Production method of ethanolamine

A production method and technology of ethanolamine, applied in chemical instruments and methods, preparation of amino hydroxyl compounds, molecular sieve catalysts, etc., to achieve the effects of simplifying the separation process, facilitating diffusion, and improving selectivity

Active Publication Date: 2012-10-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the problem that the product needs to be separated by multiple towers in the existing production technology

Method used

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  • Production method of ethanolamine
  • Production method of ethanolamine
  • Production method of ethanolamine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Mix 187g of silica sol with 200mL of deionized water, stir at room temperature for 10 minutes, then measure 5.6mL of ethylenediamine into the above mixed solution, and stir at room temperature for 0.5 hours; 2 / Al 2 o 3 The ratio of =20 (molar ratio) weighs Al 2 (SO 4 ) 3 18H 2 O, added to the above mixed solution, and vigorously stirred for 0.5 hours, a white viscous colloid will be obtained. Add 8g of NaOH to the body colloid, adjust the pH value of the system to 13-14, and continue to stir for 1 hour, then transfer to a crystallization tank, and keep the temperature at 140°C for 48 hours. The crystallized product was washed with deionized water and dried at 100°C. The dried molecular sieve was placed in a muffle furnace and calcined in an air atmosphere with an air flow rate of 100 ml / min. The temperature was raised to 600°C at a rate of °C / min, and calcined at this temperature for 6 hours, thereby obtaining the molecular sieve precursor I. The molecular sieve...

Embodiment 2】～【 Embodiment 15

[0023] According to the various steps and conditions of Example 1 to prepare the catalyst and evaluate the catalyst, it is only to change the silicon-aluminum ratio of the raw materials, the doping elements, the ratio of the reaction raw materials, the temperature and pressure factors of the evaluation system, etc., and list the results in the table 1. .

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Abstract

The invention relates to a production method of ethanolamine, and aims to mainly solve the problem that products need separation by multiple towers in the existing production technologies. According to the invention, EO and NH3 are adopted as raw materials, which contact a binder-free zeolite molecular sieve catalyst having an MFI structure for reaction to generate effluent I. The effluent I is subjected to deamination by a deamination tower to generate effluent II, which enters an MEA tower so as to realize product separation. The technical scheme adopted in the invention well solves the problem, and can be applied to industrial production of ethanolamine.

Description

technical field [0001] The invention relates to a production method of ethanolamine. Background technique [0002] Ethanolamine is the general term for monoethanolamine (abbreviation: ethanolamine), diethanolamine (DEA) and triethanolamine (TEA). Since the ethanolamine compound contains two functional groups: hydroxyl group and amine group, it has some chemical properties and new properties of alcohol and amine compounds. The characteristics of bifunctional groups and the interaction between them make it an important organic intermediate and chemical end product with a wide range of uses. In recent years, the market demand for ethanolamine has been increasing day by day. One of the uses of ethanolamine is to produce important basic raw materials for surfactants, medicines, polyurethane additives, rubber processing aids, antifreeze additives and other products. At present, the production method of ethanolamine mainly adopts the ethylene oxide ammonia solution method. Since ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C215/08C07C215/12C07C213/04B01J29/40B01J29/46B01J35/10
Inventor 冯汝明王德举刘仲能郭友娣王辉吕建刚
Owner CHINA PETROLEUM & CHEM CORP
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