centrifuge

GNLW452 is an economic standard decanter centrifuge. It is specially designed and made by China top solids control manufacturer – GN Solids Control Company. It is a basic centrifuge model for middle speed. It is widely used for barite recovery. Another popular function is to reduce the weight of high gravity mud, like used in HDD mud system to reduce the weight of the mud.

Parameters of GNLW452 middle speed decanter centrifuge for mud recovery system or barite recovery.

Dimension: The centrifuge is with 450 mm (18 in) bowl diameter and 1105 mm (43 in) in length. So some customer called it big bowl centrifuge.
Speed and G force: The max. bowl speed is 1800 rpm and the typical speed is also 1800 rpm. G force under 1800rpm is 815. Differential speed is 32rpm @ 1800rpm. In some cased, drilling site may need a lower speed, in the condition that, the mud weight is big, or want a bigger capacity, GN Solids Control can offer another set of pulley and belt to get a lower fixed speed, like 1200 rpm. In this case, customers only need to change the pulley and belt to lower down the speed.
Separation point: 5~7 microns. It means, it can remove solids bigger than 5 ~ 7 microns. Bigger than this point, the solids will remain in the mud. For HDD mud recovery system, this separation point is good. And when GNLW452 is used for barite recovery or used to reduce the weight of the mud, it is mainly used for pre-separation. There normally will be another set of high speed centrifuge for fine solids separation.
Recommended feeding pump for GNLW452 centrifuge is 11kw (15hp) screw pump. GN Solids Control recommended German brand NETZSCH pump feeding for the centrifuge.

Advantages of GNLW452 middle speed decanter centrifuge for mud recovery system or barite recovery
1) Single motor design for more compact design
2) Screw protection is interchangeable ceramic tile for longer lifetime and easy maintenance.
3) Screw flow distribution port and bowl solids discharge port protected by tungsten carbide alloy.
4) Easily adjustable liquid discharge weir height for flexible application.

Applications of dewatering unit
1) Dewatering unit is an important part for waste water treatment.
2) Combined with high speed or super high speed decanter centrifuge, dewatering unit is widely used for water base mud drilling cuttings treatment.
3) Dewatering unit can be used in TBM (Tunnel Boring Machine) drilling mud system
4) Dewatering unit can be used in dredging slurry separation system in civil projects. In this case, it is used together with belt compressor.

Flocculants is the most important part to effect dewatering unit performance. In order to insure a better performance of dewatering unit, we should pay attention on below points:
(1) If the surface of the flocculants powder is dissolved too rapidly, there will be particle mutually attached, therefore it will cause the particle interior does not be dissolved completely; the usual operation is to use various types of dispersing and dissolving device.
(2) Per different conditions, the time used to dissolve the flocculants varies. The main factors may as below:
A. The types of flocculants be used;
B. The water quality used as dissolution;
C. The temperature of water
D. The mixing efficiency.
Normally, its takes around 1hour for flocculants powder to be fully dissolved. If the flocculants cannot be mixing completely, it will reduce the performance.

Dewatering unit Design in drilling waste management field
Dewatering unit is usually put into container. GN Solids Control company offers 20ft containerized dewatering unit and 40ft containerized dewatering unit.
Dewater centrifuge for dewatering unit can be put into the container, inside the container or even on the top of container.

When dewatering unit is used together with decanter centrifuge. It should pay attention to that: the chemicals should add on centrifuge feeding pump outlet pipe, and before enter into centrifuge. The mud cannot be mixed with chemicals and then transfer to centrifuge. Pls refer our former mail for dewatering unit pipeline.

General description of Hydraucyclone desander desitler

Hydraucyclone is a normal parts used for mining industry, for drilling field, for waste water separation, soil depuration. In drilling field. Hydraucyclone can be used as desander desilter per different size. Or combined with shale shaker to work as mud cleaner. 

Big size desander cone normally used for mining, piling or CBM drilling.  Hydraucyclone for desander desilter in drilling fieldi usually small size:

1) Hydraucyclone for desander: 12inch, 10inch

2) Hydraucyclone for desilter: 5inch, 4inch

Main parts of Hydraucyclone for desander desitler. Take example of 4 inch desilter cone, it is components of below parts:

1) Shell

2) Cone tube

3) Drop in Apex

4) Orifice nut

When combined for a desilter machine, elbows and clamps, ball valves will be used for connection.

