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

A butyl acetate, high conversion technology, applied in the preparation of carboxylate, chemical instruments and methods, preparation of organic compounds, etc., can solve the difficulty of preparing high-purity butyl acetate, the complex composition of the product refining system, and the separation process. The problems such as complicated process, to achieve the effect of simplifying the separation process settings, reducing the energy consumption of preparation, and simplifying the preparation process

Pending Publication Date: 2021-10-12
丹东明珠特种树脂有限公司
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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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  • Butyl acetate high-conversion-rate preparation method and preparation system
  • Butyl acetate high-conversion-rate preparation method and preparation system

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Embodiment Construction

[0014] The preparation system for realizing the high conversion rate preparation method of butyl acetate disclosed in this patent application, the basic composition of the system includes a tube reactor 1, and a solid catalyst is filled in the tube reactor 1, and the solid catalyst can be a cationic resin catalyst , heteropolyacid catalyst or molecular sieve catalyst, preferably sulfonic acid series macroporous cation exchange resin catalyst.

[0015] Acetic acid and butanol are mixed by pipelines 5 and 6 at a molar ratio of 1 to 2:1 respectively, and then enter tube reactor 1. Heat transfer oil pipeline 7 controls the temperature and reaction conditions of tube reactor 1 in the range of 90-110°C. At normal pressure and space velocity 1.0~10h -1 reaction. The tube reactor 1 is provided with uniform heat supply reaction conditions by the heat conduction oil. In addition to butyl acetate, the reaction product also includes water and a small amount of butanol. At a lower tempera...

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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...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C67/08C07C67/54C07C69/14
CPCC07C67/08C07C67/54C07C69/14Y02P20/10
Inventor 吕晓东王义成冷东斌张伟段宏毅彭慧敏管秀明吴万春孙明丽
Owner 丹东明珠特种树脂有限公司
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