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Method for producing ethanolamine

A technology of ethanolamine and ethylene oxide, which is applied in chemical instruments and methods, preparation of organic compounds, preparation of aminohydroxy compounds, etc., can solve the problems of high reaction pressure of ethylene oxide, low selectivity of ethanolamine and high reaction temperature, Achieve the effect of low reaction temperature, simple regeneration and good acidity distribution

Active Publication Date: 2010-11-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is the technical problem of high reaction temperature, high reaction pressure, low conversion rate of ethylene oxide and low selectivity of ethanolamine in the prior art, and a new method for producing ethanolamine is provided

Method used

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  • Method for producing ethanolamine
  • Method for producing ethanolamine
  • Method for producing ethanolamine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Mix 187 g of silica sol with 200 mL of deionized water, stir at room temperature for 10 minutes, then add 5.6 mL of ethylenediamine to the above mixed solution, and stir at room temperature for 0.5 hours; 2 / Al 2 O 3 =25 (molar ratio) ratio is called 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 colloid, adjust the pH of the system to 13-14, continue to stir for 1 hour, then transfer to the crystallization kettle, and keep it at 180°C for 36 hours. The crystallized product was washed with deionized water and dried at 100°C. The molecular sieve obtained after drying was placed in a muffle furnace and calcined in an air atmosphere with an air flow rate of 100 ml / min and a temperature of 15 The temperature was raised to 600°C at a rate of °C / min, and calcined at this temperature for 6 hours, thereby obtaining a molecular sieve precursor I. After placing the mo...

Embodiment 2～15

[0013] The preparation of the catalyst and the evaluation of the catalyst according to the various steps and conditions obtained in Example 1 are just to change the types of raw materials, crystallization conditions, calcination conditions, raw material ratios, surface treatment and catalyst molding factors and other synthesis conditions, and list the synthesis conditions In Table 1; the catalysts obtained by different synthesis methods were evaluated under the same evaluation conditions, and the evaluation results are listed in Table 2.

Embodiment 16～28

[0015] The catalysts were prepared and evaluated according to the steps and conditions of Example 1, except that the molar ratio of ammonia to ethylene oxide, reaction temperature, system pressure, space velocity and other process parameters were changed in the evaluation conditions, which are listed in Table 3.

[0016]

[0017]

[0018]

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PUM

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Abstract

The invention relates to a method for producing ethanolamine, mainly solving the technical problem of high reaction temperature and high system pressure in the prior art. The technical problem is well solved by using a technical scheme in which ethylene oxide and ammonia are used as raw materials and ZSM-5 is taken as a catalyst for reaction to produce ethanolamine under the conditions that the mole ratio of ammonia to ethylene oxide is 0.5-15, the reaction temperature is 50-100 DEG C, the system pressure is 4-12 MPa, and liquid-phase space velocity is 0.5-4h<-1>. The method can be used in the industrial production of the ethanolamine.

Description

Technical field [0001] The invention relates to a method for producing ethanolamine. Background technique [0002] Ethanolamine compounds include monoethanolamine (MEA), diethanolamine (DEA) and triethanolamine (TEA). Since the end groups of ethanolamine compounds are hydroxyl and amine groups, respectively, they have the chemical properties of alcohols and amines. The bifunctional group makes it an important organic intermediate with a wide range of uses. Ethanolamine is an important basic raw material for the production of surfactants, medicines, polyurethane additives, rubber processing additives, antifreeze additives and other products. At present, the production of ethanolamine mainly adopts the ethylene oxide ammonolysis method. Since Knorr (Knorr L. Chem. Bev., 1897, 30: 909-911; Chem. Bev., 1899, 32: 729-731) first discovered the synthesis of ethanolamine by the ammonia method, the research on the synthesis of ethanolamine has attracted more research interest . Resear...

Claims

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Application Information

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IPC IPC(8): C07C213/04C07C215/08C07C215/12B01J29/40
Inventor 冯汝明刘仲能谢在库侯闽渤吴征
Owner CHINA PETROLEUM & CHEM CORP
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