Numerical simulation study on optimization of ventilation airflow organization of a raw coal bunker

Abstract

For the problem of gas accumulation in the product bunker of a company’s coal processing plant, three different ventilation schemes are proposed. The first one opens rectangular air inlet louvers on the wall of the product bunker and adds fans on the top for exhaust; the second one sets six ventilation windows evenly on the top of the product bunker for natural ventilation; the third one sends air to the interior of the bunker through small holes evenly distributed on the ventilation pipes and opens six exhaust ports on the wall. Finally, the effect of gas accumulation management of the ventilation scheme is simulated and analyzed through numerical simulation. The ventilation scheme is applicable to the gas accumulation management of raw coal bunkers with different coal storage heights, and provides a technical reference for the gas accumulation management of product bunkers in coal processing plants.