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US 8,997,664 B2Granted
Gasification combustion system
AssigneeCovanta Energy Corporation
InventorsRon Broglio, Hanwei Zhang, Robert Barker, Stephen Goff
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Abstract
A two stage refuse gasification combustion system for processing refuse is disclosed. The system may contain features such as an advancer, a first and second gasifier, a gas regulator, and a post combustor. Additionally, methods for regulating gas and advancing refuse through a two stage refuse gasification combustion system are disclosed.
Claims12
A two stage refuse gasification combustion system for processing refuse comprising an advancer, a first and second gasifier, a first gas regulator, a central controller, and a post combustor, wherein:
- said advancer comprises a means for moving the refuse from the first gasifier to the second gasifier;
- said post combustor comprises a connection to the first and second gasifier;
- said first gas regulator comprises an input port for receiving gas, an output port for outputting gas, and valves for regulating gas flow in the system;
- said second gasifier completes combustion of unreacted carbon received from the first gasifier and wherein hot combustion gas from the second gasifier is recirculated to the first gasifier;
- and
- said central controller contains software for causing the controller to perform the steps of:
- controlling the speed of the advancer;
- controlling the flow rate of gas through a first and second gas splitter;
- and
- controlling the positioning of the valves in the first gas regulator.
7 more elements
Dependencies are inferred from the claim text.