Reliable Yankee dryer performance is a key contributor to the smooth operation of every tissue machine. This paper will explore how through the use of 3D TRASAR Technology for Yankee Dryer Systems from Nalco, tissue manufacturers are able to protect this vital mill asset by monitoring/controlling critical parameters within the Yankee dryer condensate system.
When applied, 3D TRASAR Technology for Yankee dryer systems is able to monitor/control the return condensate system to ensure that appropriate chemical treatment programs are applied in response to the dynamic nature of the Yankee dryer steam system. Through examination of the chemical reactions occurring within the return condensate system and customer case histories, this paper reviews the actual performance results achieved through use of this technology including:
• Minimized corrosion in the Yankee dryer. The Nalco Corrosion Stress Monitor (NCSM) and pH measures the corrosion potential of the condensate in the Yankee dryer system as opposed to the bulk condensate. A supplemental amine feed is proportionally controlled based upon changes in the measured corrosion potential.
• Increased machine runnability by minimizing soda straw plugging caused by iron deposition.
• 24/7 monitoring and alarming of the Yankee dryer operational conditions and condensate system to quickly respond to system upsets and provide diagnostic support.
• Analyze the effect of Mechanical, Operational and Chemical (MOC) changes in the steam production and Yankee dryer condensate systems in real time, reducing the production of corrosion by-products.
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