Cracking apparatus for producing myrcene by cracking Beta-pinene

A cracking device and myrcene technology, applied in chemical/physical/physical chemical nozzle reactors, organic chemistry, chemical instruments and methods, etc., can solve problems such as increased cracking time, reduced product yield, and unstable myrcene , to achieve the effect of uniform heating of the gas, reducing the generation of by-products, and improving the yield and purity

Pending Publication Date: 2017-03-22
GUANGXI FORESTRY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If simply increasing the cracking time of raw material gas β-pinene in the cracking device, it will make myrcene unstable under high temperature cracking conditions, and at the same time, the side reactions will be intensified, and the product yield will be reduced

Method used

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  • Cracking apparatus for producing myrcene by cracking Beta-pinene
  • Cracking apparatus for producing myrcene by cracking Beta-pinene
  • Cracking apparatus for producing myrcene by cracking Beta-pinene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] as attached figure 1 Shown, the cracking device of described β-pinene cracking and producing myrcene comprises cracking device housing 2, cracking pipe 6, inlet pipe 1, air outlet pipe 8 and jet device 3, in one end of described cracking device housing 2 Gas injection device 3 is set, and described inlet pipe 1 is connected with gas injection device 3, and the gas injection hole 33 of gas injection device 3 shoots to the other end in cracking device housing 2, and the other end of cracking device shell 2 is provided with air outlet pipe 8; The other end of the cracking device housing 2 is provided with a shaft support 7, and the cracking tube 6 is arranged in the cracking device housing 2, and is fixed on the fixed shaft 4 by the tube bracket 5, and the cracking tube 6 is provided with 16 groups, Each group is 8 cracking tubes of mutual concentric circle structure; the surface of cracking tube 6 is provided with catalyst layer;

[0024] Said air injection device 5 comp...

Embodiment 2

[0027] Cracking tube 6 is provided with 10 groups in this device, and each group is 10 cracking tubes of mutual concentric circle structure, and all the other features are identical with embodiment 1. After being cracked by this device, the yield of myrcene is ≥96.25%, and the purity is ≥97.09%.

Embodiment 3

[0029] Cracking tube 6 is provided with 20 groups in this device, and each group is 4 cracking tubes of mutual concentric circle structure, and all the other features are identical with embodiment 1. After being cracked by this device, the yield of myrcene is ≥92.13%, and the purity is ≥96.57%.

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Abstract

The invention discloses a cracking apparatus for producing myrcene by cracking Beta-pinene; the cracking apparatus comprises cracking apparatus housing (2), a plurality of groups of cracking pipe (6), intake pipe (1), exhaust pipe (8) and jetting device (3); one end of the cracking apparatus housing (2) is internally provided with the jetting device (3), the intake pipe (1) is connected to the jetting device (3), the other end of the cracking apparatus housing (2) is externally provided with the exhaust pipe (8), and each group of cracking pipes (6) includes a plurality of cracking pipes mutually concentric; the surface of each cracking pipe (6) is provided with a catalyst layer. The cracking apparatus can provide increased specific surface area for the cracking pipes, facilitates full contact of Beta-pinene gas with the catalyst on the surface of the cracking pipes to allow cracking, and accordingly provides increased yield and purity of finished myrcene; the cracking apparatus also has the advantages of low energy consumption, low cost, high production efficiency, simple structure and the like, and facilitates industrial production.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, in particular to a cracking device for producing myrcene by cracking β-pinene. Background technique [0002] β-pinene is one of the main products of turpentine separation. Now the world consumes about 20,000 tons of terpene synthetic fragrances every year, most of which are medium and high-grade synthetic fragrances. Most of the fragrances synthesized by β-pinene are synthesized through the intermediate myrcene, such as citrus aldehyde, neoliral, cycloalkene nitrile, syringol, syringyl ether, lingantalactone and ambergris compounds etc. [0003] Myrcene, also known as myrcene, has a pleasant sweet balsamic smell and can be used directly as a fragrance. There are two conjugated double bonds and one single double bond in the myrcene molecule. It is chemically active and is one of the most important chemical raw materials and intermediates in the fragrance industry, such as synthetic mint, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C5/31C07C11/21B01J8/06B01J19/26
CPCB01J8/06B01J19/26C07C5/31B01J2208/00902C07C11/21
Inventor 黎贵卿陆顺忠谢刚关继华李秋庭江燕
Owner GUANGXI FORESTRY RES INST
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