Low-velocity pneumatic conveying in horizontal pipe for coarse particles and fine powders--颗粒学报PARTICUOLOGY

Tomita, Y., Agarwal, V. K., Asou, H., & Funatsu, K. (2008). Low-velocity pneumatic conveying in horizontal pipe for coarse particles and fine powders. Particuology, 6(5), 316–321. https://doi.org/10.1016/j.partic.2008.03.009

Low-velocity pneumatic conveying in horizontal pipe for coarse particles and fine powders

Yuji Tomita ^a *, Vijay Kumar Agarwal ^b, Hiroyuki Asou ^a, Katsuya Funatsu ^a

a Kyushu Institute of Technology, 1-1 Sensuicho, Tobata, Kitakyushu 804-5500, Japan
b Indian Institute of Technology, Hauz Khas, New Delhi 110016, India

10.1016/j.partic.2008.03.009

Volume 6, Issue 5, October 2008, Pages 316-321

Received 28 December 2007, Accepted 13 March 2008, Available online 3 July 2008.

E-mail: tomita-f@s9.dion.ne.jp

Highlights

Abstract

First, the characteristics of low-velocity conveying of particles having different hardness are experimentally investigated in a horizontal pipeline in terms of flow pattern and pressure drop to show that the slug flow can be classified into two types depending on the settling of particles along the pipeline, and the period is small for slug flow without the settled layer, which is called solitary slug flow. The pressure drop for soft particles is shown to be larger than that for hard particles. Then, experimental results are presented on horizontal fluidized-bed conveying of fine powders to show that air release from the top surface of the conveying channel is an important factor for high mass flow rate of particles.

Graphical abstract

Keywords

Low-velocity conveying; Slug flow; Soft particle; Horizontal fluidized-bed conveying; Fine powder

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