润滑油溶剂精制过程中有机酸分布的研究

用毛细管气相色谱－质谱联用的方法对润滑剂精制过程中回收循环溶剂Ｎ－甲基砒咯烷酮中残留的有机酸酯化物和直接从原油 分离出的有机酸的甲酯化物进行了研究；前者色谱分离出了２６个甲酯峰，ＧＣ／ＭＳ确定了其中的１７个主要成份，占有机酸甲酯总量的９０．８１％；后者色谱分离出了２９个甲酯峰，ＧＣ／ＭＳ确定了其中的２０个主要成份，占有机酸甲酯总量的９２．１１％；对前者色谱还分离出一个二重峰，占整个样品总量的９６．

Study on the Distribution of Organic Acid in the Process of Lube Solvent Refining

Research have been done on the residual organic acid in the recovered circulating solvent N-methyl pyrrolidone (NMP) of lube solvent refining and methyl esters of organic acid separated directly from crude oil by capillary gas chromatography-mass spectrometry(GC/MS) The former has produced 26 methyl ester peaks by GC, and determined 17 main components of them by GC/MS, which make up 90.81% of the total amount of methyl ester of organic acid; the latter has given 29 methyl ester peaks by GC, and determined 20 main components of them by GC/MS, which make up 92.11% of the total methyl ester of organic acid. For the former, it has given a double peak by GC which makes up 96.53% of the total amount of the sample, it has been determined as 4-methyl aminobutyric acid and NMP by GC/MS. In the two samples,the component of organic acid varies greatly.The first one mainly contains 4-methyl aminobutyric acid and some straight chain fatty acid of low carbon, and the other, mainly the straight chain fatty acid of high carbon.