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Device and method for non-equilibrium catalytic reaction of ethylamine

A technology of catalytic reaction and balanced reaction, applied in chemical instruments and methods, preparation of organic compounds, organic chemistry, etc., can solve the problems of increased proportion of by-products, increased energy consumption, increased waste discharge, etc., to reduce by-products, reduce Energy consumption, elimination of product cycle effects

Pending Publication Date: 2018-04-20
NINGBO UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually, the products with less demand are separated and then circulated in the reactor to obtain the proportion of products that meet the market demand. This practice increases a lot of energy consumption, and at the same time greatly increases the proportion of by-products and waste emissions.

Method used

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  • Device and method for non-equilibrium catalytic reaction of ethylamine

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The device for the non-equilibrium catalytic reaction of ethylamine includes a reactor (1), a static mixer (2), a controller (3), an in-situ infrared spectrum (4), an ethanol vaporization chamber (5), an ammonia vaporization chamber (6), The first heat exchanger (7), the second heat exchanger (8), automatic valve I (301), automatic valve II (302) and automatic valve III (303); There is a reactor inlet (11), a reactor outlet (15) at the lower end, an unbalanced reaction section (12), a rectifying packing (13) and a balanced reaction section (14) are arranged in the inner chamber from top to bottom, and the side is in the non-equilibrium reaction section (14). An intermediate outlet (17) is provided between the equilibrium reaction section (12) and the rectification packing (13), and an intermediate inlet (16) is provided on the side between the rectification packing (13) and the equilibrium reaction section (14); the controller (3 ) is provided with a signal input termin...

Embodiment 2

[0025] In the device for the non-equilibrium catalytic reaction of ethylamine, except that "the diameter of the tube in the non-equilibrium reaction section (12) is Φ57×3.5 mm, and the ratio of height to diameter of the tube is 10", "the catalyst in the non-equilibrium reaction section (12) is A mixture of 50-mesh mordenite and 50-mesh quartz sand, the mass ratio of mordenite to quartz sand in the mixture is 1:10", "the diameter of the tube in the equilibrium reaction section (14) is Φ19×2 mm, the tube The aspect ratio is 200", "the catalyst in the equilibrium reaction section (14) is supported Co / γ-Al 2 o 3 Catalyst, the mass content of Co is 21% " except that all the other contents are identical with embodiment 1.

[0026] In the non-equilibrium catalytic reaction method of ethylamine: except that "the industrial ethanol from the ethanol raw material tank is heated to 130°C through the tube side of the first heat exchanger (7), and then enters the ethanol vaporization chamb...

Embodiment 3

[0028] In the device for the non-equilibrium catalytic reaction of ethylamine, except that "the diameter of the tube in the non-equilibrium reaction section (12) is Φ57×3.5 mm, and the ratio of height to diameter of the tube is 40", "the catalyst in the non-equilibrium reaction section (12) is A mixture of 30-mesh mordenite and 80-mesh quartz sand, the mass ratio of mordenite to quartz sand in the mixture is 1:8", "the diameter of the tube in the equilibrium reaction section (14) is Φ57×3.5 mm, the tube The aspect ratio is 100", "the catalyst in the equilibrium reaction section (14) is supported Co / γ-Al 2 o 3 Catalyst, the mass content of Co is 19% " except that all the other contents are identical with embodiment 1.

[0029] In the non-equilibrium catalytic reaction method of ethylamine: except that "the industrial ethanol from the ethanol raw material tank is heated to 120°C through the tube side of the first heat exchanger (7), and then enters the ethanol vaporization cham...

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Abstract

The invention relates to a device and a method for non-equilibrium catalytic reaction of ethylamine. The device comprises a reactor, a static mixer, a controller, an in-situ infrared spectrometer, anethanol vaporizing chamber, an ammonia vaporization chamber, a first heat exchanger, a second heat exchanger, an automatic valve I, an automatic valve II and an automatic valve III. According to the method, online monitoring control is used for regulating and controlling a non-equilibrium reaction and an equilibrium reaction. After the device and the method are adopted, the proportion of ethylamine reaction products is adjusted, so that the market demand is met; the product circulation is reduced or eliminated, the energy consumption is reduced, and the by-products are reduced.

Description

technical field [0001] The invention belongs to the production technology of low-carbon aliphatic amines, and in particular relates to a device and method for non-equilibrium catalytic reaction of ethylamine. Background technique [0002] Low-carbon aliphatic amines, including monoethylamine, diethylamine, triethylamine, mono-n-propylamine, di-n-propylamine, tri-n-propylamine, mono-isopropylamine, di-isopropylamine, mono-n-butylamine, di-n-butylamine, tri-n-propylamine Butylamine, monoisobutylamine, diisobutylamine, etc., are mainly produced by catalytic amination of ammonia and alcohol under the condition of hydrogen. Ethylamine is one of the largest yields, including monoethylamine, diethylamine and triethylamine. The commonly used catalyst for production is supported Co / γ-Al 2 o 3 Catalyst, this catalyst is a balanced catalyst with good catalytic effect. Because it is a balanced catalyst, the ratio of the reaction product is basically fixed. For example, when the Co loa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C209/16C07C211/05
CPCC07C209/16C07C211/05
Inventor 沈剑
Owner NINGBO UNIVERSITY OF TECHNOLOGY
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