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US 7,960,325 B2Granted
Densified fuel pellets
AssigneeRenewable Densified Fuels, LLC
InventorMilan Kluko
Life of this patent
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Abstract
A biomass-based fuel pellet, such as a fuel pellet which includes thermoplastic polymeric material and a substantial amount of cellulosic material, e.g. cellulosic material derived from biomass source(s), is provided. The fuel pellet commonly includes about 5 to 15 wt. % of the thermoplastic polymeric material and at least about 75 wt. % cellulosic material. Optionally, the fuel pellet may comprise a lignin additive. Many embodiments of the fuel pellets are suitable for use in a coal-fired furnace and/or in other industrial boiler applications.
Claims23
A densified fuel pellet formed by a process comprising:
- compacting a mixture which includes
- a) about 5 to 15 wt.% molten thermoplastic polymeric material;
- b) at least about 75 wt.% cellulosic material;
- wherein the fuel pellet has a minimum dimension of at least about 1 cm and a heat value of at least about 9,500 Btu/lb (as is basis).
1 more element
Dependencies are inferred from the claim text.