Method for co-producing ethylamine and sec-butylamine

A technology for sec-butylamine and ethylamine, which is applied in the field of co-production of ethylamine and sec-butylamine, can solve problems such as unseen or unseen co-production of ethylamine and sec-butylamine, and achieves a simple and efficient separation process. The effect of solving the overcapacity of acetic acid

Pending Publication Date: 2022-05-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the existing patents, there is only a single ethylamine or a separate preparation method of sec-butylamine, and there is no process for the co-production of et

Method used

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  • Method for co-producing ethylamine and sec-butylamine
  • Method for co-producing ethylamine and sec-butylamine
  • Method for co-producing ethylamine and sec-butylamine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] This embodiment provides a method for the coproduction of ethylamine and sec-butylamine.

[0055] The first catalyst is the macroporous sulfonic acid cation exchange resin produced by Dandong Mingzhu Special Resin Co., Ltd.

[0056] The preparation method of the second catalyst is as follows:

[0057] (1) Carrier molding: take 300g of alumina powder and 6g of scallop powder and mix them in a kneader, add 270g of water, knead for 20min, then extrude into a 3mm thick clover shape with an extruder, dry at 120°C, and then heat at 800°C Calcined at lower temperature for 4 hours to obtain an alumina carrier.

[0058] (2) Loading active components: take 99.3g of Ni(NO 3 ) 2 ·6H 2 O (analytically pure), 51.08g of Cu(NO 3 ) 2 ·3H 2 O (analytical pure) was dissolved in water to be 162mL solution, and the above solution was loaded on the obtained 100g carrier by spraying twice; after each spraying, it was dried at 120°C for 4 hours, and then calcined at 400°C for 4 hours. ...

Embodiment 2

[0076] This embodiment provides a method for the coproduction of ethylamine and sec-butylamine.

[0077] The first catalyst is the macroporous sulfonic acid cation exchange resin produced by Dandong Mingzhu Special Resin Co., Ltd.

[0078] The preparation method of the second catalyst is as follows:

[0079] (1) Alumina carrier molding: Take 300g of alumina powder and 6g of kale powder in a kneader and mix them in a kneader, add 270g of water, knead for 20min, then extrude into a 3mm thick clover shape with an extruder, dry at 120°C, and then Calcined at 800°C for 4 hours to obtain an alumina carrier.

[0080] (2) Loading active components: Take 134.1g of Ni(NO 3 ) 2 ·6H 2 O (analytically pure), 31.05g of Cu(NO 3 ) 2 ·3H 2 O (analytical pure) was dissolved in water to be 168mL solution, and the above solution was loaded on the obtained 100g carrier by spraying twice; after each spraying, it was dried at 120°C for 4 hours, and then calcined at 400°C for 4 hours. hours, ...

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Abstract

The invention belongs to the technical field of chemical engineering, and particularly relates to a method for co-producing ethylamine and sec-butylamine. The method comprises the following steps: mixing excessive acetic acid with etherified C4, carrying out esterification reaction, mixing with hydrogen, carrying out hydrogenation reaction, and carrying out gas-liquid separation, rectification and hydrogen ammonification reaction to respectively obtain products containing ethylamine and sec-butylamine. According to the method for preparing and co-producing ethylamine and sec-butylamine provided by the invention, etherified C4 with a certain proportion is mixed into excessive acetic acid, a series of catalytic reactions are carried out, hydrogen and ammonia are sequentially added in the technological process, and finally, the acetic acid and etherified C4 are converted into ethylamine and sec-butylamine. The method for co-producing ethyl amine and sec-butylamine provided by the invention is simple in separation process, is suitable for industrial application, and can solve the phenomena of excessive acetic acid production capacity and unreasonable utilization of etherified C4 to a certain extent.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and more specifically relates to a method for co-producing ethylamine and sec-butylamine. Background technique [0002] Ethylamine is a chemical intermediate and organic solvent with a wide range of uses, mainly including monoethylamine, diethylamine, and triethylamine, and is widely used in pharmaceuticals, pesticides, military, chemical additives and other industries. [0003] Monoethylamine is a multi-purpose fine chemical product, which can be used in pharmaceuticals, printing and dyeing, mineral processing agents, photochemicals, textiles, high polymers, preservatives, dry cleaning agents, etc. It has a large market demand and broad application prospects. Diethylamine is mainly used in the production of herbicides, DAPE, rubber accelerators, textile auxiliaries, fungicides, corrosion inhibitors, etc. Triethylamine is mostly used in organic solvents, polymerization inhibitors in th...

Claims

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Application Information

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IPC IPC(8): C07C67/04C07C69/14C07C29/149C07C29/80C07C31/12C07C31/08C07C209/16C07C211/05C07C211/07B01J31/10B01J23/755B01J37/18B01J23/83
CPCC07C67/04C07C29/149C07C29/80C07C209/16B01J31/10B01J23/755B01J37/18B01J23/83C07C69/14C07C31/12C07C31/08C07C211/05C07C211/07
Inventor 向良玉田保亮唐国旗
Owner CHINA PETROLEUM & CHEM CORP
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