Estimation of pulp yield in industrial oxygen-alkali delignification of softwood kraft pulp

Nordic Pulp and Paper Research Journal

Volumn 17, Issue 4, 2002, Pages 401-404

  Ala Kaila, Kari ^a   Salmela, Maria ^b   Alén, Raimo ^b  

^a Metsä Botnia   (Finland)

^b UNIVERSITY OF JYVÄSKYLÄ   (Finland)

Author keywords

Analysis; Delignification; Estimation; Filtrate; Kraft pulp; Oxygen; TIC; TOC; Yield

Indexed keywords

DELIGNIFICATION; PAPER AND PULP MILLS; SOFTWOODS;

SCANDINAVIAN SOFTWOOD KRAFT PULP;

KRAFT PULP;

ALKALIS; DELIGNIFICATION; KRAFT PAPERS; OXYGEN; PROCESSES; SOFTWOODS; YIELD;

EID: 0036950966     PISSN: 02832631     EISSN: None     Source Type: Journal    
DOI: 10.3183/npprj-2002-17-04-p401-404     Document Type: Article

References (23)

1. Ala-Kaila, K., Reilama, I. (2001): Stepwise delignification response in an industrial two-stage oxygen-alkali delignification process. Pulp Pap. Can. 102 (6), 53.
2. Ala-Kaila, K., Salmela, M., Alén R. (2002): Estimation of selectivity in Industrial oxygen-alkali delignification of softwood kraft pulp. Nordic Pulp Paper Res. J.,17 (4), 405
3. Alén, R., Hartus, T. (1988): UV spectrophotometric determination of lignin from alkaline pulping liquors. Cellul. Chem. Technol. 22 (6), 613.
4. Alén, R., Sjöström, E. (1991): Formation of low-molecular-mass compounds during the oxygen delignification of pine kraft pulp. Holzforschung 45, Supplement, p. 83.
5. Biermann, C.J., McGinnis, G.D. (1990): Analysis of Carbohydrates by GLC and MS, 2nd Edition, CRC Press, Boca Raton, FL, USA.
6. Bokström, M., Nordén, S. (1998): Extended oxygen delignification, Proc. Pulp Bleaching Conf., Helsinki, Finland, June 1998, Book 1, p. 23.
7. Dahlman, O., Mörck, R., Knuutinen, J. (1999): Analysis of bleach liquors. In: Sjöstrtöm, E., Alén, R. (Eds.), Analytical Methods in Wood Chemistry, Pulping and Papermaking, Springer-Verlag, Berlin, Germany.
8. Gellerstedt, G., Lindfors, E.-L. (1987): Hydrophilic groups in lignin after oxygen bleaching. Tappi J. 70 (6), 119.
9. Hartler, N., Norrström, H., Rydin, S. (1970): Oxygen-alkali bleaching of sulphate pulp. Svensk Papperstidn. 73 (21), 696.
10. Holmbom, B. (2000): Resin reactions and deresination in bleaching. In: Back, E.L., Allen, L.H. (Eds.), Pitch Control, Wood Resin and Deresination, TAPPI Press, Atlanta, GA, USA.
11. Lai, Y.-Z., Funaoka, M., Chen, H.-T. (1994): Oxygen bleaching of kraft pulp, 1. Role of condensed units. Holzforschung 48 (4), 355.
12. Malinen, R. (1975): Behaviour of wood polysaccharides during oxygen-alkali delignification. Paperi Puu 57 (4a), 193.
13. McDonough, T.J. (1996): Oxygen Delignification. In: Dence, C.W., Reeve, D.W. (Eds.), Pulp Bleaching - Principles and Practice, Tappi Press, Atlanta, GA, USA.
14. McDonough, T.J., Burton, J.T., Yethon, A.E. (1999): A model for predicting yield in oxygen delignification of softwood kraft pulps, Proc. Tappi Pulping Conf., Orlando, FL, USA, October 1999, Book 1, p. 171.
15. Niemelä, K., Alén, R. (1999): Characterization of pulping liquors. In: Sjöström, E., Alén, R. (Eds.), Analytical Methods in Wood Chemistry, Pulping and Papermaking, Springer-Verlag, Berlin, Germany.
16. Olm, L., Teder, A. (1979): The kinetics of oxygen bleaching. Tappi 62 (12), 43.
17. Pfister, K., Sjöström, E. (1979): Characterization of spent bleaching liquors, 5. Composition of material dissolved during oxygen-alkali delignification. Paperi Puu 61 (8), 525.
18. Pfister, K., Sjöström, E. (1978): Characterization of spent bleaching liquors, 1. Ultrafiltration of effluents from conventional and oxygen bleaching sequences. Svensk Papperstidn. 81 (6), 195.
19. Ristolainen, M. (1999): Analysis of the Organic Material Dissolved During Totally Chlorine-Free Bleaching. Doctoral Thesis, University of Jyväskylä, Department of Chemistry, Laboratory of Applied Chemistry, Jyväskylä, Finland.
20. Rööst, C., Jönsson, T. (2001): Total organic carbon, TOC, as a tool to estimate pulp yield in the bleach plant. Nordic Pulp Paper Res. J. 16(4), 261.
21. Sjöström, E. (1981): The chemistry of oxygen delignification. Paperi Puu 63 (6-7), 438.
22. Vuorinen, T., Alén, R. (1999): Carbohydrates. In: Sjöström, E., Alén, R. (Eds.), Analytical Methods in Wood Chemistry, Pulping and Papermaking, Springer-Verlag, Berlin, Germany.
23. Väänänen, K. (2000): "Analysis of the Pulp-Derived Components Formed During Oxygen-Alkali Delignification. MSc Thesis, University of Jyväskylä, Department of Chemistry, Laboratory of Applied Chemistry, Jyväskylä, Finland, (In Finnish).