Method for concurrent extracting sugarcane fat and chlorophyll from dross in sugar-refiney by using solvent

Abstract

Sugar refinery floater is washed, and then added with organic solvent, then separating extraction liquid, recovering solvent, to obtain cane fat and chlorophyll. In this invention, utilized are the differences of oil-dissolving property, smelting points and solubilities in solvents of cane fat and chlorophyll to proceed parallel separation. Due to the floater treatment is placed in front of clarification, the negative affect of organic non-sugar matter such as cane-fat and chlorophyll to sugar-prodn. is eliminated. This invention prodn. method has advantages of: high product quality, low cost, suitable for phosphorous floating method, or up-floating and sulfurous acid method (or carbonic acid method) combination sugar refinery.

Description

technical field [0001] The invention belongs to a method for extracting sucrose and chlorophyll from sugar mill scum. Background technique [0002] Cane fat is a kind of natural lipid, which is a mixture of free acids, alcohols and hydrocarbons. It has multiple biological functions and has no side effects. Cane fat has attracted much attention for its special use in the cosmetics and pharmaceutical industries, and its price is naturally high. , but some sugarcane-rich countries have produced sugarcane resin with lower cost by using sugarcane as raw material. Chlorophyll is a natural plant pigment, which has many uses in food, medicine and biological fields. [0003] In the traditional sugarcane sugar industry, after the sugarcane is squeezed, most of the sucrose and chlorophyll contained in the sugarcane enter the cane juice, and most of the sugarcane is filtered into the filter mud in the latter stage of the clarification process. . In order...

AI Technical Summary

Problems solved by technology

In order to obtain a good clarification effect, the sugarcane juice must be heated to about 100°C in the clarification process of carbonic acid sugar production and sulfite sugar production, and a long-term heat preservation and sedimentation process is carried out, so that the sucrose and sugar contained in the sugarcane juice Chlorophyll is decomposed or denatured; therefore, the extraction of sugarcane fat or chlorophyll from filter mud is not only difficult to handle, consumes a lot of solvents, and has high production costs, but also has low quality and yield of products, making it difficult for related technologies to be applied industrially.

[0004] At present, in the actual production process of sugarcane sugar, the scum is mixed with a large amount of sludge in the settler at the end of the clarification process and filtered to form a filter mud; due to the large amount of mud in the filter mud, the extractable substances in the filter mud The percentage content is very low, and the cost of extracting useful substances from filter mud is very high, which hinders the further recovery and utilization of useful substances

However, the comprehensive utilization of the scum produced in the sugar refining process is still blank, and there is no report on the parallel extraction of sucrose and chlorophyll.

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