Method and device for separating high-purity longifolene

A longifolene and high-purity technology, applied in the field of turpentine deep processing, can solve the problems of high energy consumption, inability to fully utilize resources, and generate waste, and achieve the effects of easy tower kettle temperature, energy saving, and easy operation

Active Publication Date: 2015-11-18
GUANGXI FORESTRY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among the existing technologies for the development and utilization of heavy turpentine, batch distillation and removal of β-caryophyllene are mostly used to obtain a higher content of longifolene, which has the disadvantages of waste generation, high energy consumption, and inability to fully utilize resources

Method used

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  • Method and device for separating high-purity longifolene
  • Method and device for separating high-purity longifolene
  • Method and device for separating high-purity longifolene

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A device for separating high-purity longifolene, comprising a decolorization kettle 1, a filter 2, a raw material storage tank 3, a vacuum pump A4, a tail gas removal tank A5, a vacuum buffer tank A6, a rectification tower tank 7, a raffinate tank 8, Rectification column body 12 , condenser 13 and cooler 14 . The decolorizing kettle 1, the filter 2 and the raw material storage tank 3 are connected in sequence through pipelines, and the feed port of the raw material storage tank 3 is connected with the rectification tower kettle 7 through pipelines. The rectification tower kettle 7 is equipped with a heating system, and the rectification tower kettle The outlet of 7 is connected with rectifying tower body 12, and the top of rectifying tower body 12 is condenser 13, and cooler 14 is arranged below condenser 13; The top of rectifying tower body 12 is connected with vacuum buffer tank A5, exhaust The removal tank A6 and the vacuum pump A4 are connected successively; the raf...

Embodiment 2

[0039]The method for separating high-purity longifolene using the device described in Example 1 is to use a vacuum pump A4 to discharge the air in the rectification tower body 12 to make the vacuum degree in the rectification tower body 12 ≤ -0.09MPa. Using negative pressure, the heavy turpentine is transported from the raw material storage tank 3 to the still 7 of the rectification tower. Before extracting longifolene, heavy turpentine is preheated to 55-60°C in the raw material storage tank. Open the heating electric tube 191 in the heating system to heat up the temperature and heat the raw material in the rectification tower still 7, and open the water inlet valve of the condenser 13 and the cooler 14 on the top of the rectification tower body 12 at the same time. The temperature of the rectification tower bottom 7 is kept at 120-130°C, the temperature of the rectification tower body 12 is kept at 100-110°C, and the total reflux is 0.5-1.5h, and the reflux ratio is 6:1, and...

Embodiment 3

[0041] The method for separating high-purity longifolene using the device described in Example 1 is to use a vacuum pump A4 to discharge the air in the rectification tower body 12 to make the vacuum degree in the rectification tower body 12 ≤ -0.09MPa. Using negative pressure, the heavy turpentine is transported from the raw material storage tank 3 to the still 7 of the rectification tower. Before extracting longifolene, heavy turpentine is preheated to 55-60°C in the raw material storage tank. Open the heating electric tube 191 in the heating system to heat up the temperature and heat the raw material in the rectification tower still 7, and open the water inlet valve of the condenser 13 and the cooler 14 on the top of the rectification tower body 12 at the same time. The temperature of the rectification tower bottom 7 is kept at 140-150°C, the temperature of the rectification tower body 12 is kept at 100-110°C, and the total reflux is 0.5-1.0h, and the reflux ratio is 8:1, an...

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Abstract

The invention discloses a method and a device for separating high-purity longifolene. Thermal pretreatment is carried out on heavy turpentine, continues operation of reduced pressure distillation of a rectifying tower is realized through discharging of pressure difference between a tower kettle and a residual liquid tank, the rectifying tower does not need to be cooled and elimination of vacuum discharging is not needed after the fractionation of once feeding is completed, the vacuum of the residual liquid tank is reduced to be lower than or equal to the vacuum of the tower kettle through a vacuum pump, residual liquid in the tower kettle is discharged to the residual liquid tank through the pressure difference between the tower kettle and the residual liquid tank, and then raw materials are absorbed in the tower kettle by utilizing negative pressure between the tower kettle and a raw material storage tank, so that seamless cyclic operation of the working procedures such as feeding, fractionation and discharging is realized, and the energy sources are saved. The content of longifolene in longifolene products obtained by the method is greater than 98%.

Description

technical field [0001] The invention relates to the technical field of pine resin deep processing, in particular to a method and device for separating high-purity longifolene. Background technique [0002] Heavy turpentine is the main by-product of the production of rosin and turpentine from turpentine, which accounts for about 20-30% of the output of turpentine. The annual output of heavy turpentine in my country is about 10,000 tons, which mainly contains α-pinene, β-pinene, limonene, longifolene, caryophyllene, cedrene, α-santalene, etc. The content of each component varies with the place of origin However, the content of α-pinene is about 6%, the content of longifolene is 13.9-67.4%, and the content of caryophyllene is 0.6-17.9%. Among the high-grade turpentine oil produced by the turpentine factory, α-pinene and β-pinene account for more than 93%, and the price is high and easy to sell; while the heavy turpentine oil whose main components are sesquiterpene hydrocarbons ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C13/605C07C7/00C07C7/04
Inventor 陆顺忠李秋庭关继华吴建文
Owner GUANGXI FORESTRY RES INST
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