A simple color concentration measurement technique for powders

被引：20

作者：

Emady, Heather N. ^{[1
,2
]}

Wittman, Maya ^{[2
]}

Koynov, Sara ^{[2
]}

Borghard, William G. ^{[2
]}

Muzzio, Fernando J. ^{[2
]}

Glasser, Benjamin J. ^{[2
]}

Cuitino, Alberto M. ^{[3
]}

机构：

[1] Arizona State Univ, Sch Engn Matter Transport & Energy, Tempe, AZ 85287 USA

[2] Rutgers State Univ, Dept Chem & Biochem Engn, Piscataway, NJ 08854 USA

[3] Rutgers State Univ, Dept Mech & Aerosp Engn, Piscataway, NJ 08854 USA

来源：

POWDER TECHNOLOGY | 2015年 / 286卷

关键词：

Spectrophotometer; Tracer; Mixing; Color; Powder; Calibration; RESIDENCE TIME DISTRIBUTION; AXIAL-DISPERSION; MIXTURES; QUALITY; FOOD; FLOW; RTD;

D O I：

10.1016/j.powtec.2015.07.050

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Looking for a way to measure residence time distributions of an 80 micron fluidized cracking catalyst (FCC) powder, a simple measurement technique was discovered that quantifies tracer color concentration. Using a color spectrophotometer that measures percent reflectance as a function of wavelength, a calibration curve can be constructed for standard mixtures of dyed and un-dyed powder. This calibration curve can then be used to determine the color concentration of an unknown sample by measuring its reflectance. The effects of operating parameters such as dye strength, aperture size, surface roughness, sample volume and depth, and continuous flow were all evaluated. This spectrophotometric technique was found to be a quick and simple way to measure colored mixture concentrations. In addition to being ideal for residence time distribution applications, it has the potential to easily quantify mixing in any unit operation, batch or continuous. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：392 / 400

页数：9

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