Method for extracting limonene from rosin

A technology of limonene and turpentine, applied in chemical instruments and methods, purification/separation of hydrocarbons, organic chemistry, etc., to achieve the effect of facilitating filtration, high purity and good quality

Pending Publication Date: 2020-09-01
GUANGXI FORESTRY RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at existing problems, the present invention provides a method for extracting limonene from pine resin, so as to obtain high-purity, low-impurity, high-quality limonene products

Method used

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  • Method for extracting limonene from rosin
  • Method for extracting limonene from rosin

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A method for extracting limonene from pine resin, comprising the following steps:

[0026] (1) Pass the turpentine through the sieve plate after being crushed. The sieve hole specification of the sieve plate is 10mm in length and 0.1mm in width. Then, turpentine with 15% turpentine quality and 8% turpentine with turpentine quality are successively added to the crushed turpentine. Clear water, then add pure phosphoric acid with 0.05% turpentine quality and mix, then directly pass into steam and heat to 90°C and keep the temperature until the rosin is completely melted to obtain turpentine liquid; the rosin can be selected from Guangxi Gaozhi Songyouzhu. The main components of purified turpentine are ①α-pinene 54.5-69.07%; ②β-pinene 4.25-7.7%; ③camphene 1.24-1.49%; ④limonene 21.53-35.6%;

[0027] (2) Filter the turpentine resin liquid obtained in step (1), then send it to a water washer for washing treatment, and then let it stand for clarification for 15 hours to obtain ...

Embodiment 2

[0032] A method for extracting limonene from pine resin, comprising the following steps:

[0033] (1) Pass the turpentine through the sieve plate after being crushed. The sieve hole specification of the sieve plate is 12mm long and 0.3mm wide, and then add turpentine with 25% turpentine mass and 9% clear water with turpentine mass to the crushed turpentine , then add pure phosphoric acid with 0.07% turpentine quality and mix, then directly pass into steam and heat to 93°C and keep the temperature until the rosin is completely melted to obtain turpentine liquid; the rosin can be selected from Guangxi Gaozhi Songyouzhu. The main components of the processed turpentine are ① α-pinene 54.5-69.07%; ② β-pinene 4.25-7.7%; ③ camphene 1.24-1.49%; ④ limonene 21.53-35.6%;

[0034] (2) Filter the turpentine resin liquid obtained in step (1), then send it to a water washer for washing treatment, and then let it stand for clarification for 10 hours to obtain a clarified resin liquid; 15%, t...

Embodiment 3

[0039] A method for extracting limonene from pine resin, comprising the following steps:

[0040] (1) Pass the turpentine through the sieve plate after being crushed. The sieve hole specification of the sieve plate is 15mm long and 0.2mm wide, and then add turpentine with 20% turpentine mass and clear water with 10% turpentine mass to the crushed turpentine , then add pure phosphoric acid with 0.1% turpentine quality and mix, then directly pass into steam and heat to 95°C and keep the temperature until the rosin completely melts to obtain turpentine resin liquid; the rosin can be selected from Guangxi Gaozhi Songyouzhu. The main components of the processed turpentine are ① α-pinene 54.5-69.07%; ② β-pinene 4.25-7.7%; ③ camphene 1.24-1.49%; ④ limonene 21.53-35.6%;

[0041] (2) Filter the turpentine resin liquid obtained in step (1), then send it to a water washer for washing treatment, and then let it stand for clarification for 20 hours to obtain a clarified resin liquid; 15%,...

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Abstract

The invention discloses a method for extracting limonene from turpentine, which comprises the following steps: (1) crushing turpentine, sequentially adding turpentine and clear water into the crushedturpentine, adding pure phosphoric acid, mixing, directly introducing steam, and heating until the turpentine is completely molten to obtain a turpentine liquid; (2) filtering the turpentine liquid, washing with water, and standing for clarification to obtain clarified turpentine liquid; (3) adding edible activated carbon into the clarified fat liquid, heating to 85-95 DEG C, stirring for 1-3 hours at a constant temperature, and filtering to obtain a purified fat liquid; (4) putting the purified grease liquid under the vacuum degree of 55-40kPa, directly introducing steam for distillation, andcondensing and cooling to obtain turpentine; and (5) conveying the turpentine into a rectifying tower for fractionation to obtain a limonene product. Through the method, the high-purity, low-impurityand high-quality limonene product can be obtained.

Description

technical field [0001] The invention belongs to the technical field of natural fragrance preparation, and in particular relates to a method for extracting limonene from pine resin. Background technique [0002] Limonene, also known as limonene, is a monoterpenoid compound, which is orange-red, orange-yellow or colorless clear liquid. It is a famous essential oil in orange peel and has a fragrance similar to lemon. There are three isomers of limonene, which are d-limonene, l-limonene and dl-limonene. Limonene is widely found in natural plant essential oils, mainly containing D-limonene contains mandarin oil, lemon oil, orange oil, camphor white oil, etc., L-limonene-containing peppermint oil, etc., racemic limonene-containing neroli oil, cedar oil, and camphor white oil. Animal experiments have shown that limonene has good antitussive, expectorant, and antibacterial effects. Current research also points out that limonene has anti-tumor effects. Compound limonene can be used...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C13/21C07C7/04C07C7/00C07C7/12
CPCC07C7/04C07C7/005C07C7/00C07C7/12C07C13/21
Inventor 吴建文陆顺忠陆葆荣邱米关继华黎贵卿杨素华汤星月
Owner GUANGXI FORESTRY RES INST
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