添加剂改性对催化裂化油浆静电分离的影响  

The influence of additive modification on electrostatic separation of FCC slurry oil

作　　者：郭爱军[1] 龚黎明 赵娜 陈坤[1] 刘贺 王宗贤[1] 黄金菊 孙梦 袁俊聪 GUO Aijun;GONG Liming;ZHAO Na;CHEN Kun;LIU He;WANG Zongxian;HUANG Jinju;SUN Meng;YUAN Juncong(State Key Laboratory of Heavy Oil Processing,College of Chemical Engineering of China University of Petroleum (East China),Qingdao 266500,Shandong,China)

机构地区：[1]中国石油大学(华东)化学工程学院,重质油国家重点实验室,山东青岛266580

出　　处：《化工进展》2017年第9期3266-3272,共7页Chemical Industry and Engineering Progress

基　　金：中国石油天然气股份有限公司资助项目(PRIKY16066);山东省重点研发计划(2017GGX70108);重质油国家重点实验室自主研究课题(SLKZZ-2017011)

摘　　要：为提高催化裂化油浆的静电分离效果,对一级静电后的油浆经过改性之后再进行二级静电脱固。通过比较4种添加剂加入后的静电脱固效果,发现介电常数较高、导电率较低的添加剂A最优。经过对加入添加剂后静电分离实验条件的优化,确定了添加剂改性时静电分离的最优实验条件。与不进行改性相比,改性后的脱固效率提高了21%,净化油浆催化剂颗粒含量低于10μg/g。对固体颗粒的介电常数进行测定,利用光学显微观察、能谱分析及红外光谱仪对静电前后油浆中剩余固体颗粒的物理状态及物质组成进行了观察,分析发现向油浆中加入添加剂A之后再进行静电分离,可以使净化油浆中的固体颗粒含量减小,介电常数增加,并且添加剂对油浆中的催化剂颗粒作用比较明显。To improve the electrostatic separation of the catalytic cracking slurry oil,the slurry from the first stage electrostatic separation was modified for further electrostatic separation in the second stage.Comparing electrostatic separation efficiencies after the addition of four kinds of additives,it was found that additive A was the most effective solvent,which had higher permittivity and lower conductivity.Through the optimization of electrostatic separation experiment conditions after adding additives,the optimal experimental conditions of the modified electrostatic separation was determined.The second-stage electrostatic separation efficiency was increased by21%compared to the first stage;and the catalyst particles in purified slurry was below10μg/g.the permittivity of solid particles was measured using Energy spectrum analysis and FTIR.The particle sizes and compositions before and after the electrostatic separation were determined.It was found that added additive A in FCC slurry before electrostatic separation could reduce the particle content and increase the permittivity of purified slurry.The effect to catalyst particles in slurry was more noticeable.

关 键 词：静电分离 添加剂改性 脱固效率 介电常数 

分 类 号：TQ626[化学工程—精细化工]