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North America’s First Tree-Free Pulp Mill, Paper360º March/April 2019

North America’s First Tree-Free Pulp Mill, Paper360º March/April 2019

IDEAS Digital Twin Technology for Evaporation Plants, Paper360º September/October 2019

IDEAS Digital Twin Technology for Evaporation Plants, Paper360º September/October 2019

Use of Ozone for Cooling Towers. Paper360º July/August 2020

Use of Ozone for Cooling Towers. Paper360º July/August 2020

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.

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

Project Wolfpack Springs to Life, Paper360º September/October 2021

Project Wolfpack Springs to Life, Paper360º September/October 2021

The Shortest Route to Fiber Quality, Paper360 May/June 2019

The Shortest Route to Fiber Quality, Paper360 May/June 2019

Facing the Market, Paper360 May/June 2019

Facing the Market, Paper360 May/June 2019

Continuous digester rapid thinning, TAPPI Journal June 2024

ABSTRACT: Carbon steel continuous digesters built after the early 1980s are fully stress relieved, so stress corrosion cracking has been less of a concern. However, these newer digesters were designed to run modified cooking processes that have turned out to be much more corrosive than those running with conventional cooking. This corrosion is mainly associated with softwood digesters and appears to be flow related. Average corrosion rates of 40 mil/year are possible on the exposed shell between the wash and extraction screens. The corrosion patterns are visually distinct from surfaces in the upper digester and below the wash screens. This paper goes into practical detail on where it occurs, the causes, visual identification, inspection planning and results evaluation, and finally, how to mitigate this damage, which consists of applying a corrosion resistant barrier. Some discussion on dealing with general corrosion throughout the digester is included.

Taking the Guesswork Out of Decarbonizing Pulp and Paper Mills, Paper360º September/October 2024