Recently, GN Separation completed the manufacturing and testing of two GNLWS554 Three-Phase Decanter Centrifuges. These centrifuges have been sent to North Africa to recover oil from olive oil sludge, a byproduct of production.

How GN 3-phase Decanter Centrifuge Operate

GN 3 phase decanter centrifuge is mainly designed for Solid-liquid-liquid three-phase separation of materials.With our over 10 years of experience in the separation industry, it is the most advanced type machine for 3 phase separation. It is designed for 24 hours continuous and smooth operation throughout the day. It is mainly composed of driving system, decanter bowl, screw conveyor inside the bowl, cover box, skid and VFD control panel.

They are advanced machines used to separate mixtures into solids, light liquid (often oil), and heavy liquid (like water). The process starts by introducing the mixture into a rapidly rotating centrifuge bowl. The centrifugal force separates the components, pushing the heavier ones to the bowl’s wall and the lighter liquid to the center. A scroll propeller moves the settled solids to the discharge end, preventing re-mixing. Meanwhile, the light and heavy liquids are discharged separately from different outlets.

Application in Olive Oil Production and Sludge Treatment

Olive oil production creates large amounts of waste sludge with reusable oil. Traditional disposal methods are harmful to the environment and waste resources. The GNLWS554 centrifuges provide a sustainable solution by effectively separating the oil from the sludge, enabling its recovery for reuse in production or other applications.

Key Features of GNLWS554 Centrifuge

GN Separation’s GNLWS554 3-phase decanter centrifuges are designed robustly and are well-suited for challenging applications such as olive oil sludge treatment. Key features include duplex stainless steel for high corrosion resistance in handling oil-laden sludge, a centrifugal casting process for reducing vibrations and wear, and a centripetal pump design for fine-tuning the separation process and achieving consistent separation efficiency. These attributes make the centrifuges reliable and effective in environments where downtime is costly.

In summary, GN Separation’s 3-phase decanter centrifuges utilize advanced materials and innovative technologies to efficiently recover valuable oil from waste sludge. For further details, please feel free tocontact GN.

Introduction

In the dynamic world of oil and gas exploration and production, the centrifuge stands out as a critical tool for efficient separation processes. This versatile machine is employed to separate various components of drilling fluids, cuttings, and produced fluids, ensuring the smooth operation of oilfield activities.

Oil and Gas Application

The primary application of centrifuges in the oil and gas sector is the removal of solids from drilling mud. Drilling mud, or drilling fluid, is essential for lubricating the drill bit, controlling pressure, and carrying cuttings to the surface. Centrifuges help in maintaining the mud’s properties by efficiently removing the unwanted solids, thus extending the mud’s life and reducing the need for frequent replacements.

Water Treatment

Moreover, centrifuges play a vital role in the process of produced water treatment. Produced water, which accompanies oil and gas during extraction, needs to be treated before it can be disposed of or reused. The centrifuge’s ability to separate oil, water, and solids makes it an indispensable part of the produced water treatment process, helping to meet environmental regulations and reduce operational costs.

In addition to these applications, centrifuges are also used in the separation of hydrocarbons from water and the dewatering of hydrocarbon streams. These processes are essential for the quality control and preparation of products for transport and sale.

About GN Decanter Centrifuge

The full name of the decanter centrifuge is the horizontal screw decanter centrifuge, which is a widely used equipment in the field of industrial solid-liquid separation. According to the characteristics of different materials in different industries, GN decanter centrifuge is divided into dewatering, separation, and clarifying decanter centrifuge. With centripetal pump technology, GN decanter centrifuge can also realize the 3-phase separation of liquid, liquid, and solids. GN decanter centrifuges are widely used in the industry, and the products are exported to more than 60 countries and regions in the world, and have won high praise from customers.

GN waste oil recovery decanter centrifuges are tailored to fulfill the separation needs of the waste oil processing sector. Waste oil typically contains oil, water, and solids, and GN Separation equipment provides efficient solutions for separating these three phases while maximizing oil recovery.

