Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Nitrogen or nitrogenous component
Patent
1992-10-13
1996-02-06
Straub, Gary P.
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Nitrogen or nitrogenous component
C01B 2100
Patent
active
054894190
ABSTRACT:
Improved processes and improved compositions reduce the environmental damage caused by large-scale combustion, especially in the field of NO.sub.x reduction by selective noncatalytic reduction (SNCR) in the gas phase. In one aspect, the process improves the reliability of known means, compositions and methods for reducing the concentration of pollutants in a gas stream by: preparing an aqueous solution comprising a pollutant-reducing agent and a surface active agent in ratio of surface active agent to pollutant-reducing agent of greater than 1:4000, the amount and composition of surface active agent being effective to reduce average droplet size by at least 10%, and introducing the solution into the gas stream. Preferred surface active agents have HLB values of from about 8 to about 20, and are preferably anionic or nonionic agents such as C.sub.11 -C.sub.15 secondary alcohol ethoxylates, C.sub.12 -C.sub.15 linear primary alcohol ethoxylates, alkylated diphenyl oxide disulfonates and nonyl phenol ethoxylated ethanol.
REFERENCES:
patent: 3900554 (1975-08-01), Lyon
patent: 4208386 (1980-06-01), Arand et al.
patent: 4325924 (1982-04-01), Arand et al.
patent: 4719092 (1988-01-01), Bowers
patent: 4777024 (1988-10-01), Epperly et al.
patent: 4780289 (1988-10-01), Epperly et al.
patent: 4842834 (1989-06-01), Burton
patent: 4844878 (1989-07-01), Epperly et al.
patent: 4877591 (1989-10-01), Epperly et al.
patent: 4915036 (1990-04-01), DeVita
patent: 4985218 (1991-01-01), DeVita
patent: 4992249 (1991-02-01), Bowers
patent: 4997631 (1991-03-01), Hofmann et al.
Hackh's Chemical Dictionary, 4th Edition, 1969, p. 650.
Diep Daniel V.
Lin M. Linda
Dunn Jr. Thomas G.
Nalco Fuel Tech
Straub Gary P.
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