【作者】 袁瑞； 刘智； 赵博； 刘硕； 曹东炜； 赵瑞玉；

【Author】 Rui Yuan;Liu zhi;Zhao bo;Liu shuo;Cao dongwei;Zhao ruiyu;State Key Laboratory of Heavy Oil Processing, Key Laboratory of Catalysis, CNPC, China University of Petroleum (Huadong);

【机构】 中国石油大学(华东)重质油国家重点实验室CNPC催化重点实验室；

【摘要】 随着原油重质化、劣质化日趋严重和三次采油技术的应用,原油中金属钙含量不断升高^[1],从而限制了原油的深度加工,造成设备腐蚀、催化剂失活、电脱盐操作系统紊乱等一系列危害^[2]。因此,原油脱钙问题日益受到国内外研究者的关注,并开发了诸多脱钙技术^[3]。其中,螯合脱钙法^[4]是指水溶液中脱钙剂与油水界面电离出的有机钙发生络合反应,形成稳定钙化合物,利用反相萃取的原理实现钙脱除的方法。脱钙剂是国内炼厂脱钙工艺的关键药剂,其脱钙效果直接影响脱钙率的大小。本论文以超高钙稠油为研究对象,将四种优选出的不同组成性质的单一脱钙剂进行复配,研究发现脱钙剂A和B在质量比为2:1复配时,原油中钙的脱除率可达99.89%。脱钙后油样的密度、粘度、盐含量降低,Ca、Fe含量降低,Ni、V含量基本不变,原油酸值有所升高。更多还原

【Abstract】 In recent years, with the application of the tertiary recovery technology, the calcium content in the crude oil become higher and higher.These calciumions contribute to corrosion, heat exchanger fouling, and other processes.The paper used the chelating calcium technology, employing with four different decalcifying agents which mixed and reacted with calcium to removing calcium from crude oil. The study found that the decalcification rate can reach 99.89% when the mass ratio of decalcifying agent A and B is 2:1. After decalcification the density, viscosity, the content of Ca, Fe, salt decreased, and the content of Ni and V remained unchanged, and the acid value was increased.更多还原