Jul 12

Decanter centrifuge is widely used in industry to separation solids from liquid at fast speed. Without decanter centrifuge industrial process will be way slowed down.

There are many factors affecting the operation of decanter centrifuge, many people think it mysterious while others think decanter centrifuge a common equipment and there is nothing weird.

First is the centrifugal force, which is usually defined as times the centrifugal force than regular gravity. The parameter depends on the diameter of rotating bowl of decanter centrifuge, and the rotating speed. Centrifugal force is more sensitive to bow diameter than rotation speed as G force is proportional to the square of bow diameter.

With higher G force, settlement time for solids is reduced to seconds instead of a few hours with gravity settlement.

Another consideration is the separation speed. This is proportional to the gravity difference between solids and liquid. The smaller the difference, the slower the settlement. If gravity difference between solids and liquid is trivial, separation will take extended long time.

Particle size also affect separation speed. For bigger particles, it is easy for them to deposit because buoyancy can be neglected for bigger particles. However as particle sizes become smaller, buoyance becomes important, and in the extreme condition, buoyance can balance out gravity force and small particle will float in the liquid and never come to bow wall.

Differential speed between scroll and rotating bowl is another important consideration for separation. This differential speed must be optimized to minimize case thickness as it will affect discharge quality. Higher differential speed results in good throughput speed but less clear liquid. Solids settlement becomes even more complex when there is both big particles and small particles, with different gravity.

Above is a few factors contributing to the clarity of liquid. There are other factors impacting performance of decanter centrifuge. Designers need to prioritize these factors to make the equipment tailored to specific application.decanter-centrifuge

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written by Decanter Centrifuge

Jun 21

“GE, an industrial company, but also a digital company”. Some people may have watched this commercial on American’s main media, like CNN or NBC and we may wonder what does that mean? The answer is it represents the future trend-digital and automation.

As we all know, GE is the conglomerate in many industries, such as energy, electric appliances, aerospace and so on. So its action and strategy will represent the future of the industry. Recently GE just opened its new main office nearly San Jose and recruited a lot of engineers from Google, Apple, Microsoft with background of electrical engineer to develop its own system  called “Predix”, which is the world’s first and only cloud-based operating system for industry. GE plans to make “Preix” as the industry standard similar to the position of Microsoft Windows system in the PC industry. It will realize the digitalization and automation of the industry, including the oil and gas industry. One example for this trend is on June 14,2016, GE and Technip signed memorandum of understanding to explore digital solutions for new LNG projects. LNG will have great potential for growth as the world’s demand rises. So this prosperous area will be co-developed by the combination of strength of GE and Technip. GE will provide it reliable equipment solutions for the global LNG facilities, through sensors, advanced analytics and diagnostic expertise. Technip will provide unique expertise in EPC for LNG projects.

gn-solids-america-about

The future of the oil and gas industry will be more efficient and powerful, which will be realized by digital and automation and will optimize the equipment and operation to improve the productivity and cost-efficiencies.

As the crucial part of the mud cleaning system of the oil and gas industry, solid control system will also inevitably follow the trend of automation and digital, including its shale shaker, desander, desilter, mud cleaner, decanter centrifuge, mud agitator, cuttings dryer  and some other equipment and parts. GN solids control can manufacture the most advanced solid control equipment in the industry, such as the VFD controlled equipment which can realize the automation and digital. Welcome to log in to our website www.gnsolidsamerica.comto check more about the product info and send your inquiries to usa@gnsolidscontrol.com.

 

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written by Decanter Centrifuge \\ tags: , , , , , ,

Jun 17

Comparing with other solids control equipment like the shale shaker, desander, desilter and other equipment, the decanter centrifuge clearly need more attention and more care during operation in order to make sure a good performance, especially on the 24*7 running jobsites.
As the leading manufacturer of solids control and waste management manufacturer in China, GN has been producing hundreds of decanter centrifuges and GN centrifuges are working all over the world, GN has following tips to share with the decanter centrifuge owners or operators.

