Method and system for the disposal of coal preparation plant was

Details Method and system for the disposal of coal preparation plant was Method and system for the disposal of coal preparation plant was

1997-07-22

1999-11-23

Lazarus, Ira S

Furnaces

Process

Treating fuel constituent or combustion product

110346, 110347, 110233, 110238, 110263, 110266, 110264, F23B 700, F23D 102

Patent

active

059880813

ABSTRACT:
A method and system for the use of waste coal fines to reduce nitrogen oxides emissions from a coal-fired cyclone boiler. A coal water slurry including waste coal fines is injected as a co-firing fuel into a cyclone barrel of the cyclone boiler to partially oxidize the coal water slurry in a central portion of the cyclone barrel where injected. This produces a reducing zone having reducing gas species that convert nitrogen oxides to diatomic nitrogen. The coal water slurry can alternatively be injected into the cyclone barrel from a secondary combustion air conduit. The evaporation of the water from the coal water slurry reduces the overall combustion temperature in the cyclone barrel, further reducing the production of nitrogen oxides.

REFERENCES:
patent: 2678615 (1954-05-01), Soderlund et al.
patent: 3124086 (1964-03-01), Sage et al.
patent: 3396681 (1968-08-01), Hubbard
patent: 3421824 (1969-01-01), Herbst
patent: 3500775 (1970-03-01), Hubbard
patent: 3589314 (1971-06-01), Tratz et al.
patent: 3861330 (1975-01-01), Santoleri
patent: 3892190 (1975-07-01), Sharpe
patent: 3900554 (1975-08-01), Lyon
patent: 4208386 (1980-06-01), Arand et al.
patent: 4325924 (1982-04-01), Arand et al.
patent: 4335084 (1982-06-01), Brogan
patent: 4403941 (1983-09-01), Okiura et al.
patent: 4444126 (1984-04-01), Forster
patent: 4465495 (1984-08-01), Scheffee
patent: 4785746 (1988-11-01), Roy et al.
patent: 4800825 (1989-01-01), Kuenzly
patent: 4851201 (1989-07-01), Heap et al.
patent: 4861567 (1989-08-01), Heap et al.
patent: 4886519 (1989-12-01), Hayes et al.
patent: 5078064 (1992-01-01), Breen et al.
patent: 5116584 (1992-05-01), Chen et al.
patent: 5139755 (1992-08-01), Seeker et al.
patent: 5224334 (1993-07-01), Bell
patent: 5270025 (1993-12-01), Ho et al.
patent: 5272820 (1993-12-01), Ito et al.
patent: 5380342 (1995-01-01), Leonard, III et al.
patent: 5443805 (1995-08-01), Beer et al.
patent: 5513583 (1996-05-01), Battista
patent: 5544598 (1996-08-01), Guibelin et al.
patent: 5685153 (1997-11-01), Dickinson et al.
patent: 5690039 (1997-11-01), Monro et al.
patent: 5746144 (1998-05-01), Breen et al.
Morrison D.K. et al., Coal-Water Slurry Reburning for Nox Emissions Control, Proceedings of the 20th International Technical Conference on Coal Utilization & Fuel Systems, Clearwater, FL USA, pp. 47-58, Mar. 1995.
Ashworth R.A. et al., Coal Fines Utilization Technologies, Proceedings of the 20th International Technical Conference on Coal Utilization & Fuel Systems, Clearwater, FL, pp. 559-570, Mar. 1995.
Hsieh, B.C. et al., An Analysis of Chemistry and Mechanisms for High Temperature Desulfurization of Low BTU Gas When Using Lime or Limestone, Gilbert Associates, Inc., 1974. (No month.).
Gullet, Brian K. et al., Furnance Slurry Injection for Simultaneous SO.sub.2 /NO.sub.x Removal, The 1991 SO.sub.2 Control Symposium, vol. 2:Sessions 5A-6B, pp. 87-103, Dec. 3-6, 1991.
Eckhart, C.F. and DeVault, R.F., Cyclone Reburn Using Coal-Water Fuel: Pilot Scale Development and Testing, Report DOE/PC/90157-1, Sponsored by U.S. Dept. of Energy and Pittsburgh Energy Technology Center, The Babcock & Wilcox Company, Oct. 1991.
Elliott, Martin A. (Ed.), Chemistry of Coal Utilization, Prepared under the Guidance of the Committee on Chemistry of Coal Utilization, Second Supplementary vol., pp. 1272-1277, John Wiley & Sons, 1981 (no month).
Lyon, Richard K. and Hardy, James E., Discovery and Development of the Thermal DeNO.sub.X Process, Exxon Res. and Eng. Co., Reprinted from I&EC Fundamental, vol. 25, No. 1, pp. 19-24, 1986. (No month.).
Miller, James A. and Bowman, Craig T., Mechanism and Modeling of Nitrogen Chemistry in Combustion, Prog. Energy Combust. Sci., vol. 15, pp. 287-338, 1989. (No month.).
Chen, S.L. et al., Advanced Non-Catalytic Post Combustion NO.sub.x Control, Evinronmental Progress, vol. 10, No. 3, pp. 182-185, Aug. 1991.

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