【摘要】：采用溶劑萃取-酸堿精制的非加氫聯(lián)合工藝脫除環(huán)烷基餾分油中的多環(huán)芳烴化合物(PCA)。對萃取劑的選擇、分離操作條件和酸堿溶液用量對脫除效果的影響進行了考察;利用FTIR對油品結(jié)構(gòu)進行表征;對實驗過程產(chǎn)生的酸渣、堿渣和廢液的利用及處理進行了討論。實驗結(jié)果表明,最佳條件為以N-甲基吡咯烷酮為溶劑,在劑油質(zhì)量比為2,萃取溫度為45℃的條件下,對原料油進行萃取,PCA含量由12.72%(w)降至3.76%(w);再用2%(w)的濃H_2SO_4溶液和2%(w)的NaOH溶液精制抽余油,此時精制油收率為41.71%,PCA含量為0.79%(w),總脫除率高達93.79%。
[Abstract]:Removal of polycyclic aromatic compounds (PCA). From naphthenic distillate by solvent extraction and acid-base refining The effects of extractant selection, separation operation conditions and the amount of acid-base solution on the removal efficiency were investigated. The oil structure was characterized by FTIR, and the utilization and treatment of acid slag, alkali residue and waste liquid produced during the experiment were discussed. The experimental results show that the optimum conditions are as follows: N- methylpyrrolidone as solvent, the ratio of solvent to oil is 2, and the extraction temperature is 45 鈩，

本文編號：2211537