Recently GN solids control shipped mini decanter centrifuge of solids liquid separation to South America clients. The mini decanter centrifuge can be widely used for the applications as: waste water treatment, diamond core drilling slurry treatment, and other solids liquid separation project. We have 2 different models of mini decanter centrifuge for option, the technical specification is as below:


GNLW223D, the bowl diameter is 9 inch, bowl length is 26.4 inch, max speed is 4500rpm, normally we use 3800rpm to archive 1777G, the separation cut point is 2 ~5 microns, gearbox torch is 500N·M, this decanter centrifuge is normally used for core drilling solids removal unit, the SRU including mini shale shaker , mini decanter centrifuge ,feeding pump, transfer pump, mixing hopper, mixing pump, mud tank, slurry collection pump and pipelines. It can treat the slurry and recovery water, the client can save water consumption and save drilling cost.
It can be also used for oil sludge separation system, GN compact design oil sludge treatment unit is a 1m3/h oil sludge treatment system, including mini decanter centrifuge, 2 panel shale shaker, pre-mixing tank, oil sludge collection tank, centrifuge feeding pump, disc centrifuge, butter tank, oil storage tank, water storage tank, chemical dosing unit.


GNLW224EP-VFD, with same diameter bowl 9 inch, the bowl length is 36.4 inch, max speed is 5000rpm, the normal speed is 0~4500rpm, the max G force is 3077G, typical G force is 2492G, the gearbox ratio is 95:1, gearbox torch is 1400N.M, this model centrifuge with longer bowl length, and higher G force, it is suitable for waste water treatment, by working with flocculants, the decanter centrifuge can separate the ultra-fine solids from the waste water, so that it is qualified to be treated by chemicals in the next process.
For more information, pls contact GN solids control.

Recently GN solids control shipped another set of decanter centrifuge for oil sludge treatment to Brunei. The oil sludge treatment equipments in this project including:


1. Shale shaker: the function is to separate coarse solids from the oil sludge, the discharged solids can be collected by waste container, the fluids can be feed to decanter centrifuge by screw pump for further treatment. If the user do not want to use coarse solids shale shaker, they can use a filter instead, but the coarse solids content should be very small.
2. Decanter centrifuge: The decanter centrifuge is to separate fine solids from the oil sludge, the cut point is 2~5 microns, by working with chemical dosing unit, the centrifuge separation performance could be improved.
3. Chemical dosing unit: the chemical can be added in pre-mixing process, decanter centrifuge process, disc centrifuge process( for oil water separation). Proper chemicals will improve the separation result. The user can do a laboratory test to choose correct type chemical.


4. Mud tank: Including pre-mixing tank( if applicable, some clients do not have this process, but they need to ensure proper chemical jetting and mixing for the original oil sludge with proper solids content, density, viscosity), shale shaker tank, decanter centrifuge tank, buffer tank for oil and water, etc.
The client do not buy the complete oil sludge treatment system, only part of the equipments. Vacuum pump is widely used to pick up oil sludge from waste pit. It can be also used to transfer drilling cuttings, waste oil, dredging slurry, oil contaminated soil, sand, industrial waste water, etc. materials.
The vertical centrifuge is used to separate oil, water and solids, the recovery oil and water will be storaged in the buffer tank , then flow to the storage tank automatically. For more information, pls contact with GN solids control.

This week GN solids control finished production of vacuum degasser and mud cleaner for clients in Middle East.


We have 3 types of degasser for oil & gas drilling industry, vacuum degasser, centrifugal degasser, mud gas separator. The mud gas separator is installed before the solids control system trip tank, to separate the hazardous gas from the drilling fluids and prevent it from kick off. The vacuum degasser and centrifugal degasser is used after shale shaker and behind desander, desilter or mud cleaner, the function is to separate the gas from the gas cut mud and protect the next process equipments like centrifugal pump, and keep the balance of the drilling fluids, their function is same, just vacuum pump is installed horizontally on the tank top, the centrifugal degasser is vertically installed in the mud tank , it can save space on the mud tank.


