Influence of particle attrition on erosive wear of bends in dilute phase pneumatic conveying
TL;DR: In this article, the authors have carried out an extensive experimental plan to study the influence of recirculation of material on the erosion of bends and attrition of particles in conventional pneumatic conveying systems.
About: This article is published in Wear.The article was published on 2021-07-15. It has received 8 citations till now. The article focuses on the topics: Particle & Particle size.
Citations
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TL;DR: In this paper, the authors describe the various erosion mechanisms associated with different types of target materials and factors affecting them, as well as different theoretical and empirical models available for erosion prediction.
37 citations
TL;DR: In this paper , the influence of total pressure inlet distortion on the erosive wear of compressor blades is studied innovatively, and a new parameterization method for wear model based on experiment is proposed.
8 citations
TL;DR: In this article , the particle erosion of liquid-solid-gas multiphase bubble flow in a horizontal-vertical-upward elbow was analyzed using optical microscope, scanning electron microscope (SEM) and white light interference microscope (WLIM).
5 citations
TL;DR: In this article, the particle erosion of liquid-solid-gas multiphase bubble flow in a horizontal-vertical-upward elbow was analyzed using optical microscope, scanning electron microscope (SEM) and white light interference microscope (WLIM).
5 citations
TL;DR: In this article , the authors evaluated the flow of fine powders in the fluidized dense phase, and the performance of the pneumatic conveying system was based on modeling solids friction factor which was used for determining conveying line pressure drop.
Abstract: Abstract The focus of investigations and research has been shifted in the past decade from conveying bulk materials in dilute phase flow at high velocity to dense phase flow at low conveying air velocity. Dense phase flow offers much less operational problems, such as wear and product attrition, and offers low specific power consumption. It, therefore, enhances the life of pneumatic conveying pipelines and associated components. However, the complete phenomenon of the flow mechanism of fine powder in fluidized dense phase pneumatic conveying has not been exactly explored. It necessitates an understanding of the flow behaviors of a fine powder, factors affecting the flow mechanisms, and approaches to model it. The present work describes the evaluation and assessment of the flow of fine powders in the fluidized dense phase. The performance of the pneumatic conveying system was based on modeling solids friction factor which was used for determining conveying line pressure drop. The predicted results provided by these approaches proved to be inaccurate compared to those of data collected from actual plants. Further, the numerical modeling methods to predict pressure drop for small length pipeline, difficulties, and recent progress in gas-solid prediction investigations are discussed as well. Finally, a Bypass dense phase conveying system which has many advantages over the conventional one has been presented.
2 citations
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TL;DR: In this paper, the effects of erodent composition, hardness-strength characteristics and shape on the erosion of AISI 1020 carbon steel were determined at a velocity of 80 m s −1 at two angles of impingement (α = 30° and 90°).
180 citations
TL;DR: In this article, a detailed surface map of erosion depth in a standard elbow (90° bend, with bend radius to pipe diameter ratio equal to 1.5) is presented using measurements taken with a surface profiler.
116 citations
TL;DR: In this paper, the first application of a non-invasive capacitance tomographic technique to monitoring the behaviour of industrial-scale pneumatic conveyors was described, and the results showed that particle breakage rates are inversely related to the solids loading factor.
78 citations
TL;DR: In this paper, the authors evaluated a few experimental test rigs and procedures and then presented extensive experimental investigation with most of the parameters affecting attrition, including material strength, operation parameters and bend structure, and found that air velocity, loading ratio, bend flexibility and number of collisions are the main factors influencing the rate of attrition.
78 citations
TL;DR: In this paper, a continuous flow gas gun was used to examine the characteristics of particle fragmentation and the effect of particle velocity, impact angle, particle size and number of impacts on the percentage of unbroken particles was investigated.
66 citations