电脱盐装置切水污油预处理技术研究  

Study on pretreatment technology of waste oil from electrical desalting unit

作　　者：曹振兴 申明周 CAO Zhenxing;SHEN Mingzhou(SEG Luoyang R&D Center of Technology,Luoyang 471003,China;SINOPEC Anti-corrosion Research Center of Petrochemical Equipment,Luoyang 471003,China)

机构地区：[1]中石化炼化工程集团洛阳技术研发中心,河南洛阳471003 [2]中石化石油化工设备防腐蚀研究中心,河南洛阳471003

出　　处：《石油化工腐蚀与防护》2024年第3期6-10,共5页Corrosion & Protection In Petrochemical Industry

基　　金：中国石化科技开发项目“炼厂污油资源化处理技术研究”(316071)。

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100μg/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。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 coalescence technology can be used to improve the quality of waste oil and realize re-utilization.Under the conditions of temperature 90℃,coalescence voltage 4000 V,residence time 60 minutes and FC961 demulsifier dosage 100μg/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 enrichment 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.

关 键 词：电脱盐装置 污油 静电 资源化 

分 类 号：TE624.1[石油与天然气工程—油气加工工程]