Method and burner for introducing fuel to a kiln
July 1, 2019. 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 ReferencesSolid-fuel burner Burner for solid fuels Process and a means for burning solid fuels, preferably coal, turf or the like, in pulverized form Method of and apparatus for burning liquid and/or solid fuels in pulverized form Apparatus for low concentration NOx combustion Low NOx short flame burner Burner configuration, particularly for gas turbines, for the low-pollutant combustion of coal gas and other fuels Dual fuel mixer for gas turbine combustor Low NOx short flame burner with control of primary air/fuel ratio for NOx reduction Patent #: 5697306 InventorApplicationNo. 346518 filed on 07/01/1999US Classes:110/264, Having rotary flow means110/261, Powdered solid fuel110/262, Alternate fuel431/183, Row of stationary blades coaxial with disperser whirls air431/188Air chamber with inlet control surrounds disperser at wallExaminersPrimary: Ferensic, Denise L.Assistant: Rinehart, K. B. Attorney, Agent or FirmForeign Patent References
International ClassesF23C 001/10F23C 001/12 Foreign Application Priority Data1997-03-07 DKAbstractA method and apparatus for introducing solid, liquid or gaseous fuel into a burning zone of a rotary kiln for manufacturing cement clinker. Fuel is conducted through a duct or ducts and primary air is conducted through at least two annular ducts arranged substantially concentrically with, and around, the fuel duct(s), the portion of air in one of the air ducts flowing substantially axially, whereas the portion of air in the second of the air ducts comprises air which has a rotary component about the center axis of the burner, and wherein the amount of primary air in the two portions is independently controlled, such that the two portions of primary air are mixed at a lower velocity in a collecting duct into a single primary mixed airstream having a desired axial/rotary flow characteristic, and wherein this airstream is subsequently accelerated up to a desired, higher discharge velocity.Field of SearchINCLUDING FLUID FUEL BURNERPowdered solid fuel Alternate fuel UTILIZING POWDERED FUEL Having rotary flow means Having secondary air mixing means Shiftably mounted disperser; or flame shaper Feeds discharged coaxially Air chamber with inlet control surrounds disperser at wall Duct with air whirling means surrounds disperser Row of stationary blades coaxial with disperser whirls air Pivotally adjustable blades Whirling, recycling material, or reversing flow in an enclosed flame zone | |
