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AssigneeNone recorded
InventorsTerry J. Logan, Ervin L. Faulmann
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Processes and systems are provided that include introducing ammonia liberated from organic waste to a coal burner in a coal burning power plant, preferably for NOx removal at the power plant. The ammonia is preferably either ammonia liberated upon drying a mixture of organic waste and coal combustion by-products or ammonia liberated when organic waste is mixed with coal combustion by-products and one or more alkaline additives. Also provided are processes and systems of fueling a coal burner of a power plant with coal and either a dried mixture of organic waste and coal combustion by-products, or a mixture of organic waste, coal combustion by-products and one or more alkaline additives. The present invention is further directed to mixtures of either organic waste and coal combustion by-products, or mixtures of organic waste, coal combustion by-products and alkaline additives made by the processes of the present invention.
A process comprising
A process comprising
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Organic fertilisers not covered by subclasses c05b, c05c: other organic fertilisers
Essentially based on materials of non-mineral origin: on animal substances or products obtained therefrom , e.g. manure
Essentially based on materials of non-mineral origin: on vegetable substances
Essentially based on materials of non-mineral origin: on sewage, house, or town refuse
Term end not estimated
The present invention is directed to processes and systems at coal burning power plants, which include introducing ammonia liberated from organic waste to a coal burner in the power plant.
The present invention is also directed to processes and systems of fueling a coal burner of a power plant with coal and either a dried mixture of organic waste and one or more coal combustion by-products, or a mixture of organic waste, one or more coal combustion by-products, and optionally one or more alkaline additives.
The present invention is further directed to dried mixtures of organic waste and coal combustion by-products or mixtures of organic waste, coal combustion by-products and optional alkaline additives made by the processes of the present invention.
FIG. 1 is a flow diagram of an organic waste drying and fuel feed system according to an embodiment of the present processes and systems.
FIG. 2 is a flow diagram of the organic waste mixing and fuel feed system of another embodiment of the present processes and systems.
The present invention will now be described in detail with regard to specific preferred embodiments of the invention, it being understood that these embodiments are intended only as illustrative examples and the invention is not to be limited thereto.
Coal-fired power plants must deal with the problems of NOx removal from exhaust gases, renewable fossil fuel power generation, odor, and dissipation of waste energy. The present inventors have arrived at processes and systems that advantageously synergistically incorporate processes of releasing ammonia from organic waste and reducing NOx emissions at a power plant, which utilizes waste (including for example, heat and/or by-products) from each process in the other process.
Organic waste produces ammonia under certain conditions, which excess ammonia may be used for example, to reduce NOx emissions at a power plant. The present invention provides processes at coal burning power plants, which include supplying liberated ammonia from waste treatment to a coal burning power plant, to preferably remove NOx from the plant.