System and method for extraction of chemicals from lignocellulosic materials

摘要

An organosolv process for producing bio-products by decomposing lignocellulosic materials comprises providing an initial lignin solvent with water, an acid, and a lignin dissolving chemical comprising at least one of an organic ester, butyl acetate, an organic furan, and furfural. The process also includes placing the lignin solvent in contact with a biomass to form a circulation solvent, and recycling at least a portion of the circulation solvent by circulating the circulation solvent back into contact with the biomass. The circulating of the circulation solvent occurs for a period of time, after which, the process then includes separating material such as chemicals and lignin from the circulation solvent. The chemicals can be recycled as new solvent or sold while lignin can be used as natural and renewable colorant for polymers such as poly lactic acid.

主权项

1. An organosolv process for producing bio-products by decomposing lignocellulosic materials comprising:
providing an initial lignin solvent comprising:
water,an acid, anda lignin dissolving chemical comprising butanol; placing the intial lignin solvent in contact with a biomass to form a circulation solvent comprising butanol, butyl acetate, and furfural; and recycling at least a portion of the circulation solvent by circulating the circulation solvent back into contact with the biomass for a period of time; and after the period of time, separating material from the circulation solvent.