Efficient separation method for sugar in sugar beet sugar production

Abstract

The invention discloses an efficient separation method for sugar in sugar beet sugar production. The method comprises the following specific steps: molasses pretreatment, chromatographic separation, concentration and crystallization, and sugar content detection. The method comprises the following steps: 1) molasses pretreatment: heating molasses to 70-90 DEG C, diluting the molasses to 50-70% withwashing water, removing suspended impurities from the diluted molasses aqueous solution, and filtering to obtain clean juice free of suspended impurities, calcium, magnesium and the like; 2) chromatographic separation: sequentially simulating a moving bed, and obtaining two items through separation, wherein an extraction phase contains sucrose with a high recovery rate, and a residual liquid phase contains non-sugar with a high recovery rate; 3) concentration and crystallization: evaporating and concentrating to 65-75% brix, storing, performing four-stage sugar boiling and crystallization toobtain qualified white granulated sugar (the color value is less than or equal to 35IU), and concentrating and crystallizing an extract phase to obtain purified syrup of which the sucrose purity can reach 89-95%, the brix is 30-350Bx and the sugar recovery rate is 88-95%; and 4) sugar content detection: detecting the purity of sucrose by using high performance liquid chromatography. The method isreasonable in design, environmentally friendly in use and high in economic benefit, and high-purity components can be obtained.

Description

technical field [0001] The invention relates to a separation method, in particular to a high-efficiency separation method for sugar beet sugar. Background technique [0002] In recent years, the scale of beet planting in China has become larger and larger, and the amount of sugar beet molasses has increased. A large amount of molasses is produced in the process of sugar beet making. This molasses is the hard-to-degrade part of sugar mill waste, which not only pollutes the environment seriously, but also becomes a bottleneck restricting the sustainable economic development of sugar mills. It is the second largest waste liquid after papermaking. At present, the conventional biochemical treatment of molasses cannot meet the requirements of wastewater discharge standards. Whether the molasses can be effectively treated has become the key to whether the company can continue to produce high-quality sugar. The use of advanced sugar-making technology can reduce the loss of sugar pr...

AI Technical Summary

Problems solved by technology

A large amount of molasses is produced in the beet sugar production process. The molasses is a difficult to degrade part of sugar factory waste. It not only seriously pollutes the environment, but also becomes a bottleneck restricting the sustainable development of the sugar factory economy. It is the second largest after papermaking waste liquid. Pollution source, the current treatment of molasses by conventional biochemical methods cannot meet the requirements of wastewater discharge standards. Whether molasses can be effectively treated becomes the key to whether the company can continue to produce high-quality sugar

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