Study of coal dust pollution law of parallel belt conveyor running system in coal processing plant

Abstract

In order to solve the dust pollution problem of the parallel belt conveyor running system of the coal processing plant, a numerical model of the parallel belt conveyor running system of Huangyuchuan coal processing plant was established using the k-ε turbulence model and COMSOL software to calculate the distribution law of its wind flow, analyze the influence of the induced airflow and corridor wind speed on its wind flow field, and determine the mechanism of wind flow influence on dust pollution of the parallel belt conveyor running system of the coal processing plant. The study shows that the corridor wind speed directly determines the flow velocity of the system, the larger the corridor wind speed, the greater the velocity of the whole system; the size of the induced airflow determines whether the wind flow field is a single vortex field, a double vortex field or a vortex-free field. Targeted solutions are proposed to reduce the problem of serious dust pollution caused by the generation of vortex, and the targeted wet dust reduction solution is designed and installed in Huangyuchuan coal processing plant, where the dust reduction efficiency of both the full dust and the respirable dust in the workshop has reached over 90%.

Keywords

• coal preparation plant
• parallel belt conveyor system
• dust reduction scheme
• air flow distribution
• dust pollution