Tag Archives: Decanter Centrifuge

Hebei GN solids control GNLW364 centrifuge operation in municipal sludge dewatering project in overseas

In the realm of environmental technology, the efficient management of sludge and wastewater is a critical aspect that directly impacts the sustainability of our urban ecosystems.Hebei GN separation , a leading innovator in the field of separation and conveying equipment, has recently made a significant stride in the global market by delivering three state-of-the-art GNLW364 sludge dewatering centrifuge to a European municipal wastewater treatment plant. This innovative solution not only demonstrates GN’s technological prowess but also underscores the importance of sophisticated machinery in enhancing sludge treatment processes.

The GNLW364 decanter centrifuge operates on the principle of centrifugal force, a force that acts radially outward from the axis of rotation. As sludge is fed into the machine, it is spun at high speeds, causing the denser solids to separate from the lighter liquid phase due to the differential forces acting upon them. The machine’s design, featuring double-phase stainless steel construction and precision-cast components, ensures durability and optimal performance. The variable frequency drive (VFD) system allows for adjustable rotational speed, which significantly enhances the separation efficiency and minimizes the size of separated particles.

The use of advanced PLC control panels and sensors further contributes to the machine’s intelligence. These features monitor the equipment’s operational status in real-time, ensuring continuous optimization and preventing potential issues. The durable screw convyor and the carbon steel sleeve reduce maintenance costs, making the GNLW364 an investment that pays off in the long run.

The deployment of the GNLW364 in sludge dewatering projects in overseas showcases its numerous advantages. First and foremost, the motor is high efficiency, combined with wear-resistant material and advanced sensor technology, ensures stable and reliable operation, thereby maximizing the treatment capacity of the wastewater plant. The machine’s ability to handle a wide range of sludge types and concentrations makes it a versatile solution for various municipal administration and industrial applications.

Moreover, the GNLW364’s ability to simultaneously and dewater sludge, as well as treat wastewater and waste oil, highlights its economic and environmental benefits. By optimizing the overall process,GN 364 centrifuge not only reduces operational costs but also contributes to a cleaner environment. The company’s commitment to customization, as seen in their tailored solutions for food processing plants, underscores their dedication to meeting the diverse needs of their clients.

While GN is making strides in the global market, it is essential to acknowledge the contributions of other industry leaders like flottweg and Alfa Laval . Their offerings, such as Flottweg’s HTS Decanter® and Alfa’s ALDEC G3 VecFlow system. also exemplify the quest for energy-efficient and cost-effective solutions. These brands, alongside GN separation , are driving innovation in the field of sludge dewatering technology, continuously pushing the boundaries of what is possible.

In conclusion,the successful implementation of three GNLW364 decanter centrifuge in an overseas sludge dewatering project highlights the company’s commitment to technological excellence and customer satisfaction. The machine’s robust design, intelligent control systems, and adaptability to various sludge conditions make it a standout choice in the global market. As the demand for efficient and sustainable wastewater treatment solutions continues to grow, the collaboration between GN and other international brands, such as international brand, is expected to further propel the evolution of solid-liquid separation technology, ensuring a cleaner and greener future for all.

GN Solids Control for 2024 Beijing CIPPE Oil Equipment Show

CIPPE 2024 was successfully held in this spring in Beijing as scheduled. GN Solids Control has been attending this exhibition for 15 years ever since GN was established. CIPPE is the largest exhibition in the oil and gas industry in China, and also one of the largest in the world. It attracted visitors from the whole Asia and Russia.

As one of leading brands for oil and gas solids control manufacturers in the world, GN has a stand of 260 square meters, and as always, GN’s booth is at E2168. During years of restructuring of the whole market, some players in this industry has vanished and some news are emerging, while GN Solids Control is developing stably and rapidly, bringing to the market new designs and better solutions.

For this exhibition, GN brought to the booth following equipment:
1.Middle sized decanter centrifuge GNLW 363. Among all GN decanter centrifuges, this one is a middle sized one, but it is also the most popular model in oil and gas industry, especially for the waste management treatment for drilling cuttings.
2.Vacuum pump. It is not only used for oil and gas industry, but also for other functions in oily sludge treatment, sands, animal waste and etc. It is a powerful pump driven by air and the only size limit is the diameter.
3.Shale shaker and high G shaker. Shale shaker is one of GN’s core products, and also the mining vibrating screens, cause screening is always one of the most important way in the separating process.
4.A section of screw conveyor. It is an important auxiliary equipment in a waste management system, used for collecting and transferring cuttings between treating equipment. GN’s screw conveyors are self designed with some special features.

