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SG2 700

Product catalog summary

Application
The Alfa Laval SG2-700 decanter is designed for high-performance separation in DDGS production, processing high throughputs of stillage from various grains. It achieves low suspended solids and high cake dryness with reduced power consumption and lower life cycle costs.

Design
The SG2-700 features a compact, in-line welded box beam frame supporting the rotating assembly, which includes both motors for easy installation, quiet operation, and low vibration. The bowl is driven by an electric motor using a V-belt transmission. Components in contact with process media are made from AISI 316 and duplex stainless steel, with wear parts protected by tungsten carbide.

Operating Principles
Separation occurs in a horizontal cylindrical bowl with a screw conveyor. The stillage is fed into the bowl, where centrifugal force separates solids, which are moved by the conveyor to the bowl's conical end for discharge. Clarified liquid exits through adjustable plate dams.

Technical Data
- Bowl diameter: 650 mm (25.6 inch)
- Max. bowl speed: 3100 rpm
- Max. G-force: 3500 G
- Weight: 6500 kg
- Installed power: 137-167 kW (184-225 hp)
- Sound pressure level: 89 dB(A)

Direct Drive
This system allows automatic control of the differential speed between the bowl and conveyor, optimizing liquid clarity and solids dryness. It includes a new gearbox and variable frequency drive, minimizing power loss and ensuring accurate control.

Decanter Core Controller (DCC)
The DCC system, with a graphic interface, controls the Direct Drive based on solids load and monitors various parameters for safe and reliable operation.

Process Optimization
The SG2 decanter can be adjusted for specific requirements by varying conveying speed, pond depth, and feed flow to optimize liquid clarity and solids dryness.

Options
SG2 decanters are available in a three-phase design for simultaneous corn oil separation, cake dewatering, and liquor clarification. They can include a paring disc and are ATEX-compliant for zones 22.

Catalog excerpts

SG2-700 High Performance Decanter for the Process Industry Application Alfa Laval SG2-700 decanters provide the most costeffective, high-performance separation solution currently available for DDGS production. This decanter centrifuges is used to process high throughputs of stillage from all grain types so as to achieving a low level of suspended solids and high cake dryness, with reduced power consumption and lower life cycle costs. Design Alfa Laval designed the SG2-700 decanter with a focus on performance, easy access, reliability and low noise levels. The rotating assembly is supported on a compact, in line, welded box beam frame which includes the both motors for ease of installation, quietness and low vibration. The bowl is driven at the conical end by an electric motor using a V-belt transmission. The bowl, conveyor, casing, inlet tube, outlets and other parts that come into contact with the process media are made of AISI 316 and duplex stainless steel. Parts that are subject to wear are protected with replaceable sintered tungsten carbide or weld applied tungsten carbide. Operating principles Separation takes place in a horizontal cylindrical bowl equipped with a screw conveyor. The product Stillage is fed into the bowl through a stationary inlet tube and is then smoothly accelerated by an inlet rotor. Centrifugal force immediately makes the solids build up on the wall of the bowl. The conveyor rotates in the same direction as the bowl, but at a lower speed, thus moving the solids towards the conical end of the bowl. The solids leave the bowl through the solids discharge openings into the casing. Separation takes place throughout the entire length of the cylindrical part of the bowl, and the clarified liquid leaves the bowl by flowing over adjustable plate dams into the casing.

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How to contact Alfa Laval Contact details for all countries are continually updated on our website. Please visit www.alfalaval.com to access the information direct. PPI00162EN 0702 Technical data SG2-700 Bowl diameter 650 mm (25.6 inch.) Max. bowl speed 3100 rpm Max. G-force 3500 G Weight 6500 kg 137-167 kW Installed power (184-225 hp) Sound pressure level1, dB (A) rel 20ì Pa 89 Direct Drive Direct Drive is a unique system developed by Alfa Laval for automatic control of the differential speed between the bowl and the conveyor. This makes it easy to maintain the best possible balance between...

Open the catalog to page 2

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