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Method for extracting cunninghamia lanceolata essential oil by utilization of cunninghamia lanceolata three remains

A technology of three residues and Chinese fir, which is applied in the field of extraction of Chinese fir essential oil, can solve the problems of a large number of solvents, complex processing, and affecting the quality of Chinese fir essential oil, and achieve the effects of improving oil yield and protecting the environment and forest resources

Active Publication Date: 2015-12-23
FUJIAN XINLYULIN PROD DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The oil yield of Chinese fir essential oil extracted by solvent extraction is higher than that of steam distillation, but it requires a large amount of solvent, the follow-up treatment is complicated, and there are problems of high energy consumption and solvent residue.
The oil yield of Chinese fir essential oil extracted by dry distillation method is high, but the obtained essential oil contains a large amount of tar, phenol, aldehyde and ketone, etc., which seriously affects the quality of Chinese fir essential oil.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Utilize the method for extracting Chinese fir essential oil from three leftovers of Chinese fir, the specific steps are as follows:

[0015] ①Crush the three leftovers of Chinese fir into fir powder of 10-100 mesh;

[0016] ②Put Chinese fir powder into a mixing barrel with a stirrer, add edible alkali and industrial salt to the Chinese fir powder and stir and mix. 3 parts, 2 parts of industrial salt;

[0017] ③Put the mixed fir powder into the distillation tower, and pass into the distillation tower with water vapor at a temperature of 240°C to 260°C for distillation, and the distillation time is 10 hours;

[0018] ④The mixed gas discharged after distillation is transported to the cooling tower for cooling through pipelines. The temperature of the cooling water is controlled below 60°C, and the oil-water mixed liquid is obtained after cooling;

[0019] ⑤ After the oil-water mixture liquid is separated from oil and water, Chinese fir essential oil is obtained.

[0020...

Embodiment 2

[0022] Utilize the method for extracting Chinese fir essential oil from three leftovers of Chinese fir, the specific steps are as follows:

[0023] ①Crush the three leftovers of Chinese fir into fir powder of 10-100 mesh;

[0024] ②Put Chinese fir powder into a mixing barrel with a stirrer, add edible alkali and industrial salt to the Chinese fir powder and stir and mix. 2.5 parts, 1.8 parts of industrial salt;

[0025] ③Put the mixed fir powder into the distillation tower, and feed water vapor with a temperature of 240°C to 260°C into the distillation tower for distillation, and the distillation time is 9 hours;

[0026] ④The mixed gas discharged after distillation is transported to the cooling tower for cooling through pipelines. The temperature of the cooling water is controlled below 60°C, and the oil-water mixed liquid is obtained after cooling;

[0027] ⑤ After the oil-water mixture liquid is separated from oil and water, Chinese fir essential oil is obtained.

[0028...

Embodiment 3

[0030] Utilize the method for extracting Chinese fir essential oil from three leftovers of Chinese fir, the specific steps are as follows:

[0031] ①Crush the three leftovers of Chinese fir into fir powder of 10-100 mesh;

[0032] ②Put Chinese fir powder into a mixing barrel with a stirrer, add edible alkali and industrial salt to the Chinese fir powder and stir and mix. 3.5 parts, 2.2 parts of industrial salt;

[0033] ③Put the mixed fir powder into the distillation tower, and pass into the distillation tower with water vapor at a temperature of 240°C to 260°C for distillation, and the distillation time is 11 hours;

[0034] ④The mixed gas discharged after distillation is transported to the cooling tower for cooling through pipelines. The temperature of the cooling water is controlled below 60°C, and the oil-water mixed liquid is obtained after cooling;

[0035] ⑤ After the oil-water mixture liquid is separated from oil and water, Chinese fir essential oil is obtained.

[...

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PUM

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Abstract

The invention provides a method for extracting cunninghamia lanceolata essential oil by utilization of cunninghamia lanceolata three remains. The method concretely comprises the following steps: firstly, cunninghamia lanceolata three remains are processed into cunninghamia lanceolata powder; secondly, cunninghamia lanceolata powder is sent to a mixing barrel with a stirrer, dietary alkali and industrial salt are added in the cunninghamia lanceolata powder, stirring and mixing are carried out, and the weight ratio of cunninghamia lanceolata powder, dietary alkali and industrial salt is 750: 2.5-3.5:1.8-2.2; thirdly, the cunninghamia lanceolata powder after mixing is sent to a distillation column, vapor with a temperature of 240-260 DEG C is inputted into the distillation column, distillation is carried out for 9-11 hours; fourthly, discharged mixed gases after distillation are conveyed to a cooling tower through a pipe, cooling is carried out, the cooling water temperature is controlled under 60 DEG C, and an oil-water mixed liquid is obtained after cooling; fifthly, the oil-water mixed liquid is subjected to oil and water separation, and cunninghamia lanceolata essential oil is obtained. The method can raise the oil yield of cunninghamia lanceolata essential oil and contents of cedrol and cedrene in cunninghamia lanceolata essential oil effectively.

Description

technical field [0001] The invention relates to the technical field of extracting Chinese fir essential oil, in particular to a method for extracting Chinese fir essential oil by using three residues of Chinese fir. Background technique [0002] Chinese fir is the most important tree species for afforestation in southern my country. There are a lot of leftovers such as tree stumps, roots and fir chips produced by processing every year. Most of these three leftovers are not well utilized or left in the forest Let it rot, or use it as a low value-added utilization such as fuel burning, resulting in a serious waste of resources. Because Chinese fir contains a large amount of Chinese fir essential oil, its main components are cedrene, cedrene, etc., which can be used in the perfume industry. At present, the extraction and processing of fir essential oil mainly use steam distillation, solvent extraction and dry distillation. The quality of Chinese fir essential oil extracted by ...

Claims

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Application Information

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IPC IPC(8): C11B9/02
Inventor 徐正忠
Owner FUJIAN XINLYULIN PROD DEV
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