超声波在高酸原油酯化脱酸中的应用研究

将超声波技术应用到高酸原油酯化反应脱酸中。以甘油为酯化脱酸剂,研究醇酸摩尔比、反应温度、反应时间、超声功率对多巴高酸原油自催化酯化反应脱酸的影响,并与磁力搅拌作用下的脱酸效果进行对比。结果表明,在醇酸摩尔比为6、反应温度为250℃、反应时间为30min、超声功率为90W的条件下,多巴原油酸值可由4.74mgKOH/g降到0.21mgKOH/g,脱酸率高达95.6%。在反应温度为220℃的条件下,超声处理的脱酸效果优于磁力搅拌,超声处理后的油样性质变化不大。

STUDY ON THE APPLICATION OF ULTRASONIC IN THE ESTERIFICATION DEACIDIFICATION OF HIGH ACID CRUDE OIL

Ultrasonic was applied in the acid removal treatment of high acid crude using glycerol as esterification deacidification agent. The effects of the molar ratio of alcohol to acid, reaction temperature, reaction time and ultrasonic power on the autocatalytic esterification of Duba crude oil were investigated. Results showed that under the optimum conditions of a alcohol/acid molar ratio of 6, a reaction temperature of 250℃, a reaction time of 30 min and an ultrasonic power of 90 W, the acid number of Duba crude oil was reduced to 0.21 mgKOH?g-1 from the original 4.74 mgKOH?g-1 and the acid removal rate reached 95.6%. Comparing with using magnetic stirring, better deacidification results were obtained under ultrasonic treatment at 220℃. The properties of treated oil sample only had minor changes.