Elemental chlorine-free bleaching of North American hardwood kraft pulps: Evaluation of oxidant-reinforced extraction variables on overall bleaching optimization
Source abstract
Abstract
This investigation evaluates how higher reaction temperatures or oxidant reinforcement of caustic extraction affects chlorine dioxide consumption during elemental chlorine-free bleaching of North American hardwood pulps. Bleaching data from the published literature were used to develop statistical response surface models for chlorine dioxide delignification and brightening sequences for a variety of hardwood pulps. The effects of higher (EO) temperature and of peroxide reinforcement were estimated from observations reported in the literature. The addition of peroxide to an (EO) stage roughly displaces 0.6 to 1.2 kg chlorine dioxide per kilogram peroxide used in elemental chlorine-free (ECF) bleach sequences. Increasing the (EO) temperature by Δ20°C (e.g., 70°C to 90°C) lowers the overall chlorine dioxide demand by 0.4 to 1.5 kg. Unlike what is observed for ECF softwood bleaching, the presented findings suggest that hot oxidant-reinforced extraction stages result in somewhat higher bleaching costs when compared to milder alkaline extraction stages for hardwoods. The substitution of an (EOP) in place of (EO) resulted in small changes to the overall bleaching cost. The models employed in this study did not take into account pulp bleaching shrinkage (yield loss), to simplify the calculations.
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Research context
OpenAlex topics: Lignin and Wood Chemistry
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (34)
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1. Wright, R. “Assessing the competitiveness of China’s expanding pulp and paper industry in a global context.” Presented at the International Forum on Investment and Finance in China’s Forestry Sector, September 2004, Beijing, China. Available [Online] www.cifor.cgiar.org/publications/pdf_files/research/governance/ RogerWright_HawkinsWright_BeijingSept04.pdf > [03March2010].
2. Parthasarathy, V.R., TAPPI Pulping Conf., TAPPI PRESS, Atlanta, GA, USA, 1997, p. 739.
3. Hart, P.W., TAPPI J. 10(7): 37(2011).10.1007/978-94-6091-603-8_3 ↗
4. Hart, P.W. and Connell, D., TAPPI J. 5(4): 23(2006).10.1111/j.1467-8322.2006.00463.x ↗
5. Chlor-Alkali Market Report, Chemical Markets Association (CMAI), Houston, TX, USA, No. 152, January 31, 2007.
6. Brogdon, B.N., TAPPI J. 9(8): 27(2010).10.1201/b10323-4 ↗
7. Brogdon, B.N., TAPPI J. 9(9): 47(2010).10.32964/TJ9.9.47 ↗
8. McDonough, T.J., Uno, S., Rudie, A.W., et al., TAPPI J. 7(1): 4(2008).10.32964/TJ7.1.4 ↗
9. McDonough, T.J., Uno, S., Rudie, A.W., et al., TAPPI J. 8(8): 10(2009).10.32964/TJ8.8.10 ↗
10. McDonough, T.J., Rawat, N., and Krishnagopalan, G.A., Appita J. 57(5): 381(2004).10.2307/4151439 ↗
11. Keski-Säntti, J., “Neural networks in the production optimization of a kraft pulp bleach plant,” Ph.D. dissertation, University of Oulu, Oulu, Finland, 2007.
12. Brogdon, B.N., in The Bleaching of Pulp (A.W. Rudie and P.W. Hart, Eds.) 5th edn., TAPPI PRESS, Atlanta, 2012, Chap. 12.
13. Reeve, D.W. and Weishar, K.M., TAPPI J. 82(10): 136(1999).
14. Basta, J., Andersson, L., Blom, C., et al., TAPPI Pulping Conf., TAPPI PRESS, Atlanta, 1992, p. 547.
15. Süss, H.U., Schmidt, K., Davies D., et al., Internationale Papierwirtschaft (ipw)–Das Papier 11(5): 40(2006).
16. Ragnar, M., Nord. Pulp Pap. Res. J. 18(2): 162(2003).10.3183/npprj-2003-18-02-p162-167 ↗
17. van Lierop, B., Faubert, M., Sacciadis, G., et al., TAPPI Fall Tech. Conf. Proc., TAPPI PRESS, Atlanta, 2004, Session 18-2.
18. Shackford, L.D., Santos, C.A., Colodette, J.L., et al., TAPPI J. 8(1): 12 (2009).10.32964/TJ8.1.12 ↗
19. Basta, J., Wäne, G., Meuller, L., et al., 28th Pulp Pap. Ann. Mtg., Associação Brasileira Técnica de Celulose e Papel (ABTCP), São Paolo, Brazil, 1995, p. 115.
20. Lachapelle, R., Strunk, W., and Klein, R., Tappi J. 75(7): 181(1992).
21. Elm, D., Choma, P., Strunk, W., et al., Proc. 79th Annu. Meet., Tech. Sec., CPPA, Canadian Pulp and Paper Association, Montreal, 1994, p. B183.
22. Mathur, I. and Dawe, R., TAPPI J. 82(3): 157(1999).
23. Brogdon, B.N., TAPPI J. 12(2): 17(2013).10.32964/TJ12.2.17 ↗
24. Parthasarathy, V., Rudie, G. Detty, A., et al., TAPPI Pulp. Conf., TAPPI PRESS, Atlanta, 1993, p. 933.
25. Parthasarathy, V., Detty, A., and Steffy, J. “Elemental chlorine free and low chlorine bleaching of Chillicothe hardwood – extending delignification and bleaching of hardwood pulps,” Internal Report No. 16,136, Mead Central Research, Chillicothe, OH, 1993.
26. Reeve, D.W., in Pulp and Paper Manufacture, Alkaline Pulping, (T.M. Grace, B. Leopold, E.W. Malcolm, et al., Eds.) Vol. 5, Joint Textbook Committee of the Paper Industry, TAPPI, CPPA, Atlanta and Montreal, 1989, pp. 391-424.10.1002/cjce.5450660625 ↗
27. Pryke, D.C., Farley, B., and Wolf, A., TAPPI Pulp. Conf., TAPPI PRESS, Atlanta, 1995, p. 251.
28. Brogdon, B.N., personal files, July 2013.
29. Sjoblöm, K. and Hardmeier, P., Pulp Pap. Can. 91(11): T378(1990).
30. Ragnar, M. and Dahllöf, H., Nord. Pulp Pap. Res. J. 17(3): 228(2002).10.3183/npprj-2002-17-03-p228-233 ↗
31. Gellerstedt, G., in Lignin and Lignans: Advances in Chemistry (C. Heitner, D.R. Dimmel, and J.A. Schmidt, Eds.), CRC Press/Taylor & Francis Group, New York, 2010, pp. 393–438.10.1201/EBK1574444865-c11 ↗
32. Brogdon, B., TAPPI Eng., Pulping Environ. Conf., TAPPI PRESS, Atlanta, 2009, Session 18-2.
33. Colodette, J.L. and Henricson, K.O., in The Bleaching of Pulp (P.W. Hart and A.W. Rudie, Eds.) 5th edn., TAPPI PRESS, Atlanta, 2012, Chap. 5.
34. Chakar, F.S., Allison, L., Ragauskas, A.J., et al., TAPPI J. 83(11): 62(2000).