Many people know that decanter centrifuge works on the principle of centrifugal force, which makes heavier solids to settle down on bowl wall and lighter liquid phase to “float” on top of the deposited solids. However, there is much more to take into consideration when decanter centrifuge is to be applied to different applications.

The first consideration is the capability required to in the production process. This can differ tremendously, from a few million liter per minute to thousands of cubic meters per hour. This is mainly due to economic consideration.

The other consideration is the length and diameter of rotating bow. The longer the rotating bowl, the longer slurry takes to travel the whole length, and therefore better settlement of the solids. This is particularly important when lighter solids phase is to be separated from the liquid. If the solids is much heavier, such as barite in drilling process, bowl length does not need to be that long. It is common for the length of rotating bowl to be 2, 3 or even 4 times the diameter of rotating bow.

Another consideration is the conical section of decanter centrifuge bowl, this concerns the texture of the solids to be separated. If solids is easily compactable, a bigger angle can be applied so as to increase throughput speed. However if the solids to be separated is quite lose, and difficult to get compacted, a gentle angle is usually required to have them compressed properly before being discharged from the rotation bowl.

One important factor is the centrifugal force. There is much to consider when this factor is to be considered. In a slurry there is always liquid in between solids particles. The finer the solids particle is, the more liquid content, therefore a much larger centrifugal force will be needed to move liquid content out from between solids particles.

Drilling activity is the process to establish communication channels for oil and gas to rush up to the ground. There must be a big number of mud tanks to support the normal progress of oil and gas drilling. Usually these mud tanks need to be cleaned, to prevent cross contamination, to prepare the tank for inspection, or simply for storage.

This task is usually done by people. Workers will wear heavy protective clothes, and use respirators, to go down inside the mud tank to clean the interior of mud tanks manually. As there is no lighting in the tank, illumination is required as well. As drilling technique is getting more and more complex, a lot of chemicals are added to drilling mud. These chemicals may be a serious thread to the workers. Confined space, potential toxic material (liquid or gas), dim environment, high temperature are big risks to people exposed to it. This inevitably give tension to people’s psychology and impact work efficiency adversely.

GN Solids Control has been involved in finding a good solution to get rid of this problem. After years of research and development work, GN Solids Control worked out the first generation of automatic tank cleaning system a few years ago. People at drilling rigs gave high appraisal to this system as it released them from difficult and dangerous cleaning environment. They also pointed out issues with the application of the system, which helped GN Solids Control to continue its R&D to make the system better.

Recently GN Solids Control released its third generation of automatic tank cleaning system. Compared to previous generations, the new system features the following:

1. High efficiency. The new system can clean a mud tank in 20 minutes. Compared to 6 to 9 hours needed to clean a mud tank by 4 people, the new system only requires at most 2 people. This increase mud tank cleaning efficiency substantially;
2. It minimizes worker’s exposure to difficult and confined space. All system operation needs to do is to mount the cleaning head inside mud tank and all other work will be done automatically. Some clients of this system have huge number of mud tanks to clean. They use top cover mechanism to lower cleaning head into mud tanks. This eliminates the exposure of people to risky environment.;
3. Water consumption is minimized. Water is valuable, especially in remote area where drilling rigs are located. Drilling rigs often have very limited water supply and do not want to use their water, which is usually trucked in from far away. Manual cleaning used open loop process – flushed down slurry will be dumped and the water is wasted. This new style automatic tank cleaning system contains solids-water separation equipment, which can settle solids down efficiently and reuse the water for cleaning. It significantly reduced water consumption, the quantity of slurry dumped to the environment, and the cost to truck the slurry to recycling station & to truck in fresh water;
4. New technology increases solid/water separation efficiency. This system can provide high flow rate to provide enough cleaning media and good pressure to wash mud tanks. If natural settling technique is used for such high flow rate, separation result can not be guaranteed. GN Solids control uses new technology which can separate solid from the slurry effective and efficiently and return clean water back to the cleaning head. Field experience shows that most of the solids are separated from slurry and cleaning quality is well secured;
5. GN Solids Control also uses other new technology to transfer slurry from mud tanks to the cleaning system, which can not be achieved by routine technique;
6. Automatic control. This system can also automatically control system operation to prevent dry suction or tank overflow.

