Method for reducing NO.sub.x in the exhaust streams of internal

Details Method for reducing NO.sub.x in the exhaust streams of internal Method for reducing NO.sub.x in the exhaust streams of internal

1995-03-27

1996-12-17

Lewis, Michael

Internal-combustion engines

Miscellaneous

Fuels, lubricants and additives

423235, 423212, 44335, 60 39461, F02B 7512, C10L 122

Patent

active

055842658

ABSTRACT:
The invention discloses a method of reducing the concentration of NO.sub.x in the exhaust streams of internal combustion ignitions wherein a selected producing agent is introduced into the combustion chamber of such an engine via the fuel and/or air feed stream introduced into the combustion chamber. Also disclosed is an apparatus for reducing the concentration of NO.sub.x in the exhaust streams of internal combustion engines having a piston-cylinder assembly having an air fuel mixture contained therein, a means for storing a selective reducing agent selected from the group consisting of ammonia, hydrazine and cyanuric acid and a means for introducing the reducing agent into the lean air/fuel mixture before combustion occurs such that upon combustion of the air/fuel mixture, the reducing agent decomposes to react with one or more products of combustion to produce an engine exhaust stream having a reduced concentration of NO.sub.x.

REFERENCES:
patent: 3630184 (1971-12-01), Wolf et al.
patent: 3689195 (1972-09-01), Beesch et al.
patent: 3846981 (1974-11-01), Paczkowski
patent: 3900554 (1975-08-01), Lyon
patent: 4028275 (1977-06-01), Sakai et al.
patent: 4166724 (1979-09-01), Kanao
patent: 4208386 (1980-06-01), Arand et al.
patent: 4325924 (1982-04-01), Arand et al.
patent: 4335084 (1982-06-01), Brogan
patent: 4509492 (1985-04-01), Ochiai et al.
patent: 4541367 (1985-09-01), Lindberg
patent: 4544388 (1985-10-01), Rao et al.
patent: 4621593 (1986-11-01), Rao et al.
patent: 4655037 (1987-04-01), Rao
patent: 4670020 (1987-06-01), Rao
patent: 4719094 (1988-01-01), Rieckert et al.
patent: 4731231 (1988-03-01), Perry
patent: 4744962 (1988-05-01), Johnson et al.
patent: 4800068 (1989-01-01), Perry
patent: 4861567 (1989-08-01), Heap et al.
patent: 4886650 (1989-12-01), Perry
patent: 4908193 (1990-03-01), Perry
patent: 4966873 (1990-10-01), Iida et al.
patent: 4973399 (1990-11-01), Green et al.
patent: 4978514 (1990-12-01), Hofmann et al.
patent: 5058514 (1991-10-01), Mozes et al.
patent: 5087431 (1992-02-01), Gardner-Chavis et al.
patent: 5199959 (1993-04-01), Sung et al.
patent: 5219955 (1993-06-01), Sung et al.
patent: 5234477 (1993-08-01), Gwyn
patent: 5307772 (1994-05-01), Rao et al.
"Nitric Oxide: Surface Reactions and Removal from Auto Exhaust.", by M. Shelef, Catalysis Reviews-Science and Engineering, vol. 11(1), 1975, pp. 1-40.
"A Chemical Kinetic Model for the Selective Reduction of Nitric Oxide by Ammonia", by James A. Miller et al., Combustion and Flame, 1981, vol. 43, pp. 81-98.
"Kinetic Modeling of the Oxidation of Ammonia in Flames", by James A. Miller et al., Combustion Science and Technology, 1983, vol. 34, pp. 149-176.
"Kinetics of the reactions of NCO radicals with H2 and NO using laser photolysis-laser induced fluorescence", by R. A. Perry et al., Journal of Chewmistry and Physics, vol. 82(12), Jun. 15, 1985, pp. 5485-5488.
"Rapid reduction of nitrogen oxides in exhaust gas streams" by R. A. Perry et al., Nature, vol. 324, Dec. 18/25, 1986, pp. 657-658.
"Thermal DeNOx: Controlling nitrogen oxides emissions by a noncatalytic process", Richard K. Lyon, Environ. Sci. Technol., vol. 21, No. 3, 1987, pp. 231-235.
"An advanced selective reduction process for NOx control", by M. P. Heap et al., Nature, vol. 35, Oct. 13, 1988, pp. 620-622.
"Comparison of Nitric Oxide Removal by Cyanuric Acid and by Ammonia", by J. A. Caton et al., Combust. Sci. and Tech., 1989, vol. 65, pp. 277-293.
"Limitations on the rapid reduction of nitrogen oxides in exhaust gas streams", by Brian G. Wicke et al., Nature, vol. 338, Apr. 6, 1989, pp. 492-493.
"Early Engine Emission Reduction Test Results with RAPRENOX", by Ralph J. Slone et al., Cummins Engine Co., Inc., pp. 457-464.
"Cyanuric and Isocyanuric Acids", Encyclopedia of Chemical Technology, vol. 7, pp. 397-399.
"Material Safety Data Sheet on Cyanuric Acid H 94% Granular", Product #CPE650160, From The Olin MSDS Control Group, Rev. Jan. 1, 1990, 12 pages.
"Catalyst Technologies to Meet Future Emission Requirements for Gasoline-Fueled Vehicles", by Jerry C. Summers, Clean Air Technology News, Summer 1991, pp. 1-2.
"Monopropellant Hydrazine Design Data", Rocket Research Corporation, pp. 11-68.

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