Waste Oil Recovery Treatment

The waste oil recovery and treatment process involves handling various types of waste oil, including:

1. Solids, water, and oil found at the bottom of oil storage tanks.
2. Oily residues and slop oils generated from oil refineries.
3. Oil sludge lagoons containing a mixture of oil, water, and solids.
4. Oil-water mixtures from ship ballasts, which are the spaces in a ship’s hull that are partially or completely filled with water to improve stability.
5. Sludge treatment from API (American Petroleum Institute) oil-water separators, which are used to separate oil and water in industrial settings.
6. Discarded lubricant oils and emulsions from various industries.
7. Industrial oil/water and emulsion waste streams, which may contain a mix of hydrocarbons, water, and other contaminants.

Advantages of GN Waste Oil Recovery Centrifuge

1. More sizes available: The centrifuge is available in various sizes with a large length/diameter ratio of 4.2:1 or greater, allowing for greater flexibility in handling different volumes and types of waste oil.
2. High G force: With a G force of up to over 3000 G, the centrifuge can effectively separate oil, water, and solids, ensuring high separation efficiency and oil recovery.
3. Two-phase or three-phase separation: The centrifuge can be configured as a two-phase or three-phase separation decanter, depending on the specific needs of the waste oil recovery process.
4. Explosion-proof design: The nitrogen purged centrifuge is designed for explosion-proof operation, ensuring safety in hazardous environments.
5. Corrosion-resistant materials: The duplex stainless steel bowl is resistant to corrosion, extending the lifespan of the centrifuge and reducing maintenance costs.
6. Automated operation: The centrifuge is equipped with VFD control, HMI, and PLC for automated operation, reducing the need for manual intervention and improving process efficiency.
7. Adjustable parameters: The bowl speed, differential speed, and pump capacity can be adjusted to optimize the separation process for different types of waste oil.
8. Wear protection: Various scroll and bowl wear protection systems made of tungsten carbide materials ensure the durability of the centrifuge and reduce the need for frequent repairs.
9. Customized design: The centrifuge can be customized according to clients’ requirements, allowing for greater flexibility in meeting specific process needs.
10. Global support: With worldwide partners and branches, GN offers fast support for waste oil recovery processes, ensuring that clients can rely on reliable and efficient service.

Introduction

GN Separation has recently finished hydraulic drive decanter centrifuge, which will be crucial for a major starch production project located overseas.

The Importance of Hydraulic Centrifuges in Starch Production

Hydraulic centrifuges are indispensable in the starch production process, as they facilitate the efficient separation of starch granules from the slurry resulting from wet milling. This separation step is crucial for ensuring the purity and high quality of the final starch product, which is vital for diverse applications across the food, textile, pharmaceutical, and bioenergy industries. By utilizing the centrifugal forces generated by the machine, hydraulic centrifuges effectively eliminate impurities, fibers, and other unwanted substances, yielding a refined starch product that is ready for subsequent processing or immediate use.

GN Centrifuge Solution Tailored for Starch Production

GN’s hydraulic centrifuge, specifically designed for starch production, meets the stringent demands of the food industry. Here are the key features of this equipment:

1. Food-Grade Safety with Polished Surfaces: Recognizing the significance of hygiene and product purity, GN’s centrifuge undergoes a polishing process on both the inner surface of the centrifuge bowl and the pushing screw propeller. This finish prevents material residue, ensuring that each batch of starch produced meets the highest food-grade quality standards.
2. Internationally Renowned Hydraulic System: The precision machinery is powered by a reliable and precise hydraulic system from Swiss brand Viscotherm. This system includes a hydraulic differential for smooth operation and an efficient air-cooling system to maintain optimal temperatures during extended use.
3. Advanced Monitoring and Safety Features: GN’s hydraulic drive centrifuge is equipped with a range of intelligent sensors, including automatic lubrication systems, temperature sensors, and vibration sensors. These features work together to detect and address any potential issues, ensuring safe and continuous operation of the equipment.
4. Hygiene-Compliant Control Cabinet: Designed with the food industry’s hygiene requirements in mind, the control cabinet is made of corrosion-resistant stainless steel and is easy to clean. It is equipped with VFD (Variable Frequency Drive) and PLC (Programmable Logic Controller) overload protection, enhancing operational safety and extending the equipment’s lifespan.

