Author: gnadmin

 

GN 3 phase decanter centrifuge is used to separate two liquid phases from one solid phase at the same time. As is known, decant centrifuge principle of separation is by G force. Because of the different densities of the (immiscible) liquids and the solid , so all three phases can be discharged simultaneously using the GN 3 Phase decanter centrifuge. GN Solids Control design and manufacture three phase decanter in different bowl size include: 350mm, 450mm and 520mm.

However, to do the 3 phase separation, the solid phase must be the specifically heaviest phase and the two liquid phases should have different densities.

The structure and principle of the three phase decanter centrifuge are similar to the two phase decanter centrifuge. The difference is the way of the liquid discharged. There are two liquid phases in separation in a 3 phase decanter centrifuge. A higher density liquid phase is discharged under pressure, and the lower density liquid is discharged without pressure. Following is the principle drawing of the 3 phase decanter centrifuge.

 

 

GN 3-Phase Decanter Centrifuge Parameter

Model GNSX-350, GNSX-450 & GNSX-520

• Applications For Three Phase Decanter Centrifuge
• Separation of oil sludge containing oil from refineries, oil ponds, etc.
• Extracting animal/vegetable fats and oils
• Starch manufacture for separating wheat starch and gluten.
• Oil Water and Solids separation.
• Coal tar treatment
• Biofuel production
• Lubricating oil additives
• Meat/poultry/fish (edible & inedible fats; yellow, white and brown grease)
• Edible oils (olive, palm, granola)

 

 

GN Solids control presents its Positive Displacement Pumps with the GNG Screw Pump series in its different presentations, depending on the work flow, we have them from 10 to 90 m3 / h and 4kW to 22kW. These positive displacement pumps are hydrostatic equipment. They pump a defined volume regardless of engine revolutions, but virtually independent of pressure. A positive displacement pump is one that displaces (delivers) the same amount of fluid for each rotation cycle of the pumping element.

 

These pumps are ideal for feeding centrifugal decanters without agitating the drilling mud. The main parts are the screw shaft (rotor) and the screw shaft bushing (stator). Due to the special geometric shape of the two parts, they form the pressurizing capacity separately. The fluids flow along with the shaft, the internal flow speed is slow, the capacity remains, the pressure is constant, so it will not generate vortices or agitation. The pump shaft is made of stainless steel, the GNG series pump is available for options with a full stainless steel body.

The GNG centrifugal feed pump can be driven by the coupler or adjust the speed using a variable speed motor, triangle V-belt, gearbox, etc. G series positive displacement pump with fewer accessories, compact structure, small volume, easy maintenance, rotor and Stator are wear parts of this pump, it is convenient to replace. The stator is made of elastomeric material, so it has particular advantages over other pumps for transferring fluids with high viscosity and included hard suspended particles.

Positive displacement pumps have multiple applications within the oil and gas industry, for the shipbuilding industry, beer industry, urban and wastewater treatment, paper industry, chemical industry, pharmaceutical industry, food industry, etc.

 

GN screw press sludge dewatering machine is a kind of economic and environmentally friendly sludge dewatering equipment. It is a new type of sludge extrusion dewatering equipment by using the principle of screw extrusion, through the strong squeezing force generated by the change of screw diameter and screw pitch, and the tiny gap between the floating ring and the fixed ring, to realize solid-liquid separation. GN dewatering screw press is composed of the fully automatic control cabinet, flocculation modulation box, sludge thickening, and dewatering device, and liquid collecting tank. GN dewatering screw press is with automatic control technology, which can realize the flocculation fully automatic operation, and continuously complete the sludge thickening and squeezing, finally return or discharge the collected filtrate liquid.

 

ADVANTAGES OF SCREW PRESS DEWATERING MACHINE

Suitable for wide range of sludge dewatering and can be used for oily sludge treatment.

Operating continuously and automatically, not easy to block.

Low investment and operation cost, no secondary pollution.

Energy-saving and environmentally friendly, compact design with a small footprint.

Sludge can be dewatered under aerobic conditions to avoid phosphorus release from anaerobic sludge dewatering.

FEATURES OF SCREW PRESS DEWATERING MACHINE

The main body of the screw press sludge dewatering machine is a filtration device composed of a fixed ring and moving ring, through which the screw axis runs. The front section is for concentration and the back section is for dewatering.

The filtering gap formed between the fixed ring and the moving ring of the dewatering screw press and the pitch of the screw axis gradually decreased from the concentration section to the dewatering section.

