Production method of refined rice bran wax

Abstract

The invention relates to a production method of refined rice bran wax and can effectively solve problem about preparation of the refined rice bran wax from crude rice bran wax through industrial squeezing. The method comprises the following steps: the crude rice bran wax is melted into wax liquor, the wax liquor is dried in vacuum for water removal and pumped into an extraction tank, a solvent and an adsorbent are added, the mixture is subjected to reflux extraction, a product is left to stand for layering, a colloidal material on the lower layer is for other use, wax oil mixed liquor on the upper layer is subjected to heat preservation and filtered, trace impurities are removed, cooling crystallization and crystal growing are performed, the solvent is recovered from mixed oil on the upper layer through an evaporation system, neutral oil is obtained, crystal mixed wax liquor on the lower layer enters a rotary drum vacuum filter, solid wax and oil are separated out, the oil is recycled, the solid wax is heated, evaporated in vacuum and concentrated, trace solvent and water are removed, liquid rice bran wax is obtained and subjected to cooling granulation, and the refined rice bran wax is obtained. The method is novel, unique, high in production efficiency, low in cost, energy-saving and environment-friendly, physical and chemical reactions are integrated, the technical problems about industrial rice bran wax refining are solved effectively, and the economic value of the rice bran wax is exploited.

Description

technical field [0001] The invention relates to chemical industry, in particular to a production method of refined rice bran wax. Background technique [0002] Rice bran wax is a natural lipid biochemically synthesized during rice growth, which protects rice grains from microbial attack and environmental impact. Rice bran wax and oil coexist in the rice cortex and are separated out along with the oil. There are 2%~4% bran wax in rice bran oil. At room temperature, it crystallizes and precipitates into a mist suspended in the oil or sinks in the lower part of the container. When the temperature rises, it gradually dissolves in the oil and becomes transparent. If the wax is not removed, the transparency of the oil will be poor, which will affect the appearance quality; edible waxy oil will affect digestion and absorption; it will be used as a raw material for the production of hydrogenated oil and ancient oil, which will affect the efficiency of the catalyst and the transpare...

AI Technical Summary

Problems solved by technology

However, the waxy substance separated from rice bran oil is rough rice bran wax, which cannot be directly used in industrial production and must be refined and purified. However, the current production methods and equipment of refined rice bran wax cannot guarantee the effect of refining and purifying. Moreover, the production efficiency is low, the cost is high, and the environment is polluted. Therefore, the improvement and innovation of the rice bran wax refining method are technical problems that must be solved.

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