One set of automatic tank cleaning system is ready for shipment in GN solids control yard, The user watch the testing before shipment and they are satisfied with the result.
Why use automatic tank cleaning system? The purpose is to separate the solid from the tank flushing slurry to make the water reusable.

Working principle of GN Automatic Tank Cleaning System:
The tank cleaning system supply fresh water to high pressure tank cleaning machine inside the system, then the pump in the system will bring the dirty water back to the system and return clean water back to the tank cleaning machine to reuse. The whole circulation will minimize the water consumption and power consumption. The circulation process is a continuous process with treating capacity 30m3/h of waste water.

The main configuration is as below:
Tank washing water treating capacity: 30m3/h
Clean water capacity: 7.5m3/h
Power consumption: 40KW
Motor and control panel could be explosion proof for CNEX zone 1 application.

Including sludge vacuum pump, air operation diaphragm pump, high pressure pump.
Including chemical dosing unit with static mixer, the tank washing water adding chemicals to accumulate the ultra fine solids and suspension soil so that it will separate the water more clear and get drier solids.

Including inclined plate clarifier with level meter, the solids settle down rapidly to the bottom of the clarifier. The inclined plate clarifier is installed after the chemical dosing unit, the accumulated solids will be easily settled down, the proper designed process will increase the efficiency of the automatic tank cleaning system.
Considering the marine shipment for international clients, the tank cleaning system is installed on a compact skid which is suitable to be loading into a 40ft container for convenient shipment and economic freight cost. For more information, pls contact with GN solids control.

The 9 inch bowl decanter centrifuge produced by GN solids control is widely used for waste water treatment for many industries, for example, GNLW223 centrifuge for the compact design 1m3/h oil sludge separation unit to separate the fine solids from oil sludge, GNLW223 centrifuge for the solids removal unit to separate the fine solids GNLW224EP-VFD decanter centrifuge with dewatering unit to separate the ultra fine solids from waste water.

The 9 inch bowl centrifuge is the smallest size decanter centrifuge GN produced, we also have 14 inch bowl decanter centrifuge, 18 inch bowl decanter centrifuge, 22 inch bowl decanter centrifuge, 30 inch bowl decanter centrifuge, which are used to separate the fine solids from drilling fluids, drilling cuttings, refinery tank bottom oil sludge, waste oil sludge, industrial waste water, mining tailings, and other chemical mixtures.
The difference between GNLW223 and GNLW224EP-VFD centrifuge:
1) Both of the bowl size is 9 inch, the bowl material is stainless steel 316, and the collection box material is also SS304. The screw material is SS304 by heat treatment up to 1000℃ for longer working life. The screw propeller is protected by the tungsten carbide tiles which is repairable. Same with the big size decanter centrifuge, the solids discharged port and fluids distribution port are both protected by interchangeable tungsten carbide alloy.
2) The bowl length of the GNLW223 centrifuge is 670mm or 26.4 inch, the bowl length of GNLW224EP-VFD centrifuge is 924mm or 36.4 inch, both of these 2 models with 15HP main motor, but GNLW223 series without back drive motor, the GNLW224EP series centrifuge with back drive motor 7.5HP, and the max speed of GNLW223 is 4500rpm, max speed for GNLW224EP is 5000rpm. The gearbox ratio of 223 centrifuge is 35:1, the gearbox ratio of GNLW224EP-VFD is 95:1.
For more details of GN mini centrifuge, pls contact with us freely.

One unit of 5m3/h oil sludge separation system is ready for shipment recently, the model is GNOST-05A. we also have GNOST-01A with 1 m3/h treating capacity, GNOST-15A with 15m3/h treating capacity for option.