The rotation of the screw press shaft not only pushes the sludge from the concentration section to the dewatering section but also continuously drives the moving ring to clean the filtering gap to prevent clogging.

After gravity concentration in the concentration section, sludge is transported to the dewatering section. In the process of advance, with the gradual decrease of filtering gap and screw pitch, and the blocking effect of backpressure plate, a great internal pressure is generated; leading the volume is constantly reduced, so as to achieve the purpose of full dewatering.

Dewatering screw press is generally applicable to sludge concentration of 2000mg / L-50000mg / L

GN 3 phase disc stack separator is a high-speed, stable, sealed, efficient, and automatic slag discharge 3 phase separation equipment. It is widely used for liquid, liquid, solid 3-phase separation or liquid-liquid separation. The 2-phase solid-liquid separation disc separator has only one liquid discharge port and one slag discharge port, while the 3-phase disc separator has two liquid discharge ports and one slag discharge port, which can separate two liquids with different specific gravity at the same time. It can also discharge solid phase materials. Compared with the 3-phase decanter centrifuge, the 3-phase disc separator has a larger rotation speed and G force.

The 3-phase decanter centrifuge usually has a separation factor of about 3000G, while the 3-phase disc stack separator G force is up to 12000G. Therefore, the 3-phase disc separator can more thoroughly separate liquids with different specific gravity and the liquid phase discharged is more clarified. However, compared to 3 phase decanter centrifuges, 3 phase disc separator is more used to separate materials containing fine particles, with fewer solids content. So before entering the 3-phase disc separator, the material can be separated by the decanter centrifuge for pre-stage separation to reduce the solids content and remove big particles.

Working principle

The separated material enters into the heart of the machine, that is, the inside of the bowl. Under the action of strong centrifugal force, the material passes through a set of disc bundle separation intervals. With the neutral holes of the disc as the interface, the liquid with larger specific gravity moves along the disc wall towards the outside the neutral hole, where heavy slag accumulates in the sediment area, and the heavy phase liquid flows upward to the centripetal pump; the lighter liquid with a smaller specific gravity moves along the disc wall into the neutral hole and converges to the lower centrifugal pump. The light and heavy liquid phases are discharged by the lower centrifugal pump and the upper centripetal pump respectively; the heavy slag is regularly discharged; continuous production is implemented.

 

GN Solids Control has different sizes of sludge vacuum pumps for transferring all types of sludge. sludge vacuum pump specially designed to meet the requirements of plants in different industries Widely used in mining, chemical, construction, offshore drilling platforms.

 

Structure and Working Principle

Complete machine adopts vertical structure, small footprint, Vacuum for suction and positive pressure for discharge. It mainly consists of tank & pedestal combination, vacuum tube combination, air discharge manifold, sludge suction manifold, sludge discharge manifold, pneumatic control cabinet.

Sludge vacuum pump is a type of high load and strong suction capacity vacuum transferring pump, it is also called solids transferring pump or cuttings transfer pump. The unique structure design enables it work in the very tough circumstance with less maintenance. It is ideal equipment for transferring sludge with high solid content up to 80% and high specific gravity material. Vacuum pump has below featured: high efficiency Venturi device can produce a vacuum up to 10 meters water column for material suction under high air flow circumstance. It is designed with compact structure, almost no wearing parts, for high density material transferring like cuttings and oily sludge etc.

Features:

1、100% aerodynamic;

2. No power requirements, safe operation in hazardous areas, safe explosion-proof;
3. There are no rotating parts inside the cavity;
4. Vacuum can be maintained
5. Can produce 25” HG vacuum of mercury (up to 10m water column vacuum);
6. Single person operation;

7, easy to move;

8. Suction material, almost no wear parts.
9. This equipment is a pressure equipment, and each user may need to apply for approval according to the situation in each country before it can be used.

Conveying material category:

1. Drill cuttings from waste mud and vibrating screen, close to dry materials
2. Mud, tail slurry and oily sludge
3. Mud pit cleaning
4. Recycling of hazardous waste

5, sludge, bottom of the tank

6. Bilge cleaning of transport ships
7. Material handling of bulk tanks and silos
8. Sand, fine sand, and fracturing sand
9. Diatomite
10. Animal droppings
11. Furnace Ashes, flour
12. Almost known materials

 

 

Shale Shakers are widely used for solids control, they are equipment that allows to eliminate drilling cuttings from the drilling fluid and this whole process is done while circulating and drilling. In recent years GN technology has been improving, many different designs have come onto the market and research on the best design is constantly progressing as solids control is vital to keeping the costs associated with all kind of fluids, Oil and GAs, Mining, Construction and more.