a good choice of centrifuge

GN decanter centrifuge

1. Before confirming the model, collect as much as information including the those points: the jobsite condition, like the temperature, the end users’ special request like the EX standard (ExdIIBT4? IEC EX? ATEX or Gost?), the allowable max electric current, and electric specification of the jobsite(380V, 50HZ? 460V, 60HZ? 415V, 50HZ or others?). And try to collect as much information of the material to be treated, the largest particle size, the solids contents before treatment, and the allowable largest particle size and solids content after treatment. A right choice of decanter centrifuge is the precondition of its good performance. Those are GN Centrifuge Models for your reference.
2. Before installing and commissioning of the decanter centrifuge, read the user’s manual carefully and get a general idea of the specific model of decanter centrifuge and the control panel. Normally, the VFD controlled decanter centrifuge is more complicated to operate, the operator need to have both mechanical and electric knowledge to handle it, at least for operate it.
3. Assign a specific professional engineer or operator for each decanter centrifuge. His work is to observe the condition of the decanter centrifuge and discover any problem at the first time and solve it. Because the centrifuge is high speed running machine, and when the mud condition changed a bit, it affect the performance and the centrifuge service life.
4. Lubricate the centrifuge on time, especially the bearings. Like GNLW363CG decanter centrifuge, the bearings are original SKF bearing. Good bearings ensure a longer service life on basic that you maintenance them carefully. Per manual’s instruction, some points of decanter centrifuge need to be lubricated every shaft and some need to be lubricated after running some hours.
5. A standard equipment is designed for common conditions, but not for all. In some cases, the end user need to make the jobsite condition to suit the equipment, like to make some isolation for keeping the equipment warm or cool, sometimes, the end users even put the decanter centrifuge in a air conditioned room or container to get an ideal performance.
May you have more questions or need more information, welcome to contact GN freely.

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written by GN Decanter Centrifuge \\ tags: , , , , , ,

Jun 02

Days ago, GN Solids Control cooperated with an outdoor team and held an activity in suburb Beijing for a one day journey. GN sales team attended this journey and the journey was fruitful and meaningful.

Marketing department is a very important department of GN company, this department is combined by more than twenty youngsters who have a same goal and dream. This department includes three teams, the domestic sales team, the oversea market sales team and the marketing team, their duty is not only to get orders for the company, but also to collect information of the industry, receive feedbacks and tips from clients and also takes some responsibility for the after sale service for the clients. Most of their time is spent on work.

See GN's activities after work

See GN’s activities after work

But work shouldn’t be the only content of their life, and work is also fun. GN Solids Control’s products are exported to more than 60 countries and regions in the world, and for every time zone, there are GN’s clients. GN has branch offices and companies in USA and Russia and GN agents are in many countries. So GN sales are working per different time zones and always on business trip out of the country or out of the city. It is not easy to get a reunion for everyone.

This time, when we had this journey, there are still 7 members are absent. GN team sent greetings and pictures to them to share the joy.

For this journey, there are several activities arranged, it is not only test and compete for everyone’s IQ and EQ, but also, a challenge for everyone’s courage and team work attitude. All  assignments required a good team work and cooperation. When we are alone, we can not finish any of them, even without thinking of it. But when we work together, we face the same problem and we focus on the solution, we accomplished them all.

It’s just like the daily work, when we get together and share our ideas and experiences, it would be easier for us to get the best solution and make the full use of our resources. Only in this way, could our team be stronger and tougher.

Well done, and we will do better.

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written by GN Decanter Centrifuge \\ tags: , , , , , ,

Apr 12

In the past CIPPE 2016, GN Solids Control brought its centrifuge family to the show, all the centrifuges from the 9 inch baby centrifuge to the 22 inch big brother centrifuge, standing in a row and visited by many visitors and end users.

Especially the GNLW363 Decanter centrifuge, both the old look one and the new design were shown in CIPPE 2016, and the new one was positioned on a skid. What’s the differences between each generations GNLW363’s?

1, first generation GNLW363, the original design for 14 inch decanter centrifuge, with the two motors on each side of the centrifuge. although the material used is better than others, the centrifuge is still an old looking one.

centrifuge

2, second generation GNLW363B, it is more international looking, as GN Solids Control has been selling its products to many countries and regions in the world, and GN’s products design became more and more international, GNLW363B decanter centrifuge’s motors are located on same side of the centrifuge, it allowed the operators to have more space for operation.

  1. third generation GNLW363C decanter centrifuge, for outlook, it is similar to GNLW363B, with two motors on one side. But there are more small but useful changes on GNLW363C, because the centrifuge was used for many applications since then, like the oily sludge separation, the dewatering unit and etc, with feedback from jobsites, GN re-designed it and better it a lot.

4, forth generation GNLW363D, the inside design is similar with GNLW363C, but the outlook is quite different, as the structure is more compact and total weight is less, easy for air shipment in case of urgent use.

For the same model of GNLW363D/C decanter centrifuges, GN has optional control panels like fixed speed control panel, VFD control panel of normal one, and the positive pressurized control panel with PLC smart touching screen.

