Preparation method of eucalyptus oil with mass fraction of cineole being more than 80%

Abstract

The invention discloses a preparation method of eucalyptus oil with the mass fraction of cineole being more than 80%, and aims to solve the problems of complex process and long time of the existing eucalyptus oil with the mass fraction of cineole being 80% or above. The method comprises the following specific steps: (1), heating eucalyptus maideni raw oil with steam, and then vacuumizing the raw oil to obtain oil steam; (2), fractionating the oil steam according to different boiling points of the components, condensing the oil steam, and discharging the wastewater to obtain the finished product. The method has the advantages of simple steps and short production time, and can be used for obtaining refined cinnamomum camphora oil, white oil and eucalyptol oil with different mass fractions only by heating and converting the eucalyptus maideni raw oil into oil steam and fractionating and condensing the oil steam by using different boiling points of components; therefore, the eucalyptus oilwith the mass fraction of eucalyptus oil being 95% or above can be obtained through freezing purification, so that the requirements of different customers can be met, and the eucalyptus oil has widemarket prospects.

Description

technical field

[0001] The invention relates to the field of eucalyptus oil production, in particular to a method for preparing eucalyptus oil whose mass fraction of eucalyptol is more than 80%. Background technique

[0002] Eucalyptus oil, also known as melaleucaol and eucalyptol, is a colorless oily liquid extracted from eucalyptus oil, eucalyptus oil, camphor oil, bay leaf oil and other substances, and has a unique cool and sharp eucalyptus leaf aroma It also has a bit of camphor smell and some medicinal smell. It has a spicy and refreshing feeling. The aroma is strong but not long-lasting. It is widely used in medicine and preparation of toothpaste essence. It is a colorless or slightly yellow liquid, almost insoluble in water, soluble in ethanol , ethanol, oils and fats.

[0003] Eucalyptol is an important component of eucalyptol oil. The content of eucalyptol is an important indicator to measure whether eucalyptol oil can be sold as a finished product. Usually, eucaly...

Examples

Embodiment 1

[0022] A kind of mass fraction of eucalyptol is the preparation method of eucalyptus oil more than 80%, and concrete steps are as follows:

[0023] Step 1: steam heating Eucalyptus orchid crude oil in a vacuum fractionation kettle, the operation stability is good, steam heating includes steam heating in the front section and steam heating in the back section, the temperature of the steam heating in the front section is 98 degrees Celsius, and the temperature of the steam heating in the back section is 112 degrees Celsius, and then vacuumize to get oil vapor;

[0024] Step 2: According to the different boiling points of the components, the oil vapor is fractionated in the fractionating tower, then condensed in the condenser, and then the waste water is discharged to obtain the finished product.

Embodiment 2

[0026] A kind of mass fraction of eucalyptol is the preparation method of eucalyptus oil more than 80%, and concrete steps are as follows:

[0027] Step 1: steam heating Eucalyptus orchid crude oil, steam heating includes front-stage steam heating and rear-stage steam heating, the front-stage steam heating is 102 degrees Celsius for 70 minutes, the rear-stage steam heating is 10 degrees Celsius for 195 minutes, and then vacuumed with a vacuum pump , get oil vapor;

[0028] Step 2. According to the different boiling points of the components, the oil vapor is fractionated, and then water with a temperature of 4 degrees Celsius is used as the condensation medium for condensation. Water is used as the condensation medium. The resource is easy to obtain, recyclable and environmentally friendly, and then the waste water is discharged , that is, the finished product is obtained.

Embodiment 3

[0030] A kind of mass fraction of eucalyptol is the preparation method of eucalyptus oil more than 80%, and concrete steps are as follows:

[0031] Step 1: steam heating Eucalyptus orchid crude oil, steam heating includes front-stage steam heating and rear-stage steam heating, the front-stage steam heating is 100 degrees Celsius for 65 minutes, the rear-stage steam heating is 109 degrees Celsius for 230 minutes, and then vacuumized to obtain oil vapor;

[0032] Step 2: According to the different boiling points of the components, the oil vapor is fractionated, then condensed, and then the waste water is discharged to obtain the finished product, which is then frozen and purified to obtain eucalyptus leaves with a mass fraction of eucalyptol of more than 95% oil, which can meet the needs of different users.

technical field

[0001] The invention relates to the field of eucalyptus oil production, in particular to a method for preparing eucalyptus oil whose mass fraction of eucalyptol is more than 80%. Background technique

[0002] Eucalyptus oil, also known as melaleucaol and eucalyptol, is a colorless oily liquid extracted from eucalyptus oil, eucalyptus oil, camphor oil, bay leaf oil and other substances, and has a unique cool and sharp eucalyptus leaf aroma It also has a bit of camphor smell and some medicinal smell. It has a spicy and refreshing feeling. The aroma is strong but not long-lasting. It is widely used in medicine and preparation of toothpaste essence. It is a colorless or slightly yellow liquid, almost insoluble in water, soluble in ethanol , ethanol, oils and fats.

[0003] Eucalyptol is an important component of eucalyptol oil. The content of eucalyptol is an important indicator to measure whether eucalyptol oil can be sold as a finished product. Usually, eucaly...

Examples

Embodiment 1

[0022] A kind of mass fraction of eucalyptol is the preparation method of eucalyptus oil more than 80%, and concrete steps are as follows:

[0023] Step 1: steam heating Eucalyptus orchid crude oil in a vacuum fractionation kettle, the operation stability is good, steam heating includes steam heating in the front section and steam heating in the back section, the temperature of the steam heating in the front section is 98 degrees Celsius, and the temperature of the steam heating in the back section is 112 degrees Celsius, and then vacuumize to get oil vapor;

[0024] Step 2: According to the different boiling points of the components, the oil vapor is fractionated in the fractionating tower, then condensed in the condenser, and then the waste water is discharged to obtain the finished product.

Embodiment 2

[0026] A kind of mass fraction of eucalyptol is the preparation method of eucalyptus oil more than 80%, and concrete steps are as follows:

[0027] Step 1: steam heating Eucalyptus orchid crude oil, steam heating includes front-stage steam heating and rear-stage steam heating, the front-stage steam heating is 102 degrees Celsius for 70 minutes, the rear-stage steam heating is 10 degrees Celsius for 195 minutes, and then vacuumed with a vacuum pump , get oil vapor;

[0028] Step 2. According to the different boiling points of the components, the oil vapor is fractionated, and then water with a temperature of 4 degrees Celsius is used as the condensation medium for condensation. Water is used as the condensation medium. The resource is easy to obtain, recyclable and environmentally friendly, and then the waste water is discharged , that is, the finished product is obtained.

Embodiment 3

[0030] A kind of mass fraction of eucalyptol is the preparation method of eucalyptus oil more than 80%, and concrete steps are as follows:

[0031] Step 1: steam heating Eucalyptus orchid crude oil, steam heating includes front-stage steam heating and rear-stage steam heating, the front-stage steam heating is 100 degrees Celsius for 65 minutes, the rear-stage steam heating is 109 degrees Celsius for 230 minutes, and then vacuumized to obtain oil vapor;

[0032] Step 2: According to the different boiling points of the components, the oil vapor is fractionated, then condensed, and then the waste water is discharged to obtain the finished product, which is then frozen and purified to obtain eucalyptus leaves with a mass fraction of eucalyptol of more than 95% oil, which can meet the needs of different users.