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Production method of diethanolisopropanolamine

A monoisopropanolamine and production method technology, applied in the field of chemical building materials, can solve the problems of increasing energy consumption and process, not easy to improve economic benefits, and cumbersomeness, so as to reduce the generation of high boiling substances and inhibit the production of quaternary ammonium bases generation, to avoid the effect of reducing the purity

Inactive Publication Date: 2018-01-09
NINGBO YUANLI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the chromatographic content of the product can be improved by the distillation method, it also increases the energy consumption and the complexity of the process, so it is not easy to improve the overall economic benefit

Method used

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  • Production method of diethanolisopropanolamine
  • Production method of diethanolisopropanolamine
  • Production method of diethanolisopropanolamine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1: Add 10046Kg diethanolamine, 2050Kg water and 31Kg glacial acetic acid into the reaction kettle, then feed nitrogen into the reaction kettle to repeat the replacement three times, exhaust the air inside the reaction kettle, open the stirring paddle for stirring, and mix the materials Fully mix evenly, the rotating speed of the stirring paddle is 500rpm;

[0034] Step 2: In the case of room temperature, slowly and evenly add propylene oxide, the amount of propylene oxide added is 5272Kg, and the speed of adding is controlled at about 1171.6Kg / h, and the temperature of the reactor is gradually raised to 30°C;

[0035] Step 3: After the propylene oxide is added, the temperature of the reactor is raised to 60° C. within 30 minutes, and the temperature is maintained for 30 minutes to obtain the finished product diethanol monoisopropanolamine.

[0036] Wherein, the acid used here can also be various acids that can ionize protons, and can be various organic acids or in...

Embodiment 2

[0038] Step 1: Add 10046Kg diethanolamine, 700Kg water and 127Kg concentrated sulfuric acid into the reaction kettle, then feed nitrogen into the reaction kettle for three times of replacement, exhaust the air inside the reaction kettle, turn on the stirring paddle for stirring, and mix the materials Fully mix evenly, the rotating speed of the stirring paddle is 500rpm;

[0039] Step 2: At room temperature, slowly and evenly add propylene oxide, the amount of propylene oxide added is 5827Kg, and the adding speed is controlled at 1295Kg / h, and the temperature of the reactor is gradually raised to 80°C within 30 minutes ;

[0040] Step 3: After adding the propylene oxide, keep the temperature for another 30 minutes to obtain the finished product diethanol monoisopropanolamine.

Embodiment 3

[0042] Step 1: Add 10046Kg diethanolamine, 1010Kg water, 52Kg glacial acetic acid and 26Kg concentrated sulfuric acid into the reaction kettle, then feed nitrogen into the reaction kettle to repeat the replacement three times, exhaust the air inside the reaction kettle, and turn on the stirring paddle to carry out Stir, fully mix the materials evenly, the rotating speed of the stirring paddle is 500rpm;

[0043]Step 2: At room temperature, slowly and evenly add propylene oxide, the amount of propylene oxide added is 5549Kg, and the adding speed is controlled at 1233Kg / h, and the temperature of the reactor is gradually raised to 55°C within 30 minutes ;

[0044] Step 3: After the propylene oxide is added, the temperature of the reactor is raised to 70° C. within 30 minutes, and the temperature is maintained for 30 minutes to obtain the finished product diethanol monoisopropanolamine.

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Abstract

The invention provides a production method of diethanolisopropanolamine. The method comprises the following steps of S1, adding diethanol amine, water and acid into a reaction kettle; starting a stirring paddle for uniformly mixing each material; S2, in room temperature state, slowly adding epoxy propane; performing continuous stirring so that the epoxy propane and other materials can be uniformlymixed; raising the reaction temperature to 30 to 80 DEG C; S3, after all of the epoxy propane is added, performing heat insulation reaction on the reaction kettle for 30min to obtain a finished product of diethanolisopropanolamine. The diethanolisopropanolamine produced through the reaction of the diethanol amine and the epoxy propane can partially react with the epoxy propane under the water existence condition to produce quaternary amine alkali; the quaternary amine alkali is a strongly basic catalyst and can be used for catalyzing hydroxyls on the diethanolisopropanolamine to continuouslyreact with the epoxy propane to form ester. The acid can fast and effectively achieve the neutralization effect on the quaternary amine alkali in the reaction process; the reaction of the diethanolisopropanolamine in the direction of byproducts of eater is reduced.

Description

technical field [0001] The invention relates to the field of chemical building materials, in particular to a production method of diethanol monoisopropanolamine. Background technique [0002] Since 2008, the cement output of cement enterprises above designated size in the country has exceeded 1.388 billion tons, and cement grinding aids usually need to be added in an amount of 0.01-0.05% of cement. Therefore, cement grinding aids have a considerable market demand. Diethanol monoisopropanolamine has gradually replaced triethanolamine and triisopropanolamine in grinding aid raw materials due to its many excellent characteristics. Moreover, more critically, diethanol monoisopropanolamine is a green and environmentally friendly new grinding aid raw material, which has an excellent grinding aid effect. It has good compatibility with triethanolamine, triisopropanolamine and other alcohols, amines and lipids. It can be used alone or in combination with other substances when making...

Claims

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Application Information

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IPC IPC(8): C07C215/12C07C213/04
Inventor 张远军邓勇林贾斌谭富兵姚江
Owner NINGBO YUANLI CHEM
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