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Method for producing alpha-pinene from turpentine

A technology for turpentine and pinene, which is applied in the field of preparing alpha-pinene from turpentine, can solve the problems of waste of turpentine and the inability to fractionate other components at the same time, and achieves the advantages of reducing energy consumption, improving product value, improving production capacity and production value. Effect

Active Publication Date: 2014-01-08
YUNNAN LINYUAN SPICES
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Problems solved by technology

Moreover, only α-pinene in turpentine can be separated, resulting in waste of turpentine, and it is impossible to fractionate other components at the same time

Method used

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  • Method for producing alpha-pinene from turpentine
  • Method for producing alpha-pinene from turpentine

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Such as figure 1 Shown, the preparation method that turpentine produces α-pinene adopts following process to carry out:

[0023] ①Feeding: transport turpentine oil to the fractionation tower kettle through pipelines, and the input amount is 5.0-6.0 tons;

[0024] ②Vacuumize: After feeding, vacuumize the reactor of the fractionation tower until the air pressure in the tower reaches -0.075MPa;

[0025] ③Front distillation: pass steam, heat the material in the kettle to above 95°C, while keeping the temperature at the top of the tower ≤ 50°C, and the temperature in the tower at 70-80°C; observe the outlet pipe at the top of the tower, and there is water-containing α-pinene distilled out Finally, control the discharge rate at 50L / h, and use this water-containing α-pinene as the fore run, and temporarily store it in the receiver tank;

[0026] ④ Re...

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Abstract

The invention relates to the field of chemical processing, particularly a method for producing alpha-pinene from turpentine. The method comprises the following steps: (1) feeding; (2) vacuumizing; (3) predistilling; (4) refluxing; (5) distilling off alpha-pinene; (6) carrying out repeated distillation; (7) distilling off beta-pinene; (8) distilling off bipentene; and (9) collecting heavy oil. The preparation method has the advantages of higher production stability and higher reaction safety, and can effectively separate the alpha-pinene, beta-pinene, bipentene and heavy oil from turpentine.

Description

technical field [0001] The invention relates to the field of chemical processing, in particular to a preparation method for producing α-pinene from turpentine. Background technique [0002] Turpentine is made from pine trees rich in turpentine, and the volatile and aromatic terpene mixture obtained through different processing methods is called turpentine. The composition of turpentine varies with the tree species, tree age and origin. The premium and first-grade turpentine processed with masson pine turpentine is mainly composed of α-pinene, followed by β-pinene and limonene. There are also small amounts of sesquiterpenes, namely longifolene and caryophyllene. α-pinene is the raw material for the synthesis of borneol, camphor, terpineol, dihydromyrcenol and other fragrance products, and is one of the main components of turpentine. [0003] For example, the method for extracting α-pinene in a kind of rosin distillation process whose application number is 200910218278.5, th...

Claims

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Application Information

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IPC IPC(8): C07C7/04C07C13/42C07C13/40C07C13/21C10L1/04
Inventor 张黎伟曾类文张黎明普国文张文俊
Owner YUNNAN LINYUAN SPICES
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