Abstract: A pumping system for a hydrothermal biomass converter comprising one or more cylinders, each cylinder having an inlet end and an outlet end, and each cylinder having both a low pressure valve and a high pressure valve at both the inlet and the outlet end respectively, and each cylinder comprising an inner hydraulic actuator segment (1) which is separated from an inlet segment (2) on the inlet end and from an outlet segment (3) on the outlet end by a lower-pressure zone (8) sealed by two or more gaskets (7). Each cylinder further comprises an axially displaceable piston (5) fitted with a piston ring (6), which piston is adapted to move back and forth within the hydraulic actuator segment (1) so as to alternately displace volume in the inlet segment (2) when piston movement is towards the inlet end and in the outlet segment (3) when piston movement is towards the outlet end.
Abstract: The invention discloses a method for producing bio-fuel (BF) from a high-viscosity biomass using thermo-chemical conversion of the biomass in a production line (10) with pumping means (PM), heating means (HM) and cooling means (CM). The method has the steps of 1) operating the pumping means, the heating means and the cooling means so that the production line is under supercritical fluid conditions (SCF) to induce biomass conversion in a conversion zone (CZ) within the production line, and 2) operating the pumping means so that at least part of the production line is in an oscillatory flow (OF) mode. The invention is advantageous for providing an improved method for producing biofuel from a high-viscosity biomass. This is performed by an advantageous combination of two operating modes: supercritical fluid (SCF) conditions and oscillatory flow (OF).
Type:
Grant
Filed:
March 17, 2021
Date of Patent:
October 3, 2023
Assignee:
Circlia Nordic ApS
Inventors:
Ib Johannsen, Anders Peter Stubkjær Adamsen, Bjørn Sjøgren Kilsgaard, Viktor Milkevych