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Hill, J., Johansson, L. & Mörseburg, K. (2017). ATMP pulping of Norway spruce: Pulp property development and energy efficiency. Nordic Pulp & Paper Research Journal, 32(1), 70-86
Open this publication in new window or tab >>ATMP pulping of Norway spruce: Pulp property development and energy efficiency
2017 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 32, no 1, p. 70-86Article in journal (Refereed) Published
Abstract [en]

ATMP pilot refining trials on Norway spruce were conducted. The ATMP configuration consists of selective wood disintegration and targeted application of chemicals when defibration already is initiated in order to achieve energy-efficient final fibre separation and development. ATMP was compared to TMP and RTS. The TMP like character was maintained despite of differences in pre-treatment, chemicals and primary stage refining energies. The fractional composition of the pulps was, however, altered. Bauer McNett R14 fraction exhibited the largest differences followed by P200 fraction. Thus different process alternatives produced pulps with different fingerprints. The amount of the R14 fibres is important as these tend to cause surface roughness impairing printability. Regardless of strategy, the ATMP pulp properties at equal tensile index (44 Nm/g) were equal or superior to those achieved by TMP or RTS refining. The main difference was the required specific energy input, ranging from 1.71 (TMP) to 1.05 MWh/BDT (ATMP with bisulphite addition). Primary stage refining was explored from multiple trials with the same process configuration and chemistry. The higher the specific energy applied the better is the energy efficiency. Furthermore established refining theories appear inadequate in describing the differences between process alternatives with respect to energy efficiency and pulp property development.

National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:ri:diva-29296 (URN)10.3183/NPPRJ-2017-32-01-p070-086 (DOI)2-s2.0-85016421780 (Scopus ID)
Available from: 2017-04-18 Created: 2017-04-18 Last updated: 2019-01-16Bibliographically approved
Mörseburg, K., Hill, J. & Johansson, L. (2016). ATMP refining of Norway spruce - Defibration characteristics and fibre wall properties. Nordic Pulp & Paper Research Journal, 31(3), 386-400
Open this publication in new window or tab >>ATMP refining of Norway spruce - Defibration characteristics and fibre wall properties
2016 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 31, no 3, p. 386-400Article in journal (Refereed) Published
Abstract [en]

Defibration and fibre development patterns were investigated for the novel ATMP refining process, based on pilot scale trials with Norway spruce chips. ATMP refining with different chemical agents was compared to RTS refining with and without Impressa-finer (RT) and Fiberizer (F) pre-treatment. RT-F pre-treatment significantly improved both initial defibration, axial fibre splitting and fibre flexibility, compared to RTS primary stage refining without pre-treatment. Both types of investigated ATMP process chemistry - hydrogen peroxide combined with magnesium hydroxide under alkaline conditions (P) or acid sodium bisulphite (S) added to the primary refiner dilution water - further improved the fibre separation of RT-F pre-treated wood during primary stage RTS refining. This is largely attributed to enhanced fibre swelling. S-treatment facilitated frequent fibre separation within or close to the S2 wall layer, yielding extremely low shive levels and well-fibrillated, thin-walled fibres early in the process. S-treatment also rendered stiffer fibres, which made them susceptible to breakage, axial splitting and internal delamination. P-application is proposed to affect primarily the interior layers of the fibre walls, facilitating rapid fibre wall swelling towards the lumen, fibre softening and flexibilization.

Keywords
ATMP, Defibration, Energy efficiency, Fibre development, High-consistency refining, Pre-treatment, RTS, TMP
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:ri:diva-18929 (URN)10.3183/npprj-2016-31-03-p386-400 (DOI)2-s2.0-84982104879 (Scopus ID)
Available from: 2016-10-26 Created: 2016-10-26 Last updated: 2019-06-11Bibliographically approved
Mörseburg, K., Hill, J., Nyseth, T.-E. & Johansson, L. (2014). Understanding energy efficiency of different refining concepts from fibre and fines quality (ed.). In: : . Paper presented at Presented at the International Mechanical Pulping Conference, June 2-5th 2014, Helsinki, Finland.
Open this publication in new window or tab >>Understanding energy efficiency of different refining concepts from fibre and fines quality
2014 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Comparative pilot refining trials with Norway spruce chips were conducted in order to gain a better understanding of the principal mechanisms on fibre level for achieving radical energy reduction in the novel ATMP refining concept. The ATMP pulping configurations proved superior energy efficiency in pulp quality development, compared to TMP, RTS and F-RTS concepts. Development of high tensile strength did not progress at the expense of light scattering, even with process chemicals present. Extensive testing of individual particles in long fibre, middle and fines fractions in combination with analyses of properties of fraction sheets has shown that Impressafiner/Fiberizer pre-treatment opens the wood structure, allowing for early development of desired single fibre properties and generation of fibrillar fines. Peroxide combined with magnesium hydroxide affected the interior of the fibre walls, thereby facilitating improved fibre flexibility, collapsibility and swelling. Bisulphite mainly affected the fibre length distribution, reducing the coarse fraction R14 and promoting the generation of considerable amounts of coarse fines and middle fraction particles.

