Process and system for producing engineered fuel
First Claim
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1. A process for extracting materials from municipal solid waste, the process comprising the steps of:
- providing a municipal solid waste comprising a first set of waste materials, a second set of waste materials and a third set of waste materials, wherein the first set of waste materials comprises ferrous materials, the second set of waste materials comprises one or more of fibers and rigid plastics, and the third set of waste materials comprises one or more of foam plastics and film plastics;
shredding the municipal solid waste;
removing all or substantially all of the first set of waste materials from the municipal solid waste;
separating the second set of waste materials from the third set of waste materials in the municipal solid waste;
proportionally recombining the second set of waste materials and the third set of waste materials to form a first recombined stream;
proportionally mixing a clean stream with the recombined stream to form a second recombined stream, wherein the clean stream comprises fibers and clean plastics, and wherein the clean stream does not originate from the municipal solid waste; and
densifying the second recombined stream.
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Abstract
A process and system for producing an engineered fuel product that meets customer specifications for composition and combustion characteristics is provided. The engineered fuel product is preferably a high-BTU, alternative fuel that burns cleaner than coal or petroleum coke (petcoke) and has significantly reduced NOx, SO2 and GHG emissions.
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Citations
13 Claims
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1. A process for extracting materials from municipal solid waste, the process comprising the steps of:
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providing a municipal solid waste comprising a first set of waste materials, a second set of waste materials and a third set of waste materials, wherein the first set of waste materials comprises ferrous materials, the second set of waste materials comprises one or more of fibers and rigid plastics, and the third set of waste materials comprises one or more of foam plastics and film plastics; shredding the municipal solid waste; removing all or substantially all of the first set of waste materials from the municipal solid waste; separating the second set of waste materials from the third set of waste materials in the municipal solid waste; proportionally recombining the second set of waste materials and the third set of waste materials to form a first recombined stream; proportionally mixing a clean stream with the recombined stream to form a second recombined stream, wherein the clean stream comprises fibers and clean plastics, and wherein the clean stream does not originate from the municipal solid waste; and densifying the second recombined stream. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A process for extracting materials from municipal solid waste, the process comprising the steps of:
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providing a municipal solid waste comprising a first set of waste materials, a second set of waste materials and a third set of waste materials, wherein the first set of waste materials comprises ferrous materials, the second set of waste materials comprises one or more of fibers and rigid plastics, and the third set of waste materials comprises one or more of foam plastics and film plastics; proportionally mixing a clean stream with the municipal solid waste comprising the first set of waste materials, the second set of waste materials and the third set of waste materials to form a combined stream, wherein the clean stream comprises fibers and clean plastics, and wherein the clean stream does not originate from the municipal solid waste; shredding the combined stream; removing all or substantially all of the first set of waste materials from the combined stream; separating the second set of waste materials from the third set of waste materials, wherein the second set of waste materials and the third set of waste materials each contain an amount of fibers and clean plastics from the clean stream; proportionally recombining the second set of waste materials and the third set of waste materials to form a recombined stream; and densifying the recombined stream.
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13. A process for extracting materials from municipal solid waste, the process comprising the steps of:
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providing a municipal solid waste comprising a first set of waste materials, a second set of waste materials and a third set of waste materials, wherein the first set of waste materials comprises ferrous materials, the second set of waste materials comprises one or more of fibers and rigid plastics, and the third set of waste materials comprises one or more of foam plastics and film plastics; shredding the municipal solid waste; removing all or substantially all of the first set of waste materials from the municipal solid waste; proportionally mixing a clean stream with the municipal solid waste comprising the second set of waste materials and the third set of waste materials after all or substantially all of the first set of waste materials has been removed, wherein the clean stream comprises fibers and clean plastics, and wherein the clean stream does not originate from the municipal solid waste; separating the second set of waste materials from the third set of waste materials in the municipal solid waste, wherein the second set of waste materials and the third set of waste materials each contain an amount of fibers and clean plastics from the clean stream; proportionally recombining the second set of waste materials and the third set of waste materials to form a recombined stream; and densifying the recombined stream.
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Specification