劣质原油破乳脱钙优化研究  

The optimization research of the demulsification and decalcification of heavy crude oil

作　　者：王慧 邓益强 李文 程丽华 潘奇 王丽 WANG Hui;DENG Yi-qiang;LI Wen;CHENG Li-hua;PAN Qi;WANG Li(College of Chemical Engineering,Guangdong University of Petrochemical Technology,Maoming 525000,China;College of Chemistry & Chemical Engineering,China University of Petroleum(East China),Qingdao 266555,China)

机构地区：[1]广东石油化工学院化学工程学院,广东茂名525000 [2]中国石油大学(华东)化学工程学院,山东青岛266555

出　　处：《应用化工》2019年第8期1893-1896,共4页Applied Chemical Industry

基　　金：广东省自然科学基金(2018A0303070003);茂名市科技计划项目(2017293);广东石油化工学院科研基金项目(2017rc06)

摘　　要：安哥拉帕斯佛罗原油采用电脱盐试验仪模拟炼油厂常减压装置电脱盐过程考察破乳效果,筛选效果优良的破乳剂和脱钙剂。结果表明:①乳状液最佳的破乳脱水条件为:混合强度为2500r/min、pH=6.5时,90℃下恒温15min,NS-885破乳剂用量为50mg/L时,具有89.3%的最佳脱水率;②脱钙剂的脱钙效率为:TG2脱钙剂>盐酸>EDTA-Na>GE脱钙剂>TG1脱钙剂>硫酸>草酸>冰乙酸>苯甲酸,剂钙比为3.5∶1时,TG2脱钙剂的脱钙率高达89.8%。The demulsifers and decalcifying agents with good quality are obtained for the Pazflor Angola crude.Using YS-3 electric-static desalting apparatus,the process parameters of the electric desalination of atmospheric and vacuum distillation unit are explored.The results show that the best demulsification efficiency under the optimum parameters conditions of demulsification temperature 90℃with 15 min,pH 6.5 and the mixture strength 2 500 r/min.And the demulsifying agent with the highest dehydration rate 89.3%is the NS-885 demulsifer with the content of 50 mg/L.The calcium removal is TG2>HCl>EDTA-Na>GE>TG1>H 2SO 4>oxalic acid>acetic acid>benzoic acid.The decalcification rate of mixed crude oil is 89.8%using the TG2 decalcifying agent,when the decalcifying agent dosage to calcium in mixed crude oil is 3.5∶1.

关 键 词：劣质原油 电脱盐 破乳剂 脱钙剂 

分 类 号：TQ317[化学工程—高聚物工业] TE862.3[石油与天然气工程—油气储运工程]