Desander   Desilter

GN Solids Control last week finished one batch of 4 sets 9 inch bowl centrifuges for one European core drilling company, very soon they will be shipped to customer and GN will have another happy customer as well.

GN Solids Control has been designing and manufacturing decanter centrifuges for decades by professional engineers who have deep understanding and also rich onsite experiences. Every year, GN Solids Control manufactures around 60 sets 9 inch bowl decanter centrifuges, most of them are used in core drilling or diamond drilling industry, and some are used for small scale lab volume treating and testing. 

GN Solids made 9 inch bowl centrifuge is also called GN baby centrifuge as it is the smallest bowl centrifuge we build. The bowl is duplex stainless steel made by centrifugal casting, and protected by tungsten inserts and scrapers for long time anti weariness. GN Solids Control centrifuge is also optional to fix with temperature sensors and vibration switches so the two main bearing blocks’ temperature and the centrifuge vibration can be monitored on GN HMI control panel.

As for these 4 sets GN 9 inch bowl centrifuges, GN Solids Control provides a compact mud stand to fix the centrifuge with a certain height skids. After separated liquid can be stored in the bottom mud tank easily.

These 4 sets centrifuges are all fixed speed electric driven units, drilling company will provide a diesel generator to provide power. All systems are designed and build in a compact manner, convenient to move and relocate with the drilling rig.

Besides these 9 inch bowl centrifuges, GN Solids Control also manufactures bigger bowl centrifuges, such as 14 inch, 18 inch , 22 inch and 30 inch. Different bowl centrifuges are widely used in different industries. Please feel free to connect with GN Solids Control for any centrifuge inquiries.

GN Solids Control is a world leading manufacturer of solids and liquids separation equipment and turnkey solution provider, one of the most typical product for GN is shale shaker which are largely used in thousands of drilling rigs sites. These days, GN Solids Control engineers finished the upgrading and testing of the new J version solids control shale shaker, and some sets have already been delivered to GN overseas customers.

Shale shaker is the first treating equipment when we speaks of large particles remove, by fixed with different cut points screens from API 10 to API 325, GN shake shaker is able remove solids in large variety range.

Compared to the previous version of GN shale shakers, here are the main advantages for the J version shaker:

1.Patent structure of sealing rubber on the shaker deck, excellent anti-weariness, longer using life but more convenient to replace.

2.Convenient to assemble optional anti-spraying device on shale shaker and mud cleaner.

3.Convenient to modify to vacuum screens unit by adding GN ViST.

4.Much easier to adjust the shaker deck working angle, and fast lock after adjusted.

5.Stainless steel shaker deck supporting beam, last longer when using for offshore drilling rigs.

6.High strength vibration spring, excellent working performance with long using life.

GN Solids Control now manufactures around 250 sets to 350 sets shale shakers every year, most of them are using in oil and gas industries, and some are used on environmental protection industries, such as hydrovc slurry dewatering, mining slurry dewatering, diamond/core drilling mud recovery etc.

Besides the shale shakers, GN Solids Control also builds some other solids and liquid separation equipment such as decanter centrifuge, cuttings dryer and transfer units like screw conveyors, solids transfer pumps, screw pumps etc. GN experienced engineers are able to provide the most cost-effective solution for your solids and liquid slurry treating.

GN Solids Control is a leading construction mud treatment system provider with customers from over 85 countries and regions. Several weeks ago, GN engineer visited one Australian construction company and got a very positive feedback on the GN mining vibrating screen and decanter centrifuge’s excellent working performance.

1.GN Mining Vibrating Screen

GN Solids Control manufactures different types of vibrating screens, such as dewatering screen, classification screen, stack vibrating screen, large linear vibrating screen, large banana vibrating screen etc.

GN Solids provides one sets of dewatering vibrating screen for this Australian construction company who owns more than 20 sets hydrovac trucks that can bring min. 100 tons slurry or waste from different sites.

This vibrating screen is especially designed to remove big particles larger than 2 mm before feeding into GN fine shaker unit (includes a double deck fine shaker and a desilter). A big catch hopper is able to collect two hydrovac trucks to dump at the same time, and a manual control gate valve to adjust the dump feeding volume into the big vibrating screen.

