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US 9,162,231 B2Granted
Systems and methods for producing engineered fuel feed stocks from waste material
AssigneeAccordant Energy, LLC
InventorDingrong Bai
Life of this patent
Estimating the term…
Abstract
Systems and methods for producing engineered fuels from solid waste material are described herein. In some embodiments, a method includes receiving a waste stream at a multi-material processing platform and separating the waste stream to remove non-processable waste and marketable recyclables. The method further includes conveying processable materials to a material classification system and incorporating additives to produce an engineered fuel from the constituents of the waste stream.
Claims71
A system, comprising:
- a first bunker of waste constituents of a first type separated from a mixed municipal solid waste stream;
- a second bunker of waste constituents of a second type separated from the mixed municipal solid waste stream, the waste constituents of the first type being different from the waste constituents of the second type based on at least one of the bulk density of the waste constituents and the chemical composition of the waste constituents;
- a densifier configured and disposed to receive the waste constituents of the first and the second types from the first and the second bunkers and to compress the waste constituents of the first type and the waste constituents of the second type to form a densified engineered fuel feed stock;
- and
- a control unit configured to control a rate of withdrawal of a first amount of the waste constituents of the first type from the first bunker based on information associated with a BTU content of the waste constituents of the first type, the control unit configured to control a rate of withdrawal of a first amount of the waste constituents of the second type from the second bunker based on information associated with a BTU content of the waste constituents of the second type.
2 more elements
A system, comprising:
- a first bunker of waste constituents of a first type separated from a mixed municipal solid waste stream;
- a second bunker of waste constituents of a second type separated from the mixed municipal solid waste stream, the waste constituents of the first type being different from the waste constituents of the second type based on at least one of the bulk density of the waste constituents and the chemical composition of the waste constituents;
- a first densifier configured and disposed to receive the waste constituents of the first type from the first bunker and to compress the waste constituent of the first type and an additive to form a densified intermediate material;
- a grinder configured and disposed to receive the densified intermediate material from the first densifier and to grind the densified intermediate material;
- a second densifier configured and disposed to receive the ground intermediate material from the grinder and the waste constituents of the second type from the second bunker and to compress the ground intermediate material and the waste constituents of the second type to form a densified engineered fuel feed stock;
- and
- a control unit configured to control a rate of withdrawal of a first amount of the waste constituents of the first type from the first bunker based on information associated with a BTU content of the waste constituents of the first type, the control unit configured to control a rate of withdrawal of a first amount of the waste constituents of the second type from the second bunker based on information associated with a BTU content of the waste constituents of the second type.
4 more elements
A system, comprising:
- a first bunker of waste constituents of a first type separated from a mixed municipal solid waste stream;
- a second bunker of waste constituents of a second type separated from the mixed municipal solid waste stream, the waste constituents of the first type being different from the waste constituents of the second type based on at least one of the bulk density of the waste constituents and the chemical composition of the waste constituents;
- a first densifier configured and disposed to receive the waste constituents of the first type from the first bunker and to compress the waste constituent of the first type and an additive to form a densified intermediate material;
- a grinder configured and disposed to receive the densified intermediate material from the first densifier and to grind the densified intermediate material;
- a second densifier configured and disposed to receive the ground intermediate material from the grinder and the waste constituents of the second type from the second bunker and to compress the ground intermediate material and the waste constituents of the second type to form a densified engineered fuel feed stock;
- and
- a control unit configured to control a rate of withdrawal of a first amount of the waste constituents of the first type from the first bunker based on information associated with a chemical composition of the waste constituents of the first type, the control unit configured to control a rate of withdrawal of a first amount of the waste constituents of the second type from the second bunker based on information associated with a chemical composition of the waste constituents of the second type.
4 more elements
A system, comprising:
- a first bunker of waste constituents of a first type separated from a mixed municipal solid waste stream;
- a second bunker of waste constituents of a second type separated from the mixed municipal solid waste stream, the waste constituents of the first type being different from the waste constituents of the second type based on at least one of the bulk density of the waste constituents and the chemical composition of the waste constituents;
- a densifier configured and disposed to receive the waste constituents of the first and the second types from the first and the second bunkers and to compress the waste constituents of the first type, and the waste constituents of the second type to form a densified engineered fuel feed stock;
- and
- a control unit configured to control a rate of withdrawal of a first amount of the waste constituents of the first type from the first bunker based on information associated with a chemical composition of the waste constituents of the first type, the control unit configured to control a rate of withdrawal of a first amount of the waste constituents of the second type from the second bunker based on information associated with a chemical composition of the waste constituents of the second type.
2 more elements
Dependencies are inferred from the claim text.