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A kind of triethanolamine continuous production device and process

A technology of triethanolamine and ethanolamine, applied in organic chemistry, chemical/physical/physical chemical processes, chemical instruments and methods, etc., can solve the problems of low purity of triethanolamine, intermittent reaction, etc., shorten reaction time, reduce side reactions, The effect of improving the reaction selectivity

Active Publication Date: 2018-11-02
大连微凯化学有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of low purity and intermittent reaction of triethanolamine prepared by the above method, the present invention provides a continuous production device and process for triethanolamine

Method used

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  • A kind of triethanolamine continuous production device and process
  • A kind of triethanolamine continuous production device and process
  • A kind of triethanolamine continuous production device and process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] like figure 1 As shown, the ethylene oxide gas is liquefied and added to the ethylene oxide storage tank V01 and the ethylene oxide storage tank IV03, and pressurized to 0.8MPa with nitrogen gas; quantitative water is put into the ammonia water storage tank V02, and the liquid ammonia is passed through Put the pressure into the ammonia water storage tank V02, react with water to prepare an ammonia solution with a concentration of 60%, pressurize it to 1.2MPa with nitrogen gas, and control ammonia / alkane (referring to NH 3 The molar ratio to ethylene oxide) is 3, fed by feed pump I P01 and feed pump II P02 respectively, the total flow rate of feed is 2.0L / h, microchannel heat exchanger E01, micro mixer MCR-1 And the temperature of the tube reactor ST-1 is set to 90 °C, the back pressure valve I BPV01 back pressure is 4.0MPa, the two feed liquids enter the micro-mixer MCR-1 to mix and further React for 10 minutes, the reaction liquid flows through the back pressure valve...

Embodiment 2

[0060] The device and process are the same as in Example 1, except that 80% ammonia water is prepared, the ammonia / alkane molar alkane ratio is 2, and the microchannel heat exchanger E01, micro-mixer MCR-1 and tubular reaction are used in the reaction of ethanolamine production. The temperature of the device ST-1 is set to 100 degrees, and the back pressure of the back pressure valve I BPV01 is 5.0 MPa; the obtained triethanolamine has a purity of 91%.

Embodiment 3

[0062] The device and process are the same as in Example 1, except that 95% ammonia water is prepared, the ammonia / alkane molar ratio is 1, and the microchannel heat exchanger E01, micromixer MCR-1 and shell-and-tube reactor are used in the reaction of ethanolamine production. The temperature of ST-1 is set at 120 degrees, and the back pressure valve I BPV01 back pressure is 6MPa; The temperature of the micro-mixer I MCR-2 and the tubular reactor I ST-2 in the production of triethanolamine is set at 50 degrees, and the obtained three The purity of ethanolamine is 90.3%.

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Abstract

The invention relates to a continuous production device and process for triethanolamine, particularly relates to the microfluid continuous production device and process for high-purity triethanolamine and belongs to the field of synthesis of ethanolamine. According to the continuous production device and process for the triethanolamine, provided by the invention, a microfluid production device is used, a micro-mixer can be used for enabling epoxyethane to rapidly react with ammonia water completely under the conditions of high pressure and high temperature, no superfluous epoxyethane continues to react with EA to produce byproducts, and thus an ethanolamine mixed solution which is free of the byproducts is obtained; and by using the efficient mass transfer characteristic of the micro-mixer, the selectivity of reaction of the epoxyethane with MEA and DEA is improved, so that the high-purity triethanolamine is obtained.

Description

technical field [0001] The invention relates to a continuous production device and process of triethanolamine, in particular to a microfluidic continuous production device and process of high-purity triethanolamine, belonging to the field of ethanolamine synthesis. Background technique [0002] Ethanolamine (EA) is the general designation of the compounds monoethanolamine (MEA), diethanolamine (DEA) and triethanolamine (TEA), which is prepared by the ring-opening reaction of ammonia water and ethylene oxide. The main reaction formula is as follows: [0003] [0004] At the same time, ethylene oxide reacts with water and EA to generate by-products such as polyols and polyalcohol ethers. [0005] At present, there is a great demand for triethanolamine in the market, especially high-purity triethanolamine. The theoretical molar ratio for generating triethanolamine is ethylene oxide:ammonia=3:1, but in practice, the purity of triethanolamine experimentally obtained accordin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C213/04C07C215/12B01J19/00
CPCB01J19/0093C07C213/04C07C215/12
Inventor 曾伟滕坤聂挺魏克思
Owner 大连微凯化学有限公司