For this exhibition, GN also showed a centrifuge rotating bowl assembly. In this way, visitors can have a more clear view of the structure of decanter centrifuge. And it is a proud thing that all the producing of this highly rotating gentle part is made by GN.

For more information, welcome to contact GN team or visit GN factory near Beijing.

10 Sets Fully Hydraulic Drive Centrifuge for Drilling Mud to North Africa

GN Solids Control, the sister company of GN Separation, is one of the leading brands in oil and gas solids control industry. Just as the separation solutions GN Separation provided to clients, decanter centrifuge is also one of the core products GN Solids Control offer to the clients. Decanter centrifuge is a kind of efficient equipment for solids and liquid separation purpose, and each year, GN manufacture and sell around 200 sets of decanter centrifuges. Just recently, GN has delivered 10 sets of fully hydraulic decanter centrifuges to a client in North Africa.

GN has a wide range of decanter centrifuges, the bowl diameter sizes are from 9 inch to 30 inch, in order to achieve different capacities. And for each bowl diameter, GN has bowl length-diameter ratios of 3 and 4 for option, in order to meet the different applications. Considering the different control types, there are electric driven models and hydraulic drive centrifuges. Among the electric driven ones, there are fixed speed models and VFD models for option. This time, the client from North Africa chose the fully hydraulic drive centrifuges, 10 sets in one purchase.

Comparing with electric driven centrifuges, the hydraulic drive centrifuges are more fluent in operating and are more suitable for extreme conditions such like the high temperature ambient in Middle East and Africa. GN Solids Control is one of a few centrifuge manufacturers who can make the fully hydraulic control panels. Normally, GN makes the hydraulic control panels for the 14 inch bowl decanter centrifuges and 18 inch big bowls. GN Brand is quite popular among the centrifuge end users in oil and gas industry, waste water industry, and mining.

You can find GN products in more than 90 countries in the world. And if you plan to buy from GN, you can contact GN branch companies in USA, in Australia, and in Russia. Also you are welcome to contact GN partners in lots of other countries. Welcome to contact GN for the nearest contact or you can also talk to GN Headquarter directly.

GN Headquarter is located in Hebei Province China, with 3 factories. The newest one is also the largest one, with 80000 square meters’ area and advanced facilities as blanking machines, automatic welding and large sandblasting and painting.
For more information, welcome to contact GN directly.

Several Packages of Vertical Cuttings Dryer System for Overseas Client

Oil field equipment and systems are always one of the core products of GN Solids Control, which still occupies more than one third of GN Group’s products each year. For oil and gas industry, each year, GN makes and sells 250+ sets of shale shakers, 150+ sets of decanter centrifuges, and 50+ sets of vertical cuttings dryers. Recently, GN Solids Control just delivered 2 sets of waste management systems to Russia and 1 set of such systems for South America.

1. Vertical Cuttings Dryer. Comparing with shale shakers and decanter centrifuges, the vertical cuttings dryers are not so commonly known equipment, but in fact, in drilling cuttings waste management systems, they are quite practical, especially in case of oil based mud. GN’s first set of vertical cuttings dryer was designed and made into reality in year 2014, and it was soon recognized by clients and became popular all over the world. GNCD series vertical cuttings dryer can reduce the oil on cuttings to 0.5%.

2. Decanter Centrifuge. After the vertical cuttings dryer, there will be a decanter centrifuge to treat the fluids discharged from the vertical cuttings dryer, because there are still some fine particles in the drilling fluids at this stage. A high speed decanter centrifuge is efficient to remove the particles from 2 to 5 microns thoroughly. After the decanter centrifuge, the drilling fluids would be clean enough to be returned to the drilling procedure.

The combination of vertical cuttings dryer plus high speed decanter centrifuge is a must in many countries in the world considering the environment protection purpose. The recent projects GN manufactured are respectively made for Russia and South America. In fact, GN Solids Control has exported the equipment and spare parts to more than 90 countries in the world during the past 15 years. For the oil and gas solids control and waste management, GN can provide a turn-key solution from the consulting to manufacturing. Many world leading drilling companies and oil service companies are clients of GN.

GN Solids Control System for oil drilling to India Company

Solids Control equipment and system are always the core products for GN Solids Control. As is clearly shown, the Solids Control is the main parts in GN’s company name. Each year, GN designs and sells tens of complete solids control systems to lots of oversea countries. Sometimes, GN makes the equipment sets for a whole solids control system for clients to build up their own mud tank systems in their own facilities. This system is a complete drilling fluids solids control system for a client from India. It is a repeated order from GN old customer.

