Single fiber lignin distributions based on the density gradient column method

Engineering, Pulping and Environmental Conference 2007, TAPPI

Volumn 4, Issue , 2007, Pages 2437-2471

  Boyer, Brian ^a,c   Rudie, Alan ^b  

^a Patent Attorney   (United States)

^b FOREST PRODUCTS LABORATORY   (United States)

^c Intellectual Property Practice Group   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

A-DENSITY; CHEMICAL PENETRATION; COOKING PROCESSES; COOKING TEMPERATURES; DENSITY DISTRIBUTIONS; DENSITY GRADIENT COLUMNS; FIBER DENSITY; KAPPA NUMBERS; LIGNIN CONCENTRATIONS; LOW DENSITY; LOWER DENSITY; MIXED SOLVENTS; MIXING PROCESSES; PINE TREES; PULP FIBERS; PULPING CHEMICALS; SINGLE FIBERS; SMOOTH TRANSITION; STANDARD DEVIATION; WOOD CHIPS;

ALKALINITY; COLUMNS (STRUCTURAL); CONCENTRATION (PROCESS); FIBER OPTICS; FIBERS; GRADIENT METHODS; IMAGE SEGMENTATION; INDICATORS (CHEMICAL); KRAFT PROCESS; LIGNIN; MIXING; NORMAL DISTRIBUTION; PULP; SOLVENTS; STANDARDS; TECHNOLOGY; WOOD; WOOD CHEMICALS; WOOD PRODUCTS;

PULP COOKING;

ALKALINITY; COLUMNS; CONCENTRATION; FIBER OPTICS; HEATING; LIGNINS; PULPS; SOLVENTS; WOOD;

EID: 52249096001     PISSN: None     EISSN: None     Source Type: Conference Proceeding    
DOI: None     Document Type: Conference Paper

References (38)

