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TAPPI News, Paper360º March/April 2020
TAPPI News, Paper360º March/April 2020
Journal articles
Magazine articles
Fundamental understanding of removal of liquid thin film trapped between fibers in the paper drying process: A microscopic approach, TAPPI Journal May 2020
ABSTRACT: In the fabrication of paper, a slurry with cellulose fibers and other matter is drained, pressed, and dried. The latter step requires considerable energy consumption. In the structure of wet paper, there are two different types of water: free water and bound water. Free water can be removed most effectively. However, removing bound water consumes a large portion of energy during the process. The focus of this paper is on the intermediate stage of the drying process, from free water toward bound water where the remaining free water is present on the surfaces of the fibers in the form of a liquid film. For simplicity, the drying process considered in this study corresponds to pure convective drying through the paper sheet. The physics of removing a thin liquid film trapped between fibers in the paper drying process is explored. The film is assumed to be incompressible, viscous, and subject to evaporation, thermocapillarity, and surface tension. By using a volume of fluid (VOF) model, the effect of the previously mentioned parameters on drying behavior of the thin film is investigated.
Journal articles
Magazine articles
Alternative “green” lime kiln fuels: Part II—Woody biomass, bio-oils, gasification, and hydrogen, TAPPI Journal May 2020
ABSTRACT: This paper is the second of a two-part series on “green” lime kiln fuels. The first part of this work reviews the use of pulp mill and recovery byproducts as either full or partial replacement of oil or natural gas in the kiln. The second part reviews the use of various forms of woody biomass, bio-oils, gasification and hydrogen as potential carbon neutral or carbon-free lime kiln fuels. Several of these options require specialized burners to supply the fuel to the kiln and high-quality metallurgy to withstand the acidic conditions of the fuel.
Journal articles
Magazine articles
SetPoint: Creating a New Normal, Paper360º May/June 2020
SetPoint: Creating a New Normal, Paper360º May/June 2020
Journal articles
Magazine articles
Safety Leaders Should ´Go to the Gemba’, Paper360º May/June 2020
Safety Leaders Should ´Go to the Gemba’, Paper360º May/June 2020
Journal articles
Magazine articles
The Coronavirus and the European Pulp and Paper Industry, Paper360º May/June 2020
The Coronavirus and the European Pulp and Paper Industry, Paper360º May/June 2020
Journal articles
Magazine articles
COVID-19: The Industry Responds, Paper360º May/June 2020
COVID-19: The Industry Responds, Paper360º May/June 2020
Journal articles
Magazine articles
Spotlight on Global Achievements, Paper360º May/June 2020
Spotlight on Global Achievements, Paper360º May/June 2020
Journal articles
Magazine articles
´We Must Grow—In All Areas’, Paper360º May/June 2020
´We Must Grow—In All Areas’, Paper360º May/June 2020
Journal articles
Magazine articles
Wireless Sensors Improve Toxic Gas Mitigation in P&P Mills, Paper360º May/June 2020
Wireless Sensors Improve Toxic Gas Mitigation in P&P Mills, Paper360º May/June 2020