There are other new technologies GN Solids Control uses to make the system do its job as is intended. Please contact us for more information and solutions for your tank cleaning needs.

There is always the need to transfer material other than liquid from one place to another. Examples are everywhere, from coal mine to construction side, from steel mills to agriculture.

There are many ways to transfer such material as well, from trucking, to tanking, etc., featuring high cost and low efficiency.

There is limitation for the above means of transferring non-liquid material too. For instance, transferring coal bring the potential of environment contamination. Other means of the movement of such materials is in bad need.

Vacuum pump manufactured by GN Solids Control solves this problem.

GN vacuum pump can transfer sludge, solids particles ( no more than 50mm or 75mm in size) to locations up to 1000m from pump location.

GN vacuum pumps uses venturi pipe to generate vacuum, and sucks sludges from tanks, pits, etc., and sends them to the closed buffer tanks. After a pre-set material level is established inside the buffer tank, the vacuum pipe will stop sucking and compressed air is applied into the tank to force the material inside the buffer tank to go outward. Because the high pressure of the compressed air, sludges can be transferred a long distance.

The advantages of GN vacuum pump are:

1. Safety. For instance mine camp waste can be safely transferred by vacuum pump. Other material such as life sludge can be transferred without affecting the health of the operator;
2. Environmentally friendly. Because the complete sucking & discharing & transferring process is done in a sealed pip route, no material is being leaked out from the route and there is no contamination to the environment;
3. High efficiency: GN vacuum pump has the capability of 10m³/h, 20m³/h and 40m³/h without the assistance of other machinery;
4. Flexibility: GN vacuum pumps can be used to transfer sludge, liquid, solids, tail mine, construction waste, from tanks, pits, river, etc., almost from any locations;
5. Versatile. Such pumps can also be used as a mobile equipment. It can be mounted on a truck, on a boat. For instance, it can be mounted on a vessel, suck up a dredge in a water surrended location, and transfer the dredge to the land.

GN vacuum pump has great potential in industry and daily life. If you have want to know more about this vacuum pump please visit www.gnsolidscontrol.com.

On drilling site there are many mud tanks for the normal drilling operation. Mud tanks are not high tech, but they are indispensable.

When drilling rigs need to switch from one kind of mud to another, mud tanks need to be thoroughly cleaned so that drilling muds would not crossly contaminate.

Traditional tank cleaning method is manual. Workers with heavy protection clothes enter mud tanks, exposing themselves to the hazardous enclosure and apply high pressure solution spray to clean mud tanks. This process is tedious and labor intensive, in hazardous environment. Sometimes the drilling rigs are in urgent of clean mud tank, and the only way to speed up is to clean the mud tanks with more workers, which adds economic burden to drilling operation.

In order to solve this problem, GN Solids Control performed extensive research, and in-depth development work. The result is GNTC-30 series automatic tank cleaning system.

The system composes of a buffer tank, which stores cleaning solutions. A powerful centrifugal pump pressurizes the solution and send liquid to tank cleaning machine (TCM). TCM is a well-engineered sprayer, which can scan the inside of mud tanks at pre-set scanning pattern. Usually tank cleaning is finished with one complete scanning cycle. If super clean inside is needed, say for very expensive drilling mud for critical drilling, secondary scanning is deployed.

Suck pump will collect fluid on the floor of mud tank and transfer the fluid to a inclined plate clarifier(IPC) by GN Solids Control, through a filter, which stops big items such as screws, big drilling cut from entering such pumps. It is quite normal that a lot of barite would deposit on mud tank floor. Because of its cost, barite needs to be recovered. So suck pump should be able to transfer heavy barite.

