Patent ID: 9381490
Filing Date: 2016-07-05
CPC Classification: B01J,C10L,C12M,C13K,Y02E

Claim Text:
1. A process for the pretreatment of biomass comprising the following steps: a) heating the biomass to a temperature of no more than 110° C and at least 100° C. in a first exchanger, wherein the heat needed comes from the hot water generated in a second scraped surface exchanger; b) heating the biomass obtained in step a) to a temperature between 150 and 175° C. in a first scraped surface exchanger at a pressure between 0.6-0.8MPa (6-8 bar); c) thermal hydrolyzing the biomass obtained in step b) at a temperature between 150 and 175° C. at a pressure between 0.6-0.8 MPa (6-8 bar) in a maintenance area; and d) cooling the thermal hydrolyzed biomass for the subsequent biological treatment thereof to a temperature equal to or lower than 60° C. in the second scraped surface exchanger with cooled water from the first exchanger and which is then cooled to a temperature of 40° C. in a second exchanger.