Spin Flash Dryers
Our Spin Flash dryers are designed for continuous drying of cohesive and non-cohesive pastes and filter cakes, as well as high-viscosity liquids. The main components in the Spin Flash plant are a feed system, the patented drying chamber and a bag filter.
FEATURES
Widely acclaimed by customers in a variety of industries all over the world, this patented process provides a faster and more energy-efficient alternative to spray drying. With more than 350 Spin Flash dryer installations world-wide SPX FLOW combines experience and cutting-edge technology into added-value solutions for our customers.
Feed System
The feed system consists of a feed vat where a discontinuous flow of product is buffered and fragmented by an agitator prior to continuous drying. A variable speed feed screw (or pump in the case of fluid feed) forwards the product to the drying chamber.
Drying Chamber
The rotor at the conical base of the drying chamber fluidizes product particles in a drying-efficient hot air flow pattern in which any wet lumps are rapidly disintegrated. Hot air is supplied by a temperature-controlled air heater and speed-controlled fan, entering the drying chamber at a tangent in order to establish a turbulent, whirling air flow.
Airborne, fine particles pass through a classifier at the top of the drying chamber, while larger particles remain in the air flow for further drying and powdering.
The drying chamber is rigidly designed to withstand pressure shock in the event of explosive combustion of flammable particles. All bearings are effectively protected against dust and heat.
Bag Filter
Powder from the drying chamber is collected in bag filter, while the outlet air leaves the system at the top via a suction fan.
Special Features
Our patented Spin Flash plant features an inverted cone for high velocity air inlet at the base of the drying chambers preventing risk of product built-up. This unique technique has proven to be the customer-preferred method of drying paste in the industrial sector.
State-of-the-art automation systems are available for the Spin Flash drying plants, enabling fully automatic control, process optimization, data logging, traceability, and maintenance scheduling.
Capacity Profile
1 kg/h to 40 tons/h.
Advantages
- High drying efficiency providing low energy costs
- Continuous processing with short processing time
- Low operator overheads and minimum maintenance costs
- Controlled residence time enabling high temperature drying
- Controlled particle size
- Very fine powder production eliminating requirement for milling
- Limited space requirements
- High-pressure, shock-resistant chamber for safe drying of flammable products
- Available in FDA and cGMP compliant configurations