1. 1. State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China; 2. 2. Beijing Innovation Polymerization Technology Company, Beijing 100050, China
A new static mixer Cross-over-Disc has been invented to strip off the boundary layer and to make strong radial mixing. The pressure drop of Cross-over-Disc is 12—26 times as large as that of empty pipe with equivalent diameter and length. The mixing performance of Cross-over-Disc with 14 elements has been investigated in the viscosity range of 190—250 Pa?s by decoloration method, and the gray analysis of images shows that mixing inhomogeneity is about 7.5% and 9.4% for the mixing ratio of 5∶1 and 10∶1, respectively. Furthermore, mixing inhomogeneity for a combination of static mixing elements (four from Cross-over-Disc and three pairs from Sulzer-type) can be decreased to 2.1%—3.1% within a reasonable range of pressure drop.
. Combined static mixers for high viscous fluids mixing[J]. Frontiers of Chemical Engineering in China, 2009, 3(1): 93-96.
Zhenhao XI, Weizhen SUN, Ling ZHAO, Zhaoyan LIU. Combined static mixers for high viscous fluids mixing. Front Chem Eng Chin, 2009, 3(1): 93-96.
Hobbs D M, Muzzio F J. Reynolds number effects on laminar mixing in the Kenics static mixer. Chem Eng J , 1998, 70: 93-103
2
Liu Z Y. Patent CN1490065, 2004-04-21
3
Liu C J, Lu H B, Liu H, Yuan X G. Computational fluid dynamic simulation of the hydrodynamics characteristic in a static mixer. Journal of Tianjin University Science and Technology , 2007, 40(6): 677-682
4
Shah N F, Kale D D. Pressure drop for laminar flow of non-Newtonian fluids in static mixers. Chem Eng Sci , 1991, 46: 2159-2161 doi: 10.1016/0009-2509(91)80175-X
5
Hyun S S, Sang P H. A general correlation for pressure drop in a Kenics static mixer. Chem Eng Sci , 2005, 60: 5696-5704 doi: 10.1016/j.ces.2005.04.084
