【摘要】 在常规水力旋流器的圆柱段充气,并改进溢流结构,提出了一种柱段充气旋流器。以柴油-水混合液为介质,在改变充气旋流器进口液体流量、分流比、气/液比和底流压力这4个操作参数时,考察了流量-压力-压降特性与油-水分离效率的变化规律。结果表明,充气与不充气时,充气旋流器的流量-压力-压降特性变化趋势一致。充气旋流器的油-水分离效率随进口液体流量、分流比、气/液比和底流压力这4个操作参数值的增加,呈先增后降的趋势;充气时比不充气时的油-水分离效率要高,表明充气浮选具有强化旋流分离效率的作用。油滴颗粒的分级效率随油滴颗粒的直径变大而增加。根据实验数据建立了分级效率的数学模型,模型预测值与实验值吻合较好。更多还原

【Abstract】 An air-sparged hydrocyclone with a cylinder air sparging section and a novel outflow structure was proposed.The mixture of diesel and water was used as the experimental medium,and the characteristics of the flux-pressure and pressure drop and oil-water separation efficiency were measured under four different operation parameters,namely liquid inlet flux,distributive ratio,gas-liquid flux ratio and underflow pressure.The experimental results showed that the variations of flux-pressure and pressure drop in hydrocyclone with and without air sparging had the same tendencies.The separation efficiency firstly increased and then decreased with the increase of four operation parameters.The separation efficiency of the hydrocyclone at air-sparged condition was higher than that at no air-sparged condition,demonstrating that the air flotation could intensify the swirling separation performance of the hydrocyclone.The classification efficiency of oil particle increased with the increase of oil particle diameter.Based on the experimental data,a mathematical model describing the classification efficiency was established and the model predicted values agreed well with the experimental data.更多还原