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US 8,382,863 B2Granted
Engineered fuel feed stock
AssigneeRe Community Energy, LLC
InventorsJames W. Bohlig, Dingrong Bai
Life of this patent
Estimating the term…
Abstract
Disclosed are novel engineered fuel feed stocks, feed stocks produced by the described processes, and methods of making the fuel feed stocks. Components derived from processed MSW waste streams can be used to make such feed stocks which are substantially free of glass, metals, grit and noncombustibles. These feed stocks are useful for a variety of purposes including as gasification and combustion fuels.
Claims17
An engineered fuel feed stock having:
- a carbon content of between about 70 wt % and about 80 wt %,
- a hydrogen content of between about 4 wt % and about 9 wt %,
- an ash content of less than about 10 wt %,
- wherein
- the O/C ratio is between about 0.05 and about 0.12, and
- wherein the engineered fuel feed stock contains biodegradable waste and non-biodegradable waste and substantially no glass, metals, grit, and noncombustible waste;
- produced by a process comprising:
- a) receiving a plurality of MSW waste feeds at a material recovery facility;
- b) inventorying the components of the plurality of MSW waste feeds of step a) as they pass through a material recovery facility based on the chemical molecular characteristics of the components;
- c) comparing the chemical molecular characteristics of the components of the plurality of MSW waste feeds inventoried in step b) with the chemical molecular characteristics of the engineered fuel feed stock;
- d) optionally adding additional components of the plurality of MSW waste feeds which contain chemical molecular characteristics, whose sum together with the inventoried components of step b) equal the chemical molecular characteristics of the engineered fuel feed stock.
8 more elements
An engineered fuel feed stock produced by a process comprising:
- a) separating a plurality of MSW waste feeds at a material recovery facility into a plurality of MSW waste components based on chemical molecular characteristics;
- b) selecting chemical molecular characteristics for the engineered fuel feed stock comprising
- a carbon content of between about 70 wt % and about 80 wt %,
- a hydrogen content of between about 4 wt % and about 9 wt %,
- an ash content of less than about 10 wt %,
- an O/C ratio of between about 0.05 and about 0.12,
- wherein the engineered fuel feed stock contains biodegradable waste and non-biodegradable waste and substantially no glass, metals, grit, and noncombustible waste;
- c) selecting MSW waste components from step a) whose sum of chemical molecular characteristics equals the chemical molecular characteristics selected in step b);
- d) optionally adding other fuel components to the selection of step c) if the chemical molecular characteristics of the MSW waste components selected in step c) do not equal the chemical molecular characteristics of the selection of step b);
- and
- e) mixing the components of step c) and optionally of step d).
8 more elements
Dependencies are inferred from the claim text.