Author: gnadmin

The development of the chemical and pharmaceutical industries is of great importance to human welfare, where mechanical separation and conveying equipment have been widely used. The decanter centrifuge and stack separator discs can be used to extract specific chemicals, classify and dehydrate chemicals and pharmaceuticals, and separate liquid mixtures of different densities. GN various transportation equipment and vacuum pumps for solids are also used in the transportation of chemical materials. In the chemical and pharmaceutical industry, users have a high demand for safety and stability. GN is committed to providing high-quality products to meet the requirements for safety and efficiency of operation. For these industries, GN took the best step forward to ensure product safety and reliability in product design and development aspects.

Separation and extraction of API (active pharmaceutical ingredient), pharmaceutical intermediates, teas, honeysuckle, Chinese yews, vitamin B5, pig brain protein, intestinal capsid, etc. API extraction process: network preparation, cutting, processing, drying, grinding, extraction (water extraction or solvent extraction: organic solvents such as ethanol), solid-liquid separation, ultrafiltration, concentration by evaporation (solvent recovery organic), drying, grinding, screening, packaging, sending to the preparation workshop for solids or liquids. In the solid-liquid separation process, GN C series explosion-proof high-speed decanter centrifuge or high-speed disc stack separator can be used to separate and remove impurities after alcohol precipitation to that the active ingredients dissolve in an ethanol solution; followed by high-temperature distillation of ethanol and complete separation of pharmaceutical ingredients. GN GNZS series vibrating screen can be used in the separation process

GN Solids Control manufactures centrifuges for the production of wine and beer to produce high-quality wine and beer. The function of the GN centrifuge is to perform separation and clarification during the production of wine and beer.

Wine production centrifuge

Must clarification and lees processing is very important for wine making, the GN decanter centrifuge can be used to clarify solids from liquid phases. Instead of using a rotary vacuum filter to perform the clarification, centrifugal decanter separation allows the must to remain in contact with the lees for a shorter period. As a result, the centrifuge minimizes the negative effects of the lees on the quality of the must, since the lees usually have a high phenol content. Compared with the conventional diatomaceous earth process, decanter centrifuge separation produces less waste in wine production for disposal with easy operation and lower maintenance cost. Cost-effective NG centrifuges offer decisive economic benefits in general for wine producers. The solids discharged from the GN wine processing centrifuge can be used as fertilizer for the vineyard. PLC and HIM automatic control centrifuge reduces processing time, ensuring efficiency for wine production. Quality is a fundamental factor for wine producers because the GN decanter centrifuge uses high-quality stainless steel, resistant to corrosion and acids, made from centrifugal casting or forging. The GN decanter centrifuge can meet the most stringent hygiene requirements. Finally, the bottom line is that the effective separation and clarification of the GN centrifuge for wine ensures producers have high-quality products.

 

Centrifuge for brewing

GN beer processing centrifuge is the best choice to produce high performance with consistent beer quality. In brewing, GN centrifuges can be used for a variety of applications including dehydration of beer grains, recovery of wort from hot trub, clarification of beer prior to filtration, recovery of beer from leftover yeast, separation of green beer, defined adjustment of turbidity, reduction of brewery wastewater. The GN centrifuge specially designed for brewing is the ideal choice for those applications. GN Customized Beer Centrifuge can meet the specific requirements of the brewing industry to reduce the cost during brewing. In addition, it is considered that our experienced engineers always have the product that can reduce beer losses, minimize wastewater and avoid fluctuations in the brewing process.

 

GN Solids Control is a leading decanter centrifuge manufacturer. And our supplier from Switzerland is the leading brand for centrifuge hydraulic driving systems. GN and our Switzerland supplier have been jointly working together to develop the full hydraulic drive centrifuge for international clients to meet the highest standard.

The hydraulic bowl and scroll drive system drive both the conveyor and bowl of a decanter centrifuge from the hydraulic pump unit by two hydraulic oil circuits.

The advantage of the full hydraulic drive centrifuge is for use in high temperature ambient for heavy mud with flexible bowl and differential speed. The compact one skid design makes it easier to rig up.

 

Model- GNLW363D-FHD

Bowl Size:            360x1270mm

Bowl Speed:       0-3400RPM （2328G）

Differential Speed:          0-70RPM

Motor Power:    45 KW

Driving System: Switzerland Hydraulic Drive

Max Capacity:    200GPM(45m3/h)

Max Torque:      4163 N.M

Dimensions(mm):            3000x2400x1860mm

Weight (KG):      3400KG

Principle of the Hydraulic Drive System -FHD Principle

The fully hydraulic system consists of A the Hydraulic Pump Unit, B the Bowl drive hydraulic motor, and C the Scroll drive.

The hydraulic pump unit A feeds hydraulic oil to the scroll drive C and the bowl drive B by means of two separate and individually independent operating circuits

An electric motor A1 drives the combined pumps A2 and A3. Each operating circuit is equipped with its own hydraulic pump and its own controls. The pump unit contains all setting devices and safety valves, as well as pressure gauges.

