Dryer Camera Brings Condensate Behavior to Light
People may be surprised to learn that when a pressurized roll is rotating, you can see what is going on inside the roll.
Read moreFluid Handling
50 Ways to Save Energy in Your Papermaking Process
Kadant’s paper drying energy tips have been helping papermakers improve paper drying and energy use since 1934.
Read moreWritten by Danielle Rohrer on August 16, 2016.
Arkansas Children’s Hospital Delivers Comfort & Efficiency
Arkansas Children’s Hospital has enhanced temperature control and sanitation for surgery while lowering maintenance costs and assuring smooth operations with simple, steam-driven pumps.
Read moreWritten by Danielle Rohrer on May 24, 2016.
What is the lowest operating temperature for a vacuum breaker?
A vacuum breaker is an anti-siphoning check valve used in a variety of applications to prevent a vacuum from developing. When the vacuum breaker valve is sealed, its spring seats a ball against an O-ring.
Read moreWritten by Jan Walter on January 06, 2015.
Using Rotary Unions With Thermal Oil
Rotary unions used with heat transfer oils require special attention during repair to ensure leak-free operation. Heat transfer oils tend to “coke” at high temperatures and deposit material that can settle in the rotary union and adhere to the sealing components.
Read moreWritten by Al Ives on February 03, 2014.
Thermocompressor Installation & Troubleshooting
Thermocompressors can be installed in any orientation, but directing the discharge horizontally or downward is preferred.
Read moreWritten by Jerry Timm on March 28, 2017.
The Case of the Mysterious X-Dimension
All Kadant Johnson PTX® rotary joints have an X-dimension. The X-dimension is the setup dimension used for the initial rotary joint installation and found on the assembly drawing for the specific rotary joint.
Read moreWritten by John Hotovy on June 21, 2016.
Corrugated Packaging Plant Eliminates Thermal Bowing, Improves Bond Between Liner and Medium
A high-volume, high-speed single facer at a corrugated packaging plant located in California (USA) was having issues with poorly bonded board after starting up from a stoppage of any duration. The poor bond between the corrugated medium and liner was resulting in excess waste and lost production.
Read moreWritten by Danielle Rohrer on May 10, 2016.
Paper Dryer Fabric Tension Impacts Dryer Performance
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:
Read moreWritten by Greg Wedel on September 16, 2014.
How to Recover From Flooding in Paper Dryers
When flooded dryers are identified during machine production, and if these issues are steam system related issues, there are several actions that can be taken to restore condensate flow and get the paper dryer back to normal operation.
Read moreWritten by Wayne O'Driscoll on January 21, 2014.
