FIELD: manufacturing technology.
SUBSTANCE: invention relates to a method of processing lignin-based material. Method involves treatment of lignin extracted from lignocellulose material by hydrothermal carbonisation at high temperature, resulting in carbonated lignin with high content of carbon, and stabilizing the obtained carbonised lignin in an inert atmosphere at a stabilization temperature which exceeds the temperature of the hydrothermal carbonisation method. Stabilization process involves increasing the temperature from the initial temperature to the stabilization temperature which is 300–600 °C, holding the obtained carbonised lignin at the stabilization temperature for 10 minutes – 10 hours and converting the obtained carbonised lignin into a stable stabilized form.
EFFECT: obtaining a more deeply purified product.
17 cl, 2 dwg, 2 ex, 1 tbl
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