1. Parthasarathy, V.R., "Is Extended Cooking Necessary for the Closure of Bleach Plant? A Strategic Shift in Pulping and Bleaching," Tappi Pulping Conference Proceedings, 739 (1997).
2. Tikka, P., and Kovasin, K., "Displacement vs. Conventional Batch Kraft Pulping: Delignification Patterns and Pulp Strength Delivery," Paperi ja Puu, 72(8):774 (1990).
3. Gustafson, R.R., Jimenez, G., McKean, W.T., and Chian, D., "The Role of Penetration and Diffusion in Nonuniform Pulping of Softwood Chips," Tappi Journal, 8:163 (1989).
4. Gullichsen, J., Kolehmainen, H., and Sundqvist, H., "On the Nonuniformity of the Kraft Cook," Paperi ja Puu, 74(6):486 (1992).
5. Tikka, P., MacLeod, J.M., and Kovasin, K., "Chemical and Physical Performance of Kraft Cooking: The Impact of Process Alternatives," Tappi Journal, 74(1):137 (1991).
6. Tichy, J., and Procter, A.R., Measurement and Significance of Lignin Content Uniformity in Unbleached Kraft Pulps," Svensk-Papperstidning, 84(15):R116 (1981).
7. Atkinson, E.S., and Partridge, H. De V., "Effects of Mixing and Degree of Chlorination on Quality and Bleaching Costs," Tappi Journal, 49(2):66A (1966).
8. Horng, AJ., Mackie, D.M., and Tichy, J., "Factors Affecting Pulp Quality from Continuous Digesters," Tappi Journal, 70(12):75 (1987).
9. MacLeod, J.M., "Is Unbleached Softwood Kraft Pulp Strongest at 30 Kappa Number?," 76th Annual Meeting, Technical Section. CPPA, A37 (1990).
10. Blume, W.M., "Basket Cooking in Mill Digesters," Tappi Journal, 37(12):145A (1954).
11. MacLeod, J.M., "Basket Cases: Kraft Pulp Strength Variability Within a Batch Digester," Tappi Journal, 73(10):185 (1990).
12. Tikka, P., Tahkanen, H., and Kovasin, K., "Chip Thickness vs. Kraft Pulping Performance: Part I. Experiments by Multiple Hanging Baskets in Batch Digesters," Tappi Pulping Conference Proceedings, 555 (1992).
13. Anderson, D., and Rea, M., "Improving Pulp Uniformity with Triple Hanging Baskets," Spring Conference. CPPA (1990).
14. Knutsson, T., and Stockman, L., "The Effect of Mechanical Treatment during the Final Stages of the Cook on the Beating Properties and Strength of Sulphate Pulp," Tappi Journal, 41(11):704 (1958).
15. Annergren, G.E., Ohrn, O.E., and Rydholm, S.A., "Kraft Pulp Quality from Batch and Continuous Cooking," Svensk-Papperstidning, 66(4): 110 (1963).
16. Jansson, L., Lagergren, S., and Rydholm, S., "Studies on the Interfiber Bonds of Wood: Part III. An Investigation on Hot Stock Pressure Refining of NSSC Pulp," Tappi Journal, 42(8):649 (1959).
17. Kubulnieks, E., Lundqvist, S., and Pettersson, T., "The STFI OPTI-Kappi Analyzer: Applications and Accuracy," Tappi Journal, 70(11):38 (1987).
18. Tikka, P., and Piiroinen, P., "Cooking Liquor Analyzer: A New Tool for Controlling a Continuous Digester," Pulp and Paper Canada, 88(10):T387 (1987).
19. Oster, G., and Yamamoto, M., "Density Gradient Techniques," Chemical Reviews, 63:257 (1963).
20. Tessler, S., Woodberry, N.T., and Mark, H., "Application of the Density-Gradient Tube in Fiber Research," Journal of Polymer Science (Letters to the Editors), 1(5):437 (1946).
21. Stamm, A.J., and Sanders, H. T., "Specific Gravity of the Wood Substance of Loblolly Pine as Affected by Chemical Composition," Tappi Journal, 49(9):397 (1966).
22. Paulson, J.C., "Unbleached Pulp Uniformity in Prehydrolysis-Kraft Pulp from Slash Pine," Svensk-Papperstidning, 74(13-I4):397 (1971).
23. Wandelt, P., and Mroz, W., "A Rapid Method for Measuring Yield in Semichemical Pulping Processes," Tappi Journal, 75(3):203 (1992).
24. Boutelje, J.B., and Johnsson, U., "Ultraviolet Microscope Photometry of Pulp Fibers," Cellulose Chemistry and Technology, 15:53(1980).
25. Liu, Y., Gustafson, R., Callis, J., and McKean, B., "Fluorescence microphotometry in Determining the Lignin Content of Single Pulp Fibers," ISWPC, T2-1 (1997). Robinson, J.K., Gustafson, R.R., Callis, J.B. and Bruckner, C., "Measurement of kappa number variability on the fiber level", Tappi J., 1(10): 3 (2002).
26. Hunt, K., and Harton, J. V., "Determining the Individual Bleaching Response of the Components of a Pulp Mixture," Tappi Journal, 66(10): 103 (1983).
27. Thomson, S.L., and Gustafson, R.R., "Effects of Kappa Variability on Pulp Properties:" Tappi Pulping Conference Proceedings, 445 (1996).
28. Renard, J.J., and Hanson, D.M., U.S. Patent 4,837,446 (June 6, 1989).
29. Marcoccia, G., Laakso, R., and McClain, G., "Lo-Solids pulping: Principles and Applications," Tappi Pulping Conference Proceedings, 915 (1995).
30. Headley, R., "Pulp Cooking Developments Focus on Fiber Yield, Lower Chemical Use," Pulp and Paper, 70(10):49(1996).
31. Chamblee, W., Funk, E., Marcoccia, B., Prough, J.R., and McClain, G., "Lo-level Feed System at the Gulf States Paper Mill in Demopolis, Alabama," Tappi Pulping Conference Proceedings, 451 (1996).
32. Rudic, A., Shakhet, A., Carter, B., and Griffey, J., "A chlorite holopulping method to evaluate strength changes in TMP," IPST technical paper series, 570(4) (1995).
33. Akhtaruzzaman, A.F.M., and Virkola, N.E., "Influence of Chip Dimensions in Kraft Pulping: Part II. Present State and Scope of the Study," Paperi ja Puu, 61(10):629 (1979).
34. Borlew, P.B., and Miller, R.L., "Chip Thickness: A Critical Dimension in Kraft Pulping," Tappi Journal, 53(11):2107 (1970).
35. Akhtaruzzaman, A.F.M., and Virkola, N.E., "Influence of Chip Dimensions in Kraft Pulping: Part VI. Effect on the Viscosity, Fibre Length and Bauer-McNett Classification of Unbleached Pulp; Predictive Mathematical Models," Paperi ja Puu, 62(2):70 (1980).
36. Hartler, N., and Onisko, W. "The Interdependence of Chip Thickness, Cooking Temperature and Screenings in Kraft Cooking of Pine," Svensk Papperstidning, 65(22):905 (1962).
37. Hartler, N., "Penetration and Diffusion Relationship during Sulfate Cooking," Paperi ja Puu, 44(7):365(1962).
38. Gullichsen, J., and Sundqvist, H., "On the Importance of Impregnation and Chip Dimensions on the Homogeneity of Kraft Pulping," Tappi Pulping Conference Proceedings, 27(1995).