With this system, the bowl’s rotational speed, as well as the scroll’s differential speed, may be manually adjusted independently from one another, continuously and infinitely variable during the centrifuge’s operation.

 

Features of GN Full Hydraulic Drive Decanter Centrifuge

Model   GNLW363D-FHD

Bowl Material:   Duplex  SS2304/SS2205 from centrifugal casting

Screw Material: Stainless Steel SS 304/ SS 316

Screw protection:            Tungsten Carbide Tiles

Solids Discharge:              Tungsten Carbide Inserts

Bearing Brand:  SKF

FHD Brand:         Switzerland Hydraulic Drive

Electrical Control:             PLC Smart Control

Coating Brand:  Cosco & Kansai Zinc Rich Epoxy Coating

 

GN Solids Control has manufactured various sludge recycling systems for the solids control industry, such as drilled piles, protection tunnels, coalbed methane drilling, dredging, water well drilling, etc. During the past few months, GN Solids Control only provided a few sets of bored pile mud systems for the Asian market. GN mud systems are widely used in Singapore, China, Saudi Arabia, and Myanmar.

GN provides standard mud systems for quick delivery including 200 GPM, 500 GPM, and 1000 GPM. Customized mud systems can also be manufactured based on customers’ special demands.

 

GN D series mud systems are designed and manufactured in quite a compact structure. The agitator and hydro cyclones are mounted on top of a catch tank. Centrifugal pump and control cabinets are located on the stand to save space. Since the catch tank is made of tapered steel, the sludge will run along the inside wall of the sludge tank. In this case, mud will not accumulate.

Dirty sludge is typically pumped by a submersible pump from a sludge pit to the bottom agitator. Most coarse solids can be separated when different API number shaker screens are used.

The GN centrifugal pump is used to feed those cyclones in the agitator with the fluids in the tank. Cyclones are chosen when different solid particles are separated; GN provides 4-inch and 10-inch cyclones to separate most particles.

GN also provides advanced mud systems for HDD mud control. Treatment capabilities are the same as standard mud systems. Some sets of jet mud mixers, and storage tanks in the HDD area are also needed.

GN Solids America LLC has provided many sludges cleaner kits (agitator, desilter) in the United States. More and more American customers are learning about GN. Welcome to connect with us if you want to find the most cost-effective solution for your sludge control.

 

GN screw press sludge dewatering machine is a kind of economical and environmentally friendly sludge dewatering equipment. It is a new type of sludge extrusion dewatering equipment using the principle of screw extrusion, through the strong compression force generated by the change of diameter and pitch of the screw, and the small gap between the floating ring and the fixed ring, to perform solids -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 has automatic control technology, which can realize fully automatic flocculation operation and continuously complete sludge thickening and squeezing, finally return or discharge collected filtrate.

ADVANTAGES OF SCREW PRESS DEHYDRATING MACHINE

• Suitable for a wide range of sludge dewatering and can be used for oily sludge treatment
• It works continuously and automatically, it is not easy to be blocked.
• Low investment and operation cost, without secondary pollution.
• Compact design that saves energy and is environmentally friendly and takes up little space.
• Sludge can be dewatered under aerobic conditions to avoid the release of phosphorous from anaerobic sludge dewatering.

 

FEATURES OF SCREW PRESS DEHYDRATING MACHINE

 

1. The main body of the screw press sludge dewatering machine is a filtration device composed of a fixed ring and a movable ring, in which the screw axis passes. The front section is for concentration and the rear section for dehydration.
2. The filtrate gap formed between the fixed ring and the moving ring of the dewatering screw press and the pitch of the screw shaft gradually decreased from the concentrating section to the dewatering section.
3. 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 filter space and prevent clogging.
4. After gravity concentration in the concentration section, the sludge is transported to the dewatering section. In the process of advancing, with the gradual decrease of the filtrate space and the pitch of the screw, and the locking effect of the backpressure plate, a large internal pressure is generated; leader, the volume is constantly reduced, in order to achieve the purpose of complete dehydration.
5. The dewatering screw press is generally applicable to 2000mg/L-50000mg/L sludge concentration

GN dewatering decanter centrifuge is T series decanter centrifuge with a beach angle of 8.5 Degrees. GN T series decanter centrifuge is usually used for dewatering and thickening purposes. It is widely used for maximum dewatering requirements of municipal and industrial wastewater sludge. The dewatering decanter centrifuge is designed for easy separation of material including large particle size, the high-density difference between solid and liquid, low viscosity, high concentration, high treatment capacity, and higher dryness than clarity. The materials like sludge or wastewater containing fine particles usually need to be added with flocculants to gather the fine particles condensed into large ones, and then dewatered with T series decanter centrifuge.

