In various fields ranging from manufacturing or pharmaceutical industry to agriculture or automotive industry air filters and -dryers filled with porous desiccant media are used for industrial air preparation. It is necessary to increase the mass of particulate material filled into the dryer for improving its efficiency. Practically this means decreasing porosity of the filler media. In order to achieve this, mechanical excitation (ensured by a vibration platform) is commonly used. However, applying outer excitation decreases the efficiency of filling procedure because of the high energy consumption of the vibratory device. To avoid unnecessary energy consumption it is recommended to examine the possibility of filling more particles into the canister without outer excitation. According to this in our present paper the gravitational deposition of particulate materials was investigated from viewpoint of porosity. Main idea of this research was the usage of the so called “snowstorm” filling technique. A conical hopper and under this multiple cylindrical rods were used to reach uniform deposition and high value of particle packing density. Thus efficiency of air preparation units may be increased as it is possible to fill more material into the container without additional energy usage compared to normal gravitational deposition.

在从制造业或制药业到农业或汽车工业的各个领域中，填充有多孔干燥剂介质的空气过滤器和干燥器用于工业空气制备。为了提高其效率，必须增加填充到干燥机中的颗粒材料的质量。实际上，这意味着降低填充介质的孔隙率。为了实现这一点，通常使用机械激励（由振动平台确保）。然而，由于振动装置的高能量消耗，施加外部激励降低了填充过程的效率。为了避免不必要的能耗，建议检查是否有可能在没有外部激励的情况下将更多的粒子填充到碳罐中。据此，从孔隙度的角度研究了颗粒材料的重力沉积。这项研究的主要思想是使用所谓的“暴风雪”填充技术。使用锥形料斗并在此多个圆柱棒下获得均匀的沉积和较高的颗粒堆积密度值。因此，与常规重力沉积相比，由于可以在不增加能量消耗的情况下将更多的材料填充到容器中，因此可以提高空气制备单元的效率。