As the most professional solids liquid separation equipments manufacturer in China, GN solids control can design and produce drilling mud solids control system, drilling cuttings treatment system, oil sludge treatment system, shaker screens. The oil sludge separation system can be used for refinery crude oil tank bottom cleaning sludge treatment, oilfield waste oil sludge treatment, oil contaminated earth and all other types of oil sludge.
The oil sludge separation system technical configuration is as below:

1) Sludge vacuum pump: this is a 100% air operation pump, no need electricity power supply. It has option for automatic and manual operation, the transfer rate could be 10m3/h, 20 m3/h and 40 m3/h. The max suction distance is up to 500m, and the max discharge distance is up to 1000m.
2) The shale shaker with internal spray system and cover to prevent the oil sludge from splashing to separate the coarse solids from the oil sludge, the shaker screen opening is 1mm or 2mm, the purpose is to protect the centrifuge screw.

3) The VFD decanter centrifuge to separate the fine solids from the oil sludge by working with chemical dosing system. The reason to use chemical jetting is to help the centrifuge to separate the oil from the solids more clean.
4) The 3 phase centrifuge to separate the oil from water, the oil is recovered by the refinery and the water is put into the circulation system. The decanter centrifuge should separate the fine solids as much as possible, otherwise it will block the 3 phase centrifuge.
If you need more information of oil sludge separation system, pls contact with GN solids control.

This week 10 units of VFD decanter centrifuge are shipped to our clients in Middle East, they are IEC EX certified for high configuration. With customized painting color, the centrifuge are also equipped with vibration sensor and temperature sensor to measure the operation temperature increasement and vibration during working.

We can provide decanter centrifuge with CNEX, ATEX OR IEC EX for different requirements of explosion proof, we can also provide different bowl size decanter centrifuge for option, from 9 inch, 14 inch, 18 inch, 22 inch and 30 inch bowl.
We have fixed speed decanter centrifuge and variable speed decanter centrifuge for option for different purpose. VFD decanter centrifuge applications are more widely as dewatering centrifuge, waste water treatment centrifuge, drilling mud cleaning centrifuge, oil sludge separation centrifuge and drilling waste treatment centrifuge, the fixed speed centrifuge is normally used for drilling fluids treatment in solids control system, if the user need to change the speed of the centrifuge, we can provide different speed pully and belts to reach different G force for different purpose.
The centrifuge bowl assy is the most important components for a decanter centrifuge. GN centrifuge bowl material is duplex stainless steel 2304 and the other part is made of SS316. The screw is made of SS304 material by heating treatment up to 1000 degree, the propeller is protected by tungsten carbide tiles, it is repairable, the fluids distribution port and solids discharge port is protected by tungsten carbide alloy for better wear resistance.
The decanter centrifuge, VFD control panel and feeding pump are installed on a telescopic skid for convenient transportation and operation.
This is the repeat order from the client, we are seeking to provide the best pre-sales suggestion, good quality and advanced technology equipments, best after sales service, welcome to contact with GN sales engineer for more information.

This week GN solids control participate in CIPPE 2019 successfully. We got positive feedback from our client for the oil sludge treatment system and pitless solution for oil & gas drilling.

The pitless solution also called zero discharge system for drilling rig, it includes water based mud and oil based mud, the design is very different. For water based mud pitless system, the main equipments are screw conveyor, high G drying shaker, VFD decanter centrifuge, dewatering unit and solidification unit.
The oil based mud drilling waste management system , the major equipments are screw conveyor or vacuum pump, vertical cuttings dryer, VFD decanter centrifuge, we have standard design drilling waste management system for option, with treating capacity 40 m3/h. As per the new environmental protection laws, it is forbidden to dig a hole for storage of the waste drilling fluids and oil waste at the drilling rig site. It is a pollution of ground water and earth, and hard to treat the waste after drilling is finished, you need to waste more money and more time. The better way is to treat the drilling waste timely by using pitless system.
The useful drilling fluids can be recycled to prepare for new drilling fluids, the discharged solids can be used for landfill or construction industry when it meets the disposal standard of the specific country.
We also showed our compact design oil sludge treatment with the treating capacity 0.5 ~1 m3/h, the main configuration including shale shaker, decanter centrifuge, three phase centrifuge, pre-mixing tank, fluids collection tank and chemical dosing system, oil tank and water tank, all the equipments are installed on one skid for convenient transportation and operation. We have bigger size oil sludge treatment system with 5 m3/h and 15 m3/h for option, welcome to send us your inquiry.