The main use of a flash dryer is to dry residual moisture from centrifuged cakes or powders. In order to dry the powder, hot air flying at a high speed is brought into contact with it. The powder is pneumatically transported for separation in a cyclone or a bag filter while being dried with heat. The only dry powder leaves the drying chamber thanks to a product classifier.

Material for flash drying

You must be able to separate your fine materials from the moisture that will unavoidably accompany them before you can turn them into profit for your business. Examples of fine materials include potash, phosphate, limestone fines, alumina, trona, clays, talc, and other mineral products. However, drying delicate textiles can be expensive, time-consuming, and incredibly energy-inefficient. Here are some sophisticated Flash Dryer solutions to counteract these drawbacks.

Basics of Flash drying

A flash dryer's most basic function is to spread the raw material into a stream of heated air (or gas). The material is swiftly transported through a drying duct by the heated air. The moisture on the surface of each particle is flashed off as the raw feed goes through the hot air stream. Cyclones and bag filters at the end of the drying duct separate the dried material from the hot air stream.

Flash dryers are good choices for

The constant-rate drying process uses high-temperature gas to dry material with high moisture content. Material is continuously fed, dried, and transported through a duct. An exhaust gas cyclone or bag filter in a flash dryer system separates the processed material from the exhaust gas. 

Process for the flash drying process

FLASH stands for instantaneous or quick drying of items.

Moisture dispersion

The proximity of the wet surface to the drying medium is how this is described (hot air or gas). Product dispersers like mechanical scatterers, double paddle feeders, cage mills, etc. are used in flash dryers to achieve this. with the addition of dried goods to the feed. 

Agitation

High gas velocities are used in flash dryers to achieve agitation or turbulence. The vapor film is continuously wiped away from wet particles. As a result, moisture evaporation happens almost instantly.

Particle structure

Materials with capillaries will be able to rapidly evolve moisture from internal areas to the surface, leading to quick drying action. It's challenging to dry dense particles in a flash-drying system when they have no cavities.

Temperature differential

In flash drying, a high initial temperature can be achieved due to short contact times, resulting in never exceeding the gas's wet bulb temperature unless all surface moisture has been removed. 

Particle size

The process of drying entails the removal of moisture from within the particle evaporation. This transfer occurs most readily when smaller particles are involved.

Features 

• Short retention time

• Perfect for heat sensitive product

• NO alteration required

• Instantaneous removal of humidity

• Few mobile parts make up this simple drying system

Final words

Now we have discussed everything in this article regarding flash drying. Flash dryer is useful in making biomass wood pellets. If you want to use wood pellets, the flash dryer manufacturer can provide you with the wood pellets. Ecostan can provide you with the biomass wood pellets