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Optimize paper machine drying energy with Valmet XT Control

Drying accounts for 80% of thermal energy costs. Optimization of the paper machine hood and air systems with the XT Control system can significantly reduce these costs.

Winding principles part 2 - effect and elements of nip pressure

The relationship between rider roll pressure and shipping roll hardness is neither simple nor direct. This second article in the Winding Principles series explores the interrelationship between rider roll pressure, relief pressure, roll weight and nip load.

Mill Safety - Lockout procedures save lives and equipment

Locking out power sources and drives is an important safety procedure. If not done, components can be started while personnel are out of the operator's sight.

Reel primary arm nip relief methods reduce bottom waste at turnup

Excessive bottom waste occurs during turn-ups where there is insufficient primary arm nip relief at the reel. To avoid this, primary arm nip force control should start before turn-up and continue smoothly as the building parent reel travels down along the reel drum to the secondary arms at the kickout rails.

Winding principles part 3 - drum torque control methods, summary

When web tension and drum nip pressure are constant, drum torque will assure uniform or diminishing roll hardness from the core toward the outside of the rolls.

Keys to optimize drying efficiency; start with the felt tension

Increased felt tension can optimize drying efficiency and improve paper quality. However, a thorough evaluation of machinery and close monitoring of felt tension, along with a complete maintenance program, are the keys to a headache-free dryer section.

White water opportunities for energy, fiber & water savings (webinar)

Most operating PMs have opportunities for cost savings via improvements in treatment and use of the excess white water from forming and press sections - WEBINAR

Floor protection in recovery boilers with decanting floors

Optimizing both the floor protection methods and materials and the cooling, washing and cleaning practices can yield significant savings in mill outage time and corresponding increases in mill production and reduced risk of mechanical damage due to mechanical cleaning or hydro blasting during floor cleaning.

Explanation of size press edge wipe operation and proper setup

Improper setup of the edge wipe when running starch means poor doctoring results outside the sheet path. Extension past the holder is a critical part of setup.

Troubleshooting roll defects - causes and corrective actions

Wound roll defects are described and possible causes and associated corrective actions are presented for each defect.