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OptiDry Coat dryers

Innovative, energy efficient air dryers for paper and board making

OptiDry Coat air dryers are designed for high drying capacity. Aided by patented air dryer nozzles, the dryers achieve uniform evaporation with minimum energy consumption, high efficiency and excellent runnability. We can prove you get the best paper quality and lowest energy consumption with Valmet air dryers.

Coating drying is very energy demanding process and with air dryers it is possible to cut to half the energy costs of it. The energy efficiency of Valmet air dryers ranges from 70 to 90 % and respectively the energy efficiency of infrared dryers only from 30 to 40 %. So energy savings with air drying are 50 % or more compared to infrared drying. The OptiDry Coat air dryers are high efficiency coating dryers for all coated paper and board grades. They can be used for both, new machines and rebuilds.

In the figure above: energy consumption and specific evaporation of OptiDry Coat compared to infrared dryers

There are basically two kind of OptiDry Coat air dryers with several applications:
• OptiDry Coat high intensity, energy efficient air dryer for replacing IR dryers.
• OptiDry Coat air dryers for all the coating drying. Several applications with heating and layout.

Drying with OptiDry air dryers gives excellent

  • energy efficiency
  • drying capacity
  • end product quality
  • runnability along with
  • easy and low cost maintenance
  • better working environment
  • less fire hazard
  • environmentally friendly approach

OptiDry Coat high intensity air dryer is suitable for positions where there earlier have been only IR dryers. We have several running paper and board machine references to support this statement. Start saving your energy costs with OptiDry air drying family and PowerFloat nozzles.

Customer success stories

Energy savings with OptiDry Coat air dryers

Energy savings with OptiDry Coat air dryers

Removing the old infrared dryers resulted in energy savings of up to 45% as Hansol Daejeon rebuilt its PM 32 board machine with OptiDry Coat air drying technology. Removing the old infrared dryers has also improved safety and reduced the maintenance and cleaning time at the stations.

Powerful results in a beautiful location

Powerful results in a beautiful location

Mill Production Manager Antonio Di Blas says: “We got it all - 50% gas savings, better paper quality, better working conditions, better availability, and smaller maintenance costs.”

Up to 35% saving in coating drying energy means a significant investment payback for Sappi’s Stockstadt mill.

Up to 35% saving in coating drying energy means a significant investment payback for Sappi’s Stockstadt mill.

Up to 35% saving in coating drying energy means a significant investment payback for Sappi’s Stockstadt mill.

Energy-efficient coating drying for Metsä Board rebuilds

Energy-efficient coating drying for Metsä Board rebuilds

“We had previous experience with Valmet’s air drying technology, so we trusted the energy saving calculations and decided to choose high intensity air dryers for our machine. ” says Raimo Salmi, Technical Manager of Metsä Board's Kyro mill.