Experimental Study On Operational Factor Of Fluid And Parameter Of Pipeline Acting On Ultrasonic Antiscale

Pipeline scaling exists everywhere in industrial production, which affects production and .wastes energy, has becoming a prime reason of scrapped pipelines. Chemical process for antiscale and scale removal is with high cost, great intensity of labor and serious pollution. Ultrasonic antiscale has developed in recent years with the new methods explored in order to improve efficiency of antiscale.Ultrasonic antiscale produces the effect of antiscale by using the cavitation, mechanical and heat effects in propagation. The characteristic of ultrasonic antiscale is energy-saving, free-unpicked and free-washed, clean, simple and convenient. At present, ultrasonic antiscale has been generally accepted and applied in industry such as petroleum and electricity. It has becoming a major technique of power ultrasonic and has been used in the living field closely linked to people.The working condition and the equipment impact the effects of ultrasonic antiscale greatly. The lack of comprehensive understanding for flow condition, flow rate, fluid temperature and geometry, caliber of pipeline acting on scaling and antiscale procedures holds the spread and application of ultrasonic antiscale. In this paper, the systematic experiments for scaling of calcium carbonate in circulating water system and ultrasonic antiscale techniques have been done and the physical mechanism is analyzed.In detail, the following work has been done and the responding conclusions are drawn:1. The fluid temperature and flow rate have an effect on scaling process. The higher the temperature is, the more obvious the scaling is. The lower the velocity is, the more obvious the scaling is.2. The caliber of pipeline has an effect on scaling process. When the flow rates are the same, the smaller the caliber is, the more obvious the scaling is. The different calibers have little effect on scaling process when the flux is the same.3. The geometry of pipeline has an effect on scaling process. The scaling when using elbow and reducer is more obvious than straight tube.4. The flow rate has an effect on results of ultrasonic scaling. The sound intensity decreases with flow rate increasing when the power is the same, and the results of antiscal decline.5. The caliber of pipeline has an effect on results of ultrasonic scaling. The smaller the caliber is, the stronger the acoustic absorption is, and the results of antiscal are worse.6. The geometry of pipeline has an effect on results of ultrasonic scaling. The results decline because of the reflection when there are reducer and elbow in ultrasonic propagation.