A kind of acetic acid mixer structure

Abstract

An acetic acid mixer structure belongs to the field of chemical processing equipment. The present invention comprises a mixer, the upper end of the mixer is provided with a first feeding pipeline for 80% acetic acid feeding and a second feeding pipeline for 99% glacial acetic acid feeding; the lower end is provided with an acetic acid outlet The feed pipe is characterized in that: the outside of the first feed pipe is provided with a heat insulating layer, and the outside of the second feed pipe is provided with a temperature insulating layer to keep the temperature of the material in the second feed pipe constant at Insulation layer above 16°C. The invention provides an acetic acid mixer structure, which controls the shape of the material in the feeding pipe by setting an insulating layer and a temperature insulating layer, so as to ensure sufficient mixing and reduce the error of mixing ratio.

Description

technical field [0001] The invention belongs to the field of chemical processing equipment, in particular to an acetic acid mixer structure. Background technique [0002] In the existing process for preparing acetylacetone, it is necessary to use a process step in which 80% acetic acid and 99% glacial acetic acid are mixed, but in this step, the concentration of 99% glacial acetic acid at ambient temperature is When it is below 14°C, it is usually solid and has poor fluidity, while acetic acid with a concentration of 80% is usually in a liquid state. If the ambient temperature is too low, it will also appear in a certain crystallization state, which makes it difficult to control the temperature of the substance itself in the process. If it is not good, there will be a mixture of solid substances and solid substances, which makes the reaction incomplete and affects the normal progress of the process; at the same time, the fluidity of liquid acetic acid is better than that of ...

AI Technical Summary

Problems solved by technology

[0002] In the existing process for preparing acetylacetone, it is necessary to use a process step in which 80% acetic acid and 99% glacial acetic acid are mixed, but in this step, the concentration of 99% glacial acetic acid at ambient temperature is When it is below 14°C, it is usually solid and has poor fluidity, while acetic acid with a concentration of 80% is usually in a liquid state. If the ambient temperature is too low, it will also appear in a certain crystallization state, which makes it difficult to control the temperature of the substance itself in the process. If it is not good, there will be a mixture of solid substances and solid substances, which makes the reaction incomplete and affects the normal progress of the process; at the same time, the fluidity of liquid acetic acid is better than that of glacial acetic acid, so if it is directly mixed with the same caliber pipe, it will also cause The ratio cannot be reasonably controlled, and there is a deviation from the predetermined value, which will also affect the normal progress of the process

Images