Danmarks Tekniske Universitet

Niels Bech

Kim Dam-Johansen

Peter Ruhdal Jensen

Peter Arendt Jensen

Trung Ngoc Trinh

Rasmus Lundgaard Christensen

Peter A Jensen

The present invention relates to a rotor for a pyrolysis centrifuge reactor, said rotor comprising a rotor body having a longitudinal center axis, and at least one pivotally mounted blade being adapted to pivot around a pivot axis under rotation of the rotor body around the longitudinal center axis. Moreover, the present invention relates to a pyrolysis centrifuge reactor applying such a rotor.

Rotor for a pyrolysis centrifuge reactor

A method for collecting biomass, such as straw, and for producing a pyrolysis liquid, such as oil or tar, from the biomass, includes the step of collecting the biomass from a growth site, e.g. a field, by means of a mobile unit. The biomass is continuously fed into a pyrolysis apparatus accommodated by the mobile unit, as the mobile unit is moved across the growth site. While the biomass is processed in the pyrolysis apparatus, further biomass is simultaneously being collected. The pyrolysis apparatus may be a flash pyrolysis or fast pyrolysis apparatus relying on centrifugal forces for forcing biomass towards a reactive surface in a pyrolysis reactor. The mobile unit may be self-propelled.

Method and a mobile unit for collecting biomass

A fast pyrolysis apparatus () for producing pyrolysis liquid, such as oil or tar, char and pyrolysis gas from biomass, such as straw, comprises a centrifuge chamber () and a rotor () arranged to impart rotation on the biomass in the centrifuge chamber to force the biomass outwardly under the action of centrifugal forces. A furnace () arranged coaxially around the centrifuge chamber () maintains the temperature at an outer reactive wall of the centrifuge chamber at an elevated temperature to effect the pyrolysis process at or near the reactive wall. The apparatus comprises a condenser () arranged coaxially with and surrounded by the centrifuge chamber (). The apparatus may be accommodated by a mobile unit for simultaneously collecting biomass from a field and processing the biomass in the apparatus.

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Virum, Denmark

Niels Bech