Method for refining high-temperature wood hydrolyzate

Abstract

The invention discloses a method for refining a high-temperature wood hydrolyzate. The method comprises the following steps: performing centrifugation on a raw material hydrolyzate; removing the water-soluble macromolecular lignin by a flocculation method; obtaining the hydrolyzate after flocculation, adsorbing the water-soluble small molecule lignin with the resin, and obtaining a purified xylosesolution; removing residual lignin of the purified xylose solution by a filtering device to obtain refined xylose liquid and prepare xylose; and eluting the resin-adsorbed lignin with an eluting solvent, and recovering the eluting solvent and lignin. The recovered ethanol of the invention can be recycled and reused; an integrated vortex reactor is also used to effectively improve and increase theflocculation effect, and the ion exchange resin as an adsorbent has a good adsorption effect on the charged lignin. The hydrolyzate improves the membrane separation effect of a filter membrane and maintains a large flux of the membrane.

Description

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AI Technical Summary

Benefits of technology

This patented technical solution described in this patents allows for efficient recovery of alcohol (ethyl), lignocellulosic biomass (lucerne), and lime waste residue during various industries such as manufacturing industry, energy production, environmental protection, food processing, etc., without causing damage or contamination. By utilizing these methods, there will have improved results compared to traditional ways like burning fossil fuel. Additionally, the use of specific materials helps reduce resistance between components while also allowing them to separate efficiently.

Problems solved by technology

This patented describes methods for removing unwanted or harmful compounds such as phenols during production processes like bleach treatment and preparative digestion. Previous techniques have resulted in low yields due to decomposition of certain carbohemiaceous constituents present within these compound groups. However, this technique allows us to efficiently separate out valuable chemicals while minimizing waste generation.

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