Method for producing n-propyl acetate and method for producing allyl acetate

摘要

Provided is a method for producing n-propyl acetate, which is capable of obtaining high-purity allyl acetate with a low amount of coexisting water and is capable of producing n-propyl acetate with a high yield. The method includes an extraction process of subjecting a raw material liquid containing allyl acetate and water to an extraction operation using water as an extraction solvent and separating the extract into an oily phase and an aqueous phase, a distillation process of distilling the oily phase to obtain a distillate containing allyl acetate as a main component, and a hydrogenation process of subjecting the distillate to a hydrogenation reaction.

主权项

1. A method for producing n-propyl acetate, comprising:
a first oil-water separation process of separating a raw material liquid containing allyl acetate, water and acetic acid into an oily phase (A) and an aqueous phase (A); an extraction-separation process of subjecting the oily phase (A) to an extraction operation using water as an extraction solvent and separating the extract into an oily phase (B) containing allyl acetate as a main component and an aqueous phase (B) containing water as a main component; a first distillation process of distilling the oily phase (B) to obtain a distillate (X) containing allyl acetate as a main component; a second oil-water separation process of separating the distillate (X) into an oily phase (C) and an aqueous phase (C); a second distillation process of distilling the oily phase (C) to obtain a distillate (Y) containing allyl acetate as a main component; and a hydrogenation process of subjecting the distillate(Y) to a hydrogenation reaction, wherein the concentration of water (by mass) in distillate (Y) for use in the hydrogenation reaction is 100 ppm or less.