PL EN


Preferences help
enabled [disable] Abstract
Number of results
2013 | 34 | 4 | 427-434
Article title

BLENDING CHARACTERISTICS OF HIGH-SPEED ROTARY IMPELLERS

Content
Title variants
Languages of publication
EN
Abstracts
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).
Publisher
Year
Volume
34
Issue
4
Pages
427-434
Physical description
Dates
published
1 - 12 - 2013
online
22 - 01 - 2014
References
  • 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
Document Type
Publication order reference
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_cpe-2013-0035
Identifiers
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.