Method for refining high-temperature wood hydrolyzate

A refining method and hydrolyzate technology are applied in the refining field of high-temperature wood hydrolyzate, which can solve the problems of complex process, low efficiency, toxic and side effects, and achieve the effects of improving processing efficiency, short material time, and short material residence time.

Pending Publication Date: 2019-02-01
CHENGDU LIANJIE MEMBRANE TECH
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  • Claims
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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.

Method used

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  • Method for refining high-temperature wood hydrolyzate
  • Method for refining high-temperature wood hydrolyzate
  • Method for refining high-temperature wood hydrolyzate

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Embodiment Construction

[0030] The purpose of the present invention is to provide a process for removing most of lignin from wood high temperature hydrolyzate. The soluble lignin macromolecules in the prehydrolyzate have colloidal characteristics, which can easily cause membrane clogging in the subsequent treatment. Therefore, some embodiments of the present disclosure include a hydrocyclone to remove large particles of impurities. The hydrocyclone is a device that uses centrifugal force to separate two media with different gravity. The hydrolyzate contains some insoluble Particles from the water, thereby separating them out. Lignin contains a large number of active groups such as hydroxyl and carboxyl, with negative charges. The flocculant used in the present invention can chemically react with lignin to form lignin complex, and the solubility of lignin changes to precipitate. The flocculant adsorbs lignin to form a colloid to flocculate, or changes the spatial structure of lignin to precipitate lign

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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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Claims

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Application Information

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Owner CHENGDU LIANJIE MEMBRANE TECH
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