Penetration of water and black liquor into overthick and treated wood chips

Paperi ja Puu/Paper and Timber

Volumn 90, Issue 2, 2008, Pages 34-39

  Määttänen, Marjo ^a   Tikka, Panu ^a  

^a AALTO UNIVERSITY   (Finland)

Author keywords

Cracked chips; Destructured chips; Knots; Overthick chips; Penetration; Sliced chips; Softwood chips

Indexed keywords

EID: 42149107996     PISSN: 00311243     EISSN: None     Source Type: Trade Journal    
DOI: None     Document Type: Review

References (21)

1. Hartler N, Onisko W: The interpendence of chip thickness, cooking temperature and screening in kraft cooking of pine. Svensk Papperstidning 65(1962):22, 905-910.
2. Akhtdruzzaman, A.F.M, Virkohi N.-E.: Influence of chip dimensions in kraft pulping Part III. Effect on delignification and a mathematical model for predicting the pulping parameters. Paperi ja Puu 61(1979):11, 737-758.
3. Akhtaruzzaman, A.F.M, Virkola N.-E.: Influence of chip dimensions in kraft pulping Part IV. Effect on screened pulp yield and effective alkali consumption; predictive mathematical model. Paperi ja Puu 61(1979):12, 805-814.
4. Gullichsen, J., Kolehmainen. H., Sundqvist, H.: On the non-uniformity of the kraft cook. Paperi ja Puu 74(1992):6, 486-490.
5. Lightfoot R., Premont P.: The influence of size of Anglo chips in pulping. Pulp and Paper Magazine of Canada 63(1962), T141-T144.
6. Hatton, J. V. Keays, J.L.: Effect of chip geometry and moisture on yield and quality of kraft pulps from western hemlock and black spruce. Pulp & Paper Mag.Can 74(1973:1, T79-87.
7. Hatton, J. V: Quality and kraft pulping characteristics of residual chips. Tappi 58(1975):2, 110-114.
8. Colombo, P., Corbetta, D., Pirotta, A., Ruffini, G.: Svensk Papperstid. 67(1964):12, 505.
9. Christie R.D.: Chip thickness and its effect on pulping needs further study. Pulp & Paper Canada 87(1986):9, 37-43.
10. Axergård, P.: A comparision between refining and recooking of coarse screenings in the production of bleached softwood kraft pulp. Svensk Papperstid. 81(1978):16, 511-518.
11. Allison R. & Graham K.: Reject material in kraft pulp from Kadiata Pine. Part I. Effect of Knotwood. Appita 41(1988):3, 197-202.
12. Choudens C., Lombardo G., Michalowicz G. &Robert A.: Destruction of wood chips in a cylinder press. Paperi ja Puu 67(1985):3, 108-116.
13. Tikka P.O., Tähkänen H. & Kovasin K.: Chip thickness vs. kraft pulping performance. Part 2: Effect of chip thickness screening on cooking, oxygen delignification and bleaching of softwood kraft batch pulp. TAPPI Pulping (conference, November 1-3. 1993 Atlanta, USA, p.833-838.
14. Määttänen M.: Ylipaksun hakejakeen käsittelymenetelmät ja niiden vaikutus havusulfaattisellun ominaisuuksiin. Diplomityö Puunjalostustekniikan osasto 1997, Espoo. 76 s.
15. Sainio M. & Walsh S.: Optimizing birch chips for kraft pulp cooking. Paperi ja Puu 82(2000):2, 103-107.
16. MacLeod M., Don A.. Young J., Smith D.. Kreft K., Tremblay M.-A. & Bessette P.-A.: Crushing: Is this any way to treat overthick softwood chips for kraft pulping? Pulp & Paper Mag. Can 106(2005):2, 44-51.
17. Määttänen M, Tikka P.: Penetration of water into industrial softwood chips - Influence of physical properties. Paperi ja Puu 90(2008): 1, 41-46.
18. Keskinen, K: Kemian laitetekniikan taulukoita ja piirroksia. Otatieto 1989. Helsinki 1990, 76 s.
19. Malkov S., Tikka, P., Gullichsen, J.: Towards complete impregnation of wood chips with aqueous solutions. Part 2: Studies on water penetration into softwood chips. Paperi ja Puu 83(2001):6, 468-473.
20. Stamm, A.J.: Diffusion and penetration mechanism of Liquid into wood. Pulp & Paper Mag.Can 54(1953):2, 56-63.
21. Malkov, S.: Studies on liquid penetration into softwood chips - experiments, models and applications. PhD Thesis, Helsinki University of Technology, 2002.