Method of removing heavy hydrocarbons from reaction products in the production of sec-butyl acetate

Abstract

The present invention relates to a method of removing heavy hydrocarbon from reaction products in producing sec-butyl acetate, characterized in that the method comprises: drawing out materials from the enrichment area of the heavy hydrocarbon; contacting the materials with water sufficiently to make the heavy hydrocarbon in materials and the water stratify naturally wherein the heavy hydrocarbon is contained in the upper layer and the water is contained in the lower layer; and discharging the upper layer and recycling the lower layer into the system. The enrichment area of heavy hydrocarbon refers to the area enriched with heavy hydrocarbon and formed in the bottom of an azeotropic distillation tower during the process of azeotropic separation, while the process of azeotropic separation refers to a process of feeding the mixture of sec-butyl acetate, acetate acid and heavy hydrocarbon into the azeotropic distillation tower and adding azeotropic agent into the azeotropic distillation tower to conduct azeotropic distillation, then evaporating the azeotropic mixture formed by sec-butyl acetate and azeotropic agent from the top of the azeotropic distillation tower, and meanwhile, the acetic acid and the heavy hydrocarbon falling into the bottom of the tower.