This drilling fluids solids control system contains following equipment:

1. Double deck shale shaker GNSZ706J. Shale shaker always shows up in the first stage to remove the largest share of drilling cuttings. Comparing with a single deck shale shaker, a double deck shale shaker can increase the treating capacity by 30%. The drilling mud falls onto the upper deck of shaker with comparably coarse screens for the 1st separation, then onto the lower deck with finer screens for the 2nd separation.

2. Vacuum degasser GNZCQ270. A degasser is used to remove the gas bubbles from the drilling mud. It can help to protect the pumps after the vacuum degasser. GN Vacuum degasser has a special design which doesn’t need an additional feeding pump. It is always located after the shale shaker and before the desander and it can also plays the role as a large mud agitator.

3. Desander GNWSJ-2S. This is a desanding unit without underflow shaker. It is fed by a centrifugal pump and is used to remove particles larger than 40 microns.

4. Desilter GNZS752-12N. Desilter cyclones are used to remove particles larger than 20 microns, and it is also fed by a centrifugal pump. This one is equipped with an underflow shale shaker with 2 pieces of screens.

5. Drilling fluids decanter centrifuge GNLW363D. Decanter centrifuge is used to remove the fine particles from the drilling liquid, ranging from 2 to 5 microns.

6. Mud tank system including centrifugal pumps and mixing hopper.

Based on your own standards and requests, GN team can give customized solutions.

A batch of GN Mini Decanter Centrifuges to be delivered to European Customer

Decanter centrifuges are widely used in various drilling industries for the separation of solids and liquid, including the oil and gas drilling, geothermal drilling, diamond drilling and pipe jacking. Based on different requested drilling capacities, there are different sizes of centrifuges for option. This time, for this European customer, GN provided a decanter centrifuge of 9 inch diameter bowl, which is the smallest model among GN Centrifuges.

1. GNLW223 Decanter centrifuge. It is also called a baby centrifuge among all GN centrifuge models. The length diameter ratio is 3, which is a typical value for drilling mud separation works. The largest RPM it can reach is 4500RPM, and it can efficiently remove all the particles from 2 to 5 microns.

2. Applications of GNLW223 decanter centrifuge. GNLW 223 decanter centrifuge is small but popular. It is widely used among GN clients in diamond drilling projects, geothermal well’s drilling, HDD projects and animal waste treatment. It is a compact model especially in North America and Europe.

3. Special design for this batch of GNLW223 decanter centrifuges. When the centrifuge is put into use, it should be put on a certain height in order to discharge the liquid and solids. That’s why there is always a skid, sometimes telescopic, under the decanter centrifuge. For this batch of decanter centrifuges, GN designed a small tank below the centrifuge, together with half height as the standing frame. The small tank could be a catch tank for holding the discharge liquid. While transportation the solids discharge chute can be folded between the tank and centrifuge. The tank is open top for easy observation and to clean. Near to the bottom, there is a port as drain port.

For more information, welcome to contact GN Separation directly.

How to Choose a Suitable Solution for a Drilling Waste Management System

According to the environment protection laws and regulations in many countries, the drilling waste management system is mandatory for a drilling rig’s solids control system. A complete drilling waste management system includes 2 systems, one is to treat the drilling cuttings discharged by the solids control shale shakers, which is used for reduce the cuttings for a safe discharge, and also for recovery of the drilling fluids. The other is drilling fluids waste management, which is used to remove the extra particles in the drilling fluids after a long time recycling in a solids control system.

1. Drilling cuttings waste management system. In a word, this system’s first mission is to minimize the cuttings to be discharged. Based on different mud type, the first separation equipment is different.

1.1. For oil based mud, which is used in most of drilling fields, a vertical cuttings dryer is more efficient. A vertical cuttings dryer is a high speed rotating machine which uses the centrifugal force to splash the liquid to through a mesh while the same mesh is used to block the cuttings. GNCD930 series vertical cuttings dryers can reduce the oil on cutting to below 5%.

1.2. For water based mud, a high G drying shaker is a better choice. It is similar as a shale shaker. And the main differences from a solids control shale shaker are: a high G shaker has a larger G force and the feeding of a high G shale shaker is like a hopper.

2. The second step for separation, for both the OBM cuttings and WBM cuttings is always a high speed decanter centrifuge, which is used to remove the finer solids particles in the liquid after the first equipment’s work. Unless a solids control centrifuge, this centrifuge for drilling waste management is always equipped by a VFD control panel, which is more flexible for variable mud condition.

Next time we will talk about the drilling waste management system.

Drilling Mud Solids Control Centrifuges for Africa Clients

Africa is a wide and beautiful land with rich resources including the gold mines and black gold mines, the crude oil. During exploration of the crude oil, the environment protection should be fully taken into consideration, for example, in the drilling mud, there are drilling cuttings to be removed and chemicals to be safely discharged. In this case, an efficient solution for solids control system is quite important. In all countries, the solids control system and drilling waste management system are legally requested.

