Dryer fabrics, often called dryer “felts”, are used to hold paper against the outer surfaces of steam-heated drying cylinders. The pressure from the dryer fabrics increases the rate of heat transfer from the dryer to the paper. The pressure that is applied to the paper depends on the fabric tension and the diameter of the dryer. The pressure can be calculated, as a first approximation, by the equation:
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Written by Greg Wedel
on September 16, 2014.
Kadant Johnson Inc. has expanded its corrugator steam and condensate handling systems to now include Donahue steam systems, Donahue steam traps, and corrugator audit services.
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Written by Danielle Rohrer
on August 06, 2014.
It has been well-documented that the distance between the condensate entrance of a syphon and the dryer shell, referred to as the syphon clearance, has considerable influence on the operational efficiency of a paper dryer. Suboptimal clearance adversely affects heat transfer capacity and the cross-machine temperature uniformity of the cylinder.
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Written by Jerry Timm
on July 09, 2014.
Dryer bars are axial bars placed on the inside of steam-heated paper dryers to create turbulence in the rimming condensate layer. If the spacing of the bars is chosen correctly, resonant waves are created in the condensate film, between each pair of bars.
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Written by Jerry Timm
on May 27, 2014.
Increased visibility into the system, from boiler to condensate return, maximum heat transfer, and improved runnability are what top-performing corrugators are saying can make a critical difference in their plants - allowing them to run consistently at cut-off knife speeds.
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Written by Danielle Rohrer
on April 01, 2014.
