Model and optimal operational windows for hydrodynamic fiber fractionation
Source abstract
Abstract
Abstract Based on fitted experimental data, an empirical fractionation model for mini-channel hydrodynamic fiber fractionation (miniFrac) is presented. This model, combined with an optimization procedure, is then used as a design tool to synergize competing fractionation performance characteristics, i. e., product quality, product yield and energy demand. Based on this model, miniFrac is compared to state-of-the-art fiber fractionation technology with respect to (i) long fiber-short fiber fractionation and (ii) fines-fiber fractionation. In terms of fines-fiber fractionation, miniFrac is outperformed by typical micro-hole pressure screening regarding the purity of fines fraction. However, a comparison with a slotted (slot width of 0.2 mm) and a smooth-holed pressure screen (hole diameter of 0.8 mm) shows, that miniFrac is capable of outperforming both systems regarding product quality and energy demand at a comparable product yield. If, in the case of fines-fiber fractionation, reject purity (i. e., fines exclusion) is more important than fines purity (i. e., long fiber remain in the reject), miniFrac is an interesting tool with some key advantages over pressure screens.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Microfluidic and Bio-sensing Technologies · Electrohydrodynamics and Fluid Dynamics · Electrowetting and Microfluidic Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Process and Particle Engineering , Graz University of Technology , Graz , Austria
References (43)
Show source-provided references
1. Asikainen, S., Fuhrmann, A., Ranua, M., Robertsén, L. (2010a) Effect of birch kraft pulp primary fines on bleaching and sheet properties. BioResources 5(4):2173–2183.10.15376/biores.5.4.2173-2183 ↗
2. Asikainen, S., Fuhrmann, A., Robertsen, L. (2010b) Birch pulp fractions for fine paper and board. Nord. Pulp Pap. Res. J. 25(3):269–276.10.3183/npprj-2010-25-03-p269-276 ↗
3. Bjärestrand, A., Vomhoff, H. (2016) Upgrading recycled pulp quality by fractionation and selective refining. Int. Paperworld IPW 12:40–44.
4. Bäckström, M., Bränvall, E. (1999) Effect of primary fines on cooking and TCF-bleaching. Nord. Pulp Pap. Res. J. 14(3):209–213.10.3183/npprj-1999-14-03-p209-213 ↗
5. Chen, H., Park, A., Heitmann, J.A., Hubbe, M.A. (2009) Importance of cellulosic fines relative to the dewatering rates of fiber suspensions. Ind. Eng. Chem. Res. 48(20):9106–9112.10.1021/ie9006613 ↗
6. Delfel, S., Olson, J.A., Martinez, D.M., Regairaz, A., Ollivier-Gooch, C.F., Huovinen, A. (2011) Influence of cylinder design and other factors on capacity and power consumption in a pressure screen. Appita J. 64(1):55–61.
7. Duffy, G.G., Abdullah, L. (2003) Fibre suspension flow in small diameter pipes. Appita J. 56(4):290–295.
8. Duffy, G.G., Ramachandra, S. (2005) Validation of flow mechanisms of fibre suspensions in small diameter pipes. Appita J. 58(5):374–377.
9. El-Sharkawy, K., Koskenhely, K., Paulapuro, H. (2008) The fractionation and refining of eucalyptus kraft pulps. Nord. Pulp Pap. Res. J. 23(2):172–180.10.3183/npprj-2008-23-02-p172-180 ↗
10. Ferluc, A., Lanouette, R., Bousquet, J.P., Bussiere, S. (2010) Optimum refining of TMP pulp by fractionation after the first refining stage. Appita J. 63(4):308–314.
11. Gooding, R., Olson, J., Roberts, N. (2004) Parameters for assessing fibre fractionation and their application to screen rotor effects. Tappi J. 3:3.
12. Huber, P., Kumar, S., Carré, B., Fabry, B. (2016) Preliminary investigation on the potential of fractionation for stratified forming: Application to maximising bending stiffness. Nord. Pulp Pap. Res. J. 31(2):225–231.10.3183/npprj-2016-31-02-p225-231 ↗
13. Karnis, A. (1997) Pulp fractionation by fibre characteristics. Pap. Ja Puu – Paper Timber.
14. Koskenhely, K., Paulapuro, H., Ämmälä, A., Jokinen, H. (2005) Effect of refining intensity on pressure screen fractionated softwood kraft. Nord. Pulp Pap. Res. J. 20(02):169–175.10.3183/npprj-2005-20-02-p169-175 ↗
15. Kraschowetz, H., Hertl, E., Aregger, H.J. (2008) Fractionation in DIP-lines – A further step in waste paper recycling. In: Appita Annu. Conf. Exhib. vol. 62. pp. 177–183.
16. Kumar, S., Amand, F.J.S., Passas, R., Fabry, B., Leturcq, A., Carré, B., Vaulot, F. (2014) Micro-hole pressure screening and hydrocyclone fractionation applied to mechanical pulps for fractions generation. Int. Mech. Pulping Conf. IMPC 2014, part PulPaper 2014 Conf.
17. Lemrini, M.M., Lanouette, R., Michaud, G. (2016a) Interstage fractionation and low consistency refining for TMP. Part 1: Energy consumption and pulp properties. Appita J. 69(1):74–80.
18. Lemrini, M.M., Lanouette, R., Michaud, G. (2016b) Interstage fractionation and low consistency refining for TMP. Part 2: Fibre development. Appita J. 69(2):135–141.
19. Lin, Y., Lanouette, R. (2012) Optimization of selective refining of sulphonated long fibres from jack pine: fibre characteristics. J. Sci. Technol. For. Prod. Process. 2(3).
