：GN employs a gearbox with 25000N.M torque for GNLW764-VFD for handling heavy load conditions.
6. Long service life：bowl material is duplex stainless steel SS2304 by centrifugal casting, YG8 hard tiles for impeller protection, and also YG8 material for liquid discharge ports and solids discharge ports. Genuine SKF bearings are used in order to ensure a longer service life.
7. Easy operation：with PLC smart control system，HMI visual operating screen, the operator can observe the on time working condition of the centrifuge. By adding more devices onto the centrifuge like temperature protection for bearings, vibration protection, overload protection and current monitor are all equipped fo this centrifuge, for a more convenient operation.

GN Big Bowl Centrifuge Successfully Used for Railway Construction Project

Centrifuges are equipment with high efficiency and various applications. Centrifuges with different sizes are used for different applications.

Like among the GN Solids Control’s centrifuge models, the fixed speed 14 inch diameter bowl GNLW363 series centrifuges and GNLW452 decanter centrifuge with 18 inch diameter bowl are widely used for the oil and gas drilling solids control systems for the barite recovery. The VFD controlled GNLW363G, GNLW453 and GNLW553 series decanter centrifuges are used for the drilling cuttings waste management when working with a GN high G drying shaker or a GN Vertical cuttings dryer which are respectively for WBM and OBM and drilling fluids treatment projects, when working together with a chemical dosing system. GNLW223 and GNLW224 decanter centrifuges are mostly used for the diamond drilling projects and some projects with small treating capacities.
GNLW764 decanter centrifuge is a newly designed decanter centrifuge with a 30 inch big bowl, and a length bowl ratio as large as 4. It is specially designed for the big TBM projects, working after the shale shaker and desander plant. In some clients’ jobsite, there are 2 parallel desander units, each including one GNZS594 shale shaker and a GNZS594-2S12N mud cleaner. All fluids after treated by the 2 desander unit are transferred to the giant decanter centrifuge. On inlet of decanter centrifuge, there is a set of GNDW2000 Dewatering unit, it is used for chemical dosing for the centrifuge. It has 3 chambers for adding different chemicals for flocculating the extra fine particles into bigger ones, in order to be separated out by the centrifuge. Although after flocculation, the decanter centrifuge’s treating capacity is greatly reduced, GNLW764 could still handle a large capacity upto 90 cbm per hour.
Except for the giant centrifuge, other sections of the system are all designed into 20 ft containers. Even the shaker and mud cleaner are in frames with container corners. It is easy for transportation and layout.
If you need more information, welcome to contact GN Sales team directly.