Skip navigation

Evaluation of particle degradation due to high-speed impacts in a pneumatic handling system

Evaluation of particle degradation due to high-speed impacts in a pneumatic handling system

Deng, Tong ORCID: 0000-0003-4117-4317, Farnish, Richard J. and Bradley, Michael S.A. (2008) Evaluation of particle degradation due to high-speed impacts in a pneumatic handling system. Particulate Science and Technology, 26 (5). pp. 438-450. ISSN 0272-6351 (Print), 1548-0046 (Online) (doi:https://doi.org/10.1080/02726350802367522)

Full text not available from this repository.

Abstract

Particle degradation can be a significant issue in particulate solids handling and processing, particularly in pneumatic conveying systems, in which high-speed impact is usually the main contributory factor leading to changes in particle size distribution (comparing the material to its virgin state). However, other factors may strongly influence particles breakage as well, such as particle concentrations, bend geometry,and hardness of pipe material. Because of such complex influences, it is often very difficult to predict particle degradation accurately and rapidly for industrial processes.

In this article, a general method for evaluating particle degradation due to high-speed impacts is described, in which the breakage properties of particles are quantified using what are known as "breakage matrices". Rather than a pilot-size test facility, a bench-scale degradation tester has been used. Some advantages of using the bench-scale tester are briefly explored. Experimental determination of adipic acid has been carried out for a range of impact velocities in four particle size categories. Subsequently, particle breakage matrices of adipic acid have been established for these impact velocities. The experimental results show that the "breakage matrices" of particles is an effective and easy method for evaluation of particle degradation due to high-speed impacts. The possibility of the "breakage matrices" approach being applied to a pneumatic conveying system is also explored by a
simulation example.

Item Type: Article
Uncontrolled Keywords: breakage matrices, high-speed impacts, particle degradation, pneumatic conveyors
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Faculty / Department / Research Group: Faculty of Engineering & Science > Wolfson Centre for Bulk Solids Handling Technology
Related URLs:
Last Modified: 17 Oct 2016 10:03
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
Selected for GREAT 2019: None
URI: http://gala.gre.ac.uk/id/eprint/2648

Actions (login required)

View Item View Item