2.GN Decanter Centrifuge

GN decanter centrifuge is especially designed to remove the finest particles from the hydrovac slurry, with a big G force upto 3000 G, silts larger than 2~5 microns can b recovered.

As for this construction company, GN Solids Control provides one 22 inch bowl decanter centrifuge, which is able to treat at least 30 m3/h slurry with 20 % solids content. To help the centrifuge use a long time without weariness, GN Solids Control use tungsten scrapers and inserts to protect the solids discharge ends. Optional flushing lines can be also built on the centrifuge’s collect box to flush the solids discharge ends and reduce the solids abrasion.

GN Solids Control has rich experience to provide solids and liquid separation for varieties industries, welcome to reach to GN for the most cost-effective solution.

 GN Solid Control is a top brand solids and liquid separation as well as conveying equipment manufacturer based in China with 3 manufacturing plants includes 2 close to Beijing International Airport. Last week GN Solids Control shipped another batch of waste sludge treating equipment to one Asian client. 
 
As we all know that sludge is hard to move after sediment especially when it has been stocked for many days, while GN Solids Control has one sludge transfer pump which is the vacuum pump that can move all high solids content and large viscosity materials. 
GN vacuum pump is an air driven united, during work it is connected with an air compressor. As long as the solids size is smaller than the feeding port, it can be moved by GN vacuum pump, such as aggregates, oil sludge, chemical powers etc. 
GN Solids Control uses one 40B vacuum pump to suck the sludge from the waste pit and dilute it with water before feeding into GN decanter centrifuge as usually solids less then 20% can be treated. And another point we need to consider is in order to have a better and consistent treating performance that an even materials is ideal to feed into centrifuge. 
 
GN Solids Control has been provided thousands of decanter centrifuges in the world, especially in the oil and gas industry for the drilling mud solids control and drilling waste management area. GN Solids Control also builds environmental protection centrifuges with different half cone angles, length and diameter rates etc to achieve the dewatering, clarfiying and thickening treating demands. 
Usually centrifuge is feed by a screw pump, so the feeding flow rate is linear and can be also adjusted easily on the HMI of the VFD box. Welcome to connect with GN Solids Control, here we always have the right cost-effective solution for you.

GN Solids Control just shipped to a offshore drilling company of 18 inch bowl decanter centrifuge and mud agitators last week. As we all know, GN Solids Control provides both on shore and offshore drilling mud solids control equipment and waste management systems, with these years fast development, GN Solids Control becomes one of the most cost-effective solids control and waste management equipment provider in the world.  

GN Solids Control made decanter centrifuges has been widely used in more than 85 countries and regions, especially using in oil and gas industry although GN centrifuges are also used in environmental protection industry. Usually offshore drilling platform demands much higher standard when use the drilling solids control system and drilling waste management systems, such as all the equipment should be designed and manufactured according to DNV standard. 
GN offshore drilling mud solids control decanter centrifuge is fixed with DNV lifting certificated skid to protect the centrifuge from falling off into the sea. Here GN Solids Control shipped one set 18 inch bowl decanter centrifuge, beside 18 inch GN Solids Control also manufactures 14 inch and 22 inch bowl centrifuges for the drilling mud solids control and drilling waste management. 
 
Drilling mud is very important in the offshore drilling platform, one main function is to keep the drilling rig function well. However to reduce the drilling cuttings or reuse the drilling mud is also very important, as shipping cost is huge for large volume transporting. Use decanter centrifuge to recover effective drilling mud with 2-5 microns and dewater the drilling cuttings is the main target. 
Besides the drilling mud decanter centrifuge, GN Solids Control also shipped some sets of heavy duty mud agitators to this offshore drilling rig. All mud agitators are fixed with lifting pad eyes for offshore movement. 
 
Welcome to connect with GN Sales Engineers for your drilling mud solids control and drilling waste management demands, we always have the right solution for you.

This week, GN completed the factory test and delivery of one set decanter centrifuge GNLW364ET-VFD, which will be used for sewage treatment in a foreign meat processing plant.