 

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written by GN Decanter Centrifuge \\ tags: , , ,

Apr 12

Last week, GN Solids Control was back from CIPPE 2016, Beijing and won big success. This year’s CIPPE accepted many visitors from many countries in the world, not only the domestic oil and gas companies. A great many engineers from CNPC, SINOPEC, and COSL and other oil companies and Oil drilling companies attended and visited the Oil Show.
GN Solids Control had a booth of 400 square meters, which was located in E2 Hall, on opposite of SINOPEC’s booth. As the leading solids control manufacturer in China, GN brought all main equipments for the oil and gas solids control, including the shale shaker, mud cleaner, decanter centrifuge of middle speed, and also the main equipments for the drilling cuttings waste management system, including the high-G drying shaker, the high speed decanter centrifuge, the vertical cuttings dryer and screw conveyors.

IMG_5263
Among all above mentioned equipments, many are newly updated models, like the shale shaker, GN changed the feeding type and discharge chute. For the decanter centrifuge, with same function and material not changed, the structure is more compact than before. The vertical cuttings dryer was applied with new material for better performance for high viscosity treating media.
Also, as the core products of GN Solids Control, the whole GN Centrifuge family attended CIPPE, and made a perfect show. The centrifuges are ranging from 9 inch diameter bowl to 22 inch diameter bowl. They stand in a row and attracted many eyeballs not only of GN clients, but also GN’s peers. Some world well known centrifuge manufacturer sent engineers to GN’s booth to learn from each other and congratulated on GN’s success.
If you missed the CIPPE Oil Show but also need to see GN’s products, welcome to contact us for visiting on our headquarter which is only 40 minutes drive from Beijing Airport. Or you can see our products and staff at Moscow Oil Show in April, OTC oil show in Houston in May, Iran Oil Show in Tehran in May and Malaysia Oil Show in May.

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written by GN Decanter Centrifuge \\ tags: , , , ,

Mar 23

Recently, the crude oil price is slightly picking up, and along with that, the oil service projects are recovering slightly. There are many urgent inquiries coming to GN for the equipments and spare parts. Since a lot of projects start urgently, the requests for equipments are urgent too. Most of clients need short delivery time, they turn to GN for assistance and GN, luckily for both of the manufacturer and the clients, currently has some stock for their use.

This time, the middle east client requested several sets of centrifuge units, with a short delivery time within 10 days. What he requested are GNLW363CG-VFD Decanter Centrifuges, feeding pumps mono pump and the centrifuge telescopic skids. The clients are using those centrifuge units for waste management projects.

over-30-sets-decanter-centrifuge-for-africa

The urgent order includes following equipments:

  1. GNLW363CG-VFD high speed decanter centrifuge.

GNLW363C series decanter centrifuges are most popular size used in oil and gas industry, like the solids control centrifuge and the waste management centrifuge. the 14 inch diameter bowl and max rotating speed up to 3900 RPM helps it to achieve good performance for extra fine particles separating, from 2 microns to 5 microns. And GNLW363CG is high standard configuration of GNLW363 series, of the best material for this kind of centrifuges, like the bowl material, SS2205 stainless steel, and the SKF bearings, and etc. If you need more information, welcome to see our website, to the centrifuge page.

  1. VFD control panel with PLC smart touching screen. This is not simple VFD control panel, it is the positive pressurized control panel with self cooling system. Unless the flame proof control panels which are used to block out the outside atmosphere, the positive pressurized control panel adopts an air compressor to input the compress air and not let in the flammable air.
  2. mono pump for feeding the centrifuge. Mono pump is also called the positive position pump, the rotor and stator in the pump evenly and steadily feed the material into the centrifuge. it is the best solution as a centrifuge feeding pump.

Now the equipments are ready to deliver.

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written by GN Decanter Centrifuge \\ tags: , , , , , , ,

Mar 23

Comparing with the VFD Controlled decanter centrifuge, the fixed speed one still has its benefits, like the compact structure as a whole with the decanter centrifuge and its control panel, and the easier operation, no need to adopt an extra air compressor, and etc.

But still, the VFD controlled decanter centrifuge is the only choice accepted by the end users. Because the positive pressurized control panel is more suitable for the high temperature conditions, and the easily changeable rotating speed, then the G force accordingly helps the VFD controlled decanter centrifuge to be suitable for more applications like the middle speed and high speed.

