Method for producing ethanol through acetic acid esterification-hydrogenation

A technology of acetic esterification and ethyl acetate, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., to achieve good technical effects, flexible selection of product specifications, and reduced energy consumption.
CN103387481AInactive Publication Date: 2013-11-13SHANGHAI HUAYI GRP CO
8 Cites 16 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI HUAYI GRP CO
Publication Date
2013-11-13
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a method for producing ethanol through acetic acid esterification-hydrogenation, which mainly solves the problems in the prior art that the whole flow of acetic acid esterification, ethyl ester hydrogenation and ethanol refining is not involved and ethyl ester hydrogenation only can be performed under the condition of high hydrogen ester content. The method for producing the ethanol through acetic acid esterification-hydrogenation comprises the following steps: (1) reacting ethanol with acetic acid to obtain a mixture containing ethyl acetate and water, performing azeotropic treatment to reach a condenser on the top of an esterification tower, then entering a separator for separating out water, and separating impurities out of coarse ester to obtain ethyl acetate; (2) enabling hydrogen and vaporized ethyl acetate to come into contact with a copper-containing catalyst in a reactor so as to perform hydrogenation reaction to obtain ethanol-containing fluid, and performing high-pressure gas liquid separation and low-pressure gas liquid separation to obtain coarse ethanol; and (3) separating the ethanol by using a light component removing tower and a heavy component removing tower to obtain an industrial ethanol or absolute ethanol product. According to the technical scheme, the problems in the prior art are solved well, and the method can be applied to production of the ethanol through acetic acid esterification-hydrogenation.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for producing ethanol through acetic esterification-hydrogenation. Background technique

[0002] Ethanol is one of the basic industrial raw materials, widely used in food, chemical industry, military industry, medicine and other fields: (1) disinfectant; (2) beverage and food; (3) basic chemical raw materials, can produce acetaldehyde, ether, acetic acid Ethyl ester, ethylamine and other chemical raw materials are also raw materials for the production of dyes, paints, detergents and other products; (4) Thinners, organic solvents, paint solvents, etc.; (5) Ethanol is also a non-polluting high-octane As a gasoline additive, as a vehicle fuel, ethanol can be transferred into gasoline.

[0003] At present, the production process of ethanol in industry mainly adopts two methods: starch sugar fermentation method and ethylene direct hydration method. Among them, ethanol produced by fermentation of starch and sugar accounts ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More