Novel cleaning technique for production of high-quality sugar

Abstract

This invention discloses a new cleaning process of producting high quality sugar, and solves the problems of the long line of production, high energy consumption and high processing cost in the well-known two-step method which is used in it.The well-known process comprises the following steps: sugar-cane squeeze or beet lixiviation-elementary filtering-washing the filtered liquid-cooking sugar-separating honey-finished sugar. The cleaning process adds membrane filter, which comprises a membrane assembly, a container, a pump, a device for adding enzymes, a valve and a pipe. Filtering the washing liquid by membrane filter, and then evaporating pure washing liquid, partial washing liquid which don't pass the membrane will return to the container, and the entrapped concentrated liquid which contains many impurities will return to the elementary filter. The membrane in the membrane assembly is ceramic membrane, the aperture of it is 1 mum-0.02 mum. The liquid from the second and the third step is added enzymes by the device befor the membrane filter. The enzymes are amylase. The proportion between amylase to liquid as 0.05-20ppm. The temperature in the membrane filter is 25-100 degrees. In this way, the turbidity index is reduced largely, and the quality of liquid is increased substantially, so much more high quality sugar is produced. And it can improve membrane flux remarkably and availably, and prolong the cleaning frequency for membrane. It fits specially sugar production process for sugar-cane and beet.

Description

Technical field [0001] The invention relates to a new clean process for producing high-quality sugar, which is especially suitable for the sugar cane and beet sugar production process. Background technique [0002] At present, known sugar cane and sugar beet sugar making processes mainly adopt carbonation or sulfurous acid method, wherein the quality of white sugar produced by carbonation method is better. The finished sugar produced by the above two methods is called farmland white sugar. The quality of cultivated white sugar is far from that of the mainstream sugar consumed in the world (mainly produced by two-step process with high cost). Contents of the invention [0003] In order to overcome the deficiencies in the existing sugar cane and sugar beet sugar production process, the invention provides a new sugar production process, which can produce high-quality sugar by one-step process. At the same time, reducing the amount of chemicals added and the cost of producin...

AI Technical Summary

Problems solved by technology

The quality of cultivated white sugar is far from that of the mainstream sug

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