Pulp & Paper Plants Face Significant Challenges When it Comes to Energy Usage, Reliability, and Product Quality
The pulp dryer is the final stage in the process for producing the specified end product in a pulp mill. The pulp slurry is drained on the 'wire' to create a continuous pulp web, and the wet web passes through a press section to squeeze out excess water before finally passing through a heated drying section. Effective operation of the pulp dryer can be extremely difficult as there are many critical loops on a pulp dryer that require accurate and reliable measurement and control. Basis weight, moisture content, stock flow, head box level, and vacuum and dryer temperature can result in an off-spec end product, or a sheet break and lost production.