Production method for fully using oil-containing micro-algae

Abstract

The invention relates to the filed of microalgae utilization engineering, in particular to a production method for fully utilizing oleaginous microalgae. The method is characterized in that the wall of the microalgae is broken by a high-pressure homogenization method, and the solid phase and liquid phase are separated out by an extraction kettle and a horizontal spiral centrifuge, and microalgae powder is made from the solid phase by a spray dryer. An oil phase and a water phase are separated from the liquid phase by an oil-water separator, and the oil phase is microalgae oil. A solid phase and a liquid phase are separated from the water phase by a vacuum concentration kettle, a salting-out kettle and a high-speed centrifugal filter, and microalgae protein is made from the solid phase by a freeze dryer or a spray dryer. A solid phase and a liquid phase are separated from the liquid phase by an alcohol precipitation kettle and the high-speed centrifugal filter, and microalgae polysaccharide is made from the solid phase by the freeze dryer or the spray dryer, and ethanol and microalgae liquid fertilizer are made from the liquid phase by an ethanol recovery tower. The invention is a good production method which requires low investment, has simple operation and can comprehensively use microalgae on a large scale, and can produce semi-finished products with high added value, such as the microalgae oil, the microalgae powder, the microalgae protein, microalgae polysaccharide, the microalgae liquid fertilizer, etc.

Description

[technical field] [0001] The invention relates to the field of microalgae utilization engineering, in particular to a production method for fully utilizing oily microalgae. [Background technique] [0002] Microalgae are a kind of primitive and very important marine and aquatic biological resources, rich in fat, protein, polysaccharide, astaxanthin, vitamins, minerals, chlorophyll, β-carotene and other biologically active substances, and have fast growth The use of microalgae to obtain high-value active substances has become one of the research hotspots in various countries. [0003] The unsaturated fatty acids contained in microalgae fat (oil) are not only important components of higher animal cells, but also have special preventive and therapeutic effects on cardiovascular diseases. Anti-inflammation, immune regulation, anti-allergic, anti-tumor and anti-tumor effects, among which eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are particularly prominent. In th...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to overcome the deficiency of low efficiency of utilizing microalgae at present, and develop a production method with less investment, simple operation, and large-scale comprehensive utilization of microalgae, especially for the oil-containing microalgae which is focused on in order to solve the oil crisis

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