The High Temperature Annular Shear Cell: A modified ring shear tester to measure the flow properties of powders at high temperature
作者： Igino Tomasetta , Diego Barletta , Massimo Poletto
DOI: 10.1016/J.APT.2012.11.007
关键词:
摘要: Abstract Although changes of cohesive behaviour powders is observed at high temperature in several industrial process units, conventional testers and procedures are still not suited for testing powder flow properties temperature. In this work a High Temperature Annular Shear Cell was designed, built set-up order to directly measure the up 500 °C. A control system also developed establish uniform inside sample. Yield loci room 500 °C were measured samples fluid catalytic cracking catalyst (FCC powder), fly ashes, natural corundum, synthetic porous α-alumina glass beads. Experimental evidences did reveal univocal effect tested range. Finally, shear tests on beads mixed with some high-density polyethylene (HDPE) (1% total weight) confirmed that significant increase occurs when liquid bridges form due melting one solid phases.
core.ac.uk
unisa.it参考文章(26)
A.W. Jenike, Gravity flow of bulk solids Bull. Utah Engng Exp. Station. ,vol. 108, ,(1961)
Giovanna Bruni, Paola Lettieri, David Newton, John Yates, The influence of fines size distribution on the behaviour of gas fluidized beds at high temperature Powder Technology. ,vol. 163, pp. 88- 97 ,(2006) , 10.1016/J.POWTEC.2006.01.007
Giovanna Bruni, Diego Barletta, Massimo Poletto, Paola Lettieri, A rheological model for the flowability of aerated fine powders Chemical Engineering Science. ,vol. 62, pp. 397- 407 ,(2007) , 10.1016/J.CES.2006.08.060
Marcus Ripp, Siegfried Ripperger, Influence of temperature on the flow properties of bulk solids Chemical Engineering Science. ,vol. 65, pp. 4007- 4013 ,(2010) , 10.1016/J.CES.2010.03.046
John P. Hurley, Biplab Mukherjee, Michael D. Mann, Assessment of Filter Dust Characteristics that Cause Filter Failure during Hot-Gas Filtration Energy & Fuels. ,vol. 20, pp. 1629- 1638 ,(2006) , 10.1021/EF050303K
B Formisani, R Girimonte, G Pataro, The influence of operating temperature on the dense phase properties of bubbling fluidized beds of solids Powder Technology. ,vol. 125, pp. 28- 38 ,(2002) , 10.1016/S0032-5910(01)00494-6
B. Formisani, R. Girimonte, L. Mancuso, Analysis of the fluidization process of particle beds at high temperature Chemical Engineering Science. ,vol. 53, pp. 951- 961 ,(1998) , 10.1016/S0009-2509(97)00370-9
Duane H. Smith, George J. Haddad, M. Ferer, Shear Strengths of Heated and Unheated Mixtures of MgSO4 and CaSO4 Powders. Model Pressurized Fluidized Bed Combustion Filter Cakes Energy & Fuels. ,vol. 11, pp. 1006- 1011 ,(1997) , 10.1021/EF970037D
Bernd Zimmerlin, Hans Leibold, Helmut Seifert, Evaluation of the temperature-dependent adhesion characteristics of fly ashes with a HT-rheometer Powder Technology. ,vol. 180, pp. 17- 20 ,(2008) , 10.1016/J.POWTEC.2007.03.014
P. Lettieri, D. Newton, J.G. Yates, Homogeneous bed expansion of FCC catalysts, influence of temperature on the parameters of the Richardson–Zaki equation Powder Technology. ,vol. 123, pp. 221- 231 ,(2002) , 10.1016/S0032-5910(01)00463-6