Optimization

Case Study - PT Rotary Joint with Shield

PT rotary joint with integral protective shield keeps debris out of the sealing area and enhances safety around the rotary joint.

Written by Danielle Rohrer on March 29, 2016.

Steam, Paper Drying, and the Bottom Line

Because energy drives the papermaking process, steam is found in many energy streams in a paper mill. Steam is used to cook fibers for improved sheet strength, heat stock for improved drainage, heat process air for ventilation, heat dryers to dry paper, and selectively heat the web for improved gloss and smoothness.

Written by Wes Martz on October 13, 2015.

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:

Written by Greg Wedel on September 16, 2014.

Dryer Syphons

It has been well-documented that the distance between the condensate entrance of a syphon and the dryer shell, referred to as the syphon clearance, has considerable influence on the operational efficiency of a paper dryer. Suboptimal clearance adversely affects heat transfer capacity and the cross-machine temperature uniformity of the cylinder.

Written by Jerry Timm on July 09, 2014.

The Importance of Using Genuine Parts

For the lowest cost of ownership, use genuine, qualified, original equipment parts.

Written by Al Ives on May 13, 2014.

Steam Hammer in Continuous Casting of Steel

Continuous casting of steel is the process where molten steel is solidified into a semi-finished billet, bloom, or slab for subsequent rolling in the finishing mills. Effective water cooling of continuous casting rolls is critical. Any drop in water pressure, even from a leaking hose, can result in reduced water flow causing water to remain in the rolls longer than recommended.

Written by Frank Marsden on November 10, 2015.

Pressure Powered Pump Alternative Reduces Maintenance

There are thousands of electric centrifugal pumps in service used to pump condensate. These pumps are either simplex or duplex condensate pump units and operated with a mechanical float switch assembly.

Written by Mike Sneary on October 28, 2014.

Dryer Fabric Cleaners Can Offer High Performance and Roi

Recycled fiber provides many benefits to our environment. It can also have an adverse effect on a papermaker’s energy efficiency and production goals.

Written by Dave Behrens on July 29, 2014.

Dryer Bars and Paper Dryer Performance

Dryer bars are axial bars placed on the inside of steam-heated paper dryers to create turbulence in the rimming condensate layer. If the spacing of the bars is chosen correctly, resonant waves are created in the condensate film, between each pair of bars.

Written by Jerry Timm on May 27, 2014.

White Water Recovery – the Benefits Go Beyond Just Saving Water

Corporate sustainability statements often emphasize water reduction as a goal associated with minimizing a company’s environmental footprint and impact on the community. Being a “good neighbor” by optimizing the use of water and reducing water costs are the two most obvious benefits.

Written by Dave McGowan on May 06, 2014.

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Optimization