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Method and equipment for producing ethanol product by taking ethyl acetate as raw material

A technology of ethyl acetate and fuel ethanol, applied in chemical instruments and methods, preparation of organic compounds, preparation of hydroxyl compounds, etc., can solve the problems of high energy consumption and material consumption, long production process and the like

Active Publication Date: 2015-05-27
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ethyl acetate is used as raw material for hydrogenation to produce ethanol. The main components of the reaction liquid are ethanol, ethyl acetate, hydrogen, ethane, acetaldehyde, methane, ether and water, etc., through azeotropic distillation, thermally coupled distillation and other technologies. Separation of hydrogenation reaction products can obtain products such as fuel ethanol and absolute ethanol, which solves the problems of long production process and high energy consumption and material consumption in the currently disclosed technologies such as extraction and distillation

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  • Method and equipment for producing ethanol product by taking ethyl acetate as raw material
  • Method and equipment for producing ethanol product by taking ethyl acetate as raw material
  • Method and equipment for producing ethanol product by taking ethyl acetate as raw material

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Embodiment 1

[0069] Ethyl acetate and hydrogen are used as raw materials to produce ethanol products through the catalytic hydrogenation reaction of ethyl acetate and the refining process of ethanol products. For the production process, see figure 1 —Ethyl acetate catalytic hydrogenation reaction unit flow chart, figure 2 — Flow chart of ethanol product refining unit and image 3 -Schematic diagram of the structure and operation of the next-door tower, the specific production process is as follows:

[0070] 1. Ethyl acetate catalytic hydrogenation reaction unit

[0071] Ethyl acetate catalytic hydrogenation reaction unit includes: evaporator 1, hydrogenation reactor 2, gas-liquid separation tower 3, etc. Its main function is to use ethyl acetate and hydrogen as raw materials to perform gas-phase catalytic hydrogenation in the hydrogenation reactor The hydrogenation reaction product mainly containing ethanol is obtained, and the hydrogenation reaction liquid is processed through the gas-...

Embodiment 2

[0091] Ethyl acetate and hydrogen are used as raw materials to produce ethanol products through the catalytic hydrogenation reaction of ethyl acetate and the refining process of ethanol products. For the production process, see figure 1 —Ethyl acetate catalytic hydrogenation reaction unit flow chart, figure 2 — Flow chart of ethanol product refining unit and image 3 -Schematic diagram of the structure and operation of the next-door tower, the specific production process is as follows:

[0092] 1. Ethyl acetate catalytic hydrogenation reaction unit

[0093] Ethyl acetate catalytic hydrogenation reaction unit includes: evaporator 1, hydrogenation reactor 2, gas-liquid separation tower 3, etc. Its main function is to use ethyl acetate and hydrogen as raw materials to perform gas-phase catalytic hydrogenation in the hydrogenation reactor A hydrogenation reaction product mainly containing ethanol is obtained, and the treated hydrogenation reaction liquid is sent to an ethanol p...

Embodiment 3

[0121] Ethyl acetate and hydrogen are used as raw materials to produce ethanol products through the catalytic hydrogenation reaction of ethyl acetate and the refining process of ethanol products. For the production process, see figure 1 —Ethyl acetate catalytic hydrogenation reaction unit flow chart, figure 2 — Flow chart of ethanol product refining unit, the specific production process is described as follows:

[0122] 1. Ethyl acetate catalytic hydrogenation reaction unit

[0123] Ethyl acetate catalytic hydrogenation reaction unit includes: evaporator 1, hydrogenation reactor 2, gas-liquid separation tower 3, etc. Its main function is to use ethyl acetate and hydrogen as raw materials to perform gas-phase catalytic hydrogenation in the hydrogenation reactor The hydrogenation reaction product mainly containing ethanol is obtained, and the hydrogenation reaction liquid is processed through the gas-liquid separation tower 3 and other equipment, and the excess hydrogen is rec...

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Abstract

The invention discloses a method and equipment for producing an ethanol product by taking ethyl acetate as a raw material. The method comprises the following step: by taking ethyl acetate and hydrogen as the raw materials, adopting technologies and equipment including a copper-based catalyst, gas phase catalytic hydrogenation, reaction heat recovery, reaction product purification, ternary azeotropic distillation, a dividing wall tower and thermally-coupled distillation. The device is mainly characterized by comprising an ethyl acetate catalytic hydrogenation reaction unit and an ethanol product refining unit, wherein ethyl acetate and hydrogen raw materials are treated by the ethyl acetate catalytic hydrogenation reaction unit to obtain hydrogenation reaction liquid containing ethanol, and the hydrogenation reaction liquid is conveyed to the ethanol product refining unit to obtain an ethanol product; and the ethanol product refining unit comprises a light component removal tower and a rectification tower, light impurity components such as hydrogen, nitrogen and ethane of the hydrogenation reaction product are firstly mainly removed by virtue of the light component removal tower, and the treated hydrogenation reaction liquid is conveyed to the rectification tower to mainly remove impurity components such as acetaldehyde, ethyl ether and ethyl acetate to obtain a fuel ethanol product or an absolute ethanol product.

Description

technical field [0001] The invention belongs to the technical field of organic chemical industry, and in particular relates to a method and equipment for producing ethanol products using ethyl acetate (also known as ethyl acetate) as a raw material. Background technique [0002] Ethanol (CH 3 CH 2 OH) commonly known as alcohol, ethanol products are mainly divided into edible alcohol, industrial alcohol, absolute ethanol (including fuel ethanol) and other products according to different functions and components. [0003] The traditional ethanol production process mainly uses biomass such as corn, wheat, potato, sugarcane and lignocellulose as raw materials, and is made through production units such as enzymolysis, fermentation, rectification and dehydration, and can also be made by hydration of ethylene raw materials. Affected by the price of crude oil, the production of ethanol by ethylene hydration method is greatly restricted. At present, my country mainly uses biomass as...

Claims

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Application Information

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IPC IPC(8): C07C31/08C07C29/149
CPCC07C29/149C07C31/08Y02P20/50
Inventor 张敏华李永辉耿中峰时峰付存亭王海宝欧阳胜利董秀芹吕惠生
Owner TIANJIN UNIV
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