Continuous hydrolyzing device

Abstract

The invention provides a continuous hydrolyzing device. The continuous hydrolyzing device comprises a reboiler, a rectifying tower and a condenser. A catalyzing section is arranged in the rectifying tower and provided with a sold acid catalyst, a material feeding port is formed in the catalyzing section on the rectifying tower, the reboiler is communicated to the catalyzing section, and the condenser is communicated to the top of the rectifying tower. The continuous hydrolyzing device has the advantages of being capable of carrying out continuous reactions, small in occupied area, short in hydrolyzing time, capable of reducing energy consumption and reducing potential safety hazards and the like.

Description

technical field [0001] The invention relates to a hydrolysis device, in particular to a continuous hydrolysis device of isopropyl cyclopropanate. Background technique [0002] In the existing cyclopropanic acid production process, there is a step in which isopropyl cyclopropanate is hydrolyzed under the catalysis of 40% sulfuric acid to produce cyclopropanic acid. This method can effectively complete the hydrolysis of isopropyl cyclopropanate, and No waste salts are produced (compared to alkaline hydrolysis). What prior art adopts is to add rectifying tower in 5000L hydrolysis reactor, collects the isopropanol that generates while hydrolyzing, thereby makes chemical equilibrium carry out more thoroughly, but this method also has some weak points, and concrete problem is as follows: [0003] (1) Because sulfuric acid solution and isopropyl cyclopropanate are two reactions in the hydrolysis process, the mass transfer effect of the catalyst is poor, so that the single batch of...

AI Technical Summary

Problems solved by technology

[0003] (1) Because sulfuric acid solution and isopropyl cyclopropanate are two reactions in the hydrolysis process, the mass transfer effect of the catalyst is poor, so that the single batch of hydrolysis time reaches more than 80 hours;

[0004] (2) The hydrolysis reaction kettle is 5000L, and the sulfuric acid acid mixing kettle is also 5000L, which occupies a large area and greatly reduces the utilization rate of the workshop;

[0005] (3) Because in the process of acid preparation of concentrated sulfuric acid, a large amount of heat is released, and sulfuric acid itself has strong corrosiveness, these are all potential safety hazards in the process operation process;

[0006] (4) After a single batch of hydrolysis, cooling and stratification are required, and a large amount of steam is consumed

Images