Manufacturing method of Ethylene Glycol Monoethyl Ether Acetate
Ethylene Glycol Monoethyl Ether Acetate (EGMEA) is an important raw material for the production of chemicals, which is widely used in the fields of coatings, inks, detergents, printing and dyeing auxiliaries and so on. This article will introduce the manufacturing method of Ethylene Glycol Ethyl Ether Acetate.
I. Manufacturing principle
Ethyl glycol ethyl ether is produced by esterification reaction between ethylene glycol and ethyl acetate under the action of acid catalyst. The reaction equation is as follows:
CH3COOC2H5 + HOCH2CH2OH → CH3COOCH2CH2OCH2CH3 + H2O
II. Manufacturing Steps
1. Ingredients
Ethylene glycol and ethyl acetate were added into a reactor according to a certain ratio, and an appropriate amount of acid catalyst was added at the same time.
2. Heating reaction
Turn on the heating device of the reaction kettle, control the reaction temperature within a certain range, so that ethylene glycol and ethyl acetate undergo esterification reaction.
3. Dewatering
During the reaction process, a certain amount of water will be produced, which needs to be discharged through the water separator in time to ensure the smooth progress of the reaction.
4. Post-treatment
After the reaction is finished, the reaction solution is subjected to post-treatment, including neutralization, washing, distillation and other operations, in order to obtain pure ethyl glycol ether ethyl ester product.
3. Precautions
1. Control the reaction temperature: too high or too low temperature will affect the reaction, need to strictly control the reaction temperature.
2. Timely drainage: the water generated by the reaction needs to be discharged in time to avoid affecting the reaction.
3. Safe operation: Attention to safety is needed in the manufacturing process to avoid leakage, fire and other safety accidents.
Four, application fields
Ethylene glycol ethyl ether ethyl ester, as an important raw material for the production of chemicals, has a wide range of applications in the field of coatings, inks, detergents, printing and dyeing auxiliaries and so on. At the same time, it can also be used as a solvent, reaction medium and so on.
In short, the manufacturing method of ethyl glycol ethyl ether is not complicated, but in the process of operation, it is necessary to pay attention to safety and strictly control the reaction conditions to ensure the quality and yield of the product.
