Patent ID: 11878983
Assignee: CIRCA GROUP LIMITED
Field: Organic fine chemistry (Chemistry)
Classification: CPC C  B | IPC B  C

Claim 14:
15. Apparatus for producing levoglucosenone according to the method defined in claim 1 comprising,
a dryer for receiving and reducing the water content of the cellulosic material and to deliver it by a first feeder to a mixer vessel for combining components of the pre-mix,
a second feeder arranged to continuously transfer the pre-mix from the mixer vessel and to inject it into a pyrolysis zone of a fluidised bed pyrolysis reactor through a pre-mix inlet,
a gas inlet configured to introduce a fluidising gas into a fluidised bed of thermally stable unreactive particulate solid in the pyrolysis reactor,
a heater for maintaining the temperature in the fluidised bed within the range 250° C. to 450° C.,
an outlet arranged to withdraw a gaseous stream containing entrained char solids from the pyrolysis reactor,
a separator arranged to separate char solids from the gaseous stream, and
at least one fractionating condenser assembly arranged to receive the separate gaseous stream from the separator to separately condense levoglucosenone and the solvent therefrom.