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Rotary drum dryers

Rotating drum – or rotary – dryers consist of a drum, several metres in length and ~2 m in diameter, which is inclined at 3–4° to the horizontal and rotates around its axis at a speed of 4-8 RPM. The drum is fitted with internal structures (fins, paddles or blades) which agitate and break up the sludge solids and help them pass along the length of the drum while being dried by a stream of warm air passing along the length of the drum.

Rotary drum dryers related videos

Simulation of rotary dryer operation, Dynamis Source: Dynamis / YouTube

Simulation of rotary dryer operation, Dynamis

A simulation of rotary dryer operation, produced by Dynamis.

Rotary drum dryers features and blogs

PFAS molecule

How do you solve a problem like PFAS?

PFAS (per- and polyfluoroalkyl substances) are generated from the breakdown of fluorinated polymers. The activation barrier for their breakdown is huge and the only fully commercialised processes possibly capable of destroying PFAS are thermochemical ones.

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More process and operation topics…