Principle of Hydraucyclone for desander desitler

Hydrocyclone is a cylindrical part of the conical vessel. The upper part of the internal cone section called the liquid cavity. Cone outside is provided with a liquid inlet pipe, and the liquid cavity is communicated to the tangential direction. The top of the container is the overflow port, the bottom is underflow (also called the discharging port). Cyclone size is determined by the maximum diameter of the cone. Its working principle is centrifugal sedimentation. Because of the coarse particles and fine particle size difference exists (or density difference), the centrifugal force, under the centripetal buoyancy, drag force of different sizes, due to the centrifugal sedimentation, pyramidal intermediate creates a low pressure area, forming a column of air, caused by vacuum suction effect, play, most of the fine particles in the cyclone under the actions of upper discharged from the overflow tube, heavy particles thrown to the wall of the barrel, slide along the barrel wall, from bottom outlet.

Materials ofd Hydraucyclone for desander desitler

Polyurethane is also called polyurethane formate, is a kind of polymer between the plastic and the rubber polymer materials. It has not only high strength plastic, and has the high elasticity of rubber. It is a new type of wear resistant material, an excellent comprehensive performance. It has many excellent performance, high wear resistance, in the synthetic material of the first, even more than some alloy steels. The polyurethane as hydrocyclone lining, its service life is four times of high chromium cast iron, four times eight times Ding hydrogen rubber, natural rubber. Polyurethane shore hardness in the range of 17~97 to 85~90, the best wear resistance.

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GN Solids Control only focus on top quality products, and offer with reasonable price. Since GN Solids Control company select the best quality material, and use the best machine to manufacture the solids control equipment, our market position is the best quality and reason price for China top market and international market, a little higher price than average price of our China competitors.

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For Solids Control System

  •  In Australia and New Zeland, GN Solids Control company is the only one China competitor for Local company and USA Europe company. GN Solids Control partnered with a Germany drilling rig manufacturer TT Asia, to take care of our solids control equipment business in Australia.
  • Since GN Solids Control have the CE certificate to export to Europe ,we also have the advantage for complete systems to European market.   http://www.gnsolids.com/News/156.html
  • Recently We have 2 Solid Control system building for SJ Petroleum export rig, and we have 2 Solids Control Systems for RG petroleum, and we have an order from HH (Honghua) for 4 Sets completed solids control equipment for their rigs.

GN  Vertical Cuttings Dryer

  • GN started developing the Vertical Cuttings Dryer from 2011 and have used the first Generation in 2012, we have already sold around 30 Vertical Cuttings Dryers to China and international market. Other Chinese company just start developing Vertical Cuttings Dryer from 2013, 2 years later than our company. From March 2014, we are selling the 2nd Generation Cuttings Dryer, this is the first cuttings dryer in China and applied in WBM and OBM.
  • You can check our Videos for Drilling cuttings dryer:  
  • http://www.gnsolidscontrol.com/video/vertical-cuttings-dryer-water-based-mud-drilling-waste   
  • http://www.gnsolidscontrol.com/video/drilling-cuttings-vertical-dryer-testing 
  • Many big oilfield service companies like Halliburton and Baker Huges are discussing with our company to work together for the drilling waste management equipment. GN have good business with big international companies like them.

Drilling waste high G dryer shaker is a special kind of shale shaker. It utilizes high G force mainly used to treat drilling waste cuttings.
Why it is called high G dryer shaker, what is the difference of high G dryer shaker with solids control shale shaker?

Yes, indeed high G dryer shale shaker is a kind of shaker. The difference of high G dryer shale shaker and solids control shale shaker as below:
1) G force different: High G dryer shale shaker may utilize G force around 8.0G during separate the drilling waste cuttings, while solids control shale shaker utilize 6.5G ~ 7G during working. The design and application G force different.
2) Feed type different: High G dryer shaker, it is used to treat drilling cuttings from solids control screen panel (shale shaker, desander, desilter). The cuttings transferred through screw conveyor auger to the high G dryer shaker. In this case, dryer usually is with hopper feeder. While solids control shale shaker is usually with box feeder or weir feeder.
3) As the dryer shaker G force is bigger then solids control shale shaker, in request a strong design for the shaker deck.
In which conditions high G dryer shaker can be used?
1) It is specialized for water based mud drilling cuttings separation. Followed with a high speed centrifuge for LGS. to separate the fine solids.
2) It can be used for oil based mud drilling cuttings separation, as the alternative of vertical cuttings dryer (Vortex G). But is cannot separate oil based cuttings as dryer as vertical cuttings dryer.
How can customer get fast delivery in case urgent?
GN always have high G dryer shaker and solids control shaker in stock in China factory and Houston warehouse.