Thin-Layer Dryer (ECOFLASH)

The Ecoflash dryer is a contact thin layer dryer using thermal oil or steam to quickly and effectively reduce sludge volume and weight. The process is also fully automatic and can be remotely monitored and controlled.

The product to be treated is introduced into a drying chamber, constituted by a jacketed stator heated with diathermic oil or steam.

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Inside the stator, a cylindrical coaxial rotor with adjustable paddles operates at a peripherical speed of 30 m/s.

The product is centrifuged on the stator in a thin layer with a thickness of 3 - 5 mm, in contact with the hot wall.

The paddles mix and extract the dried product, while an air flow, in counter current, allows the extraction of evaporated water.

The limited amount of air has the only purpose of transporting the evaporated water during the drying process, while all necessary heat is provided by conduction through the wall of the stator.

The drying process is single passage, continuous without back-mixing.

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The main advantages of this technology are:-

• Application with different types of inlet product (organic and inorganic)
• Minimum air flowrate and low emissions
• Minimum plant footprint
• Intermediate dryness possible: 60 - 95 % DS