Mechanisms of solid particle content and particle size distribution affecting the ultrasonic separation process of oil sludge
To elucidate the impact of solid particles on the ultrasonic treatment of oil sludge,experiments were conducted using bottom sludge from an oilfield in North China,mixed with quartz sand of different particle sizes(70～110,200～300,600 mesh)and mass fractions(40％,60％,80％),simulating actual field oil sludge and treated under uniform ultrasonic conditions.Analysis using the Zuwen Qian attenuation coefficient model revealed that the particle size and content significantly affected the attenuation of ultrasonic energy.The most pronounced attenuation of ultrasonic energy occurred when the particle size was 4.2 μm,and the attenuation decreased as the particle size increases.Additionally,the interaction strength between particles and crude oil was a key factor affecting the efficiency of ultrasonic treatment,which was closely related to the particle size and content.The experimental results showed that the stronger the binding capacity of particles to crude oil,the lower the recovery efficiency of crude oil after ultrasonic treatment.Under the same ultrasonic treatment conditions,the crude oil recovery rate after treatment with particles with weaker binding capacity to crude oil was twice that of particles with stronger binding capacity.These findings provide a theoretical basis for the engineering application of ultrasonic oil sludge resource technology.
万方数据
维普
