System and technology for continuous film production of beet sugar

Abstract

The invention relates to a system and technology for continuous film production of beet sugar and belongs to the field of sugar making. The system comprises a juice penetration device (1), a liquid rotation device I (3), a high-frequency vibration sieve I (5), a mixer (7), a static mixer (8), a liquid rotation device II (9), a high-frequency vibration sieve II (11), an ultrafiltration membrane (14), a nanofiltration membrane (15), a reverse osmosis membrane unit (18), an evaporator (19) and a crystallizer (20). According to the system for continuous film production of the beet sugar, intelligent continuous operation is achieved, the step of cleaning lime is omitted, and environmental pollution is not caused. Compared with clear juice in the prior art, the sugar degree of the obtained pre-concentrated juice is increased by 10-16 wt%, and the evaporation load can be lowered by 60-70% through increase of the sugar degree; the efficiency is improved, and the cost is lowered.

Description

technical field [0001] The invention belongs to the field of sugar production, and in particular relates to a system and a process for producing beet sugar with a continuous membrane. Background technique [0002] The sugar beet sugar production process mainly includes washing vegetables, shredding, juice extraction, clarification, evaporation concentration, evaporation crystallization, separation of molasses, white sugar packaging and other processes. Because the non-sugar components in beet exudate juice, including suspended particles, pigment substances, salt substances, reducing sugar, pectin and betaine, etc., will affect the quality of sugar products, and increase the amount of waste honey and sugar loss, so in the process of Before the concentration and crystallization of sugar juice, it is necessary to clarify the exudate juice to remove non-sugar impurities as much as possible, so as to improve the purity of the sugar juice, reduce the viscosity and color value, and...

AI Technical Summary

Problems solved by technology

At present, beet sugar factories usually use bicarbonate method to clarify sugar juice, which can generally remove 30-45% of non-sugar content in the exuded juice, but the efficiency is too low, and the lime consumption is large, and it is difficult to deal with a large amount of lime residue. Environmental pollution is more serious

[0004] (2) The hammer of clear juice is not high enough, and the content of main non-sugar components in clear juice is relatively high, including inorganic salts, nitrogenous substances, reducing sugars, etc., subsequent evaporation load is heavy, energy consumption is high, and sugar production efficiency is low

[0005] (3) Due to the high latent heat of vaporization of water, the evaporation of water will consume a large amount of heat energy and fuel, resulting in an increase in production costs; in addition, the traditional evaporation concentration process, the evaporation temperature is 125-135 ° C, and the residence time of sugar juice is long. The high temperature of time will easily degrade the sugar juice, deepen the color, and reduce the quality of the sugar juice, which will eventually affect the quality of the product

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