GN Linear Dewatering Vibrating Screen adopts dual-motor self-synchronization drive technology with a built-in eccentric block. The vibration amplitude can be adjusted by the eccentric block.

 

GN Linear Dewatering Vibrating Screen is mainly composed of a screen deck, vibrating motor, supporting system, and electric control system. Through the synchronous and reverse operation of the vibrating motors, the centrifugal force generated by the two sets of eccentric masses is superimposed along the vibration direction, and the opposite centrifugal force is offset, thereby forming a single exciting vibration along the vibration direction, which makes the screen deck move back and forth linearly. GN High-frequency Linear Dewatering Vibrating Screen changes the water tension on the surface of the material through the exciting force. The liquid/water passes through the screen, while the fine solid particles are blocked by the screen to form a filter layer and move forward under the effect of the vibration force.

According to the material requirements, the Linear Dewatering Vibrating Screen can use a polyurethane screen panel. The polyurethane screen panel is lined with steel bars, which is very strong and wear-resistant, has a long service life, and does not pollute treated materials. The polyurethane screen panel adopts an inverted triangle three-dimensional anti-blocking design, which can effectively prevent blockage.

COMMON APPLICABLE MATERIAL OF GN LINEAR DEWATERING VIBRATING SCREEN

Mining Tailings Dewatering & Dry Discharge: Iron tailings, gold tailings, copper tailings, vanadium tailings, lead-zinc tailings, graphite tailings, etc.

Water-washed Sand Dewatering: Dewatering of quartz sand, zircon sand, glass sand, construction sand, foundry sand and building material sand.

Potash Feldspar Dewatering: less investment than filter press, lower energy consumption, convenient operation, better effect than screw classifier, it is a wise choice for potash feldspar dewatering.

Environmental Mud Dewatering: dewatering of municipal sewage, industrial wastewater, river dredging sludge, wastewater treatment, engineering mud treatment, construction mud, soil remediation, etc.

Fine Sand Recovery Application: Recycling and reuse of fine materials such as kaolin, mud, sand and gravel aggregate, artificial sand, coarse slime, concrete mixing plant, etc.

 

 

GN has been leading the development of centrifugal decanters from 9 inches to 30 inches with high quality materials and durability, with technology and precision in the assembly, receiving good comments from our end customers every day. The centrifugal decanter that GN has been activating the increasingly efficient process industry and maximizing resources to the full.

 

One of the processes used by the centrifugal decanter for the development of separation of solids and liquids is the fish industry.

For the fishmeal process, it begins its flow with cooking for the coagulation of the protein, with this process the bound water and oil are released, the separation by pressing of the coagulated product obtaining), a liquid stage (Press Liquor ) containing water and the rest of the solids (oil, dissolved or suspended protein, other nutrients such as vitamins and minerals) and a solid stage called (Press Cake).

 

The main part of the sludge in the Press Liquor is removed by centrifugation in a Decanter and the oil is by default extracted by centrifugation, due to the high G forces that our GN Decanters have and their materials used make an efficient separation. The Cola Water is concentrated in a multi-effect evaporator and the Concentrate is mixed vigorously with the Press Cake, which is then usually dehydrated in a sedative. The dried material is ground and stored in bags or in bulk. The extracted oil is stored in custom-designed tanks for later use or treatment that may be done in another process.

 

The functionality that GN offers in its centrifugal decanters in its wide range of models allows preventive maintenance to be carried out in longer periods and with less economic impact, making the end customer maximize their production costs; seeing as the best option the GN Solids control equipment is a safe and guaranteed investment in the short and long term.

 

GN Solids Control manufactures all 4-stage solids control equipment for treating drilling mud. This includes vibrating screen or Shale Shakers, desander, Desilter and decanter centrifuge. And also GN manufactures the drilling waste management equipment such as vertical trim dryer, high G drying agitator and waste treatment centrifuge. The decanter centrifuge for drilling mud treatment includes high-gravity and low-gravity solids separation, dewatering and wastewater treatment.

 

Different Kinds of Drilling Mud:

WBM, known as water-based mud, is Most basic water-based mud systems start with water, then clays and other chemicals are incorporated into the water to create a homogeneous mixture that resembles something in between chocolate milk and malt.

OBM which is known as petroleum-based mud, petroleum-based mud is a mud where the base fluid is a petroleum product such as Diesel fuel.

SBM, which is known as synthetic base fluids, is a mud where the base fluid is a synthetic oil. SBM is popular for offshore platforms.

