Oil Sludge processing system

GNSX-450 is a three phase decanter centrifuge. The bowl size of GNSX-450 three phase decanter centrifuge is 450mm (18 inch) diameter by 1800mm in length. It is designed for 24 hours continuous and smooth operation throughout the day. It is mainly composed of driving system, decanter bowl, and screw conveyor inside the bowl, cover box, skid and VFD control panel.

Working principle of GN Solids Control 3 phase decanter centrifuge

GN Solids Control 3 phase decanter centrifuge is mainly designed and made for liquid, liquid and solids separation. GN Solids Control 3 phase decanter centrifuge can also be applied to two immiscible liquids with different specific gravities. When the solids and liquid mixture (raw material before separation) rotates into the high-speed rotating bowl internal the 3 phase decanter centrifuge, the solids and liquid mixture rotates synchronously with the drum. As the reason of the different specific gravity, the centrifugal force of the solids and different liquid is different.

The solid particles which with the larger specific gravity are subjected to the greatest centrifugal force, followed by the heavy phase liquid (such as water) and the light phase liquid (such as oil). So the centrifugal force is becoming less from outside to inside according to the magnitude of centrifugal force. A concentric solid layer and two liquid layers are formed.

The Solids phase inside the mixture will be pushed out by the conveyor impeller of the centrifuge bowl, and liquids are removed from their respective nozzles depending on different gravities. As the reason, GN Solids Control three-phase decanter centrifuge can not only separate the solid from the solids and liquid mixture, but also separate the two-phase liquid with different specific gravity in the liquid and liquid mixture. In this case, Solid / liquid / liquid separation can be achieved.

Besides 3-phase decanter centrifuge for oil field and non-oil field, GN Solids Control has other separation equipment to cater for different application, like shale shaker, mud cleaner, desander, desilter, degasser, transfer pumps, drilling waste management equipment, etc…

GN Solids Control is specialized in drilling mud solids control and waste management solutions. GN Solids Control is capable to design and make Oil Water and Solids Separation System to treat and recover various kinds of waste materials.

GN Oil Water and Solids Separation Systems are capable to treat below waste materials, but not only limited to below materials:

1. It can be used to treat oil sludge and oil, oil contaminated soil remediation, like from drilling waste pits, or from pondsand tanks
2. It can be used for water oil contaminated water-control and recovery
3. It can be used to treat waste oil and recover the oil to reuse
4. It can also be used to treat waste oil, water and solids mixture, and to recover oil, water and reduce the solids waste

Oil sludge means the waste mixture consisting of oil, water and solids. Oil water separation system is used to treat the oil sludge in order to reduce waste material, and recover oil and water for reuse. The oil sludge treatment system is also a popular solution to treat oil contaminated soil and sands.

Oil sludge is a mixture consisting of oil, water and sands. The treatment on oil sludge would recover much oil and water for reuse. Also it is an ideal solution to for the solids disposal. More oil and water recovered, more energy and resource could be saved. GN oil sludge treatment products mainly include decanter centrifuge, oil water separators and thermal desorption unit.

As many customers did not do waste management system before. To ensure GN Oil Water and Solids Separation Systems can applied for their applications, GN Solids Control specially designed a one-skid compact Oil Water and Solids Separation System for trial purpose. GN one-skid Oil Water Solids Separation System is in stock for sale. Clients can buy the small system as trial base to show to their clients their capacity to do the projects. For clients in China, they can choose to buy or rent the one-skid system.

If clients do not want to buy the one-skid compact Oil Water and Solids Separation, they can send their oil sludge or waste material to GN Solids Control. GN Solids Control can do the separation at GN factories and show clients the performance. After separation, GN Solids Control can do lab test and show the final output specs to the clients.

 

This week, a package of oil sludge treatment system was departed to an oil field service company in China. The unit will be used to recovery oil sludge from oil base drilling cuttings. The oil sludge treatment system including below items:
1) 2 phase decanter centrifuge. Material fed to 2 phase decanter centrifuge must be with solids content Less 20% and Particle Size less than 20mm.
2) 3 phase disc centrifuge. The solid phase material entering the three phase disc separator usually shall be reduced the solid content to less than 3% and the solid particles to less than 400 micrometers by the decanter centrifuge, then the three-phase disc separator can achieve the best effect.


