Category: VFD decanter centrifuge

3 Phase Decanter Centrifuge for oil water separation to China ES Company

One unit of three phase decanter centrifuge is ready for delivery to China Environmental Science company for oil water separation.
The three phase decanter centrifuge working principal is as below:


The solids, oil and water with different gravity, so the generated centrifugal force is different. The solids with largest specific gravity will generate highest centrifugal force, the next is the heavy phase liquid ( water) and the light phase liquid (oil). Due to different centrifugal force, one solid layer and two liquid layer are formed. The solids to be pushed out by the screw, the liquids are separated out from their respective nozzles, the solids oil water separation can be achieved.


GN three phase decanter centrifuge is designed for oil water solids separation under 24 hours continuous working and easy operation & maintenance. The main components including centrifuge driving system, decanter bowl, screw inside the bow, centrifuge skid and VFD control panel.
The 3 phase decanter centrifuge is installed on the mud tank or on the telescopic skid with feeding pump, it has been widely used for oil sludge treatment system. The oil sludge can not be feed into the three phase decanter centrifuge directly, the sludge vacuum pump will pick up the oil sludge from waste pit to the pre-mixing tank, with chemical jetting, heating and agitating, the submersible slurry pump will suck from the pre-mixing tank to shale shaker module to separate the coarse solids and reduce solids content, the fluids discharged from shale shaker will be feed to two phase decanter centrifuge with proper chemicals for fine solids separation. The liquid treated by the 2 phase decanter centrifuge can be feed to three phase decanter centrifuge for oil water separation by adding proper chemicals.
For more information of three phase centrifuge, pls contact with GN solids control.

High G Drying Shaker and Decanter Centrifuge for Oman Project

Recently one batch of high G drying shaker and decanter centrifuge are ready for shipment to Oman, including screw conveyor transfer hopper, high G drying shaker module, decanter centrifuge module. The technical configuration is as below:


1. High G drying shaker module, GNZS594J high G drying shaker installed on the mud tank, with screw conveyor transfer system to transfer the drilling cuttings automatically. Four panel composite material frame shaker screens with 2 or 3 layers of stainless steel wire mesh are installed on the shale shaker, the shaker screen is produced comply with API RP13C standard.


2. Decanter centrifuge module, GNLW363D decanter centrifuge installed on the mud tank, with screw conveyor transfer system to transfer the discharged solids to cuttings collection box automatically. Also we can provide variable frequency drive decanter centrifuge with better treatment performance.
Firstly the drilling cuttings are feeding to high G drying shaker to separate coarse solids and reduce the solids content, the fluids will drop into the mud tank under the high G drying shaker, the screw pump will feed the fluids to high speed decanter centrifuge to separate fine solids from the drilling fluids, the clean fluids will be recycled and back to solids control system to prepare for new drilling fluids, the drilling cuttings are transferred by the screw conveyor.
This system is customized designed for water based mud drilling cuttings treatment project in Oman, with electric control system and electric motor compliant with ATEX standard. For OBM and SOBM drilling cuttings treatment project, GN standard GNCM-40A drilling waste management system will be recommend, which consists of GNCD930G vertical cuttings dryer, GNLW363D decanter centrifuge with feeding pump, screw conveyor, mud tank skid and accessories.
If you need a customized solution for drilling cuttings treatment and solids control, pls contact with GN solids sales.

 

Drilling Cuttings Vertical Dryer System for Middle East Client

Recently one set of drilling cuttings vertical dryer system are ready for delivery to Middle East Client, the client just finished inspection before delivery to inspect the fitting and performance of the vertical cuttings dryer system.


The vertical cuttings dryer system consists of the equipments as below:
1. Vertical cuttings dryer GNCD930G
2. VFD decanter centrifuge GNLW363D-VFD
3. Screw conveyor 2 sets, one as flushing pump of vertical cuttings dryer, one as feeding pump of decanter centrifuge, their control is inside the control panel of vertical cuttings dryer and decanter centrifuge. The decanter centrifuge VFD control panel
4. Screw conveyor, to transfer the drilling cuttings to vertical dryer system continuously. GN produced screw conveyor have been widely used to transfer drilling cuttings, waste sludge with high solids content but less moisture, industrial waste, etc. materials in the world. GN screw conveyor with each section standard length of 12ft, we can make it with different numbers of sections for different transfer length, as 12 ft with 1 section, 24 ft with 2 sections, 36ft with 3 sections, 48ft with 4 sections. There are sealing rubber between sections and fastened with bolts. The connecting shaft between the middle section and the adjacent blade shaft should be securely fastened with bolts, and the blades at both ends of the hinge bearing should have continuity. When the screw conveyor is installed slantly, GN produced telescopic bracket can be used for angle adjustment. The closed plate cover or grating cover can be selected as requirement.
5. Telescopic skid for decanter centrifuge and vertical cuttings dryer on one skid, for convenient transportation and operation. The telescopic skid can be made as integral skid or separate skid according to the site’s requirement.
If you need a customized solution for drilling cuttings treatment system, pls contact with GN solids sales engineer.