摘要
采用复合脱酸剂,对北疆高酸原油进行了脱酸研究。对脱酸剂组成进行详细的优选,考察了反应温度、反应时间、脱酸剂加量对脱酸率的影响,考察了超声辐照对脱酸的强化作用。实验结果表明:采用环己胺为中和剂、乙二醇为萃取溶剂组成的脱酸剂对高酸原油具有较高的脱酸率,且没有乳化现象。超声辐照对脱酸过程具有强化作用,使反应时间显著缩短;含环己胺质量分数为30%的乙二醇具有良好的脱酸性能,加量为15%wt时,脱酸率达到86.5%,采用减压蒸馏回收环烷酸,乙二醇回收率为99.3%,环己胺回收率为96.6%,回收的环烷酸纯度较高,酸值达到167 mg KOH/g。
A compounded deacidificant was used for deacidification of BeiJiang crude oil,and its formulation was optimized in detail.Effects of reaction temperature,time and the deacidificant dosage were examined.Acceleration by using ultrasonic irritation in the deacidification process was investigated.Our results revealed the deacidificant composed of cyclohexylamine as neutralization agent and ethylene glycol as extraction solvent not only provided an excellent deacidificcation extent,but also no emulsification problem appeared.Ultrasonic wave played an accerleration role,resulting in a shorter reaction time.30%wt of cyclohexylamine-containing ethylene glycol solution has the best performance.Deacidification extent reached 86.5% at a deacidificant and oil weight ratio of 15%.Naphthenic acids and the deacidificant components were recovered by using vacuum distillation.The recovery ratio for the deacidificant components were 99.3% for ethylene glycol and 96.6% for cyclohexylamine respectively.The purity of recovered naphthenic acids was rather high,reaching a acid value of 167 mg KOH/g.
出处
《广东化工》
CAS
2011年第3期77-78,91,共3页
Guangdong Chemical Industry
关键词
原油
脱酸
超声
环己胺
乙二醇
crude oil
deacidification
ultrasound
cyclohexylamine
ethylene glycol