3) Transfer pumps
4) Dewatering chemical dosing system with dosing pumps and automatic control system
5) Transfer tank and holding tanks for mud recovery and mud transfer.

The project is for processing oil and solid wastes in sludge storage tanks. After the oily sludge wastes have been pre-treated. After the oil sludge wastes have been treated by sieving, sand washing, demulsify, and finely screened, they have now achieved reductions and preliminary separation. After that, the oily sludge will be treated for three-phase separation.

Two phase decanter centrifuge and three phase disc centrifuge is used in the three phase separation process. After three phase centrifuge separation, the final outputs are soil, oil and water.

Chemical dosing system is used before 2 phase and 3 phase centrifuge separation to help for the removal of as more fine solids as possible.

Besides 2 phase decanter centrifuge, 3 phase disc centrifuge and chemical dosing sytem, GN Solids Control also offers other oil sludge treatment and transfer equipment, like 3 phase decanter centrifuge, high G drying shale shaker, mud cleaner, Vertical cuttings dryer, Drilling Cuttings Solidification Unit, Thermal Desorption Unit (TDU), oil water separator, sludge vacuum pump, screw conveyor, etc…

Recently, GN Solid Control has completed the design and manufacture of a set of oil sludge treatment system for an oil field environmental protection company in China. Since the oil sludge treatment system was launched on the market, it has been widely concerned by customers no matter in China or outside of China, and the feedback from the on-site operation of the market is good. More and more oil field environmental protection contractors inquire and order the system as an important solution to reduce the content of harmful substances in oil sludge efficiently and economically.

The oil sludge treatment system has two separation principles: chemical dosing and physical separation after heating. GN oil sludge separation system is composed of several modules with different functions to gradually recover water and oil from the sludge. The following is a brief introduction of the system:

1) Sludge vacuum transfer pump module – the sludge from oil-based mud drilling cuttings has high viscosity and high sludge content, which requires a powerful and efficient conveying device to suck the sludge out of the mud pit and feed to the oil sludge treatment system. GN sludge vacuum pump is a fully pneumatic pump with no electrical components and does not produce any sparks in use. it is especially suitable for oil and gas explosion-proof environment. With 85Kpa vacuum, the viscous sludge can be sucked and discharged to other place far away.

2) Pre-mixing module – before the sludge is fed into the separation module, the material needs to be homogeneously mixed to more than 80% of the liquid content. At the same time, in order to enhance the separation effect of oil and mud, it is necessary to add chemicals in the process of homogeneous mixing.

3) Separation module – GN Solid Control uses different separation equipment to separate oil and water from the sludge step by step. High G force shale shaker, 2-phase decanter centrifuge and 3-phase disc centrifuge are used in the Separation module.

This week, a full package of compact oily sludge separation system was finished from GN factory in Beijing China. The compact design fast movable oily sludge treatment system is purchased by a reputable Environmental Solutions Company from China domestic market.

There are 3-stage separation equipment included in the oily sludge treatment system.

1) There is a 2-panel small footprint shale shaker equipped in the system for coarse solids separation. The model is GNZS752. As mostly, the oily waste come out from different sources and it is mixture of different wastes. There may be big size solids in side. The big sides solids may block or even broken the centrifuges. The small size shale shaker is used to remove the possible big size solids in the sludge.

2) There are 2 centrifuges in the oily sludge treatment system. The first centrifuge we call it decanter centrifuge. The decanter centrifuge model is GNLW224, it is a 2-phase separation centrifuge. The 2-phase decanter centrifuge is help to remove solids or soil from liquid mixture. The 9 inch centrifuge is a min size decanter centrifuge. The bowl diameter is only 9 inch, but the bowl length and diameter ration is up to 4. The longer ration can help to get cleaner liquid. It is the smallest centrifuge from GN Solids Control for industry separation.

