摘要
为减轻炼油企业污油库存压力,实现污油资源的最大化利用,以电脱盐切水为研究对象,通过分析污油性质和优化静电聚结工艺参数,研究了静电聚结技术在提升污油脱水除盐品质方面的作用.研究结果表明:(1)静电聚结技术可用于污油的品质提升和资源化利用,在温度90 ℃,聚结电压4000 V,电场停留时间60 min,破乳剂FC961用量100 μg/g的工艺条件下,污油脱后水质量分数可降至0.18％,盐质量浓度可降至11.87 mg/L;(2)酰胺类、醚类乳化剂的存在或富集是造成电脱盐污油乳化的主要原因;(3)与原油相比,污油体系的高黏度在很大程度上阻碍了油水分离的效果.
Abstract
For alleviating the inventory pressure of waste oil in refineries and maximizing the utilization of waste oil resources,the effect of electrostatic coalescence technology on dehydration and desalting of the waste oil was studied by analyzing the nature of the waste oil and optimizing the process parameters of electrostatic coalescence.The results showed that:(1)electrostatic coales-cence technology can be used to improve the quality of waste oil and realize re-utilization.Under the conditions of temperature 90 ℃,coalescence voltage 4 000 V,residence time 60 minutes and FC961 demulsifier dosage 100 μg/g,the mass fraction of water in the waste oil was reduced to 0.18％and the salt content was decreased to 11.87 mgNaCl/L;(2)the presence or en-richment of amides and ethers emulsifiers was the main reason for emulsification of the waste oil from electrical desalting unit;(3)compared with crude oil,the high viscosity of waste oil hindered the separation of oil and water to a great extent.
维普
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