Two-stage investigative method for the chemical fractionation of lignocellulose

摘要

The present invention relates to a two-stage investigative method for the chemical fractionation of lignocellulose. In this case, in a first step, the lignocellulose with water vapor or water at temperatures above 100°C. and higher pressures pretreated. In a second step is carried out, an extraction of the pretreated lignocellulose with an extraction solution, wherein lignin is released from the lignocellulose. A characterizing feature of the process according to the invention in this case is that between the two stages of the temperature does not drop below 80°C. is reduced.n="28"