The Experimental Study Of Coalescence And Vacuum Dewatering Of Oil

Petroleum is served as blood of industry. There are fuel oil, hydraulic oiland lubricants existing in the industrial and agricultural production and dailylife as the most common oil. These petroleum products will be contaminatedby pollutant during the production, storage and use inevitably, such as water.If the water content is too high, it will have serious negative impacts on thephysical and chemical properties and performance of the oil. Therefore, it isnecessary to control the water content in oil strictly.There exist many dehydration methods, fiber-bed coalescing dehydrationhas been widely applied in the field of oil-water separation, because of itssimple device structure, processing capacity, high dehydration efficiency, easyoperation and maintenance and other advantages. Meanwhile, vacuumdewatering can not only get rid of the free and emulsified water in oil, but alsoremove the dissolved water of the oil, and thus is used commonly in thoseoccasions that water content in the oil is required to be very low.However, the domestic and international study on the coalescence mechanism is still not deep enough currently, not yet formed a mature theory.This article discusses the mechanism of coalescence dehydration throughreading a large volume of relevant literatures, and concludes that externalfactors influencing the coalescence dehydration effect of the fiber filter,mainly such as the temperature, flow rate and initial water content. At thesame time, the text points out that the main factors affecting the vacuumdewatering effect through analysis of the vacuum dehydration mechanism,such as the temperature, vacuum degree and flow, etc. Based on these factors,this thesis develops a set of oil-water separation test device about fibercoalescence and vacuum dehydration, in order to verify that these parameterswhich have influence on the coalescence and vacuum dewatering effect.With the rapid development of science and technology, requirements ofthe oil quality become more stringent in various industrial fields. This articlecarries out some pilot studies to find out the influence of the dehydrationeffect from those external factors, in order to provide a fundamental designbasis for developing oil-water separation equipments of better performance,higher efficiency, wider range of application. Purifying the oil polluted bywater to be recycled, has certain economic and social benefits to alleviate thescarcity of resources and environmental pressure.