Solid fuel and process for combustion of the solid fuel
First Claim
1. A solid fuel comprising a recycled lignin-comprising residue from anaerobic digestion of a ligno-cellulosic organic material which produces said recycled lignin-comprising residue with a heat content value of approximately 8,500 to 10,500 Btu/lb dry matter, said ligno-cellulosic organic material being selected from the group consisting of municipal solid waste, raw sewage sludge, industrial waste, and mixtures thereof.
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Accused Products
Abstract
A solid fuel containing a recycled residue from anaerobic fermentation or anaerobic digestion of an organic material. The solid fuel can also contain a volatile solid fossil fuel. The residue is preferably derived from an anaerobic digestion process of municipal solid waste, raw sewage sludge, biomass feedstock, industrial waste, agricultural waste or mixtures thereof. The volatile solid fossil fuel preferably contains a coal constituent of lignite, anthracite coal, meta-anthracite coal, bituminous coal and/or sub-bituminous coal. Regardless of whether the solid fuel contains only recycled residue or recycled residue bound with a volatile solid fossil fuel, the solid fuel can be formed into pellets or energy cubes.
113 Citations
10 Claims
- 1. A solid fuel comprising a recycled lignin-comprising residue from anaerobic digestion of a ligno-cellulosic organic material which produces said recycled lignin-comprising residue with a heat content value of approximately 8,500 to 10,500 Btu/lb dry matter, said ligno-cellulosic organic material being selected from the group consisting of municipal solid waste, raw sewage sludge, industrial waste, and mixtures thereof.
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6. In a process for combustion in a combustion chamber wherein a combustible mixture is introduced into and combusted within the combustion chamber and combustion products are discharged from said combustion chamber, the improvement comprising:
- mixing combustion air with a recycled lignin-comprising residue from anaerobic digestion of a ligno-cellulosic organic material to form said combustible mixture wherein said recycled lignin-comprising residue has a heat content value of approximately 8,500 to 10,500 Btu/lb dry matter, said recycled lignin-comprising residue being derived from at least one of municipal solid waste, raw sewage sludge and industrial waste.
- View Dependent Claims (7, 8, 9, 10)
Specification