Month: August 2018

GN solids control shipped one unit of hydrovac excavation waste slurry treatment system to Canada this week. The configuration is as below:
1) Dewatering centrifuge modular:

One unit of 22 inch bowl decanter centrifuge with feeding pump, telescopic skid as dewatering centrifuge unit, it can work together with chemical dosing system by adding flocculant or chemicals. A fluids catching tank with pump is installed under the centrifuge fluids discharge port to collect the fluids discharged from the dewatering centrifuge.
2) Fine Solids Hydro cycling Separation Module

GN mud cleaner ( desilter cone with bottom shale shaker) separate the ultra fine solids by desilter cone with feeding pump, the cut point is 25 microns. The washing tank under the mud cleaner collect the clean slurry discharged from desilter, and the drying shaker recover more useful fluids and make the discharged solids much drier.
3) Waste Collecting and Washing Module

Firstly the waste ( composed of water, soil, large size trash and other mass) is delivered to the site by hydrovac truck and discharged to the large collection hopper, a bottom screen separate the large size trash from the waste slurry. After separation, the waste is collected by the mud tank under the coarse screen. The waste slurry is pumped to GN high G drying shaker to separate fine solids and reduce the solids content. The high pressure jetting device is used to flushing the screens to avoid the blocking of shaker screens and wash the slurry.GN own made composite material shaker screens for longer working life is installed on the shale shaker.

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This week GN solids control shipped 2 units of Large Bowl 30 inch GNLW764A Decanter Centrifuge for Mining Industry to Australia, this is the largest centrifuge model we have made right now, we have 9 inch, 14 inch, 18 inch, 22 inch and 30 inch bowl decanter centrifuge with different treating capacity, different speed, different G force for various applications.

The diameter of the centrifuge bowl is 760mm, the bowl length is 3328mm, the treating capacity is 528gpm, max bowl speed is 2650rpm, typical bowl speed is 2200rpm, max G force up to 3000G, typical G force is 2060G. The main power is 160KW, back drive motor is 90KW, the gearbox Torch is 25000.N.M.

Same with the smaller decanter centrifuge, the screw propeller protection is tungsten carbide tiles, the bowl fluids distribution port and solids discharge port is protected tungsten alloy for longer working life, the bowl material is made of duplex stainless steel 2304 for anti corrosion.

The bearing for this big bowl centrifuge is very big, need separate lubrication system for better lubrication to extend the working life of the bearings. The plate type heating exchanging system can effectively cool down the lubrication oil so that to get a better cooling performance and the temperature sensor installed on the bearing seat will send signal to the PLC to trip off the centrifuge in case of over high temperature.
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GN solids control shipped several units of drilling waste cuttings screw conveyor to Africa Client, this is repeat orders for the same clients for many years. The screw conveyor is widely used for transferring and collecting the drilling waste cuttings from solids control system.

The installation of screw conveyor:
The screw conveyor might be installed on different place for different functions, for example, it can be installed along with the solids control system mud tank besides the shale shaker, mud cleaner, decanter centrifuge to collect the discharged drilling cuttings; it can be installed slantly under the horizontal installed screw conveyor to transfer the drilling cuttings to vertical cuttings dryer; it could be installed under the vertical cuttings dryer solids discharge port to transfer the discharged solids cake outside automatically, it can be installed under the decanter centrifuge solids discharge port to transfer out the solids automatically. It can be used in cuttings solidification unit to transfer the 3 materials and mix them together.

The screw conveyor can transfer the material with less fluids content in the cuttings, otherwise it will flow back and spill out. When the fluids content is very high, we need to use vacuum pump, slurry pump or hose pump to transfer to the drilling waste management system.

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One unit of 1m3/h oil sludge treatment system testing unit is shipped to Europe recently, this is for client’s urgent requirement, later the 15m3/h oil sludge separation system will be shipped next month for the same client.

The client has visited GN factory in Beijing twice, after factory inspection and business negotiation, they placed order for the 15 m3 oil sludge treatment system, and also the 1 m3/h oil sludge separation system for urgent purpose.
To check the working video of the 1m3/h oil sludge separation unit, pls check our website:
http://gnsolidscontrol.com/video/oil-sludge-treatment-test-unit-working-video

The main components of the system including:
1) 2 panel shale shaker to separate coarse solids from the oil sludge in case of any coarse solids will damage the decanter centrifuge
2) 2 phase mini decanter centrifuge to separate the fine solids maximumly from the oil sludge by mixing with chemicals, with fluids collection box
3) 3 phase disc centrifuge to separate the oil from water to get pure oil and pure water
4) Oil storage tank and water storage tank
5) Pre mixing tank with mud agitator, heating lines
6) Chemical dosing system
7) Shale shaker fluids storage tank with heating lines
8) Shale shaker feeding pump
9) Decanter centrifuge feeding pump
10) Tank skid for the all equipments

The system is originally produced to show at CIPPE oil exhibition, after the exhibition, we shipped the testing unit to a domestic client for testing their oil sludge treatment, they use the proper chemical jetting and get the satisfied result, then we shipped the unit back to our factory for cleaning, and prepare to test in other client’s jobsite.

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