Cyclone separator, used as the biogas pretreatment equipment, was taken as the research object in this study. In order to improve the separation rate of biogas impurity particles, the influence of six different structural parameters of the cyclone separator on the particle separation rate was analyzed by a single factor control method. It was found that the gas inlet rectangular section size had significant influence on the particle separation rate, followed by the diameter of the gas outlet duct. However, the height of the cylinder and cone, the insertion depth of gas outlet duct, and the diameter of the down-comer tube had limited effects on the particle separation rate. The best improvement scheme was that the diameter of the gas outlet duct was 138 mm, and the gas inlet rectangular section was 130 × 56 mm². The particle separation rate of 10 μm and above was greater than 98%, and the pressure drop at this time was 2.213 kPa.

本研究以旋风分离器作为沼气预处理设备为研究对象。为了提高沼气杂质颗粒的分离率，采用单因素控制方法分析了旋风分离器的六个不同结构参数对颗粒分离率的影响。发现进气矩形截面的尺寸对颗粒分离率有显着影响，其次是排气通道的直径。然而，圆柱和圆锥的高度，出气管的插入深度以及下导管的直径对颗粒分离率的影响有限。最佳的改进方案是出气管直径为138 mm，进气矩形截面为130×56 mm ²。10μm以上的粒子分离率大于98％，此时的压降为2.213kPa。