Abstract
ABSTRACTAcids in FCC diesel is harmful to production equipments, storage, and transportation facilities. The complex deacidification process was adopted to remove acid from diesel using 2-methylimidazole and ammonia. The effect of all process parameters on removing acid from diesel was discussed, which included reaction temperature, mass ratio of complex deacidification agents, reaction time, and volume ratio of complex deacidification agents to diesel. Orthogonal experiments were done to optimize deacidification process on the basis of single factor experiments. The results showed that the optimum deacidification process was that volume ratio of complex deacidification agents to diesel was 0.20:1, reaction time was 12 min, mass ratio of 2-methylimidazole to ammonia was 0.4:1 and reaction temperature was 343 K. Under this condition, the deacidification rate reached 96.5%. This deacidification process had little effect on other physical and chemical properties of diesel.
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