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Warianty tytułu
Konferencja
Third International Conference on Engineering Rheology, ICER 2005
Języki publikacji
Abstrakty
In this paper a number of flow experiments in pump flow with aqueous solutions of the polymers are presented. The high-molecular polymers studied were polyacrylamide of the molecular weights of Mv = 104 and 4.4×106 as well as carboxymethylcellulose sodium salt of the average molecular weights of Mw = 9×104; 2.5×105 and 7×105 and the substitution index ID = 0.9. The inlet solutions of the various mass fraction us Î (200; 1,000) ppm were exposed to degradation in a given time (4 weeks statically and dynamically when the flow time through the pump t = 0.5, 12h). The degradation in the closed flow system including pump UPE 25-60B, storage reservoir and tested flow installation, has been studied. It has been shown that the molecular weight of polymer decreases with increase of the exposition time. The pumping effect is stronger when the initial molecular weight of polymer is greater. The decrease of the non-Newtonian properties as well as the significant decrease of the drag reduction effect connected with the polymer time-degradation caused by the flow through pumps, have been observed.
Rocznik
Tom
Strony
85--91
Opis fizyczny
Bibliogr. 10 poz., wykr.
Twórcy
autor
- Division of Chemical Engineering and Equipment, Faculty of Chemical Technology Poznań University of Technology, PL 60-965 Poznań, POLAND
autor
- Division of Chemical Engineering and Equipment, Faculty of Chemical Technology Poznań University of Technology, PL 60-965 Poznań, POLAND
autor
- Division of Chemical Engineering and Equipment, Faculty of Chemical Technology Poznań University of Technology, PL 60-965 Poznań, POLAND
autor
- Division of Chemical Engineering and Equipment, Faculty of Chemical Technology Poznań University of Technology, PL 60-965 Poznań, POLAND
Bibliografia
- [1] Brostow W. (1983): Drag reduction and mechanical degradation in polymer Solutions in flow. - Polymer, voL2^ pp.631-638.
- [2] Brostow W., Ertepinar H. and Singh R. (1990): Flow ofdilute polymer Solutions. Chain conformations and degradaam of drag reducers. - Macromolecules, vol.23, pp.5109-5118.
- [3] Hunston D.L. and Zakin J.L. (1980): Flow-assisted degradation in dilute polystyrene Solutions. - Polym. Eng. Sci, vol.20,No.7, pp.517-523.
- [4] Kim C.A. et al. (1999): Drag reduction and mechanical degradation of poly(ethylene oxide) in seawater. - J. Chem Eng. Japan, vol.32, No.6, pp.803-811.
- [5] Kim C. A. et al. (2000): Mechanical degradation of dilute polymer Solutions under turbulent flow. - Polymer, vol.41, 11-7615.
- [6] Kulicke W.M., Kótter M. and Grahrt H. (1989): Drag reduction phenomenon with special emphasis on heterogeneous zr Solutions. - Adv. Polym. Sci., vol.89, pp.2-68.
- [7] Metzner A. B. and reed J. C. 91955) Flow of non-Newtonian fluids - correlation of the laminar, transition and turbulent regions. - AIChE Journal, vol.l, No.4, pp.434-440.
- [8] Sellin R. H. J., Hoyt J .W. and Scrivener O. (1982): The effect of drag-reducing additives on liąuid flow and their l applications. Part I. Basic aspects. - J. Hydraulic Res., vol.20, No.l, pp.29-68.
- [9] Yu j. F. S., Zakin J.L. and Patterson G.K. (1979): Mechanical degradation of high molecular weight polymers in dilute i. - J. Appl. Polym. Sci., vol.23, pp.2493-2512.
- [10] Zakin J. L. and Hunston D.L. (1978): Effect ofsohent naturę on the mechanical degradation ofhigh polymer Solutions. L Appl. Polym. Sci., vol.22, pp. 1763-1766.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPZ2-0015-0035