Method for producing white sugar, light brown sugar and dark brown sugar using direct recovery process

Abstract

The present invention relates to a method for producing white sugar, brown white sugar and dark brown sugar, the method including: pressing and juicing sugar cane to extract sugar cane juice; adding lime to the juice and removing foreign matter and impurities from the juice; vacuum-concentrating the filtered juice in a first vacuum concentrator to produce a first crystal slurry containing sucrose; centrifuging the first crystal slurry in a first high-speed centrifuge into a first crystal and a first mother liquor and recovering the first crystal as dark brown sugar or transferring the first crystal to a second vacuum concentrator; vacuum-concentrating the transferred first crystal in the second vacuum concentrator to produce a second crystal slurry containing sucrose; centrifuging the second crystal slurry in a second high-speed centrifuge into a second crystal and a second mother liquor, transferring the second liquor to the pressing and juicing step, and drying the second crystal to produce brown white sugar, or transferring the second crystal to a third vacuum concentrator; vacuum-concentrating the transferred second crystal in the third vacuum concentrator to produce a third crystal slurry containing sucrose; and centrifuging the third crystal slurry in a third high-speed centrifuge into a third crystal and a third mother liquor, transferring the third mother liquor to the first vacuum concentrator, and drying the third crystal to produce white sugar.

Description

technical field [0001] The present invention relates to a method for preparing white sugar, brown sugar and brown sugar, and in particular to a method for preparing white sugar, brown sugar and brown sugar from juice extracted from sugarcane through a multi-stage vacuum crystallization process. Background technique [0002] Typically, sugar is produced from sugar cane or beets. In the case of sugarcane, raw sugar is prepared by crushing sugarcane and boiling the crushed sugarcane in boiling water to extract sucrose, followed by drying. Since jaggery is composed of sucrose crystals contained in sugarcane together with various nutrients and fibers, jaggery has the advantage of being rich in minerals and having flavor and fragrance. However, raw sugar has a low sugar content, and unlike white sugar, raw sugar cannot be stored for a long time due to fibers and other components it has, and changes in flavor occur when stored at room temperature for a long time, making raw sugar ...

AI Technical Summary

Problems solved by technology

[0010] As mentioned above, the prior art process for sugar production is a complex process consisting of multiple steps, and therefore, has limitations due to the generation of waste water in the refining step and the use of auxiliary materials, which play an important role in reducing production costs impose restrictions on

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