Method and apparatus for pollution control in exhaust gas streams from fossil fuel burning facilities
October 16, 2018. 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 3900554 Method of injecting ammonia into a flue for waste gases Method of hydrolyzing urea contained in waste water streams Catalytic method for hydrolyzing urea Integrated ammonia-urea process Non-catalytic method for reducing the concentration of NO in combustion effluents by injection of ammonia at temperatures greater than about 1300 degree K Apparatus for preheating combustion air, accompanied by simultaneous reduction of NOx contained in the flue gases Non-catalytic method for reducing the concentration of NO in combustion effluents by injection of ammonia at temperatures from about 975 degrees K. to 1300 degrees K. Reduction of acidic emissions from combustion of sulfur-laden fuels Control of addition of conditioning agents to flue gas InventorsAssigneeApplicationNo. 173959 filed on 10/16/1998US Classes:423/239.1, Utilizing solid sorbent, catalyst, or reactant423/235, Nitrogen or nitrogenous component423/352, Ammonia or ammonium hydroxide423/358From organic material containing nitrogenExaminersPrimary: Griffin, Steven P.Assistant: Medina, Maribel Attorney, Agent or FirmForeign Patent References
International ClassesB01J 008/00C01B 021/00 C01C 001/00 C01C 001/08 AbstractThis invention relates to pollution control requirements for fossil-fuel burning facilities, such as power plants, and, more particularly, to a method for providing a safe and economical supply of ammonia, from a urea feedstock, when ammonia is desired or necessary to initiate, cause and/or supplement the removal of one or more pollutants from an exhaust gas stream. |
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