Ethyl acetate continuous esterification apparatus

Abstract

The invention belongs to the field of chemosynthesis apparatuses and more particularly relates to an ethyl acetate continuous esterification apparatus. The apparatus is formed by sequentially connecting a raw material mixer 1, a preheater 2, an esterification column 3, a separating column 4, a proportioning mixer 5, a decanter 7 and a drying column 6 through a pipeline, wherein the bottom of the raw material mixer 1 is connected with the middle part of the esterification column 3 through the preheater 2; the top of the esterification column 3 is connected with the middle part of the separating column 4 through the decanter 7; the top of the separating column 4 is connected with the top of the proportioning mixer 5; the bottom of the proportioning mixer 5 is connected with the middle part of the drying column 6 through the decanter 7. The apparatus disclosed by the invention is used for a continuous reaction for preparing ethyl acetate, the product conversion rate can be increased to 93% to 99%, the energy consumption is greatly reduced, and the performance indexes of the ethyl acetate product are improved.

Description

technical field [0001] The invention belongs to the field of chemical synthesis equipment, in particular to ethyl acetate continuous esterification equipment. Background technique [0002] Ethyl acetate (ethylacetat), also known as ethyl acetate, is a colorless and transparent liquid with a fruity aroma. It is one of the most widely used fatty acid esters. It has excellent solubility and is a volatile, highly soluble Good industrial solvent. It is widely used in chemical, food, pharmaceutical, textile and automobile industries, [0003] At present, the main production methods of industrial ethyl acetate in the world are as follows: acetate esterification method, acetaldehyde condensation method, ethylene addition method and ethanol dehydrogenation method. However, the current esterification method is relatively mature and reliable, and the production cost is relatively low. However, the mixed acid formed by the catalyst and acetic acid severely corrodes the equipment, so t...

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Problems solved by technology

[0004] The present invention improves the conversion rate of ethanol, acetic acid and other reactants by studying the continuous esterification technology and process, and improves the product quality and yield. Corrosion, high energy consumption and other defects, provide a continuous esterification equipment for ethyl acetate, reduce the operation intensity of subsequent separation and concentration, refining, low vinegar recovery, waste water recovery and other processes

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