Sludge from different types of drilling:

• Oil and gas drilling mud
• CBM drilling mud
• Horizontal directional drilling / trenchless drilling
• Tunnel Drilling Machine (TBM) for drilling grout
• Construction boring mud piles
• Water well drilling mud
• Mining industry, diamond core drilling mud
• Geothermal well drilling mud.

GN Solids control demonstrates to its clients that it can integrate their teams to provide comprehensive solutions that benefit the client in its different variables such as recovery, optimization of resources, process efficiency. The drilling mud treatment plant is a turnkey system that has been successfully implemented in our clients with outstanding performances as expected by the operator.

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  GN Solids Control is an active centrifuge manufacturer and engineering company that specializes in liquid-solid centrifuge separation technology, solids dewatering, barite recovery, and the Diamond and Core Drilling Industry. GN Solids Control utilizes specific system design and technology for a full selection of drilling industrial applications that require liquid-solid centrifuge separation technology.

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  The client from Bolivia has a big expectation about to receive the 14 inches  decanter centrifuge unit, GN Solids Control decanter centrifuges has delivered a  complete set for solids control including screw pump for their Oil and Gas operations. GN Solids control have the capability to develop more solids control equipment like shale shakers, shaker screens, mud cleaners, conveying equipment, and more.

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    • Duplex stainless steel SS2205 for screw conveyor material and rotating bowl are used to manufacturing, and shaft for big and small end cap. Duplex stainless steel is stronger and more resistant to abrasion and corrosion. This manufacturing process also avoid intergranular corrosion and incomplete release of stress
    • Screw blades are manufactured as a whole piece with CNC forming lathe, leading to high accuracy of the blades and higher solids discharge efficiency
    • GN can customize screw with changing pitch for high transfer efficiency and dryer solids
    • Optimized cone and pitch with BD plate to separate dewatering section and settling section, with deeper pond depth, longer dewatering section, dryer solids and clearer water. This also increase throughput speed.
    • BD plate also helps solids discharge
    • Less energy consumption is achieved with bigger pond depth, making decanter centrifuge use less energy. This also reduces turbidity flow of liquid to make separated water clearer, less wear on end blades which makes screw last longer
    • Dual cone angle is available for specific high solid concentration materials. The rotating bowl have two cone angles, which reduced discharge resistance and increase treatment capability while maintaining clarify of water and dryness of solids
    • Discharge ports are specially made tungsten carbide with excellent anti-abrasion capability and less fragility
    • Easy opening mechanism is used so that one man can open the collection box cover for easy access of equipment
    • Hydraulic removing mechanism is built into main shaft, which reduced pulling force by 90% when removing main bearings, this helps to ensure the safety of the bearing and high precision parts
    • All the rotating parts are made with high accuracy CNC machine. After that 3 step dynamic balancing is done. One is the balancing of rotating assembly at 1800RPM, balancing at real high speed and the balancing of whole machine to ensure stable operation of the decanter centrifuge at high speed

GN Solids America LLC specializes in drilling mud solids control equipment, drilling waste management equipment and a complete mud recycling system.GN Solids America LLC is a GN Solids Control USA Branch company.GN Solids Control established in 2007 deals with a total of 73 different countries.

GN Solids Control” is a global famous Solids Control Brand. GN Solids America LLC is the first USA based solids control company from China.GN Solids America maintains a 30,000 SF warehouse in Houston Texas. GN Solids America stock lots of solids control equipment and shaker screen. With Houston Branch established in 2013. This location has a GN sales team and warehouse service can provide to our customers at North/South American ” High Quality” “Fast Delivery” “Competitive Price”. GN America is also the marketing and distribution center for Latin America Market. The Houston location makes it easier for South America customers to order GN drilling solids control equipment.

GN Solids America Advantages:

The first USA based Solids Control Company from China

First API certified solids control equipment manufacturer in China

GN Products have been exported to over 60 countries and regions

GN All Facilities’ total area are over 65,000㎡ (70,0000SF) with a location close to Beijing.

GN owns a specialized facility for making shaker screens in the Asian largest wire mesh center city.

GN Owns over 10 patents for solids control and drilling waste management equipment.

GN management system for production complies with the HSE system ISO 14001 and ISO 28001 to ensure a safe product.

GN can provide OEM service with customized designs to protect customer brands.

GN Solids America Main Products Application

• OIL & GAS Drilling—-Mud Solids Control & Waste Management
• HDD & CBM Drilling —-Mud Recycling System
• Mining & Industrial—-Slurry Separation Plant