Pyrolyser
AssigneeProcess Limited
InventorRobert D. Eden
Life of this patent
Estimating the term…
Abstract
The present invention provides a pyrolysis system comprising an entrained flow pyrolyser having an opening through which biomass can be added. The pyrolyser also has an inlet for hot exhaust gas, an outlet for pyrolysed biomass and an outlet for syngas. The system has a burner for producing hot exhaust gas and a conduit between the burner and the hot exhaust gas inlet. A syngas extraction means for extracting syngas from the pyrolyser. The syngas extraction means extracts syngas from the pyrolyser at a rate such that the internal pressure within the pyrolyser never exceeds the pressure external to the pyrolyser.
Claims21
An pyrolysis system comprising:
- an entrained flow pyrolyser having:
- an opening through which biomass can added;
- an inlet for hot exhaust gas;
- an outlet for pyrolysed biomass and an outlet for syngas;
- a burner for producing hot exhaust gas;
- a conduit between the burner and the hot exhaust gas inlet;
- a syngas extractor for extracting syngas from the pyrolyser;
- wherein:
- the syngas extractor is configured to extracts syngas from the pyrolyser at a rate such that the internal pressure within the pyrolyser never exceeds the pressure external to the pyrolyser.
A method of producing clean syngas comprising:
- pyrolysing biomass to produce a stream of hot syngas;
- passing the hot syngas through a condenser to reduce its temperature until 100% tar saturation is reached;
- continuing to cool the syngas, in the condenser, so as to condense tar from the syngas so as to reduce the 100% tar saturation temperature;
- re-heating the syngas, downstream of the condenser, so as to reduce the tar saturation to below 100%, and
- maintaining the syngas at a temperature at which the tar saturation is below 100%.
An apparatus for producing clean syngas comprising:
- a pyrolyser in which biomass is pyrolysed to produce a stream of hot syngas;
- at least one condenser, downstream of said pyrolyser, through which the hot syngas passes so as to reduce its temperature until 100% tar saturation is reached thereby causing tar to condense from said syngas;
- and
- means of re-heating the syngas, downstream of the condenser, so as to reduce the tar saturation of the syngas to below 100%.
21-24. (canceled)
Dependencies are inferred from the claim text.