Furnaces – Process – Treating fuel constituent or combustion product
Patent
1995-07-27
1999-06-29
Lazarus, Ira S.
Furnaces
Process
Treating fuel constituent or combustion product
110203, 110212, 110213, 110214, F23J 1500
Patent
active
059153105
ABSTRACT:
A method of reducing NO.sub.x determines an NO.sub.x concentration profile within a zone of the furnace which is at a temperature below 2600.degree. F. A stream of fluid fuel is injected into at least one region of relatively high NO.sub.x concentration so that the fluid fuel mixes therein with the flue gas. The fluid fuel is natural gas, hydrogen, C.sub.x H.sub.y compounds, C.sub.x H.sub.y O.sub.z compounds or mixtures primarily of those compounds, in sufficient quantity to promote a reaction between nitrogen oxide in the flue gas and the fluid fuel, so as to substantially reduce nitrogen oxide content of the flue gas. The injector through which the fluid fuel is injected can be moveable and may have valves or deflectors to aid in directing the fluid fuel to regions of relatively high NO.sub.x concentration.
REFERENCES:
patent: 2671314 (1954-03-01), Lichty
patent: 4038032 (1977-07-01), Brewer et al.
patent: 4425159 (1984-01-01), Nixon
patent: 4528918 (1985-07-01), Sato et al.
patent: 4597342 (1986-07-01), Green et al.
patent: 4726192 (1988-02-01), Willis et al.
patent: 4779545 (1988-10-01), Breen et al.
patent: 4790743 (1988-12-01), Leikert et al.
patent: 4810186 (1989-03-01), Rennert et al.
patent: 5078064 (1992-01-01), Breen et al.
patent: 5141726 (1992-08-01), Breen et al.
patent: 5181475 (1993-01-01), Breen et al.
patent: 5441714 (1995-08-01), Oakes et al.
patent: 5520123 (1996-05-01), Chappell et al.
"Enhancing the Use of Coals by Gas Reburning--Sorbent Injection," submitted at the Energy and Energy and Environmental Research Corporation (EERC), First Industry Panel Meeting, Pittsburgh, PA, Mar. 15, 1988.
"GR-SI Process design Studies for Hennepin Unit #1--Project Review," Energy and Environmental Research Corporation (EERC), submitted at the Project Review Meeting on Jun. 15-16, 1988.
"Reduction of Sulfur Trioxide and Nitrogen Oxides by Secondary Fuel Injection, " Wendt, et al.; Fourteenth Symposium (International) on Combustion, The Combustion Institute, 1973, pp. 897-904.
"Mitsubishi `MACT` In-Furnace NOx Removal Process for Steam Generator", Sakai et al.; published at the U.S.-Japan NOx Information Exchange, Tokyo, Japan, May 25-30, 1981.
"Application of Reburning for NOx Control to a Firetube Package Boiler", Mulholland et al., Journal of Engineering for Gas Turbines and Power, Jul. 1985, vol. 107, pp. 739-743.
"Gas Reburning and Gas Injection in Combination with SNCR in a Waste Incineration Plant", Karll, International Gas Reburn Technology Workshop, Feb. 7-9, 1995, Malmo.
"Optimization of Natural Gas Reburning for Controlling Pollutant Emissions from Oil Fired Boilers", E. C. Moller et al., 1988 Spring Meeting, Western State Section/The Combustion Institute, Salt Lake City, Utah, Mar. 21-22, 1988.
Breen Bernard P.
Gabrielson James E.
Hura Harjit S.
Ciric Ljiljana V.
Consolidated Natural Gas Service Company
Lazarus Ira S.
LandOfFree
Apparatus and method for NO.sub.x reduction by selective injecti does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for NO.sub.x reduction by selective injecti, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for NO.sub.x reduction by selective injecti will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1366416