Aqueous ammonia injection scheme
Patent 5098680 Issued on March 24, 1992. Estimated Expiration Date: 
October 15, 2010. 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.
October 15, 2010. 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 ReferencesProcess for reducing the nitrogen oxide content of coke oven gases Method of removing sulfur oxides and nitrogen oxides by dry process Patent #: 4500501 InventorsAssigneeApplicationNo. 597265 filed on 10/15/1990US Classes:423/235, Nitrogen or nitrogenous component423/239.1Utilizing solid sorbent, catalyst, or reactantExaminersPrimary: Heller, Gregory A.Attorney, Agent or FirmInternational ClassesC01B 021/00B01J 008/00 AbstractAn improved process for reducing nitrogen oxide emissions to the atmosphere comprises the injection of ammonia vapor, formed by the vaporization of an aqueous ammonia solution, into a combustion effluent. A dilute aqueous ammonia phase, produced by such vaporization, may also be injected, either in vapor or liquid form, into a combustion effluent. Temperature and pressure control of such vaporization may be used to maintain the desired concentration of ammonia injected into the combustion effluent.Field of SearchNitrogen or nitrogenous component |
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