Introduction

Recently, GN solids control system is ready to serve China Drilling Company in coalfield geology operations.This system is designed to optimize the management of drilling fluids, thereby enhancing the overall drilling process.

Structure of the System

The solid control system includes four key components:

Mud Tanks. These tanks play a crucial role in storing and managing drilling fluids. They help separate and treat solids from the drilling mud, ensuring the fluid remains in its best condition for efficient drilling.

The solid control system incorporates two GNZS594 Shale Shakers, which serve as its foundation. These shakers are capable of processing up to 140 cubic meters of drilling mud per hour, making them suitable for handling large volumes. Each shaker is equipped with a single-layer setup featuring four shale shaker screens, totaling a screening area of 2.73 square meters. The adjustable G-force can reach up to 7.5G, and the screen box can be tilted between -1 and +5 degrees, allowing for customization based on drilling needs. Additionally, the GNZS594 shale shakers are available with various explosion-proof standards, such as ExdIIBT4/IECEX/ATEX, ensuring safety in hazardous environments.

The GNZS594J-2S12N Mud Cleaner is a compact and efficient unit that integrates a desander hydrocyclone, a desilter hydrocyclone, and a bottom flow shale shaker. This combination makes it an ideal solution for second and third-stage solid control in drilling mud processes. Its space-saving design does not compromise on performance, ensuring that the drilling mud is thoroughly cleaned of unwanted solids. The GNZS594J-2S12N Mud Cleaner is therefore a high-performance option for maintaining the quality of drilling mud.

The GNLW452 Drilling Fluid Decanter Centrifuge is engineered to efficiently separate solid particles from light mud at a reduced cost. Powered by a 75hp main motor and a 30hp auxiliary motor, this centrifuge boasts a processing capacity of 40 cubic meters per hour and a high separation factor of 815G. Its compact design, featuring both motors positioned at one end, conserves space and enhances operational efficiency. Beyond drilling applications, the GNLW452 decanter centrifuge is versatile and can be utilized in various industries, including industrial waste water treatment, marine oil spill recovery, oil sludge separation, municipal sewage purification, and mining wastewater treatment.

Introduction

In the realm of oilfield drilling, solids control equipment is of utmost significance as it enhances drilling efficiency, cuts costs, and benefits the environment. Today, we present a solids control decanter centrifuge unit, equipped with a centrifuge, lifting frame, screw pump, and other auxiliary devices, that has been supplied to a European drilling company.

Compact Structure of Centrifuge Unit

GNLW Series Decanter Centrifuge

The GNLW series decanter centrifuge stands as an effective solid-liquid separation tool. It excels in performing feeding, centrifugal sedimentation, and unloading processes at top speeds, making it indispensable for applications such as barite recovery, fine solid removal, drilling fluid solid content reduction, drilling fluid density and viscosity control, drilling fluid performance assurance, and accelerated drilling.

Working Principle

The operational principle of the GNLW series decanter centrifuge revolves around centrifugal sedimentation for separating drilling suspensions. The suspension is introduced into the rotating drum through the feed pipe, specifically via the liquid outlet holes in the spiral pusher. Here, under the intense centrifugal force, solid particles are pressed against the drum’s inner wall. These particles are then propelled towards the solids discharge port located at the drum’s smaller end by the spiral pusher’s blades. Simultaneously, the liquid phase flows out through the overflow holes situated at the drum’s larger end.

Model and Performance

The customer has opted for the GNLW453DVFD model decanter centrifuge, featuring a drum diameter of 450mm and a drum length of 1540mm. This model boasts a processing capacity of up to 264GPM (60m³/h) and is capable of separating particles sized between 2~5µm.

Screw Pump

The screw pump is preferred due to its minimal attachments, compact structure, small footprint, and ease of maintenance. The pump’s rotor and stator are the wearable components, designed for simple replacement. Notably, the stator is crafted from artificial rubber, granting it a unique edge in transporting high-viscosity and tough suspended waste slurry compared to alternative pumps.