摘要
以58号全精炼石蜡为原料、空气为氧化剂、月桂基过氧化氢为引发剂,在相对温和条件下引发自由基链反应,对石蜡进行氧化改性,考察反应温度、反应时间、引发剂用量、空气流量等因素对氧化石蜡酸值、皂化值的影响。结果表明:在反应温度为130℃、反应时间为6 h、引发剂用量(w)为0.5%、空气流量为220 mL min的条件下,得到的氧化石蜡的酸值为40.5 mgKOH g,皂化值为65.3 mgKOH g;NaOH质量分数为1.2%、氧化石蜡质量分数为0.8%的二元体系与原油的平衡界面张力为2.9×10-3 mN m,砂岩表面原油洗脱率为61.0%,氧化石蜡产品具有较好的油水界面性能。
The oxidation modification of wax through free radical chain reaction initiated by lauryl hydrogen peroxide under relative mild conditions was studied using 58#fully-refined paraffin wax as raw material,air as oxidant and lauryl as initiator.The effect of reaction temperature and time,the amount of the initiator and the air flow on the acid number and saponification value of the oxidized wax were investigated.The results showed that at the optimized reaction conditions of a temperature of 130℃,a reaction time of 6 h,a initiator amount of 0.5%,and a air flow of 220 mL min,the acid mumber and saponification value of the oxidized product were 40.5 mgKOH g and 65.3 mgKOH g,respectively.The binary system consisted of 0.8%oxidized product and 1.2%sodium hydroxide used for oil-displacing system had an interfacial tension of 2.9×10-3 mN m with crude oil,and the oil removal rate at the surface of sandstone was 61.0%,indicating the excellent oil-water interface properties of paraffin oxidation product.
作者
李柏林
张健伟
于连才
Li Bailin;Zhang Jianwei;Yu Liancai(College of Chemistry and Chemical Engineering,Northeast Petroleum University,Daqing,Heilongjiang 163318;Refinery of Daqing Petrochemical Company,PetroChina)
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2020年第10期36-41,共6页
Petroleum Processing and Petrochemicals
基金
国家重点研发计划项目(2018YFC1801902)。
关键词
氧化石蜡
月桂基过氧化氢
酸值
皂化值
界面张力
洗油率
oxidized wax
lauryl hydrogen peroxide
acid mumber
saponification value
interfacial tension
oil removal rate
