Fluid Handling

The Causes of Flooding in Paper Dryers

The majority of flooding incidents can be attributed to steam and condensate system issues (poor equipment sizing, incorrect system set-points and incorrect system calibration) and mechanical issues (unreliable or incorrectly installed steam joints and syphons). In this discussion, we will focus on the steam system issues that contribute to flooding.

Written by Wayne O'Driscoll on January 07, 2014.

Why Dryers Flood in Papermaking

At some stage during their working career, papermakers and mill engineers will have encountered at least one instance of flooded dryers in the drying section on their paper machine.

Written by Wayne O'Driscoll on November 26, 2013.

How Does Condensate Behave In Corrugator Rolls?

Condensed steam (“condensate”) that forms inside a heated corrugator roll may be laying on the bottom of the roll (“puddling”), tumbling around inside the roll (“cascading”), or spinning with the shell (“rimming”).

on October 01, 2013.

Recommended Rotary Joint & Rotary Union Piping

Flexible metal hose is used on the inlet and outlet connections of rotary joints and rotary unions to allow for the rotary joint movement and for thermal expansion of piping.

Written by Al Ives on December 11, 2012.

Identifying Flooded Dryers in Papermaking

Flooded paper dryers exhibit a number of tell-tale signs which can be used to identify that the dryer is flooded. The following troubleshooting techniques can be used

Written by Wayne O'Driscoll on December 10, 2013.

How Does Condensate Behavior Relate to Heat Transfer in Corrugator Rolls?

Condensed steam (condensate) that forms inside a heated corrugator roll may be lying on the bottom of the roll (puddling), tumbling around inside the roll (cascading), or spinning with the shell (rimming).

Written by Greg Wedel on October 29, 2013.

What are Rotary Joints & Rotary Unions?

A rotary joint, also referred to as a rotary union or rotating union, is a rotary sealing device that connects rotating equipment to fixed piping for the transfer of steam, water, thermal oil, coolant, hydraulic oil, air, and other media.

Written by Frank Marsden on March 19, 2013.

The Kadant Blog