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Method for refining camellia oil by adopting short-path distillation

A short-path distillation, camellia oil technology, applied in the direction of fat oil/fat refining, fat production, etc., can solve the problems of loss and large loss of camellia oil, and achieve the effect of reducing implementation costs and avoiding secondary pollution.

Inactive Publication Date: 2010-06-02
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method uses alkali to neutralize camellia oil crude oil, and there is a large loss of camellia oil, and one part of oil is lost for one part of acid removal, and the problem of more oil loss

Method used

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  • Method for refining camellia oil by adopting short-path distillation
  • Method for refining camellia oil by adopting short-path distillation
  • Method for refining camellia oil by adopting short-path distillation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Weighing a certain pressed camellia oil crude oil 10Kg, its measurement acid value AV is 8mgKOH / g; This pressed camellia oil crude oil directly enters buffer tank 1 place, is imported into the first stage film evaporator 2 by metering pump Dehydration and degassing are carried out at a temperature of 80°C and a pressure of -0.9Mpa. After dehydration and degassing, the pressed camellia oil continues to enter the next short-path distiller for deacidification and separation.

[0028] (2) The pressed camellia oil after dehydration and degassing is imported into the second-stage short-path distiller 3 through a pump, and deacidified and separated. 0.35Kg, deacidified camellia oil 9.6Kg, its measured acid value AV is 0.9mgKOH / g. The invention directly processes camellia oil crude oil without pretreatment, simple process and less loss.

Embodiment 2

[0030] (1) Weighing 20Kg of camellia oil crude oil extracted by a certain solvent, its measurement acid value AV is 6mgKOH / g, the camellia oil extracted by this solvent directly enters buffer tank 1, and is imported into the first-stage thin film evaporator by metering pump 2. Carry out dehydration and degassing, specifically at a temperature of 120°C and a pressure of -0.8Mpa. The solvent-extracted camellia oil after dehydration and degassing continues to enter the next short-path distiller for deacidification and separation.

[0031] (2) dehydration, solvent extraction after degassing camellia oil is input in the second stage short-path distiller 3 through pump, carry out deacidification separation, concrete condition is that distillation temperature is 150 ℃, and pressure is the free fatty acid weight that separates under 1Pa About 0.5Kg, deacidified camellia oil 19.2Kg, its measured acid value AV is 0.8mgKOH / g.

Embodiment 3

[0033] (1) Weigh 20Kg of pressed camellia oil from Huiying camellia oil factory in Hengyang, Hunan, and its measured acid value AV is 6.5mgKOH / g. The camellia oil extracted by this solvent is directly put into buffer tank 1, and is input to the first stage by metering pump The thin film evaporator 2 performs dehydration and degassing, specifically at a temperature of 100°C and a pressure of -0.85Mpa. The solvent-extracted camellia oil after dehydration and degassing continues to enter the next short-path distiller for deacidification and separation.

[0034] (2) The solvent extracted camellia oil after dehydration and degassing is pumped into the second-stage short-path distiller 3 for deacidification and separation. The specific conditions are that the distillation temperature is 140° C. and the pressure is the free fatty acid separated under 0.1 Pa. The weight is about 0.55Kg, and the deacidified camellia oil is 19.3Kg, and its measured acid value AV is 0.6mgKOH / g.

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Abstract

The invention discloses a method for refining camellia oil by adopting short-path distillation, comprising two-stage distillation. During first-stage distillation, firstly the crude camellia oil is directly poured into a buffer tank, then the crude camellia oil is introduced into a first-stage film evaporator through a pump to undergo primary dehydration and degasification under the conditions of temperature between 60 DEG C and 120 DEG C and pressure between minus 0.8MPa and minus 0.95MPa. During second-stage distillation, the camellia oil after undergoing dehydration and degasification is introduced into a second-stage short-path distillator through a pump to undergo deacidification under the conditions of temperature controlled between 100 DEG C and 180 DEG C and pressure between 100Pa and 0.1Pa, thus obtaining oleic acid with high acid value and camellia oil with low acid value. The process with high pollution of wastewater drained after soda soap washing and water washing in the chemical processes of alkali refining and neutralizing does not exist during processing the camellia oil. The flow is simple, the oleic acid with high value and the camellia oil with low acid value are separated by distillation, the separation process is a physical process, and the camellia oil is free of loss, thus having very high yield.

Description

technical field [0001] The invention relates to a method for refining camellia oil by using a short-path distiller. It specifically relates to a treatment method for separating high-quality camellia oil with low acid value and meeting the first-class national standard camellia oil by using short-distance distillation technology; it belongs to the fields of deep processing of natural products and processing of agricultural by-products. Background technique [0002] Camellia oil is an important daily oil and industrial raw material. The current common deacidification method of camellia oil is to use alkali to neutralize (called alkali refining) the crude oil of camellia oil, then through static sedimentation or centrifugal separation, washing with water and again standing still sedimentation or centrifugal separation and drying and dehydration to obtain deacidified camellia oil Oil. This method neutralizes (called alkali refining) camellia oil crude oil with alkali, and ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/12
Inventor 朱宝璋朱力
Owner SOUTH CHINA UNIV OF TECH
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