초록 ▼

A cellulose-containing biomass such as wood is liquefied by heat-treatment under a pressurized condition in the presence of water and a neutral, oxygen-containing organic liquid such as an ester, ether, ketone or alcohol. An alkaline catalyst such as potassium carbonate may be added to accelerate th

A cellulose-containing biomass such as wood is liquefied by heat-treatment under a pressurized condition in the presence of water and a neutral, oxygen-containing organic liquid such as an ester, ether, ketone or alcohol. An alkaline catalyst such as potassium carbonate may be added to accelerate the liquefaction when the organic liquid is one other than acetone. Also provided is a process for the liquefaction of a cellulose-containing biomass including heat-treating the biomass in an aqueous medium in the pressurized atmosphere of an inert gas or steam at a temperature of 250°-385°C. in the presence of an alkaline catalyst in an amount of 0.01-0.1 part by weight per one part by weight of the biomass on the dry basis.

대표청구항 ▼

A process for the liquefaction of a cellulose-containing biomass to produce a liquefied product, said process comprising: (a) feeding to a reaction vessel the biomass, water and a neutral oxygen-containing organic liquid to provide an admixture in said vessel consisting essentially of said biomass,

A process for the liquefaction of a cellulose-containing biomass to produce a liquefied product, said process comprising: (a) feeding to a reaction vessel the biomass, water and a neutral oxygen-containing organic liquid to provide an admixture in said vessel consisting essentially of said biomass, said organic liquid and water, the total of the oxygen-containing organic liquid and water in said admixture being 5-20 parts by weight per part by weight of the biomass on the dry basis and the amount of oxygen-containing organic liquid in said admixture being 5-80% of the total of said liquid and water; (b) heating said admixture within said vessel to 200°-400°C. at 3-100 atm pressure to produce, within said vessel, a liquefied product in the form of an oily liquid phase coexistent with a separate aqueous phase; (c) separating said oily liquid phase from said aqueous phase and recovering said separated oily liquid phase as a liquefied product; and (d) heating said separated oily liquid phase to distill off low boiling components and recovering a liquefied product of increased calorific value as the distillation residue.