Concentrated acid treatment section, concentrated acid treatment method, plant resource phase separation system conversion device and conversion method

摘要

Provided are a plant resource phase separation system conversion device, a conversion method, a concentrated acid treatment unit, and a concentrated acid treatment method for efficiently and continuously producing a lignin derivative and a hydrolyzed carbohydrate from plant resources. The concentrated acid treatment part (3) comprises a reaction part (20) and a stirring extraction part (25), and the raw materials (15) derived from plant resources are degreased with a solvent (14) and confused phenols (13). The phenol sorption raw material (16) formed by sorbing is introduced and fed out as a mixed solution of a phenol solution containing a lignophenol derivative and a concentrated acid solution containing a hydrolyzate of cellulose. The reaction part (20) stirs and mixes the phenol sorption raw material (16) and the concentrated acid (21A), swells the cellulose, converts lignin to lignophenol, and hydrolyzes part of the cellulose. The stirring extraction section (25) introduces the liquid to be treated sent from the reaction section (20), adds the extraction phenols (33), and stirs the lignophenol dispersed in the concentrated acid solution in the extraction phenols. To dissolve and extract.