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Magazine articles
Open Access
Fifth international printing and graphic arts conference: a joint success, TAPPI JOURNAL, June 1991, Vol. 74(6)

Fifth international printing and graphic arts conference: a joint success, TAPPI JOURNAL, June 1991, Vol. 74(6)

Magazine articles
Open Access
Modern management, technology, make skogn significant newsprint maker, TAPPI JOURNAL, March 1991, Vol. 74(3)

Modern management, technology, make skogn significant newsprint maker, TAPPI JOURNAL, March 1991, Vol. 74(3)

Magazine articles
Open Access
Highly corrosion-resistant metals for the pulp and paper industry, TAPPI JOURNAL, March 1991, Vol. 74(3)

Highly corrosion-resistant metals for the pulp and paper industry, TAPPI JOURNAL, March 1991, Vol. 74(3)

Magazine articles
Open Access
Alkaline filler addition and retention, TAPPI JOURNAL, April 1992, Vol. 75(4)

Alkaline filler addition and retention, TAPPI JOURNAL, April 1992, Vol. 75(4)

Magazine articles
Open Access
Annual tappi papermakers conference held in nashville, TAPPI JOURNAL, August 1992, Vol. 75(8)

Annual tappi papermakers conference held in nashville, TAPPI JOURNAL, August 1992, Vol. 75(8)

Magazine articles
Open Access
A suction-roll shell material with improved corrosion-fatigue strength, TAPPI JOURNAL, December 1992, Vol. 75(12)

A suction-roll shell material with improved corrosion-fatigue strength, TAPPI JOURNAL, December 1992, Vol. 75(12)

Magazine articles
Open Access
Papermakers conference draws more than 900 attendees, TAPPI JOURNAL, July 1993, Vol. 76(7)

Papermakers conference draws more than 900 attendees, TAPPI JOURNAL, July 1993, Vol. 76(7)

Magazine articles
Open Access
Sixth international printing and graphic arts conference, TAPPI JOURNAL, May 1993, Vol. 76(5)

Sixth international printing and graphic arts conference, TAPPI JOURNAL, May 1993, Vol. 76(5)

Journal articles
Magazine articles
Open Access
Can carbon capture be a new revenue opportunity for the pulp and paper sector?, TAPPI Journal August 2021

ABSTRACT: Transition towards carbon neutrality will require application of negative carbon emission technologies (NETs). This creates a new opportunity for the industry in the near future. The pulp and paper industry already utilizes vast amounts of biomass and produces large amounts of biogenic carbon dioxide. The industry is well poised for the use of bioenergy with carbon capture and storage (BECCS), which is considered as one of the key NETs. If the captured carbon dioxide can be used to manufacture green fuels to replace fossil ones, then this will generate a huge additional market where pulp and paper mills are on the front line. The objective of this study is to evaluate future trends and policies affecting the pulp and paper industry and to describe how a carbon neutral or carbon negative pulp and paper production process can be viable. Such policies include, as examples, price of carbon dioxide allowances or support for green fuel production and BECCS implementation. It is known that profitability differs depending on mill type, performance, energy efficiency, or carbon dioxide intensity. The results give fresh understanding on the potential for investing in negative emission technologies. Carbon capture or green fuel production can be economical with an emission trade system, depending on electricity price, green fuel price, negative emission credit, and a mill’s emission profile. However, feasibility does not seem to evidently correlate with the performance, technical age, or the measured efficiency of the mill.

Journal articles
Magazine articles
Open Access
Numerical investigation of the effect of ultrasound on paper drying, TAPPI Journal March 2022

ABSTRACT: The paper drying process is very energy inefficient. More than two-thirds of the total energy used in a paper machine is for drying paper. Novel drying technologies, such as ultrasound (US) drying, can be assessed numerically for developing next-generation drying technologies for the paper industry. This work numerically illustrates the impact on drying process energy efficiency of US transducers installed on a two-tiered dryer section of a paper machine. Piezoelectric transducers generate ultrasound waves, and liquid water mist can be ejected from the porous media. The drying rate of handsheet paper in the presence of direct-contact US is measured experimentally, and the resultant correlation is included in the theoretical model. The drying section of a paper machine is simulated by a theoretical drying model. In the model, three scenarios are considered. In the first scenario, the US modules are positioned in the dryer pockets, while in the second scenario, they are placed upstream of the drying section right after the press section. The third case is the combination of the first and second scenarios. The average moisture content and temperature during drying, enhancement of total mass flux leaving the paper by the US mechanism, total energy consumption, and thermal effect of heated US transducers are analyzed for all cases. Results show that the application of the US can decrease the total number of dryer drums for drying paper. This numerical study is based on the US correlation obtained with the US transducer direct-contact with the paper sample. Thus, future work should include US correlation based on a non-contact US transducer.

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