Process for the hydrothermal treatment of high molar mass biomaterials
AssigneeValmet Technologies Oy
InventorsVidar Grönberg, Hanne Wikberg, Hans-Peter Hentze, Ali Harlin, Anna-Stiina Jääskeläinen
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Abstract
The present invention concerns a process for the conversion of biomaterials into structural carbon products, particularly utilizing a hydrothermal treatment step that is carried out on a high molar mass organic starting material having a carbon content of >40 wt % of the dry matter. The invention also concerns a structural carbon product obtained using such a process, which has well-defined physico-chemical properties, e.g. in terms of surface area, carbon content, density, size and shape.
Claims14
A process for the conversion of raw biomaterial into structural carbon products or their aggregates, comprising:
- prior to a pressurized hydrothermal treatment step, separating an organic starting material having a dry matter carbon content of >40 wt % from the raw biomaterial;
- and
- utilizing solely the organic starting material having a dry matter carbon content of >40 wt % from the separating step, subjecting the organic starting material to the pressurized hydrothermal treatment step to provide the structural carbon products or their aggregates, wherein the pressurized hydrothermal treatment step is done at a temperature of from 80 to 600° C. and at a pressure of >1 bar.
Dependencies are inferred from the claim text.