3) The second centrifuge inside the oily sludge treatment system is disc centrifuge. It is also called 3-phase centrifuge. As the name mean, the disc centrifuge can separation oil, water and soil.

Many people may wonder: in case the disc centrifuge can separate and get oil, water and soil. While you add 2-phase decanter centrifuge inside the system? Really, the 2-phase decanter centrifuge is surely not to increase the cost. The disc centrifuge can only allow liquid mixture with liquid content less than 3%. Otherwise, it will damage the centrifuge. While the decanter centrifuge can allow liquid with solids content up to 15% ~ 20%. Decanter centrifuge is a necessary as pre-separation before disc centrifuge.

Thermal desorption unit is normally known as TDU. It is a kind of Ultimate equipment for oily waste management. The Thermal desorption unit (TDU) is a High-tech products, few company has the capability and technology to make it.

GN Thermal Desorption Unit is an ex-situ, non-incineration technology. It is designed to separate hydrocarbons from various matrices including oilfield drilling cuttings waste, oil based drill cuttings, oily contaminated soil, oil sludge and sand, filter-cake, tank and tanker bottoms, organic-based hazardous waste and contaminated soil in a non-oxidizing atmosphere without destroying the hydrocarbons. The TDU technology has been used extensively for waste management, the main function is for recovery of the oil from the waste material as a sellable product throughout the world.
Many clients showed great interest on the design of GN Thermal desorption unit (TDU) technology. There are mainly 2 designs developed by GN Solids Control.

From 2015 to June, 2016, GN Solids Control have been working on the design of the drum type TDU. But GN stopped that project after 2016. After that GN Solids Control shift to design the screw type TDU from July, 2016. So now, GN Solids Control does not make drum type Thermal desorption unit (TDU).

GN Solids Control latest design on is similar to TPS, but not TPS, TPS is a single screw in one tube, with different tubes.

GN Solids Control design is as following:
1) One tube, two auger system for self cleaning, it’s better than the single tube system.
2) Temperature can go up to 700 C degree which suits the drilling cuttings and oil sludge to recovery oil and water.
3) GN Solids Control have a dust removing unit before condensing, so it makes it easier for oil water, solids separation.
GN Solids Control already have the major components, like tube material, burners, air lock valves and Fin-Fan coolers etc in the factory to shorten the manufacturing time.

For any questions, please contact GN Solids Control sales team for support.

GN Solids Control is the world’s leading manufacturer of solids control equipment and mud recovery systems. As a leading manufacturer of shale shakers, mud cleaners, decanter centrifuges, cutting dryers, centrifugal pumps, etc., GN’s brands and products are available. More and more international customers are recognized. The GND system consists of a two-layer mud shaker, two hydrocyclones, a centrifugal pump, a tank and an electrical control system. The system can effectively separate solids and liquids, reduce the solid waste content in the drilling mud, make the cuttings drier, easy to transport, environmentally friendly and easy to handle. The entire system is very compact and armored, very economical and value for money.

We have been working hard to develop different markets for our Oil Sludge processing systems. The scope comes from waste management companies, drilling waste treatment companies, and oil companies and oilfield service companies. The first stage separation of the system is a two-layer mud vibrating screen. When the mud enters the lower layer of the screen, large solids will be separated from the mud. Fine solids and mud will fall into the tank, and the mud will pass through the centrifuge. The pump draws in two hydrocyclones that work like a sand remover to separate the solids size to 40 microns. The solids separated by the hydrocyclone will fall onto the upper deck of the shale shaker and the solids will be further dried for disposal. The clean mud separated by the hydrocyclone will fly back to the tank and be pumped back to the wellbore for reuse and recycling. The basic configuration of the mud recovery system is a two-layer mud shaker, two hydrocyclones for sand removal, a centrifugal pump, a mud tank and some other components. Visit our website at www.gnsolidsamerica.com for more information, please send your questions to USA@gnsolidscontrol.com