PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
2013 | 34 | 4 | 427-434
Tytuł artykułu

BLENDING CHARACTERISTICS OF HIGH-SPEED ROTARY IMPELLERS

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
This paper presents a comparison of the blending efficiency of eight high-speed rotary impellers in a fully baffled cylindrical vessel under the turbulent flow regime of agitated charge. Results of carried out experiments (blending time and impeller power input) confirm that the down pumping axial flow impellers exhibit better blending efficiency than the high-speed rotary impellers with prevailing radial discharge flow. It follows from presented results that, especially for large scale industrial realisations, the axial flow impellers with profiled blades bring maximum energy savings in comparison with the standard impellers with inclined flat blades (pitched blade impellers).
Wydawca
Rocznik
Tom
34
Numer
4
Strony
427-434
Opis fizyczny
Daty
wydano
2013-12-01
online
2014-01-22
Twórcy
autor
  • Department of Process Engineering, Faculty of Mechanical Engineering, Czech Technical University in Prague, Czech Republic
  • TECHMIX, Ltd., Brno, Czech Republic
autor
  • TECHMIX, Ltd., Brno, Czech Republic
  • Department of Process Engineering, Faculty of Mechanical Engineering, Czech Technical University in Prague, Czech Republic
  • Department of Process Engineering, Faculty of Mechanical Engineering, Czech Technical University in Prague, Czech Republic
Bibliografia
  • Beshay K. R., Kratěna J., Fořt I., Brůha O., 2001. Power input of high-speed rotary impellers. Acta Polytechnica, 41, 18-23.
  • Bujalski W., Nienow A.W., Chatwin S., Cooke M., 1987. The dependency on scale of power numbers of Rushton disc turbines. Chem. Eng. Sci., 42, 317-326. DOI: 10.1016/0009-2509(87)85061-3.[Crossref]
  • Cavadas A., Pinho F.T., 2004. Some characteristics of stirred vessel flows of dilute polymers solutions powered by a hyperbolic impeller. Can. J. Chem. Eng. 82, 289-302. DOI: 10.1002/cjce.5450820210. [Crossref]
  • Czech Standard CVS (ČSN). Mixing and Mixing Equipment. 691000, Prague, 1960.
  • Fořt I., Jirout T., 2011. A study on blending characteristics of axial flow impellers. Chem. Proc. Eng., 32 (4), 311-319. DOI: 10.2478/v10176-011-0025-3.[Crossref]
  • Fořt I., Jirout T., Rieger F., Allner R., Sperling R., 2001. Study of the blending efficiency of pitched blade impellers. Acta Polytechnica, 41, 7-13.
  • Grenville R.K., Nienow A.W., 2003. Blending in miscible liquids, In: Paul E.L., Otiemo-Obeng V.A., Kresta S.M. (Eds.), Industrial mixing. Science and practice. Wiley Interscience, New York.
  • Khang S.J., Levenspiel O., 1976. New scale-up and design criteria for stirrer agitated batch mixing vessel. Chem. Eng. Sci., 31, 569-577. DOI: 10.1016/0009-2509(76)80020-6.[Crossref]
  • Kramers H., Baars G.M., Knoll W.H., 1953. A comparative study on the rate of mixing in stirred tanks. Chem. Eng. Sci., 2, 35-42. DOI: 10.1016/0009-2509(53)80006-0.[Crossref]
  • Medek J., 1980. Power characteristics of agitators with flat inclined blades. Int. Chem. Eng., 20(4), 664-672.
  • Rieger F., Jirout T., Ceres D., Mazoch J., 2011. Homogenization and suspension efficiency of hydrofoil impeller TX445. The 38th Slovak Iternational Conference on Chemical Engineering, Tatranské Matliare, Slovakia, May 23-27, 2011.
  • Rieger F., Jirout T., Ceres D., Seichter P., 2011a. Homogenization and suspension efficiency of hydrofoil impeller TX335. The 12th Polish Conference on Mixing., Międzyzdroje, Poland, 6-9 June 2011.
  • Rieger F., Seichter P., Kuncewicz C., Ceres D., 2011b. Mixing of suspensions by pitched blade impellers. Inz. Aparat. Chem., 50, 7-8 (in Polish).
  • Rieger F., Jirout T., Ceres D., Pešl L., 2012. Homogenization and suspension efficiency of hydrofoil impeller TX 535. The 20th International Congress of Chemical and Process Engineering CHISA 2012. Prague, Czech Republic, 25-29 August 2012.
  • Seichter P., Pešl L., 2005. Design of rotary impellers- science or art? CHEMagazin, 15, 8-11 (in Czech).
  • Tatterson G. B., 1991. Fluid mixing and gas dispersion in agitated tanks. McGraw-Hill, New York, 121-215. www. invent-uv.de/hyperclassic-mixer.2
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_cpe-2013-0035
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.