| 摘要 |
FIELD: chemistry.SUBSTANCE: lignocellulose biomass is fed at first pressure and first temperature. The biomass includes a first solid fraction which contains insoluble lignin and a first liquid fraction which contains soluble Csaccharides, and soluble lignin. Before said phased feeding, at least part of the Csaccharides is removed from the biomass by fractionation. The first biomass pressure is lowered to a second pressure while virtually simultaneously lowering the first biomass temperature to a second temperature. Virtually simultaneous reduction of second pressure and second temperature to third pressure and third temperature is carried out to deposit soluble lignin into the first liquid fraction. A mixture is formed, which contains a second solid fraction which contains insoluble lignin, and deposited lignin, as well as a second liquid fraction which contains soluble Csaccharides. The invention enables to obtain a lignin product with small particles for improving combustion efficiency and preventing typical problems of equipment clogging and high degree of energy recovery.EFFECT: reduced clogging of equipment with lignin when processing lignocellulose biomass.29 cl, 1 dwg, 1 tbl, 1 ex |