National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:ri:diva-9673 (URN)2-s2.0-85067736532 (Scopus ID)
Conference
Presented at the International Mechanical Pulping Conference, June 2-5th 2014, Helsinki, Finland
Available from: 2016-09-12 Created: 2016-09-12 Last updated: 2019-08-14Bibliographically approved
Mörseburg, K., Imppola, A., Johansson, L. & Ertsås, P. (2013). Effects of Inlet Pulp Quality and Specific Energy Consumption in Mill-Scale low consistency refining of Mechanical Pulp (ed.). In: : . Paper presented at 8th Fundamental Mechanical Pulping Research Seminar, Åre, Sweden.
Open this publication in new window or tab >>Effects of Inlet Pulp Quality and Specific Energy Consumption in Mill-Scale low consistency refining of Mechanical Pulp
2013 (English)Conference paper, Published paper (Refereed)
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:ri:diva-9660 (URN)
Conference
8th Fundamental Mechanical Pulping Research Seminar, Åre, Sweden
Available from: 2016-09-12 Created: 2016-09-12 Last updated: 2018-08-13Bibliographically approved
Gorski, D., Mörseburg, K., Olson, J. & Luukkonen, A. (2012). Fibre and fines quality development in pilot scale high and low consistency refining of ATMP (ed.). Nordic Pulp & Paper Research Journal, 27, 872-881
Open this publication in new window or tab >>Fibre and fines quality development in pilot scale high and low consistency refining of ATMP
2012 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 27, p. 872-881Article in journal (Refereed) Published
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:ri:diva-9602 (URN)
Available from: 2016-09-12 Created: 2016-09-12 Last updated: 2018-08-13Bibliographically approved
Gorski, D., Kure, K.-A. & Mörseburg, K. (2011). On the relationship between improved energy efficiency in high-consistency refining, fibre and fines properties and critical paper properties (ed.). In: : . Paper presented at International Mechanical Pulping Conference, Xian, China.
Open this publication in new window or tab >>On the relationship between improved energy efficiency in high-consistency refining, fibre and fines properties and critical paper properties
2011 (English)Conference paper, Published paper (Refereed)
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:ri:diva-9635 (URN)
Conference
International Mechanical Pulping Conference, Xian, China
Available from: 2016-09-12 Created: 2016-09-12 Last updated: 2018-08-13Bibliographically approved
Gorski, D., Mörseburg, K., Axelsson, P. & Engstrand, P. (2011). Peroxide-based ATMP refining of Spruce: Energy efficiency, fibre properties and pulp quality (ed.). Nordic Pulp & Paper Research Journal, 26, 47-63
Open this publication in new window or tab >>Peroxide-based ATMP refining of Spruce: Energy efficiency, fibre properties and pulp quality
2011 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 26, p. 47-63Article in journal (Refereed) Published
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:ri:diva-9590 (URN)10.3183/NPPRJ-2011-26-01-p047-063 (DOI)
Available from: 2016-09-12 Created: 2016-09-12 Last updated: 2018-08-13Bibliographically approved
Rusu, M., Mörseburg, K., Gregersen, Ø., Yamakawa, A. & Liukkonen, S. (2011). Relation between fibre flexibility and cross-sectional properties (ed.). BioResources, 6, 641-655
Open this publication in new window or tab >>Relation between fibre flexibility and cross-sectional properties
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2011 (English)In: BioResources, ISSN 1930-2126, E-ISSN 1930-2126, Vol. 6, p. 641-655Article in journal (Refereed) Published
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:ri:diva-9594 (URN)
Available from: 2016-09-12 Created: 2016-09-12 Last updated: 2018-08-13Bibliographically approved
Gorski, D., Mörseburg, K. & Johansson, L. (2011). Role of equipment configuration and process chemicals in peroxide-based ATMP refining of spruce (ed.). Nordic Pulp & Paper Research Journal, 26, 233-247
Open this publication in new window or tab >>Role of equipment configuration and process chemicals in peroxide-based ATMP refining of spruce
2011 (English)In: Nordic Pulp & Paper Research Journal, ISSN 0283-2631, E-ISSN 2000-0669, Vol. 26, p. 233-247Article in journal (Refereed) Published
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:ri:diva-9586 (URN)
Available from: 2016-09-12 Created: 2016-09-12 Last updated: 2018-08-13Bibliographically approved
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-5030-7954

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