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A kind of purification method of myrcene

A purification method and myrcene technology, applied in the field of chemical separation, can solve the problems of difficult purification and low product purity, and achieve the effects of high purity, high yield and low requirements

Active Publication Date: 2021-01-29
福建桦智工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to propose a method for purifying myrcene in view of the problems of low purity and difficult purification of the product obtained in the existing myrcene production process

Method used

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  • A kind of purification method of myrcene
  • A kind of purification method of myrcene

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment

[0025] A method for purifying myrcene, comprising the steps of:

[0026] The raw material to be purified comes from the raw material tank area. After the flow rate is corrected, it is continuously passed into the first rectification tower, and a polymerization inhibitor is added to the tower at the same time; the main task of the first rectification tower is to remove light components at the top of the tower. Then the materials in the tower bottom are obtained in the bottom of the tower, and the materials in the top bottom are transported by pumps in the bottom of the tower, part of them are sent to the heater for circulation heating, and part (the first mixture) enters the second rectification tower. The raw materials are fed from the middle of the tower section, and the falling film reboiler is used in the tower kettle to heat the materials. The top of the tower adopts the internal reflux method, and after being condensed by 7°C chilled water, part of the light components ar...

no. 2 Embodiment

[0031] The difference between this example and the first example is that the mass fraction of myrcene in the raw material to be purified is 70%.

no. 3 Embodiment

[0033] The difference between this embodiment and the first embodiment is that the reboilers used in the bottoms of the first rectification tower and the second rectification tower are wiped film reboilers.

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Abstract

The invention discloses a method for purifying myrcene. The method adopts two-tower continuous vacuum distillation to purify myrcene raw material. Light components are removed from the top of the light-removing rectification tower, and the liquid in the bottom of the tower enters the second rectification tower to obtain the myrcene product at the top of the tower. This method can obtain myrcene products with a purity >90%, and the overall yield of myrcene can reach up to more than 95%. At the same time, it solves the current problems of difficult myrcene purification, low product purity, many subsequent side reactions, and complicated separation.

Description

technical field [0001] The invention belongs to the technical field of chemical separation, and in particular relates to a method for purifying myrcene. Background technique [0002] Myrcene has a pleasant sweet balsamic smell, and is an important chemical raw material and intermediate in the fragrance industry. Vitamins, insect repellants, anti-tumor active substances and other important raw materials in the pharmaceutical industry. [0003] Natural myrcene can be extracted from plant essential oils such as verbena, bay leaf, bay leaf and mastic gum oil, but because the content of myrcene in natural essential oils is low, and natural essential oils are restricted by factors such as seasons and climates, making them The harvested output and quality are not stable, and have been unable to meet market demand; however, myrcene products can be obtained industrially by extracting β-pinene in turpentine oil and post-cracking. It is widely used; it has also been reported that myr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C7/00C07C7/04C07C7/20C07C11/21
CPCC07C7/005C07C7/04C07C7/20C07C11/21
Inventor 郑辉东陈晶晶曾燕茹吴乃昕
Owner 福建桦智工程技术有限公司
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