APPLICABLE MATERIAL FOR DEWATERING DECANTER :
Drilling mud, environmental protection sewage, oily sludge, cutting fluid, sand washing water, mineral washing water, soda white mud, salt mud dewatering, magnesium aluminum emulsion, steel-making wastewater, precision casting wastewater, construction mud, tunnel mud, mine wastewater, industrial wastewater, organic wastewater, aquaculture wastewater, chemical industrial wastewater, printing and dyeing wastewater, municipal sewage, river sludge, water plant sludge, lake sludge, kaolin grading, calcium carbonate, bentonite, Silica, titanium dioxide, calcium sulfate, barium sulfate, conductive film glass polishing solution, aluminum hydroxide, cryolite, silicate, oil sand separation, landing oil, oil sludge, coal tar, inorganic fertilizer, Chinese medicine extraction such as honeysuckle and licorice, clarification, concentration and dehydration of salt crystals, etc.

T SERIES DEWATERING DECANTER CENTRIFUGE FEATURES

The beach angle of the T Series dewatering centrifuge is 8.5 Degree, which makes the decanter centrifuge cone section longer, that is, the drying and dewatering area of the centrifuge is longer, which is conductive to the dewatering performance of the T Series decanter centrifuge, and much drier solid materials discharged.
The shaft caps on the two ends and the bowl are made of duplex stainless steel SUS2205 or SUS2304 by centrifugal casting, which is superior to the performance of SUS304 and SUS316. The main parts are made by centrifugal casting and die forging process to avoid intergranular corrosion and incomplete residual stress release caused by the traditional welding process.
The screw blade is pressed by the CNC spiral blade forming equipment. Compared with the traditional drawing screw blade, it has higher slag conveying efficiency than the traditional drawing screw blade.
According to the material properties, the screw blade can adopt a gradual change type, which can obviously improve the efficiency of the screw’s transport and press force to make the solids dryer.
Optimized beach angle and pitch, large beach angle, and medium pitch with BD baffle plate make the dewatering zone separated from the sedimentation zone. The depth of the liquid pool is deeper and the dewatering zone is longer. The separated clear liquid is more clear and drier, and the processing capacity is larger. The deep liquid pool loses less kinetic energy when the clear liquid is discharged. The machine consumes less energy and is more energy-efficient At the same time, it has a material acceleration structure to reduce turbulence in the bowl to make the liquid clear, reduced turbulence makes the screw flight discharge port better protected for anti-abrasion, so the screw conveyor has a longer service life.

For special high-concentration and high-viscosity materials, a double cone design can be used, that is, the cone drum has two beach angles. The double beach angle greatly improves the resistance of slag discharge and increases the treatment capacity under the condition of increasing the slag dryness and liquid clarity.
The wear-resistant sleeve of the solid discharge port is a special hard tungsten carbide sleeve, of which the wear resistance is extremely high, and not fragile.
The overflow weir plate has a convenient and flexible design for adjusting the depth of the liquid pool to meet the requirements of dryness and wetness and clarity of materials under various working conditions.
The collection box cover of the small model is assisted to open by a gas spring, and it can support and protect safety.
The large model adopts a labor-saving lid opening device, and a single person can lift the lid of the collection box, reducing the labor intensity of workers and facilitating equipment maintenance.
Each type of the main bearing is designed with a hydraulic disassembly structure, which reduces the tension required to remove the main bearing by 90%, and reduces the risk of damage to the bearing itself and the high precision parts when the bearing is removed.
After each main rotary part is machined by high precision CNC equipment, the centrifuge is treated with three dynamic balance processing again, including the 1800RPM medium speed dynamic balance in the main rotary body component, the actual working speed high-speed dynamic balance, and the whole machine balance, so as to ensure the stable operation of the centrifuge under the high-speed working condition.
The screw propeller is protected by a replaceable wear-resistant alloy plate with long service life and easy maintenance.
Some models adopt the open-type screw blade, greatly enhancing the centrifuge processing capacity. Screw propeller utilizes stainless steel, after high-temperature solution treatment, not easy to deform, has good corrosion resistance, good strength stiffness, and long service life.
Two motors are arranged at one end of the centrifuge saving much space; the structure is compact for the operation and maintenance of the centrifuge while avoiding the accident of the motor damage caused by the material leakage at the inlet end.
The main bearing adopts premium SKF series high-end bearings with long service life. Depending on the user’s choice, it can also be equipped with an automatic lubrication system.
The grease lubrication system for the main bearing of the small model can be equipped with a semi-automatic or fully-automatic batch grease lubrication system, which can provide full and reliable lubrication for the main bearing, reduce the labor intensity of the workers and improve the service life of the bearing.
The main bearing of the large machine adopts the oil injection automatic circulation lubrication system, which has the function of cleaning and cooling the main bearing, and the service life of the main bearing is greatly improved.
With complete machine monitoring and alarm system. When overload, short