Abstract: Removal of basic nitrogen compounds from FCC diesel oil with AlCl3/methanol complexing extraction agent was investigated. The results showed that the content of basic nitrogen compounds in FCC diesel oil was decreased, the appearance color and existent gum of diesel oil were improved greatly. Removal rate and feed oil recovery were obviously increased with the mixed solvents of methanol and formic acid. The removal rate was up to 96.6%, feed oil recovery was 97.0% when ratio of extraction solvent to oil was 1.0，formic acid/ methanol was 1:4, AlCl3 was 1.0g/L and reaction time was 3min.

摘要： 采用AlCl3/甲醇作络合萃取剂，考察了其对FCC柴油中碱性氮化物的脱除效果。结果表明：采用AlCl3/甲醇作络合萃取剂，可有效脱除FCC柴油中的碱性氮化物，同时柴油的外观色度也得到了改善。甲醇与甲酸组成的复合溶剂可明显提高碱氮的脱除率和柴油收率，同时减少了络合剂的用量。在剂油比为1.0，甲酸与甲醇体积比为1 : 4，AlCl3用量为1.0 g/L时，反应3 min，静置15 min，柴油的脱氮率达96.6%，收率可达97.0%。