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Method for deironing and purifying oil of litsea cubeba

A technology of Radix chinensis oil and Radix chinensis, which is applied in the directions of essential oils/spices, fat production, etc., can solve the problems of mixing, unsatisfactory water content, user requirements, etc., and achieves pure aroma, low equipment requirements, and technology. simple effect

Inactive Publication Date: 2013-04-10
南昌洋浦天然香料香精有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the extraction process, due to limited conditions, litsea cubeba crude oil is often mixed with solid impurities such as broken branches and leaves, insects, iron, sediment, etc., and the water content does not meet the user's requirements.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Drive 2.5 tons of Litsea cubeba crude oil into a 4m 3 A vertical storage tank for sedimentation and removal of water impurities. Add 1.0 - 1.5% composite iron remover to the crude oil for stirring, and take a sample for inspection after 1-2 hours. If there is no iron in the crude oil, wash it twice with tap water, and then add 1.0‰ of baking soda for neutralization. , adjust the pH to about 7.0, and then wash 2 times with tap water. After washing, the sediment is drained, and then the high-speed oil-water separator is used for secondary dehydration, and the water content is controlled within 0.5%. The iron-removed oil dehydrated by the oil-water separator is sucked into the fractionation tower by vacuum, and dehydrated for the third time by low-temperature (35-40°C) vacuum method. The process is 3-4 hours, and the water is sampled and tested. finished product. Filtration, metering, packaging, storage.

Embodiment 2

[0026] Drive 3.0 tons of litsea cubeba crude oil into a 4.5m 3 A vertical storage tank for sedimentation and removal of water impurities. Add 0.5-1.0% composite iron remover to the crude oil and stir it. After 2-3 hours, take a sample for inspection. If there is no iron in the crude oil, wash it twice with tap water, and then add 0.5‰ of baking soda for neutralization. , adjust the pH to about 6.5-7.0, and then wash it twice with tap water. After washing, the sediment is drained, and then the high-speed oil-water separator is used for secondary dehydration, and the water content is controlled within 0.5%. The iron-removed oil dehydrated by the oil-water separator is sucked into the fractionation tower by vacuum, and dehydrated for the third time by low-temperature (35-40°C) vacuum method. The process is 4-5 hours, and the water is sampled and tested. After passing the test, it is finished product. Filtration, metering, packaging, storage.

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PUM

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Abstract

The invention relates to a method for deironing and purifying oil of litsea cubeba. The purification method comprises the following steps: stirring, crushing and mixing 110g of citric acid, gluconic acid, phthalic acid and sorbic acid according to a ratio of 11:4:4:1 to produce a multi-component compound iron remover; 2, adding the crude oil of litsea cubeba and the compound iron remover into a reaction vessel in a certain proportion, stirring the mixture at normal temperature for a while, when the de-ironed oil of the litsea cubeba is checked and judged that iron does not exist, cleaning the de-ironed oil of the litsea cubeba with water and then neutralizing the de-ironed oil of the litsea cubeba; 3, dehydrating the de-ironed oil of the litsea cubeba secondarily by an oil-water separator, wherein the water content is controlled to be within 0.5 percent; and 4, dehydrating the dehydrated de-ironed oil of the litsea cubeba thirdly by a low temperature vacuum fractionation method to obtain the refined de-ironed oil product of the litsea cubeba, wherein the water content cannot exceed 0.5 percent,. The method has the advantages of a simple process, lower equipment requirement, a mild treatment condition, low processing cost, low energy consumption, no hazard waste emission and particular suitability for large scale production; and the prepared de-ironed oil of the litsea cubeba has a light color and pure aroma, the pH value and the color are not changed under the normal circumstance of storage and transportation.

Description

technical field [0001] The invention relates to a method for purifying litsea cubeba oil, in particular to a method for removing iron and purifying litsea cubeba oil. Background technique [0002] Litsea cubeba oil is an important essential oil in the flavor and fragrance industry. It is obtained by steam distillation from the fruit of Litsea cubeba (Lour.) Pers.] (Lour.) Pers., a plant of the genus Litsea Cubeba (Lour.) Pers., with a yield of about 4%-6%. [0003] The appearance of litsea cubeba oil is light yellow to yellow clear liquid. Its aroma: fresh and sweet fruity aroma, with a sour lemon-like smell, not as good as lemongrass oil, strong but not long-lasting. [0004] Litsea cubeba, commonly known as Litsea cubeba, is a precious aromatic oil tree species, belonging to the deciduous small tree of the family Lauraceae. Generally 8-10 meters high, dioecious; flowers are yellow, umbels come out first, flower buds are formed in late summer and early autumn, and bloo...

Claims

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Application Information

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IPC IPC(8): C11B9/02
Inventor 梅家庆
Owner 南昌洋浦天然香料香精有限公司