GN Centrifuge

GN Centrifuge on Skid

As the leading manufacturer of solids control and waste management systems and equipment, especially for the decanter centrifuges, besides the fixed speed decanter centrifuge, GN also produce normal VFD control panel decanter centrifuges and also the positive pressurized VFD control panels for decanter centrifuge. And GN Solids Control is the only China manufacturer who has positive pressurized control panel for option.

In order to change a fixed speed decanter centrifuge, take the best seller model GNLW363CG decanter centrifugethe end user need to change the 11kw back motor for the decanter centrifuge into a VFD motor and also prepare a VFD control panel for changing the fixed speed control panel.

About the VFD control panel, GN has double VFD ( centrifuge main motor and back motor), three VFD ( centrifuge main motor, centrifuge back motor and pump) for option. Depending the Exproof options, there are flame proof VFD control panel which is similar as other Chinese suppliers, and also the positive pressurized control panel for option. If the choice is a positive pressurized control panel, the end user should prepare an extra air compressor at jobsite as the air source of the control panel.

 

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written by GN Decanter Centrifuge \\ tags: , , , ,

Jan 01

GN decanter centrifuges are the most cost-effective solids control equipments for the oil slurry or waste water separation. With these years’ fast development, now GN Solids Control is manufacturing 250 sets to 300 sets decanter centrifuges every year. Most of these decanter centrifuges are widely used in more than sixty countries.
GN decanter centrifuges are divided into the following types by rotating bowl diameter: 9 inch, 14 inch, 18inch and 22inch. With the establishment of GN Solids America LLC, now in GN Houston warehouse many decanter centrifuges as well as some other equipment such as shakers and cuttings dryers are also in stock. GN decanter centrifuges can be sent to any America or Canada region in a short period.

363 Decanter Centrifuge 2
With these years onsite experiences, GN engineers have been upgrading GN decanter centrifuge since they were invented. Now GN decanter centrifuges has been upgraded to the C generation which is more wear resistance than the former versionwhile also has a much longer using life.
In March, 2015, GN delivered over 30 sets decanter centrifuges (including VFD centrifuges and fix speed centrifuges) to one client in Africa. Now GN got the feedback from those 30 sets decanter centrifuge, the slurry separation is totally meeting our client’s demands.

150204-decanter-centrifuge-for-barite-recovery
GN always devoted to providing the best quality equipments. GN shakers, centrifuges and cuttings dryers are three main equipments that we manufactured. With the establishment of GN Solids America and GN Solids Russia, GN has expended its market to the global world in a short period. And in the next year, GN will open another office in Middle East.
Many large clients are using GN decanter centrifuges for the solids control. With more and more companies pay attention to the environmental protection, GN solids control equipments are getting to known by more and more clients due to the most cost effective character.

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written by Decanter Centrifuge \\ tags: , ,

Dec 07

Not long ago we shipped a complete range of customized mud mixing tank system to South America, as a small part of a new liquid mud plant.
The primary configuration of the mud mixing tank system is as down below:
1 4 sets regarding 40 feet container dimensions mud tanks with important handrails, stairs, walkways, interconnection pipelines, valves, flexible internet connections, flanges, man hole, clear gate, etc . 3 are mud mixing tanks, a single of them is mud running tank.
2 Each tank with 2 units involving GNJBQ15DD ( double blades) mud agitators, 2 products of 2 inch mud firearms, 1 fluids level ingerir
3 Each tank having 6×5 with 75HP centrifugal pump as transfer pump, 75HP shear pump intended for cutting the mixed chemical substances, 60HP mixing pump dealing with venture hopper. All of the pushes are designed to multi functions, such as:
The transfer pump can function as feeding pump connected with shale shaker and OBM processing tank; the mixing tank can work as exchange pump when stop mixing. The shear pump perform as transfer pump around july available or when the exchange pump is under routine maintenance. The transfer pump can certainly transfer the clean liquids from the liquid mud vegetable to mud mixing tank system, also it can transfer typically the mixed fluids into mud storage tanks.


4 One of many tank is as oil based mud processing tank, with the solids control equipments as: 2-panel shale shaker GNZS852-HB, two units of high speed decanter centrifuge GNLW363CG, mud agitators, mud guns, centrifuge giving pumps.
5 Operation family table for each mud mixing aquariums, the chemicals will be put on the particular operation table by forklift for convenient operation.
a few Customized painting color, custom made mud tank storage capacity, personalized treating capacity
If you need a new proposal for liquid mud plant or mud mixing tank system, pls experience of GN solids control with Beijing or GN solids America in Houston, TEXAS.

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written by Decanter Centrifuge \\ tags: , , , , ,