Continuous ion exchange system for xylose production and using method thereof

Abstract

The invention relates to a continuous ion exchange system for xylose production. The system comprises a plurality of cation exchange resin columns, a plurality of anion exchange resin columns, a connecting pipeline, an automatic control valve and an automatic control system, the connecting pipeline comprises an ion blow-off main pipe, a purified water main pipe, a regenerant main pipe, a production main pipe, a refining main pipe, a sweet water main pipe, a production material string column header pipe, a refined material string column header pipe, a transfer string column pipeline and a string column pipeline, the plurality of cation exchange resin columns and the plurality of anion exchange resin columns respectively form a water jacking group, a refining group, a production group, a sugar jacking group, a backwashing group, a regeneration group and a leaching group which move in sequence and operate circularly, and an automatic control system periodically controls each group of ionexchange resin columns through an automatic control valve to realize the production, refining, sugar ejection of water, water ejection of sugar, backwashing, leaching and regeneration processes. A using method of the system is also disclosed. The consumption of a regenerant and purified water is reduced, the sewage discharge amount is small, and the production cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of ion exchange treatment, and particularly relates to a continuous ion exchange system for xylose production and a method for using the same. Background technique [0002] Xylose is the most abundant five-carbon sugar in nature, and widely exists in the hemicellulose of natural plants in the state of polycondensation. Xylose can be obtained by degrading xylan with acid or enzymes. The majority of xylose production enterprises in northern my country mainly use corn cob as raw material, and the production methods include dilute acid hydrolysis and enzymatic hydrolysis. At present, the commonly used method is dilute acid hydrolysis. As a natural product, under the catalysis of dilute acid, the hemicellulose in corncob is first hydrolyzed to generate monosaccharides such as D-xylose, L-arabinose, glucose and galactose. At the same time, the corncob entrains a large amount of inorganic salts in the production ...

AI Technical Summary

Problems solved by technology

The common ion exchange process is a fixed bed separation and desalination process. The manual operation error is large, and it is easy to run out of materials, resulting in a separation and delivery rate of only about 85%, and the resin utilization rate is low, and the amount of regenerant and purified water are large.

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