新型柴油脱酸剂室内实验  

Experiment of a new type of deacidification agent for diesel oil

作　　者：张群正[1] 闫龙龙[1] 田雪峰[1] 阳飞[1] 柯从玉[1] 潘青[2] 

机构地区：[1]西安石油大学化学化工学院,陕西西安710065 [2]西安交通大学药学院,陕西西安710061

出　　处：《应用化工》2016年第5期898-900,904,共4页Applied Chemical Industry

基　　金：2014年省级大学生创新创业训练计划(1039);2015年省级大学生创新创业训练计划(1339)

摘　　要：选用有机碱四甲基氢氧化铵为脱酸主剂,Na OH为脱酸助剂,对高酸柴油脱酸,通过单因素实验及正交实验对脱酸工艺条件进行优化。结果表明,最优化的脱酸为:四甲基氢氧化铵与环烷酸摩尔比为1∶1,氢氧化钠与四甲基氢氧化铵摩尔比为2∶1,碱浓度为3.5 mmol[OH-]/m L;脱酸温度70℃,反应时间80 min,搅拌强度700 r/min。该工艺适用于酸值<60 mg KOH/100 m L的柴油,能使柴油中的酸值降低到7 mg KOH/100 m L以下,环烷酸回收率达73.7%。新工艺克服了传统工艺中强碱消耗量大、乳化严重、污染环境等问题,同时具有用量少、成本低,资源最大化利用等优点,对柴油脱酸工艺有一定的指导意义。Using organic base tetramethylammonium hydroxide ammonium as main agent and Na OH as the adjuvant diesel oil acid of high acid. The process condition of agent was optimized by single factor experiment and orthogonal test. The results show that the optimization molar ratio of acid formula is tetramethylammonium hydroxide ammonium（ TMAH） to naphthenic acid（ NA） is 1∶ 1,sodium hydroxide to tetramethylammonium hydroxide ammonium（ TMAH） is 2∶ 1; the optimum concentration of alkali is 3. 5 mmol[OH-]/m L,the temperature,reaction time and stirring intensity were 70 ℃,80 min and 700 r/min,respectively. The process is applicable to the acid value of diesel oil less than 60 mg KOH/100 m L,which can make the acid value in diesel oil effectively reduced by 7 mg KOH/100 m L the recovery rate were73. 7%. The new deacidification agent overcomes the traditional process of large alkali consumption,serious emulsification,environmental pollution and other issues. At the same time,it has the advantages of less dosage,low cost,and the maximum the use of resources. The research has a certain guiding significance for the process of diesel oil removal.

关 键 词：柴油脱酸 有机碱 环烷酸 正交实验 

分 类 号：TQ028[化学工程]