Author: gnadmin

GN decanter centrifuge has worked successfully for power plant waste water treatment in Taiwan, China. The project configuration is as below:
1) Total equipments: 5 sets of GNLW454E decanter centrifuge

2) Material to be treated: power plant waste water
3) Target: Discharge sludge with water content below 75%.
4) Main concern: the solids content is very low, and much ultra fine solids, and the waste water is highly corrosive chemical water.

GNLW454E decanter centrifuge is special designed for waste water treatment, according to the samples we received from the customer, we had designed special bowl angle, pond depth, and bowl major materials for better corrosion resistance for the chemical waste water, normally our standard bowl material is duplex stainless steel 2205 or 2304, for this project, we use duplex stainless steel 2507 for better corrosion resistance.The basic technical specification is as below:
Bowl diameter: 450mm (18 inch), bowl length 1890mm (74.5 inch), the length/diameter ratio is 4.2, the max bowl speed is 4000rpm with max G force 4032G, the main motor is 45KW, the back drive motor is 11KW.
Below is the photo to show the discharged solids from our decanter centrifuge, the customer is satisfied with the treatment result.
Below is the photo to show the feed in waste water and after treatment clean water.

For the 18 inch bowl decanter centrifuge, we also have other models for different applications, such as GNLW453C-VFD can be used for oil & gas drilling solids control system and drilling waste management system, it can be also used as dewatering centrifuge with chemical dosing system. GNLW452D decanter centrifuge is middle speed decanter centrifuge, it can be used for barite recovery in the solids control system, it can be also used for construction tailing slurry treatment.
If you need a decanter centrifuge solution, pls contact with GN solids control.

A new drilling cuttings transfer pump is introduced by GN solids control, which is more suitable for less space, less power consumption, high cuttings solids content, less flowrability, not only for oil & gas drilling cuttings, but also for HDD waste, mining tailings, dredging slurry, and other types slurry. The main application is to use the pump to transfer drilling cuttings to the pitless drilling cuttings treatment system.

Compared with traditional drilling cuttings transfer ways, like screw conveyor and vacuum pump, the cuttings transfer pump has the advantages as below:
1) Less space requirement
2) Less power consumption
3) No need big model air compressor
4) Easy installation, easy maintenance
5) Better abrasion resistance
6) Reliable performance, higher efficiency
7) Long distance transfer up to horizontal 100 meters, and vertically 40 meters
8) Centralized lubrication system effectively prolongs the service life of wearing parts
9) The lifting pad/point can meet offshore drilling requirement, we can make it approved by CSS and DNV 2.7-1 lifting certificate as per client’s requirement.
10) The electric motor and control panel can be with different explosion proof standard for option, like CNEX zone 1, ATEX zone 1 or IEC EX zone 1.
11) The bearing to be used is from world famous brand bearing for longer working life.

12) Suitable for high solids content cuttings, big solids size, less flowrablity
When the rod chambers at the front ends of the two oil cylinders are connected by high-pressure hoses, the rod chambers at the front ends of the pistons of the two oil cylinders are connected through an oil pipe to form a closed oil path. The rodless cavity connects the rodless cavity of the two cylinders with the main oil pump and the mailbox through the reversing valve. For more information, pls contact GN freely.

Recently we shipped one unit of containerized chemical dosing system for dewatering centrifuge to our client in Africa, this is repeat order from one of our old client. The technical configuration is as below:

The three tank automatical powder polymer mixing system, including 3 compartment tank, auger conveyor, hopper, 3 sets agitator, level meter, solenoid valve, piping system, flow meter and PLC control system for automatic continuous operation, 2 sets of chemical dosing pump, 2 sets safety valve, pressure gauge and pump holder, etc.
Coagulant mixing tank including agitator, level meter, 2 sets of chemical dosing pump, safety valve, pressure gauge, pump holder, etc.
All of these above items are installed inside 20ft container, with windows, doors, lightings and air conditioner.

