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Method for utilizing cycloalkanol in eucalyptol separation water solution and application of cycloalkanol

A technology of cycloalkanol and eucalyptol, which is applied in the field of cycloalkanol, can solve problems such as difficult and effective separation of cycloalkanol, failure to achieve separation, waste of cycloalkanol, etc., and achieves beneficial recycling, excellent extraction effect, and reduced The effect of content

Inactive Publication Date: 2016-08-03
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Cycloalkanol has a certain solubility in water (for example, the solubility of cyclohexanol in water at 20°C is 3.6g / 100g), and in the production and use of cycloalkanol, it is easy to produce a binary system of cycloalkanol-water , not only waste cycloalkanol, but also pollute water bodies
Cyclopentanol, cyclohexanol, etc. can form azeotropes with water, and simple distillation or fractionation cannot achieve separation. It is difficult to effectively separate cycloalkanol in aqueous solutions in the prior art

Method used

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  • Method for utilizing cycloalkanol in eucalyptol separation water solution and application of cycloalkanol
  • Method for utilizing cycloalkanol in eucalyptol separation water solution and application of cycloalkanol
  • Method for utilizing cycloalkanol in eucalyptol separation water solution and application of cycloalkanol

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Embodiment 1

[0030] An aqueous solution containing cyclohexanol at a concentration of 10,000 ppm was passed through a grid to remove impurities. Take eucalyptol and cyclohexanol aqueous solution and place them in an extraction vessel at a volume ratio of 0.5:1. Under the condition of 10°C, the rotating speed of the magnetic stirrer is 500rpm, stirring for 10min, and standing for 1h in a constant temperature bath at a temperature of 10°C. After standing, the solution is divided into upper and lower phases, and the lower raffinate phase is separated, and the content of cyclohexanol in the raffinate phase is 70 ppm by gas chromatography.

Embodiment 2

[0032] An aqueous solution containing cyclohexanol at a concentration of 20,000 ppm was passed through a grid to remove impurities. Take eucalyptol and cyclohexanol aqueous solution and put them in the extraction container according to the volume ratio of 1:1. Under the condition of 25°C, the rotating speed of the magnetic stirrer is 500rpm, stirring for 10min, and standing in a constant temperature bath at 25°C for 1h. After standing, the solution is divided into upper and lower phases, and the lower raffinate phase is separated, and the content of cyclohexanol in the raffinate phase is 110 ppm by gas chromatography.

Embodiment 3

[0034] An aqueous solution containing cyclohexanol at a concentration of 30,000 ppm was passed through a grid to remove impurities. Take eucalyptol and cyclohexanol aqueous solution and put them in the extraction container according to the volume ratio of 1:1. Under the condition of 25°C, the rotating speed of the magnetic stirrer is 500rpm, stirring for 10min, and standing in a constant temperature bath at 25°C for 1h. After standing, the solution is divided into upper and lower phases, and the lower raffinate phase is separated, and the content of cyclohexanol in the raffinate phase is 120 ppm by gas chromatography.

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Abstract

The invention belongs to the technical field of water treatment, and discloses a method for utilizing cycloalkanol in a eucalyptol separation water solution and application of the cycloalkanol. The eucalyptol is used as an extractant to extract cycloalkanol in the water solution at 10-40 DEG C, thereby separating the cycloalkanol under milder conditions. The method is beneficial to maintaining the purity of the cycloalkanol and enhancing the separation efficiency, and is more beneficial to lowering the energy consumption of the separation operation. The extraction equipment is more simplified, thereby being beneficial to enhancing the stability and reliability of the separation technique and lowering the maintenance cost. The eucalyptol is the natural essential oil extract which is friendly to the environment and harmless to humans and livestock, thereby being beneficial to the protection of the ecological environment and enhancing the safety of the treated water body.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a method for separating cycloalkanol in an aqueous solution by using eucalyptol and an application thereof. Background technique [0002] Eucalyptol, also known as eucalyptol, is a colorless transparent liquid with a cool taste and a camphor-like taste. Eucalyptol has a boiling point of 176°C, a melting point of 1-1.5°C, a freezing point of 1°C, and a flash point of 47-48°C. It is soluble in ethanol, ether, chloroform, glacial acetic acid, glycerin and most non-volatile oils, and slightly soluble in water. Eucalyptol is derived from the plant essential oil eucalyptus oil and is the main component of eucalyptus oil. Eucalyptus oil is often extracted from eucalyptus leaves, the main by-product of eucalyptus agriculture and forestry, through steam distillation. It is environmentally friendly and renewable, and is in line with today's sustainable industrial produ...

Claims

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Application Information

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IPC IPC(8): C07C29/86C07C35/08C07C35/06
CPCC07C29/86C07C35/06
Inventor 冯璋霓李珩德万力储国强
Owner GUANGDONG UNIV OF TECH
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