Butyl acetate high-conversion-rate preparation method and preparation system

Abstract

The invention provides a butyl acetate high-conversion-rate preparation method and a butyl acetate high-conversion-rate preparation system. The butyl acetate high-conversion-rate preparation method comprises the following steps: mixing acetic acid and butanol according to a molar ratio of (1-2): 1, and reacting in a tubular reactor filled with a solid catalyst under the following reaction conditions. The preparation system comprises a tubular reactor and a first rectifying tower for purifying the prepared product. The technical scheme has the technical advantage of low-energy-consumption operation on the basis of realizing high conversion rate and high yield, and can realize high-purity preparation of butyl acetate.

Description

technical field [0001] This patent application relates to a preparation method and a preparation system for esterification of organic matter, in particular to a preparation method and a preparation system for ethyl acetate. Background technique [0002] Butyl acetate is an important solvent and organic chemical raw material. Mainly used in the manufacture of collodion, nitrocellulose, artificial leather, medicine, plastics and spices; because of its fruity aroma, it can also be used as a food flavor; butyl acetate is miscible with organic solvents such as alcohols, ketones, and ethers, and can be used to manufacture Solvent for nitrocellulose paint, polyurethane paint, etc., used for artificial leather paint, automobile paint, etc.; can be used for the manufacture of coated paper, patent leather, etc.; can be used for offset printing, as a quick-drying agent for photosensitive materials; butyl acetate has moderate volatility , so it has good skin permeability and can be use...

AI Technical Summary

Problems solved by technology

But at present, the main problem that the conventional preparation technology of butyl acetate faces is: butyl acetate synthetic reaction is a reversible reaction, is limited by chemical equilibrium, and its reaction conversion rate is low; In addition, butyl acetate, butanol, water will interact The formation of binary or ternary azeotropes is difficult to separate, resulting in a very complicated composition of the product refining system, which causes great difficulties in the production of high-purity butyl acetate; in addition, unreacted butanol and acetic acid need to be recycled, and their separation The technological process is also very complicated, the total investment of equipment is large, and the energy consumption of operation is abnormally high

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