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Pulp Dryer

The web formed by pulp is very moist, and so must be dried before it is pressed to form paper. The pulp dryer uses steam-heated cylinders to apply heat to the web. Heated air is also used in areas where the web is out of contact with the cylinders to enhance water removal.

The web sheets are held against the dryers by long felt loops, which improve the heat transfer. Often, dryers are arranged in sections which operate progressively slowly to allow for sheet shrinkage as drying occurs. This shrinkage can affect web condition and so the process requires a monitoring solution.

Drying sections are typically enclosed to conserve heat, which makes manual inspection difficult. An automated system can be fitted within the section to monitor for defects or process issues without interfering with the pulp drying.

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