Process and apparatus for emissions reduction from waste incineration
February 24, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3781162 Waste disposal facility and process therefor Reduction of gaseous pollutants in combustion flue gas Reduction of gaseous pollutants in combustion flue gas Reduction of gaseous pollutants in combustion flue gas Method of operating a MHD power plant Fluidized bed residential heating system Garbage incinerator Wood burning furnace Fluidized bed combuster process InventorsAssigneeApplicationNo. 021896 filed on 02/24/1993US Classes:110/245, Fluidized bed of noncombustible particles110/342, Treating fuel constituent or combustion product110/345Exhaust gas; e.g., pollution control, etc.ExaminersPrimary: Yuen, Henry C.Attorney, Agent or FirmForeign Patent References
International ClassF23B 007/00AbstractA process for combustion of the combustible material includes introducing the combustible material into the combustion chamber, advancing the combustible material through the combustion chamber, supplying combustion air to the combustion chamber for drying and partially combusting the combustible material and final ash burnout in a primary combustion zone, and removing ash products from the combustion chamber. The fuel or fuel/carrier fluid mixture is supplied into the combustion chamber to create an oxygen deficient secondary combustion zone for NOx reduction and other nitrogen bearing compounds decomposition. An oxidizing fluid is supplied into the combustion chamber above the oxygen deficient secondary combustion zone for thorough mixing with combustion products and at least partial burnout of combustibles in an oxidizing tertiary combustion zone. A furnace for combustion in accordance with this process is also disclosed wherein a combustion chamber is configured such that combustible material can be advanced from a drying zone, to a combustion zone, to a burnout zone, and then into an ash pit. An air source provides air for drying, combustion and burnout in a primary combustion zone. Fuel or a fuel/carrier fluid mixture is injected above the primary combustion zone to create an oxygen deficient secondary combustion zone, to reduce NOx and decompose other nitrogen bearing compounds entering the secondary combustion zone. An oxidizing fluid is injected into the combustion chamber above the oxygen deficient secondary combustion zone.Other References
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