摘要
以有机胺和非离子表面活性剂为联合柱撑剂制备柱撑改性钙基碱性白土。以柱撑改性钙基碱性白土为脱酸剂对高酸值润滑油基础油(简称基础油)650SN和其它重质基础油进行中和吸附脱酸研究,考察脱酸剂的层间结构和组成、脱酸剂添加量、脱酸温度、脱酸时间对基础油脱酸效果的影响。结果表明:白土与CaO质量比为5∶3的柱撑改性碱性白土的脱酸效果最好,在该脱酸剂添加量为基础油质量的1.5%、反应温度80℃、反应时间4h的条件下,650SN基础油的酸值从0.109 8mgKOH/g下降到0.023 9mgKOH/g。与普通碱性白土相比,柱撑改性钙基碱性白土的中和吸附脱酸效果好,脱酸剂用量少,且对不同种类基础油的适用性强。
Pillared alkaline Ca-bentonite samples were prepared with organic amine and non-ionic surfactant and they were used as deacidification agent to remove acid from high acid value 650SN and other heavy lube base oil. Factors influencing the acid removal of lube base oil, such as the layer struc- ture and composition of deacidification agent, as well as agent dosage, treating temperature and time were studied. Test results showed that pillared alkaline Ca-bentonite sample prepared with clay/CaO mass ratio of 5/3 exhibited the best acid removal rate; using said sample with a dosage of 1.5 % （based on the mass of base oil）, treating at 80℃ for 4 h, the acid value of 650SN lube base oil dropped from 0. 109 8 mgKOH/g to 0. 023 9 mgKOH/g. Compared with conventional alkaline bentonite, pillared alkaline Ca-bentonite possess better deacidification efficiency, less consumption and good adaptability to different lube base oil.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2012年第12期35-38,共4页
Petroleum Processing and Petrochemicals
关键词
润滑油基础油
酸值
脱酸
有机改性钙基碱性白土
lube base oil
acid value
deacidification
organic modified alkaline Ca-bentonite
