Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Patent
1997-09-30
2000-04-11
Straub, Gary P.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
B01D 5356
Patent
active
060485108
ABSTRACT:
Method for reducing nitrogen oxides (NO.sub.x) in the gas stream from the combustion of fossil fuels is disclosed. In a narrow gas temperature zone, NO.sub.x is converted to nitrogen by reaction with urea or ammonia with negligible remaining ammonia and other reaction pollutants. Specially designed injectors are used to introduce air atomized water droplets containing dissolved urea or ammonia into the gaseous combustion products in a manner that widely disperses the droplets exclusively in the optimum reaction temperature zone. The injector operates in a manner that forms droplet of a size that results in their vaporization exclusively in this optimum NO.sub.x -urea/ammonia reaction temperature zone. Also disclosed is a design of a system to effectively accomplish this injection.
REFERENCES:
patent: 3900554 (1975-08-01), Lyon
patent: 4208386 (1980-06-01), Arand et al.
patent: 4624191 (1986-11-01), Zauderer et al.
patent: 4750716 (1988-06-01), Reeve-Parker
patent: 4751065 (1988-06-01), Bowers
patent: 4756890 (1988-07-01), Tang et al.
patent: 4765258 (1988-08-01), Zauderer
patent: 4780289 (1988-10-01), Epperly et al.
patent: 5048432 (1991-09-01), Hofmann et al.
patent: 5165903 (1992-11-01), Hunt et al.
patent: 5252298 (1993-10-01), Jones
patent: 5315941 (1994-05-01), Vetterick et al.
patent: 5342592 (1994-08-01), Peter-Hoblyn et al.
patent: 5465690 (1995-11-01), Viel Lamare et al.
patent: 5478542 (1995-12-01), Chawla et al.
Wood, `Select the Right NOx Control Technology`, Chemical Engineering Progress, pp. 32-38, Jan. 1994.
Knowlton et al., `The Importance of Storage, Transfer, and Collection`, Chem. E Progress, pp. 44-54, Apr. 1994.
Coal Tech Corporation
Straub Gary P.
Vanoy Timothy C.
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