The Veneer Dryer May Be a Longitudinal Dryer or a Jet Dryer

Longitudinal Dryer or Jet Veneer Dryer

The veneer dryer may be a longitudinal dryer, which circulates air parallel to the veneer, or a jet dryer. The jet dryers direct hot, high-velocity air at the surface of the veneers in order to create a more turbulent flow of air. The increased turbulence provides more effective use of dryer energy, thereby reducing drying time. Veneer dryers may be either direct-fired or indirect-heated. In direct-fired dryers, hot combustion gases from an onsite boiler are blended with recirculated exhaust from the dryer to lower the gas temperature. In indirect- heated veneer dryers, air is warmed-over steam coils and circulated over the veneer. Veneer dryers typically have one to three heated zones followed by a cooling zone or section. Each heated zone has a hot air source, fans to move the warm air, and an exhaust vent or stack. The cooling section circulates ambient air over the veneer to reduce the veneer temperature just before it exits the dryer. The veneers must be cooled to prevent glue from curing on the veneers during the layup and glue spreading operations before they reach the plywood press.

Jet Veneer Dryer Pictures 

Technical Parameter for Jet Veneer Dryer

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