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A modified propanolamine production device and production method thereof

A production method and production device technology, applied in the field of modified propanolamine production devices, can solve problems such as unreasonable energy utilization, achieve the effects of shortening production time, accelerating cooling, and overcoming difficulties in product transportation

Active Publication Date: 2021-03-19
安徽海螺材料科技股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent is to add water before the propylene oxide is added dropwise, which will easily cause the reaction of propylene oxide and water to generate impurities. In addition, the reaction between monoethanolamine and propylene oxide is an exothermic reaction, but this patent does not Steam heating is also required, and the utilization of energy is very unreasonable

Method used

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  • A modified propanolamine production device and production method thereof
  • A modified propanolamine production device and production method thereof
  • A modified propanolamine production device and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Pump 7515kg of monoethanolamine (99.87%) into the reaction kettle 2, start the vacuum pump 15, and pump the pressure in the reaction device to -0.042MPa. Nitrogen (99.9%, the same below) was charged to make the internal pressure of the reaction device reach 0.101 MPa, and the internal pressure of the reaction device was evacuated to -0.042 MPa again. Start mixer 1 and external circulation pump 19, begin to pump into 14461kg propylene oxide (99.99%), treat that the temperature in the device rises to 80 ℃, open circulating cooling water pump 28, adjust the opening degree of the ninth valve 29 and the tenth valve 30 and The pumping flow of propylene oxide controls the temperature in the system to maintain between 80°C and 85°C, and the pressure is less than 0.15MPa. After 213 minutes, the pumping of propylene oxide was completed. At this time, the temperature inside the device was 83°C and the pressure was 0.105MPa. Turn off the circulating cooling water pump 28 when the ...

Embodiment 2

[0051] Pump 7559kg of monoethanolamine (99.87%) into the reaction kettle 2, start the vacuum pump 15, and pump the pressure in the reaction device to -0.058MPa. Nitrogen (99.9%, the same below) was charged to make the pressure inside the reaction device reach 0.107MPa, and the pressure inside the reaction sub-device was evacuated to -0.058MPa again. Start mixer 1 and external circulation pump 19, begin to pump into 14486kg propylene oxide (99.99%), treat that the temperature in the device rises to 85 ℃, open circulating cooling water pump 28, adjust the opening of the ninth valve 29 and the tenth valve 30 and The pumping flow of propylene oxide controls the temperature in the system to maintain between 85°C and 90°C, and the pressure is less than 0.15MPa. After 188 minutes, the pumping of propylene oxide was completed. At this time, the temperature inside the device was 89°C and the pressure was 0.123MPa. Close the circulating cooling water pump 28 when the temperature drops ...

Embodiment 3

[0053] Pump 6655kg of monoethanolamine (99.87%) into the reaction kettle 2, start the vacuum pump 15, and pump the internal pressure of the reaction sub-device to -0.077MPa. Nitrogen (99.9%, the same below) is charged to make the internal pressure of the reaction sub-device reach 0.102MPa, and the internal pressure of the reaction device is evacuated to -0.077MPa again. Start mixer 1 and external circulation pump 19, begin to pump into 14486kg propylene oxide (99.99%), treat that the temperature in the device rises to 90 DEG C, open circulating cooling water pump 28, adjust the opening degree of the ninth valve 29 and the tenth valve 30 and The pumping flow of propylene oxide controls the temperature in the system to maintain between 90°C and 100°C, and the pressure is less than 0.15MPa. After 175 minutes, the pumping of propylene oxide was completed. At this time, the temperature inside the device was 95°C and the pressure was 0.092MPa. Close the circulating cooling water pu...

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PUM

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Abstract

The invention relates to a production system and a production method of modified propanolamine. The production system is composed of a reaction system and a heat exchange system; the production methodadopts a manner that propylene oxide is added in a pump; a propylene oxide adding pipe orifice is formed in the bottom in a vessel; after leaving a feeding pipe orifice, the propylene oxide is in contact reaction with monoethanolamine immediately, so that the gasification quantity of the propylene oxide is greatly reduced; in the whole synthetic process, the pressure in the reaction system is always kept within 0.15 MPa, so that the potential safety hazards caused by excessive pressure are avoided; and the production system and the production method provided by the invention are safe, efficient, energy-saving and environmentally-friendly.

Description

technical field [0001] The invention relates to the field of chemical equipment, in particular to a modified propanolamine production device and a production method thereof. Background technique [0002] Modified propanolamine is monoethanol diisopropanolamine and its isomers, which is a very important industrial additive. In the existing patent, the feeding method of dripping propylene oxide is adopted, which is easy to gasify during the falling process of propylene oxide droplets, resulting in continuous high pressure in the reaction device during the entire synthesis process, which in turn brings safety hazards such as leakage and explosion. Hidden danger. [0003] The patent with the notification number CN103435499A discloses a novel preparation method of monoethanol diisopropanolamine, comprising the following steps: after weighing ethanolamine, propylene oxide and quality regulator (a quinone organic substance) according to the designed ratio, Add ethanolamine, mass ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C213/04C07C215/12
CPCC07C213/04C07C215/12Y02P20/10
Inventor 谭静进曾君彭炎兴索喜梅江元华张大康明金龙
Owner 安徽海螺材料科技股份有限公司
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