Cellulose Acetate Spin Flash Dryer

Spin Flash Dryers is used for drying technology of high-viscosity products, pastes and filter cakes widely acclaimed by customers In a variety of industries all over world, if the wet cake is a paste or sludge, swirl flash dryer is the most suited for drying application. The dryer is fitted with a mechanical agitator which helps to disperse the wet cake without any need for back mixing of the dry powder. this process provides a faster and more energy-efficient alternative to spray drying. With quite a few spin flash dryer installations in the world, XINYU combines experience and cutting-edge technology into added-value solutions for our customers.

Principles
The hot air enters into the bottom of the dryer in tangent direction.Under the driving of the stirrer,a powerful rotating wind area is formed.The paste state materials enter into the dryer through the screw charger.Under the powerful function effect of stirring at high-speed roation,the materials are distributed under the function of strike,friction and shearing force.The block state materials will soon be smashed and contact the hot air fully and the materials are heated and dried.The dried materials after the de-watering will go up with the hot-air flow.The grading rings will stop and keep the big particles.Small particles will be sidcharged out of the dryer from the ring center and will be collected in the cyclone and dust collector. The not-fully-dried or big piece materials will be sent to the wall of the equipment by centrifugal force and be smashed again after they fall down to the bottom. 
 

CHARACTERISTICS

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. Using the heat from the airstream, the material dries as it is conveyed. Product is separated using cyclones, and/or bag filters. Typically, cyclones are followed by scrubbers or bag filters for final cleaning of the exhaust gases to meet current emission requirements.
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.

ADVANTAGES

• High drying efficiency and low energy costs
• Direct drying with no initial diluting
• Continuous processing with short drying time
• Low operator overheads and minimum maintenance costs

Feature 
1.The collection rate of finished product is very high.
To adopt cyclone separator with high efficiency and low resistance (the collection rate can be above 98%), together with air chamber type of pulse cloth bag deduster(the collection rate can be above 98%)
2.To control final water content and fine of finished product efficiently 
 To control final water content and fine of finished product through adjusting screener and inlet air speed.
3.no materials stick on the wall 
Continuous high-speed air flow washes out the materials stayed on the wall strongly in order to clear the phenomenon that materials stay on the wall 
4.This machine is good at processing thermal sensitive materials
 The bottom of main machine belongs to high temperature area. The air speed in this area is very high, and the material can hardly contact heat surface directly, so there is no worry about burning and color changing.
5.YIBU 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 an YIBU Spin Flash plant are a feed system, the patented drying chamber and a bag filter. 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 150 YIBU Spin Flash dryer installations world-wide YIBU DRYING combines experience and cutting-edge technology into added-value solutions for our customers. Elevated drying temperatures can be used with many products since the flashing off of surface moisture instantly cools the drying gas without appreciably increasing the product temperature which may damage its quality.
6. Wet material is dispersed into a stream of heated air (or gas) which conveys it through a drying duct. Using the heat from the airstream, the material dries as it is conveyed. Product is separated using cyclones, and/or bag filters. Typically, cyclones are followed by scrubbers or bag filters for final cleaning of the exhaust gases to meet current emission requirements. 
7. 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.
8. 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.
9. 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.
10. 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.
 

APPLICATION

Flash dryers have been used to dry products in many industries including food, chemical, mineral and polymer. A broad range of feed materials including powders, cakes, granules, flakes, pastes, gels, and slurries can be processed. For slurries, pastes, or sticky materials, back mixing of the wet feed with a portion of dry product to produce a suitable conditioned material is required. This technology can also be used for cooling applications.
• Agrochemicals
• Ceramics
• Food and feed products
• Inorganic chemicals
• Organic chemicals
• Pharmaceuticals
• Pigments and dyestuffs