The mud cleaner produced by GN solids control is a combination of desander cone, desilter cone and bottom shale shaker. With different qty of hydrocylones, there are different treating capacity for option. The desander cone, desilter cone material are 100% polyurethane which is wear resistance material. The bottom shale shaker equipped with 4 panel shaker screens, with composite material frame for longer working life. Centrifugal pump #1feed the mud from degasser tank to desander cone, the clean fluids dropped into the desander compartment, the solids are separated out and drop down to bottom shale shaker, the useful fluids will be collected and the drier solids are separated out from shaker screens. Centrifugal pump #2 feed the mud from desander compartment to desilter cone, the clean fluids dropped into desilter compartment, which is clean fluids can be reused to prepare for new fluids or can be reused directly.
For more information about vacuum degasser and mud cleaner, pls contact with GN solids control.

As one of the professional manufacturer of TBM (Tunnel Boring Machine) Slurry Separation Plant in China, GN solids control recently provide standard design TBM slurry separation system with different treating capacity, normally the required slurry volume is very big, we can provide separation system with capacity of 240m3/h, 360m3/h, 500m3/h, 1000m3/h and customized design TBM slurry separation system as per our client’s requirement. Also we can provide TBM slurry dewatering decanter centrifuge if you need to get more clear water and drier discharged solids, the water can be recovered to save cost.


A basic TBM slurry separation unit including: coarse solids separation shaker, double deck shale shaker with hydrocyclones, feeding pump ( for desander cone and desilter cone), fluids collection mud tank with tank accessories.


The coarse solids shaker is used to separate the big solids, stones, sands and other big mass from the slurry and protect the equipments in the next process. The shaker screens to be used is a type of slot screen instead of woven screen, which is more wear resistance in separation of coarse solids.
The mud cleaner is a combination of desander cone, desilter cone and double deck bottom shale shaker, 2 feeding pump transfer the slurry to desander cone, desilter cone separately. The desander cone cut point is 45 microns, the desilter cone cut point is 25 microns, both of the desander cone and desilter cone are made of 100% polyurethane material. Compared with single deck bottom shale shaker, the double deck shale shaker can separate the discharged solids much drier, so that the users can collect the discharged solids easily by trucks.
The mud tank to collect the slurry will storage the slurry temporarily and after the final treatment of desilter cone, the clean fluids will be reused to keep the TBM project working well.

Recently one batch of solids vacuum pump are shipped to offshore drilling platform, it can be used to transfer drilling cuttings ( drilling waste), clean the cabin, clean the drilling platform, clean the mud tank, etc. It is an ideal equipment to transfer slurry with high content solids, high density, high viscosity.


We have 3 models of solids vacuum pump with nominal transfer rate of 40m3/h, 20m3/h, 10m3/h, the capacity will be varied for different material. For the max model GNSP-40B vacuum pump, the max suction distance is 50, the max discharge distance is 1000m, and max transfer solids content is 80%, the max allowed solids size is 75mm. The user need to prepare a air compressor for air supply to the vacuum pump, the air demand is 17m3/min. There are 2 mode for option, automatic and manual, for normal condition, automatic option will be selected, for special material and special working condition, the user can choose manual operation.
The smaller size vacuum pump is compact design and moveable design. The max solids size is 50mm, the max discharge distance is 500m, and air demand is 8m3/min and 4.2 m3/min.
Except for solids vacuum pump, we also provide other types transfer pump, like centrifugal pump, submersible slurry pump, shear pump, screw pump, etc. Compared with these pumps, the vacuum pump’s design is more compact, no need to use electricity, less power consumption, can transfer longer distance. Especially for offshore drilling platform, electricity power is limited to be used, vacuum pump is an ideal way to transfer drilling cuttings compared with screw conveyor and other types pump, just the user need to do small changes on the design to make it suitable for offshore drilling platform application.
For more information about our solids vacuum pump, pls contact with GN solids control.