Flash-pyrolysis in a cyclone
AssigneeNederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
InventorGerrit Brem
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Abstract
A process for the pyrolysis of carbonaceous material is carried out in a cyclone reactor which is fitted with enhanced filtering equipment. In addition the invention relates to the use of a cyclone fitted with a rotating filter as a pyrolysis reactor. By using a cyclone of the rotating separator type as a pyrolysis reactor, carbonaceous material, such as biomass, can effectively be converted in a product having excellent chemical properties and which product is free from particulate matter.
Claims19
Process for converting a feed stream comprising gas and particles into a pyrolysis product stream comprising the pyrolysis products of said particles and a solid stream comprising solids, the process comprising the steps of:
- i) introducing said feed stream into a cyclone;
- ii) applying heat to said feed stream in said cyclone to effect pyrolysis of at least part of said particles;
- and
- iii) substantially separating solids from gases by:
- a) effecting cyclone action, and
- b) operating a rotating filter which is connected to one of the gas exits of said cyclone, such that said pyrolysis product stream and said solid stream exit as separate streams, the pyrolysis product stream essentially free of solids with solids having a diameter from between about 0.1 μm and 50 μm being removed from the pyrolysis product stream exiting the rotating filter,
- the product stream exiting the cyclone and entering the rotating filter remains uncooled so that heat within the solids entering the rotating filter is not lost to cooling prior to the solids being separated from the pyrolysis product stream within the rotating filter so that the solids are removed from the pyrolysis product stream while preserving the heat within the solids.
Dependencies are inferred from the claim text.