Once the sucked-in liquid is transferred to IPC, this highly efficient clarifier quickly separate solids including barite and solution. Solids will go to the bottom of IPC. Clarity of solution increase with decrease in liquid depth, with the cleanest water on the surface of liquid. This clean water will overflow to buffer tank, to be pumped again to clean mud tank to establish closed loop system.

The IPC by GN Solids Control has specially designed shape, which allows quick establishment of solids inside the tank. A membrane pump will transfer the deposited solids, including barite, to collect bin.

One major advantage of such automatic cleaning system is its efficiency. In general, a mud tank can be cleaned in 30 minutes. This is much more efficient compared to the manual cleaning process, which usually takes hours of hard labor work.

Another advantage of such system is safety, because exposure to hazardous enclosure is minimized. Operators only need to enter mud tanks to setup cleaning machine, and the rest of the cleaning process is done by the machine, with operator working on the outside.

GN Solids Control is continually to developing more efficient, more intelligent automatic mud tank cleaning system for different applications.

Three 600GPM non-excavation mud recovery systems sold to Asian countries. The three sets of 600GPM non-excavation mud recovery systems ordered by Asian customers have been prepared after strict production, assembly and test procedures. 600GPM non-excavation mud The recycling system is compact and easy to transport. The customer is very satisfied with the design concept and production efficiency of the crown energy control. In the field of non-excavation mud recovery system generation, GN Solids Control can design product solutions according to the actual situation and needs of customers, reduce costs and improve efficiency. Our customers are very satisfied with this.

The three sets of 600GPM non-excavation mud recovery systems ordered by Asian customers are the same. The main products are vibrating screen, desilter, 40-foot standard mud tank, mixing funnel and  Centrifugal  pump and other auxiliary equipment. 600GPM non-excavation All equipment and electrical components on the mud recovery system are equipped with international famous brands such as Siemens, Schneider, ABB, etc. The mud-removing cyclone is made of high-wear composite polyurethane material, all equipment paints are selected from marine anti-corrosion paint, and all accessories are internationally renowned. Brand names are interchangeable. The 600GPM non-excavation mud recovery system fully meets the needs of the local market for tropical climate environment construction. On-site Asian customers can maximize the use value of each equipment during use, and achieve the best mud purification and recovery effect.

Welcome to www.gnsolidsamerica.com and send your questions to USA@gnsolidscontrol.com

GN Solids Control is the world’s leading manufacturer of solids control equipment and mud recovery systems. Founded in 2007, it is located in Tangshan Township in central China. After 10 years of development, it has become a leading company in the solid control equipment industry. Its products range from mud vibrating screens, desanders, desilters, mud cleaners, muds. Gas separators, decanter centrifuges, cutting dryers, centrifugal pumps, agitators, vacuum degassers, shear pumps, submersible pumps, etc. GN can be your one-stop shop and solution provider for solids control operations . This year GN has significantly increased its manufacturing capabilities, and its second manufacturing facility can manufacture composite frame screens with up to 5,000 pieces per month. The new plant uses the latest technology to produce high quality screens at competitive prices

In 2018, the decline in the oil and gas industry was finally glued. From the end of 2014 to the end of 2017, the domestic drilling market has suffered tremendous downward pressure. Therefore, at GN, we build new businesses in different markets every day. We use our mud shakers and replacement screens to target local and international drilling companies to the domestic drilling market to help our customers daily drilling costs. We are looking to help them reduce their consumer goods by 50%, such as vibrating screens, and our Shale vibrating screen price and function ratio is also one of the best on the market. But we don’t just stop there. We also introduce Decant centrifuges, cutting dryers, oil sludge treatment systems, and other GN Made equipment on the market. Considering an idea, GN is becoming a multinational manufacturer with top quality and competitive prices. Make GN Solids a world-renowned brand.

This is the common goal that every GN employee is working on. Visit our website at www.gnsolidsamerica.com for more information, please send your questions to cris.zhang@gnsolidscontrol.com