Equipment and production process for producing camphor by continuous gas phase dehydrogenation of isoborneol

Abstract

The invention relates to a device for producing camphor through continuous gas-phase dehydrogenation of isoborneol, comprising a feeding pump, a vaporizer, a heat-exchanging radial flow dehydrogenation reactor, a continuous rectification tower, a sublimation kettle and a desublimation chamber; The feed pump is connected to a liquid storage tank containing the hydrolyzed isoborneol organic solvent solution, and a first control valve is provided on the connecting pipeline between the feed pump and the liquid storage tank. This invention overcomes the shortcomings of the existing isoborneol continuous dehydrogenation method that when the liquid phase enters the fixed bed reactor to prepare camphor, it may cause erosion of the catalyst and affect the service life of the catalyst. It performs dehydrogenation reaction by vaporizing the isoborneol raw material and especially A heat-exchanging radial flow dehydrogenation reactor adapted to it is designed, which has the advantages of continuous production, little impact on the service life of the catalyst, more reasonable distribution of reaction materials, and can greatly improve the production efficiency of the catalyst.

Description

technical field [0001] The invention relates to equipment and a production process for preparing camphor through continuous gas-phase dehydrogenation of isoborneol, which is applied in the field of camphor preparation. Background technique [0002] Camphor is a white crystalline powder with a strong cooling sensation and aromatic smell. It is widely used as pharmaceutical intermediates, environment-friendly anti-moth agents, spices, incense, and industrial raw materials. [0003] Camphor is divided into natural camphor and synthetic camphor, wherein natural camphor is far from meeting the market demand due to lack of resources and small output. Therefore, the process of synthesizing camphor with turpentine as raw material has been greatly developed. The synthesis of camphor takes turpentine as the starting material, and obtains isoborneol through isomerization, esterification and hydrolysis, and then dehydrogenates the isoborneol to finally obtain camphor. At present, ther...

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Problems solved by technology

[0005] In order to overcome the shortcomings of the existing isoborneol continuous dehydrogenation method for preparing camphor when the liquid phase enters the fixed bed reactor, which may cause erosion of the catalyst and affect the service life of the catalyst, the invention provides a method for preparing camphor by continuous gas phase dehydrogenation of isoborneol Equipment and production process, it conducts dehydrogenation reaction by vaporizing isoborneol raw material and specially designs a heat-exchanging radial flow dehydrogenation reactor suitable for it, which can carry out continuous production, has little impact on the service life of the catalyst, and reacts The material is more reasonably distributed, which can greatly improve the production efficiency of the catalyst.

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