Method for recycling cold pressing navel orange essential oil by using three-level disc separation system

Abstract

The invention relates to a process for industrially recycling cold pressing navel orange essential oil, and particularly relates to a method for recycling cold pressing navel orange essential oil by using a three-level disc separation system. Aiming at the characteristic that the orange essential oil is unsmooth in separation during the recycling process because of the yellow ropiness substances such as pectin in the navel orange pericarp, an essential oil extraction process including the deslagging, the pretreatment, the first disc separation, the second disc separation and the third disc separation is designed creatively; and the technical difficulties that a traditional extraction process requires highly on eccentric equipment and the separation process is hard to master are overcome. Furthermore by adjusting the pressure of the light phase and the heavy phase of the outlet of a disc separation machine and by controlling the water temperature and the pH value, the essential oil content of the product exceeds 99%; and the process requirements on industrially recycling the high quality navel orange essential oil in large scale are met.

Description

technical field [0001] The invention relates to a process for industrially recovering cold-pressed navel orange essential oil, in particular to a method for recovering cold-pressed navel orange essential oil by using a three-stage disc separation system. Background technique [0002] Citrus peel contains essential oil, cellulose, pigment, pectin, hesperidin, etc. Among them, orange peel essential oil is composed of terpenes, alcohols, aldehydes and esters, etc. It has a pleasant and unique aromatic flavor and has the ability to make the human body It has the effect of sedating the central nervous system and relieving stress. It also has the functions of eliminating phlegm, relieving cough, promoting gastrointestinal motility, promoting secretion of digestive juice, anti-inflammatory and antibacterial effects. It is often used in food, beverage, cosmetics and pharmaceutical industries. A very important and popular high-quality natural fragrance and an important chemical raw m...

AI Technical Summary

Problems solved by technology

However, this method has high requirements on the separation capacity of the centrifuge, and the separation process is not easy to control. The last step may cause emulsion and more water to enter the product due to poor separation.

The separation efficiency of the centrifuge is related to the feed rate. The separation in the first step of the two-stage disc separation system requires the concentration of orange oil to be increased to a higher value, so the feed rate must be controlled, otherwise the separation effect will be poor, and more orange Oil will go into the heavy phase resulting in lower yields, controlled feed rates lead to low production efficiency, in addition, orange peel is rich in yellow viscous substances including pectin, high concentration rate of two-stage disc separation can lead to separation Unsmooth or even blockage of pipes