20. Mayr, M., Eckhart, R., Winter, H., Bauer, W. (2017) A novel approach to determining the contribution of the fiber and fines fraction to the water retention value (WRV) of chemical and mechanical pulps. Cellulose 24(7):3029–3036.10.1007/s10570-017-1298-6 ↗
21. Müller, T.M., Altherr, L.C., Ahola, M., Schabel, S., Pelz, P.F. (2018) Multi-criteria optimization of pressure screen systems in paper recycling – balancing quality, yield, energy consumption and system complexity. In: EngOpt 2018 Proc. 6th Int. Conf. Eng. Optim. pp. 1216–1228.10.1007/978-3-319-97773-7_105 ↗
22. Odabas, N., Henniges, U., Potthast, A., Rosenau, T. (2016) Cellulosic fines: Properties and effects. Prog. Mater. Sci. 83:574–594.10.1016/j.pmatsci.2016.07.006 ↗
23. Olson, J., Roberts, N., Allison, B., Gooding, R.W. (1998) Fibre length fractionation caused by pulp screening. J. Pulp Pap. Sci. 24(2):393–397.
24. Olson, J.A. (2001) Fibre length fractionation caused by pulp screening, slotted screen plates. J. Pulp Pap. Sci. 27(8):255–261.
25. Olson, J.A., Allison, B., Roberts, N. (2000) Fiber length fractionation caused by pulp screening. Smooth-hole screen plates. J. Pulp Pap. Sci. 26(1):12–16.
26. Olson, J.A., Turcotte, S., Gooding, R.W. (2004) Determination of power requirements for solid core pulp screen rotors. Nord. Pulp Pap. Res. J. 19(2):213–217.10.3183/npprj-2004-19-02-p213-217 ↗
27. Qazi, S.J.S., Mohamad, M., Olson, J.A., Martinez, D.M. (2015) Multistage fiber fractionation of softwood chemical pulp through smooth-hole screen cylinders and its effects on paper properties. Tappi J. 14(4):259–267.10.32964/TJ14.4.259 ↗
28. Redlinger-Pohn, J.D., Bauer, W., Radl, S. (2017a) Fractionation of fibre pulp in a hydrodynamic fractionation device: influence of Reynolds number and accept flow rate. In: Trans. 16th Fundam. Res. Symp., Oxford, Sept. 2017. pp. 209–228.10.15376/frc.2017.1.209 ↗
29. Redlinger-Pohn, J.D., König, J., Radl, S. (2017b) Length-selective separation of cellulose fibres by hydrodynamic fractionation. Chem. Eng. Res. Des. 126:54–66.10.1016/j.cherd.2017.08.001 ↗
30. Rogelj, J., McCollum, D.L., Reisinger, A., Meinshausen, M., Riahi, K. (2013) Probabilistic cost estimates for climate change mitigation. Nature 493(7430):79–83.10.1038/nature11787 ↗
31. Rois, S. Evaluation of an Industrial Pressure Screen for Fines Separation of Unbleached Pulp Stream, Bachelor Thesis. Graz University of Technology, 2019.
32. Salem, H.J., Gooding, R.W., Martinez, D.M., Olson, J.A. (2014) Experimental study of some factors affecting pulp screen capacity. Nord. Pulp Pap. Res. J. 29(2):218–224.10.3183/npprj-2014-29-02-p218-224 ↗
33. Schaub, G. Characterization of a Novel, Scaled Fibre Fractionator. Graz University of Technology, 2020.
34. Schmid, T., Redlinger-Pohn, J.D., Radl, S. (2019) Length-based hydrodynamic fractionation of highly networked fibers in a mini-channel. Nord. Pulp Pap. Res. J. 34:2.10.1515/npprj-2018-0086 ↗
35. Schmid, T., Zachl, A., Schaub, G., Radl, S. (2020) A scale-up strategy for a mini-channel hydrodynamic fiber fractionator. Chem. Eng. Process.-Process Intensif. 153(May):107965.10.1016/j.cep.2020.107965 ↗
36. Seth, R.S. (2003) The measurement and significance of fines. Pulp Pap. Can. 104(2):41–44.
37. Sirviö, J., Nurminen, I. (2004) Systematic changes in paper properties caused by fines. Pulp Pap. Can. 105(8):39–42.
38. Sun, Y., Lanouette, R., Cloutier, J.-N., Pelletier, É., Épiney, M. (2014) Impact of selective refining combined with inter-stage ozone treatment on thermomechanical pulp. BioResources 9(1):1225–1235.10.15376/biores.9.1.1225-1235 ↗
39. Taipale, T., Österberg, M., Nykänen, A., Ruokolainen, J., Laine, J. (2010) Effect of microfibrillated cellulose and fines on the drainage of kraft pulp suspension and paper strength. Cellulose 17(5):1005–1020.10.1007/s10570-010-9431-9 ↗
40. Tamura, A., Sugaya, S., Yamada, M., Seki, M. (2011) Tilted-branch hydrodynamic filtration for length-dependent sorting of rod-like particles. In: 15th Int. Conf. Miniaturized Syst. Chem. Life Sci. pp. 1343–1345.
41. Vollmer, H., Fredlund, M., Grundström, K.-J. (2001) Characterization of fractionation equipment. In: Ecopapertech Conf. vol. 3. pp. 27–35.
42. Weber, A.P., Legenhausen, K. (2014) Characterization of a classification or separation process. In: Ullmann’s Encycl. Ind. Chem. pp. 1–11.10.1002/14356007.b02_02.pub3 ↗
43. Yamada, M., Seki, M. (2005) Hydrodynamic filtration for on-chip particle concentration and classification utilizing microfluidics. Lab Chip 5(11):1233.10.1039/b509386d ↗