摘要
为解决使用溶剂萃取法处理油基钻屑的过程中,有机溶剂作为萃取剂存在闪点低、易挥发、回用难等问题。对比正辛烷采用具有安全性高、萃取能力强的咪唑类离子液体协同正辛烷来处理油基钻屑。通过对比可知,溴化1-羟乙基-3-十八烷基咪唑离子液体与正辛烷质量比为1︰10,钻屑与萃取剂质量比为1︰4,萃取40 min,6 000 r/min离心5 min,萃取率可达到99.12%,钻屑中含油率从23.30%降至0.26%,萃取剂闭口闪点从13℃提高至39℃,危险等级从Ⅰ级降低至Ⅱ级,沸点从125.6℃降低至101~113℃,饱和蒸气压从1.33 kPa降低至0.87 kPa,极大地提高了正辛烷的安全性能。
In order to solve the problems of low flash point, easy volatilization and difficulty in recycling when organic solvents are used as extractants in the process of using solvent extraction to treat oil-based drilling cuttings. Compared with n-octane, the imidazole-based ionic liquid with high safety and strong extraction ability is used in conjunction with n-octane to treat oil-based drilling cuttings. By comparison, it can be seen that the mass ratio of 1-hydroxyethyl-3-octadecylimidazolium bromide ionic liquid to n-octane is 1:10, the mass ratio of drilling cuttings to extraction agent is 1:4, and the extraction time is 40 min and 6 000 Centrifugation at r/min for 5 min, the extraction rate can reach 99.12 %, the oil content in drill cuttings is reduced from 23.30 % to 0.26 %, the closed flash point of the extractant is increased from 13 ℃ to 39 ℃, the hazard level is reduced from I to II, the boiling point From 125.6 ℃ to 101~113 ℃, the saturated vapor pressure decreased from 1.33 k Pa to 0.87 kPa, which greatly improved the safety performance of n-octane.
作者
林丽丽
张太亮
赵寒枫
杨龙
Lin Lili;Zhang Tailiang;Zhao Hanfeng;Yang Long(School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China)
出处
《广东化工》
CAS
2022年第7期16-18,共3页
Guangdong Chemical Industry
基金
四川省科技计划项目(重点研发项目)(四川省应用基础研究基金)。
关键词
咪唑类离子液体
油基钻屑
溶剂萃取
正辛烷
安全评价
imidazole ionic liquid1
oil-based drilling cuttings
solvent extraction
n-octane
safety evaluation
