Fuel Processing
AssigneeAnergy Limited
InventorsMichael Martella, Matthew Martella
Life of this patent
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Abstract
A system for processing carbonaceous in-feed material has a pyrolyzer kiln for pyrolysis the carbonaceous in-feed material, the kiln operating in a slow pyrolysis process in which the in-feed material is pyrolysed in the kiln for a period of minutes in order to produce primarily a gaseous output fraction; a steam reformer positioned downstream of the kiln to which combustion gasses from the pyrolyzer kiln are fed; a water scrubber positioned gas flow-wise downstream of the steam reformer; a methanation stage; a CO2 scrubbing stage. The system includes means for splitting the gas and directing a portion of the split gas back to the pyrolyzer kiln.
Claims20
A system for processing carbonaceous in-feed material, the system comprising;
- a pyrolyzer kiln for pyrolysis of the carbonaceous in-feed material, the kiln operating in a slow pyrolysis process in which the in-feed material is pyrolized in the kiln for a period of minutes in order to produce an off-gas;
- a steam reformer positioned downstream of the kiln and configured to produce at least hydrogen from the off-gas;
- a water scrubber positioned downstream of the steam reformer and configured to remove water from the off-gas;
- a methanation stage configured to produce methane from the off-gas;
- a carbon dioxide scrubbing stage configured to remove carbon dioxide from the off-gas;
- and
- splitting means for splitting the off-gas into portions and directing at least one portion of the off-gas to the kiln.
A method for processing carbonaceous in-feed material, the method comprising;
- feeding the carbonaceous in-feed material into a pyrolyzer kiln;
- pyrolyzing the in-feed material in the kiln for a period of minutes to produce an off-gas;
- directing the off-gas from the kiln to a steam reformer positioned downstream of the kiln;
- subsequently directing the off-gas through a water scrubber stage, a methanation stage, and a CO2 scrubbing stage, each stage being positioned downstream of the steam reformer;
- and
- splitting the off-gas into portions and directing at least one portion of the split off-gas to the kiln.
Dependencies are inferred from the claim text.