Research on the Pressure Dropin Horizontal Pneumatic Conveying for Large Coal Particles

Daolong Yang,Zhengwei Hu,Yanxiang Wang

doi:10.3390/pr8060650

Abstract

As a type of airtight conveying mode, pneumatic conveying has the advantages of environmental friendliness and conveying without dust overflow. The application of the pneumatic conveying system in the field of coal particle conveying can avoid direct contact between coal particles and the atmosphere, which helps to reduce the concentration of air dust and improve environmental quality in coal production and coal consumption enterprises. In order to predict pressure drop in the pipe during the horizontal pneumatic conveying of large coal particles, the Lagrangian coupling method and DPM (discrete particle model) simulation model was used in this paper. Based on the comparison of the experimental results, the feasibility of the simulation was verified and the pressure drop in the pipe was simulated. The simulation results show that when the flow velocity is small, the simulation results of the DPM model are quite different from that of the experiment. When the flow velocity is large, the large particle horizontal pneumatic conveying behavior predicted by the model is feasible, which can provide a simulation reference for the design of the coal pneumatic conveying system.

Highlights

Coal is an important fossil energy and many countries have strong dependence on coal resources [1].The open-conveying way is the most common conveying way for coal particles
Applying the pneumatic conveying system to the field of coal particle conveying can avoid the direct contact between coal particles and the atmosphere [5]
Taken as an example to antwo example to sensors analyze are the best trend of pressure drop in the theNo.8 pipe experiment during the is pneumatic conveying analyze the trend pressure drop in theofpipe the pneumatic conveying are experiment

Summary

Introduction

Coal is an important fossil energy and many countries have strong dependence on coal resources [1].The open-conveying way is the most common conveying way for coal particles. In the process of mining, unloading, separation and conveying, the pulverized coal and dust escape into the air, causing environmental pollution and serious dust explosion accidents [2]. The coal particles come in direct contact with the atmosphere, which leads to coal dust diffusion, pollution of the surrounding environment, waste of resources and coal dust explosion accidents [3]. How to convey coal cleanly, efficiently and safely has become an urgent environmental problem, one that needs to be solved. It puts forward higher requirements for environmental protection, economy and reliability of coal conveying equipment. It is of great significance to improve the surrounding environment of coal enterprises, avoid safety production accidents and realize the green use of coal resources

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Discussion

Conclusion