Design Mixers to Minimize Effects of Erosion and Corrosion Erosion. (29th March 2012)

• Record Type: Journal Article
• Authors: Fasano, Julian; Janz, Eric E.; Myers, Kevin
• Other Names: Hashimoto Shunsuke Academic Editor.
• Is Part Of: International journal of chemical engineering. Volume 2012(2012)
• Publication Date: 2012-03-29
• Subjects: Chemical engineering -- Periodicals; Chemical engineering; Electronic journals; Periodicals; 660
• DOI: 10.1155/2012/171838
• Languages: English
• ISSNs: 1687-806X

Abstract

Abstract : A thorough review of the major parameters that affect solid-liquid slurry wear on impellers and techniques for minimizing wear is presented. These major parameters include (i) chemical environment, (ii) hardness of solids, (iii) density of solids, (iv) percent solids, (v) shape of solids, (vi) fluid regime (turbulent, transitional, or laminar), (vii) hardness of the mixer's wetted parts, (viii) hydraulic efficiency of the impeller (kinetic energy dissipation rates near the impeller blades), (ix) impact velocity, and (x) impact frequency. Techniques for minimizing the wear on impellers cover the choice of impeller, size and speed of the impeller, alloy selection, and surface coating or coverings. An example is provided as well as an assessment of the approximate life improvement.