GN has focused on the solids control and separation industry for many years, we do have much experience for various material treatment. GNLW224 Decanter centrifuge is one kind small treating capacity device, which has GNLW224EP,EY and EC. All the three kind have the same rate of length/diameter4.2：1. the difference is the cone angle of bowl and the distance between screw. This serious have wide application ,waste water treatment,chemical material separation,fruit juice  separation, and also some other industry for material separation.

The structure of machine

The Decanter include main assembly ,power transfer assembly ,feeding ,base and electrical control. The main assembly contain the centrifuge bowl, scroll. And the bow is columnar, bid end has 4 discharged port for liquid, and the wire of port is adjustable to control the liquid deep inside of the bowl. The small end has 6 discharge port for solids.  When machine working ,the screw push the solids forward through different rotate speed. And insert the anti-wear tile in the screw for long lifetime.

Feeding part include feeding pipe,flashing pipe and solids discharge flange. Every pipe are connected with vale to change the feeding and flushing. Feeding pipe is same bearing with centrifuge bowl. Material through feeding pipe get into inside of decanter. And the material will distribute on the wall of centrifuge bowl under the centrifuge force. And then the water and solids will be separate into different layer because different density. The higher density material will bear bigger force and sink on bottom. The flushing pipe is used to feed clean water. We must clean the decanter centrifuge every time after finish work. To flush out the residual solids. Otherwise ,the solids will make the decanter loss balance when turn on in the next using.

The electrical control panel has normal and explosion-proof the two different type. As usual,the explosion-proof will be used on oil well drilling ,chemical material separation industry. EY,EC,EP are used for different separation target. If your project have demanded on decanter centrifuge ,welcome to contact us for more information.

As we all know, GN is famous with the solids control equipment, and we have served the oil gas industry for more than 15 years. Our equipment is very popular in different country because the excellent quality and quickly after sale service. Solids control equipment is main used to treat the drilling slurry, not only the oil well drilling ,but in some HDD project, tunnel boring project also will use drilling slurry. We are also full experience to treat these drilling mud. Last week we provide the big centrifuge bowl decanter centrifuge for tunnel boring project.

Tunnel boring machine is widely used for the subway project and mountain tunnel. When it work,the machine need to large mud to cool the rig and the mud will carry the drilling cutting out the tunnel. The normal small decanter is not enough to separate so large drilling mud. It must used the big capacity. GN 764 decanter centrifuge is the biggest model of GN, which centrifuge bowl is 30 inch, and the capacity is 120m3/hour. It is a good choice for these big project.

In this project, client require that the recycled water must be very clear to reduce the water consume. And also the discharged will be convenient to transport and further treatment after dewatering. To reach this target, we add combine chemical dosing in this system to add flocculant, which can combine the tiny solids into big, which will be helpful to decanter to separate out the solids. Form the photo you can the discharged water is very clean and can be directly reuse.

In the modern project, we have to reduce the consume of water source, protect the surrounding environment. Decanter centrifuge is good choice for the waste management. GN not only provide the decanter centrifuge ,but also the whole solution for various project. Such as the solids control system for well drilling, mud system for HDD, Mining slurry treatment. You will be welcomed to contact us for more information.

As we all know GN has two main business, one is solids control and the other is waste treatment. Both are need the separation equipment to remove out the solids from material, and recycle the water or oil as much as we can. There are so many different kind sludge, so sometimes we need to choose some chemical medicine to mix with slurry to get the best separating effect. There are 3 kinds most common chemical medicine, they are surfactant, flocculant and demulsifier.   

With the different separation target, we should choose different combination of medicine. If the decanter centrifuge only include the water and solids, and the solids particle size bigger than 5um, sometime we do not need to add chemical ,because the solids content will less than 3% after treatment by decanter. Or we can raise the rotate speed of decanter to improve the G force to get the more better separation performance. But when the particle size smaller than 5um, we need to add into flocculant to combine tiny solids into big particle to help the centrifuge separate well.

For some high solids content material with oil water. As usual, this kind material is low liquidity, the oil and solids also combine together. We need to add the surfactant first and clean water to attenuation. After that we could treat the slurry by shale shaker to remove most solids and get the liquid. Then we need to add demulsifier ,which can strip the oil from solids liquid, and this reaction is finished in the material. After that feed the liquid into decanter centrifuge. Our decanter can separate out 95% solids. The liquid discharge from centrifuge, which main include water,oil and solid (less than 5%). In the end, we need to add the flocculant to combine the tiny solids into big ,this will help the disc centrifuge to remove out almost all solids. After disc centrifuge treatment, we can get the 3 phases separation,oil ,water and less solids.

For some complex material, testing in advance is always necessary, if your have the separation project ,welcome to contact us, we will be pleased to share our experience.

GN has focused on on separation industry for more than 15 years. At beginning, we main served the oil gas industry to help our client treating the drilling mud, such as the shale shaker, mud cleaner, decanter centrifuge. With the company development and the technology accumulation, we have developed many different kinds separation machine for different application. Such as the screw press dewatering machine. Last week we delivered our 201 models screw press to our customer from Peru.

Screw press dewatering machine is different decanter centrifuge. Decanter centrifuge utilizes the centrifuge force that generated under the high rotate speed, the solids and liquid will be separated into different layers. Screw press is through press material to make the solids dryer and get the clean liquid, the energy consumption is more lower. As usual, it can not treat the material with hard solids inside. And also need to mix with chemical to combine the solids into flocccule and then the machine can separate well. The treatment capacity is depended on the solids content of material. The more higher solids content ,the smaller treatment capacity. As usually, the max solids content should no more than 5%, otherwise the material should be treated by shale shaker to reduce solids content.

Low power consumption is the the biggest advantage compared with other equipment. For example the biggest model GNDL-404 with 52m3/hour capacity, which power is only 6 kw, the same capacity decanter centrifuge is 37-45kw. This feature makes it very popular in different industry, especially in the food industry, waste water treatment etc. And also for some special industry, we can use different material to satisfied the industry standard. For example ,we choose stainless SS316 for food industry.

GN has lot of experience in solids-liquid separation,not only the equipment, but also some customized system for special project, we provide the technical support by free. If your project have demand in our equipment, welcome to contact us.