GN Solids Control, as a professional manufacturer for decanter centrifuges and solution provider for solids control and waste management systems has been cooperating with many companies in Africa. This time, just in last week, GN Solids Control has provided to a client in Africa with a drilling mud solids control centrifuge.

What functions could a decanter centrifuge to serve in a solids control or waste management system for oil and gas drilling?

1. Decanter centrifuge are always located as the 4th stage for solids control, after the desilter cones. Before the centrifuge, there are shale shakers, desander cones and desilter cones, each has a smaller cutting point than last stage. A middle speed decanter centrifuge is always used for recover the expensive barite in the drilling mud.

2. If there is a 5th stage for separation as in many high configuration solids control systems, it should be a high speed centrifuge, too. This centrifuge is used to separate out the cuttings from 2 to 5 microns in the drilling mud.

3. As in many countries in Africa, where there is a drilling rig, along with the solids control system, there should be a drilling cuttings waste management system containing s vertical cuttings dryer and a decanter centrifuge. The vertical cuttings dryer is used to remove the oil on cuttings and the high speed centrifuge is used to remove the small particles in the recovered mud from vertical cuttings dryer.

Those above mentioned equipment are all within GN’s product range. Welcome to consult from GN Sales Team.

Two Sets HDD Mud Cleaning System for SINOPEC

HDD is a quite common way for pipeline works in cities or for pipelines across the rivers or so. This word is short for horizontal directional drilling. Just as other drilling, the drilling mud is to be used for HDD and the drilling mud should be well treated and prepared for reuse. A complete mud cleaning system for HDD always includes following steps for separation:

1. Shale shaker. In many mud cleaning systems or so called solids control systems, the shale shaker is always the first step for separation. It is used to remove most of particles and also the largest particles. In those 2 systems GN recently made for SINOPEC, the shale shakers are GNZS703F. This shaker model is quite popular in HDD projects and also used for oil and gas solids control systems. It has a screen area of 2.63 square meters provided by 3 pieces of shaker screens each sized 1250*700mm.
2. Mud cleaner. In fact, in an HDD mud cleaning system, there are always desander cones and desilter cones. Desander cones are of 10 inch diameter, which is used for removal of particles larger than 40 microns. And the desilter cones are of 4 inch diameter for removal of particles larger than 20 microns. A mud cleaner is a combination of desander cones and desilter cones, with a shared underflow shaker for drying.
3. A mud mixing hopper is a must for a HDD mud cleaning system, which is used for adding the loss components into the recycled drilling mud in order to prepare the drilling mud for the future drilling. A mud mixing hopper has a hopper and a centrifugal pump, the hopper can be located together with pump by the mud tank, or on tank top with the centrifugal pump on tank bottom.
4. A decanter centrifuge, which is not a must but quite efficient in high configuration systems. A middle speed centrifuge like GNLW452D is used to remove particles from 5 to 7 microns. And a high speed centrifuge is used to remove particles from 2 to 5 microns.
Welcome to consult GN for more information.

Equipment Used for Feeding and Discharging for Decanter Centrifuges

Decanter centrifuges are quite important and efficient equipment used for separation of liquid and solids only second to the shale shakers. By the high G force generated by the high speed rotating of centrifuge bowl, the liquid will be splashed and the solids phase is to be pushed out. For achieving a satisfactory separating result, we have to make sure there are suitable equipment for feeding the decanter centrifuge and some other facilities for discharge.
Decanter centrifuges request for stable feeding, so some pulse pumps are not suitable for feeding the centrifuges. The pump shall provide stable feeding capacities. And it would be better if the feeing volume can be adjusted as per the centrifuge speed.

Normally, based on rich experience as a decanter centrifuge manufacturer, GN Solids Control normally suggest those two pumps for centrifuge feeding as below:

1. Screw pump, which is a kind of Mono pump. Inside the screw pump there are one stator and one rotor and the comparative move between them provides stable feeding volume for the centrifuge. GN VFD centrifuges’ control panels can include a control panel for the centrifuge feeding pump.

2. Submersible slurry pump is also used for centrifuge feeding purpose, mostly for constant speed centrifuges, especially when the centrifuge is located on a tank and when the tank’s space is limited.

GN has both pump types available for matching different centrifuge models.

For centrifuge discharge, normally the liquid phase after separation will flow directly to its containers with a level difference. That’s why the centrifuge is requested to be mounted on a certain height, for example, on a tank or on a skid. The solids phase discharged by the centrifuge can flow directly via a chute or be carried out by a screw conveyor below the centrifuge.

For more information, please contact renee@gnsolidscontrol.com.