Technology for continuously producing secbutyl acetate

Abstract

The invention discloses a technology for efficiently and continuously producing secbutyl acetate. In the technology, acetic acid and 1-butylene serve as raw materials, solid-liquid mixed acid serves as catalyst and an integrated system composed of an injection collision stream tower reactor, a rectification system, an oil-water separator and the like is adopted. Wherein the injection collision stream tower reactor is mainly composed of an injection-collision stream reaction section, a tower plate / filler tower-type reaction section, a forced circulation and control part and a catalyst replacing part, which greatly improves conversion rate of acetic acid and use ratio of butylene. The method for efficiently and continuously producing secbutyl acetate has the comprehensive advantages of compact structure, safety and reliability, high conversion rate, high material use ratio, low operation cost and the like.

Description

technical field

[0001] The invention relates to a new process for efficiently and continuously producing sec-butyl acetate. Background technique

[0002] Secondary butyl acetate is a colorless, flammable liquid with a fruity aroma. It is widely used in the paint, plastics, medicine and fragrance industries. It can also be used as an extractant, dehydrating agent and metal cleaning agent. The main synthetic method of sec-butyl acetate is two kinds of acid alcohol esterification method and olefin addition method, and the former synthetic method is exactly the esterification of acetic acid and sec-butyl alcohol, but the reaction speed of this method is slow, and reaction time is long, and product yield is low . The latter olefin addition method refers to the addition reaction of acetic acid and mixed C4 (or butene) under the action of an acid catalyst to directly synthesize sec-butyl acetate. This method directly utilizes olefin resources without alcohol as an intermediate, so...

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