The dewatering unit worked with dewatering centrifuge, as one of professional decanter centrifuge manufacturer in China, GN solids control produce various size decanter centrifuge from 9 inch bowl, 14 inch bowl, 18 inch bowl, 22 inch bowl, 30 inch bowl, with different bowl length for different applications. The client already purchased the dewatering centrifuge before, when the treated fluids/ mud will be recovery for reuse, only mechanical separation will be enough, cause the decanter centrifuge cut point is 2~ 5 microns, which can separate most of the fine solids from the mud/drilling waste. When the drilling project is finished and the purpose is to get pure water and final disposal, we need to use dewatering unit ( into the container) to get the ultra fine solids to be accumulated into the particles which can be treated by decanter centrifuge. The discharged water remained solids only below 1 microns, most of the solids can be separated out, the discharged solids is dry enough to be collected by waste truck.
If you need dewatering centrifuge with chemical dosing unit, pls contact with GN solids control.

Recently 2 sets of offshore drilling mud cleaner are ready for shipment, the difference of the offshore used mud cleaner with onshore drilling mud cleaner is the lifting point and explosion proof vibration and starter. The lifting pad system conforms to DNV 2.7-1 or CCS lifting certificate to meet for offshore drilling. We can make customized design equipments according to different requirements.

The mud cleaner equipped with 3 ea of 10 inch desander cone and 16 ea of 4 inch desilter cone, all of the hydrocyclones are made of 100% composite material for longer working life, especially when the solids content is very high, we will use metal cover outside the polyurethane material cone in case that the hydrocyclone will be easily deformed and damaged. 2 units of 1.72KW vibration motor from Italy Oli or US Martin brand are used to drive the bottom drying shaker. The lifting frame with offshore approved lifting pad is designed for convenient lifting the equipment from land to offshore rig. We can provide different explosion proof standard motor and starter based on different requirement.

The mud cleaner with a 4 panel screen bottom shale shaker to recovery more useful drilling fluids. All of the screens are composite material frame shaker screen with stainless steel 316 wire mesh, we use 3 layers of wire mesh for all the API mesh over API60, which has been widely used in different countries for oil drilling rig for treatment of different types drilling fluids, the working life is from 300 to 700 hours.
Except for mud cleaner, GN solids control also produce other solids control equipments such as shale shaker (both linear motion shale shaker and dual motion shale shaker), desander, desilter, decanter centrifuge, centrifugal pump, mud gas separator, vacuum degasser, mud agitator, mud gun and drilling waste management equipments.

As the professional manufacturer of full hydraulic drive decanter centrifuge in China, GN solids control developed full hydraulic drive decanter centrifuge with good quality good performance lower maintenance cost, and shipped it to clients in Middle East. We can design and produce rated speed decanter centrifuge ( high speed and middle speed), VFD decanter centrifuge and full hydraulic drive decanter centrifuge for different applications. We have different bowl size, bowl length for various client’s requirement, including 9 inch, 14 inch, 18 inch, 22 inch, 30 inch, the bigger ratio of the bowl length/ bowl size, the better result of the treatment slurry/ waste water.
The features of Full Hydraulic Drive Decanter Centrifuge:
1) Driving system is VISCOTHERM full hydraulic drive system for reliable performance and after sales service

2) The explosion proof standard is ATEX for zone 1 application
3) The differential speed is adjustable from 10 ~ 60 rpm, the bowl speed is adjustable from 0 ~3600rpm, the adjustable bowl speed, differential speed and pond depth to archive different dryness requirement according to different material conditions.
4) The max torque is 4163 N.M (3260 ft.lbs) for heavy mud treatment
5) The max treating capacity is 200gpm for water
6) The max G force is 2610G under 3600rpm
7) The SKF bearing for longer durable life, and adopt high environmental temperature
8) PLC smart control for easy and convenient operation
9) The bowl material is made of duplex stainless steel 2205 or 2304, the other bowl components are made of stainless steel 316L.The screw is made of stainless steel 304 by heat treatment up to 1000℃.The open impeller design can increase the fluids treating capacity. The collection box is made of stainless steel 304.
If you need reliable performance full hydraulic drive decanter centrifuge, pls contact with GN solids.