Diglycolamine synthesis tower

A technology of diglycolamine and synthesis tower, which is applied in the field of diglycolamine synthesis tower, and can solve the problems of low yield, inability to use industrialized production, and many side reactions.

Inactive Publication Date: 2014-12-03
ANHUI HAOYUAN CHEM IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the domestic prior art, there is no reactor that can be used for the industrial production of diglycol amine with diethylene glycol, liquid ammonia, hydrogen and soft water as raw materials, only the report of preparing diglycol amine in the laboratory, but its harvest Low efficiency, many side reactions, can not be used for industrial production

Method used

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  • Diglycolamine synthesis tower
  • Diglycolamine synthesis tower
  • Diglycolamine synthesis tower

Examples

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Embodiment Construction

[0022] Taking four distributors 5 and four catalyst layers 6 alternately arranged and four axisymmetric overflow holes 13 on the same circumference are opened in the lower part of the drip tube 11 as an example, non-limiting embodiments are described as follows.

[0023] Fill the tower body 1 with copper-nickel catalyst from the manhole 7 and close the manhole 7 after the filling is completed.

[0024] Nitrogen is introduced into the tower body 1 from the air inlet 2 to replace the air in the tower body 1. After the replacement is completed, the preheated hydrogen is continuously introduced into the tower body 1 to raise the temperature and pressure of the tower body 1, and the hydrogen is recycled. When the catalyst temperature and the pressure in the tower rise to the reaction temperature and pressure, the circulation is stopped. The process conditions of the catalytic ammoniation reaction are: the catalyst temperature is 180-240°C and the pressure is 1.60-1.75MPa. Therefore, in...

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PUM

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Abstract

The invention discloses a diglycolamine synthesis tower which is characterized in that an air inlet and a pressure gage are arranged on the top of a tower body, wherein a liquid inlet is formed in a tower wall on the upper part; a discharge opening is formed in the tower bottom; at least three distributors and three catalyst layers are alternatively arranged in the tower body; a manhole is formed in the tower wall below the distributor; a discharging hole and a thermodetector are arranged on a tower wall where the catalyst layers are positioned; the distributors are formed in a way that a group of weeping pipes and another group of airflow pipes are uniformly distributed on a bottom plate; pipe caps are fastened to the upper ends of the weeping pipes; at least three overflow holes in axial symmetry on the same circumference are formed in positions nearby the pipe wall in the middle; the tail end of the pipe wall is sawtooth-shaped; and pipe caps are arranged at the upper ends of the airflow pipes. According to the diglycolamine synthesis tower, the total yield of diglycolamine and morpholine is more than or equal to 90 percent, the yield of diglycolamine is more than or equal to 65 percent, the yield of morpholine is more than or equal to 25 percent, and due to a fewer side reactions, the purity of the refined diglycolamine is more than or equal to 99 percent.

Description

1. Technical Field [0001] The invention relates to a reaction device for preparing fine chemicals, in particular to a diethylene glycol amine synthesis tower. 2. Background technology [0002] Diglycolamine, also known as 2-(2-aminoethoxy)ethanol, molecular formula C 4 H 11 NO 2 , Is a colorless syrupy liquid. It is an important solvent and organic raw material. It can dissolve with water, dissolve aromatic hydrocarbons and absorb acid gases (H 2 S and CO 2 ). Mainly used as acid gas absorbent, surface active agent, wetting agent, and desulfurizer. It can also be used as a raw material for polymers. It is widely used in metal, electronics, medicine and other industries. [0003] There is no reactor in the domestic existing technology that can be used for the industrial production of diethylene glycol, liquid ammonia, hydrogen and soft water as raw materials to synthesize diethylene glycol amine. There are only reports of the preparation of diethylene glycol amine in the laboratory,...

Claims

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Application Information

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IPC IPC(8): B01J8/02C07C213/02C07C217/08C07D295/023C07D295/027
Inventor 郑高潮凡殿才张海生王继学梅树美
Owner ANHUI HAOYUAN CHEM IND GRP
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