Method of introducing dry sulfur oxide absorbent material into a furnace
October 29, 2005. 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 3851042 Coal fired furance Tangential firing system Method of firing a pulverized fuel-fired steam generator Method of reducing NOx and SOx emission Fine particulate feed system for fluidized bed furnace Tempering air heating on pulverizing high moisture fuels Method and apparatus for operating a vortex bed furnace Overfire air admission with varying momentum air streams Method of and apparatus for the desulfurization of flue gas of a coal-fired combustion process InventorAssigneeApplicationNo. 06/792392 filed on 10/29/1985US Classes:110/347, Burning pulverized fuel110/264, Having rotary flow means110/265, Having secondary air mixing means110/345Exhaust gas; e.g., pollution control, etc.ExaminersPrimary: Yuen, Henry C.Attorney, Agent or FirmInternational ClassesF23L 9/02 (20060101)F23J 7/00 (20060101) F23L 9/00 (20060101) AbstractEmissions of sulfur oxides produced during combustion of a sulfur-bearing fossil fuel in a furnace chamber 10 are reduced by injecting a sulfur oxide absorbing particulate into the product gases in an upper region 60 of the furnace chamber. The sulfur oxide absorbing material is dispersed into a quantity of air which is introduced in the furnace chamber through a plurality of nozzles 80, 82 and 84 disposed at different elevations. The air streams with entrained absorbent are introduced at each elevation tangent to an imaginary circle, with the radii of the circles of the elevations being different, thereby distributing the sulfur oxide absorbent over a wide volume of the furnace chamber. | |