Decanter centrifuge is commonly used solid-liquid two-phase separation equipment. In the production process of many food plants and meat products plants, some sludge is often generated. This kind sludge cannot be directly discharged into the municipal sludge drainage pipeline. Dewatering treatment is required in advance to separate as much solid substance as possible to obtain relatively dry sludge, which is convenient for subsequent transportation and further drying treatment.

GN Sludge Dewatering Centrifuge is driven by dual motors, and the dual motors use the DC common bus operation principle, which can save energy consumption during equipment operation. The rotating assembly of the decanter is composed of a rotary bowl and an internal screw propeller. Slag is discharged through the speed difference between the bowl and the propeller. The bowl speed and differential speed can be set on the touch screen of the variable VFD control panel equipped as standard by GN according to different material conditions and treatment effects. The frequency converter of main and auxiliary motors is equipped in the VFD control cabinet to start smoothly and protect the motor. According to the customer’s requirements, the frequency converter of the slurry pump can also be equipped to control the feeding speed.

In terms of structural design, GN sludge dewatering centrifuge places two motors at one end of the equipment, and the other end is arranged with feeding tube. This structure is easy to install and maintain, and can also provide operators with equipment operation space.

There are many organic substances in the sludge generated during the processing of meat products plant, which has strong water absorption and is difficult to separate. If you want to achieve better separation effect and clarified liquid, you need to use high-performance flocculants to flocculate the sludge in advance. Then, in the process of separation, it is necessary to select an appropriate differential speed to discharge the solid phase from the bowl. The chemical dosing unit of GN Company is often used in the sludge dewatering production line. Because of its excellent performance, it is adopted by many users.

Recently, GN sent a screw press to customer from Southeast Asia for wastewater treatment in textile plant. This equipment in this order is used as a trial unit to verify the applicability of the equipment. Therefore, the customer has chosen the smallest model in the GN product series. If the site operation is successful, the customer will order large model to meet industrial production.

The screw press is a compact sludge dewatering equipment, which is favored by many users because of its high degree of automation, low noise and low energy consumption. Generally, the screw press is structurally composed of two parts, the sludge flocculation bin and the dewatering assembly. The flocculation conditioning bin is used to receive the sludge to be treated and the chemical solution coming from polymer dosing unit. The sludge after flocculation naturally overflows to the dewatering assembly. After thickening and dewatering in the chamber composed of discs and screw, a relatively dry sludge cake is finally formed and discharged from the slag discharge port.

GN screw press machine uses SS304 as the shell of the equipment, the floating ring and the static ring, and the agitator in the flocculation bin. According to different properties of sludge to be treated, GN can also provide SS316 and duplex SS2205 with better corrosion resistance. In the control cabinet of GN screw press, the motor of the dewatering screw is equipped with a frequency converter, which can adjust the speed of the dewatering screw. If there is material blockage inside the screw, the screw can also be reversed to eliminate the material blockage.

Compared with the dewatering decanter centrifuge, the screw press has lower energy consumption and noise, and has better environmental friendliness in actual work; and compared with the filter press, the screw press has higher automatic working performance and operation convenience.

GN Solids Control has been focusing on solid and liquid separation for many years, and one of the most important product is transferring pump to move the materials into GN made shale shaker, desitler, desander or decanter centrifuge and cuttings dryer. 
GN Solids Control manufactures different types of pumps include vacuum pump, centrifugal pump, submersible pump and screw pump. Among them, GN vacuum pump is largely used to move high solids content and large viscosity materials. 

This week, GN Solids Control finished manufactured manufacturing of 5 sets vacuum pumps includes 3 sets 40B and 2 sets 20B for one oilfield service company to move drilling wastes. 
GN Vacuum Pump is an air driven pump, one Air Compressor is demanded to provide constant and stable air in order to have a certain working pressure and airflow rate. GNSP-40B is able to move 40 m3/h (flow rate varies for different materials), and GNSP-20B can move up to 20 m3/h. 
GN Solids Control manufactures 3 types of the vacuum pumps if classified by the flow rate. 40B is the largest one, which is frame design structure, lifted by crane or moved by forklift. While 10B and 20B are both mobile unit with wheels, can be moved with the materials site change. 
GN made vacuum pumps have been widely used in the following working sites:

A.Drilling Cuttings Transfer

B.Mud Tank Bottom Sludge 

C.Drill Platform Mud or Cuttings

D.Environmental Protection Waste Mud Pit 

GN Solids Control has provided vacuum pumps for many oil service companies and help to reduce the labor cost largely and bring high working efficiency to move the drill cuttings quickly movement. 
ATEX certified vacuum pump can be also provided. GN Solids Control also opens to provide customized color or labels for our customers. Any special solids and liquid separation and moving demands, GN Solids Control always has a right cost-effective solution for your.

GN Solids Control just finished manufacturing and testing of one set 1000HP drilling rig solids control system for one Middle Eastern company who will use it in New Zealand next month.
With the rich experience on oil and gas drilling mud solids control and drilling waste management, GN Solids Control is proud to have another successful 1000 HP drilling rig solids control system for a happy customer. So below are the treating equipment in this mud solids control system:

1.GN Shaker Tank
Shaker tank is divided into shaker compartment, desander compartment, and desilter compartment. Two parallel shale shakers connected by a pipe line type mud distribution box to convey the drilling mud on to shaker screens evenly, so the big particles can be removed before feeding into cyclones.
For convenient control, manual butterfly valves are fixed on the main ports so they can be turned on or off to change the mud flow. And a mud cleaner fixed with desander cyclones and destiler cylones can be also used to run accross the cyclones and play as a 3rd unit shaker in case the suddenly mud flow rate increase.
Two centrifugal pumps fixed on the side of the shaker tank to feed into desander and desilter separately.

2.GN Mud Storage Tank
Two storage tanks are laying parallel to the shaker tank from where the after treated clean mud are moved. Every mud storage tank is fixed with 3 units mud agitators to keep the mud from settling.
A customized big jet mud mixer is used to add new drilling chemicals or additives from the mud hopper where standing platform is used to carry big bags. And two parallel centrifugal pumps are connected with the venturi hopper, either pump can be used as the feeding pump.
Besides the above mentioned main module, GN Solids Control also provides some auxiliary parts like mud gun, light etc. More importantly, all the explosion proof standard control boxes are also provided by GN Solids Control.

Oil contaminated soils is one of the most difficult materials in order to reuse the soil and oil, as a leading Solids and Liquid Separation Equipment manufacturer, GN Solids Control is especially good at providing oil contaminated soil washing and separation equipment.
Last month, GN Solids Control finished all the testing of one Oil Contaminated soil washing and separation equipment for one Middle East customer before leave factory. This turnkey solution is mainly composed by the following product:

1.Soil Washing Modular
Soil was feed into a GN catch hopper unit, which is fixed with large openings bars to keep the big particles from the shaker. One big coarse shaker is underneath GN catch hopper to remove solids larger then 10mm by using PU screens.
GN screw conveyor is used to move the soil either to a Crusher or to cuttings box. The Crusher is able to feed materials with max. 120 mm and discharge to 15mm. To protect the damage made by fine metal cuttings, one ditch magnet is fixed on the screw conveyor inlet or outlet.

2.Vacuum Pump Transfer Unit
GN Vaccum Pump together with one AC is able to move all the soils or aggregates from the oil contaminated soil. Pipe lines are connected with feeding hopper or pre-heating modular can be changed by turn on or off the valves.

3.Pre-heating & Mixing Modular
To help improve the separation efficiency, it is necessary to use a pre-heating and mixing modular. Here it is composed by 2 mixing tanks with steam hot pipe lines along with the tank, which also fixed with mud agitator to keep agitating the soil.
4.Shaker Separation Unit
One double deck shaker fixed with API 20 or API 40 screens help to remove most of those fine particles after heating.
5.Decanter Centrifuge Separation Modular
In order to remove those finest solids above 2~5 microns, GN Solids Control use 22 inch bowl decanter centrifuge GNLW553-VFD and one 3 phase disc-separator to further separate the oil, water and solids.

6.Chemical Dosing Unit
One automatic chemical dosing unit is provided to add chemicals into the pre-mixing tank and decanter centrifuge.