Preparation method of non-edible animal and plant crude oil refined oil

Abstract

The invention relates to a preparation method of a non-edible animal and plant crude oil refined oil. The method includes: filtering squeezed or extracted crude oil, removing solid particle impurities, conducting heating to 40-80DEG C; under stirring, adding a conversion-complexing agent accounting for 1-3% of the mass of the crude oil, conducting constant temperature stirring for 50-90min, employing centrifugal separation at the end of reaction to obtain degummed oil and oil saponins; dehydrating the degummed oil under a vacuum degree of 0.07-0.09MPa and a temperature of 95-105DEG C for 15-25min, heating the dehydrated oil to 90-110DEG C, adding 1-4% of an adsorbent, performing constant temperature stirring for 10-30min, and conducting filtering to obtain the refined oil. While removing phosphorus, metals and other impurities efficiently, the method maintains the acid value of the oil constant, thereby reducing loss and improving the refined oil yield. The method has the characteristics of simple process, low energy consumption, no wastewater discharge, and high stability, etc.

Description

field of invention [0001] The invention belongs to the processing category of animal and vegetable oils, in particular to a method for preparing refined oil from pressed or extracted vegetable crude oil, waste oils and algae oils. Background technique [0002] With the development of the world economy and the increasing consumption of petroleum resources, energy shortage has become a major problem affecting the sustainable development of human society. Out of the consideration of national energy security, countries around the world are competing to seek renewable energy to ease the oil shortage. Due to its abundant reserves, environmentally friendly and renewable characteristics, while meeting the energy needs of the future society, it also conforms to the concept of sustainable scientific development and the concept of circular economy. Therefore, the development and use of bioenergy has become a developed country in the world today. important component of energy strategy....

AI Technical Summary

Problems solved by technology

Chemical refining has many processes, long process routes and high energy consumption

At the same time, neutralization (alkali refining) will not only cause the loss of free fatty acids, but also the saponins produced will entrain 20-50% of triglycerides, resulting in increased refining loss rate

In addition, due to the need to wash the saponified matter, waste water will also be generated. The COD value of these waste water is high and it is difficult to treat

Although the equipment and process have been continuously improved in recent years, the principle of chemical refining has not changed in the past 70 years, and the chemical refining process is used to refine animal and vegetable oils, and the resulting refined oil cannot fully meet the hydrogenation method to prepare bio-jet fuel / biodiesel. Raw material index requirements (phosphorus content less than 3ug / g, metal less than 5ug / g, unsaponifiable matter less than 0.5%, etc.)