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Method for producing ethanolamine

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

Active Publication Date: 2013-04-03
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 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 =25 (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 180°C for 36 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. 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 precursor I was placed in a cycloh...

Embodiment 2～15

[0013] According to the various steps and conditions obtained in Example 1 to prepare the catalyst and evaluate the catalyst, it is only to change the synthesis conditions such as the type of raw materials, crystallization conditions, roasting conditions, raw material ratios, surface treatment and catalyst molding factors, and list the synthesis conditions. In Table 1; under the same evaluation conditions, the catalysts obtained by different synthesis methods are evaluated, and the evaluation results are listed in Table 2.

Embodiment 16～28

[0015] According to the various steps and conditions of Example 1 to prepare the catalyst and evaluate the catalyst, only the process parameters such as the molar ratio of ammonia to ethylene oxide, reaction temperature, system pressure, and space velocity in the evaluation conditions are changed, which are listed in Table 3.

[0016]

[0017]

[0018]

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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 present invention relates to a process for the production of ethanolamine. Background technique [0002] Ethanolamine compounds include monoethanolamine (MEA), diethanolamine (DEA) and triethanolamine (TEA). Since the terminal groups of ethanolamine compounds are hydroxyl and amine groups respectively, they have the chemical properties of alcohol and amine compounds. The dual functional groups make it an important organic intermediate with a wide range of uses. Ethanolamine is an important basic raw material for the production of surfactants, pharmaceuticals, 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 with ammonia, the research on the synthesis of ethanolamine has attracted more...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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