Author(s)

Noboru Mochizuki¹, Aya Kaide², Takashi Saeki^2*

¹Business Development Department, ISEL Co., Ltd., Osaka, Japan.
²Graduate School of Science and Technology for Innovation, Yamaguchi University, Yamaguchi, Japan.

We propose a convenient way of evaluating the mixing performance of static mixers used for round pipe by conducting flow visualization experiments under the turbulent region and using water as the main stream. A fluorescent pigment, glycerin, two carboxymethyl cellulose solutions, and rapeseed oil were each injected upstream of the mixer. Three static mixer conditions were tested: 1) no static mixer; 2) a Kenics-type static mixer; and 3) a multi-stacked elements (MSE) static mixer. The mixing trend downstream of the mixer in each condition and with each injection fluid was monitored using a laser and high-speed video camera system to obtain cross-sectional images. We propose suitable indexes based on the images obtained for quantitative evaluations of the mixing characteristics of static mixers.

Line Mixer, Stacked Elements, Pigment, Mixing Performance, Visualization Experiment

Mochizuki, N. , Kaide, A. and Saeki, T. (2018) Quantitative Evaluation of Mixing Characteristics of Static Mixers by Visualization Experiments. Journal of Flow Control, Measurement & Visualization, 6, 27-38. doi: 10.4236/jfcmv.2018.61003.