Patent ID: 11946090
Assignee: VALMET AB
Field: Biotechnology (Chemistry)
Classification: CPC C  D  Y | IPC C

Claim 13:
14. A treatment process for biomass material comprising the steps of:
in a first dewatering stage, receiving the biomass material and removing liquid from the biomass material;
in a first filtrate tank, collecting the removed liquid from the first dewatering stage;
in an addition stage operatively coupled to the first dewatering stage, receiving the dewatered biomass material and adding an acid-containing solution to the biomass material, the addition stage comprising inlets for adding the acid-containing solution;
in a reactor stage, receiving the biomass material treated in the addition stage and performing a pre-hydrolysis process on the biomass material; and
using a filtrate feeder, feeding the liquid from the first filtrate tank to the reactor stage, so as to recycle the liquid collected from first dewatering stage to the reactor stage.