Nalco Fuel Tech

Roy A Johnson

Leonard Dubin

Steven C Argabright

Vincent M Albanese

Pollution from industrial plants which produce NO.sub.x and waste water is reduced by utilizing waste water to prepare aqueous NO.sub.x -reducing solutions. Total water hardness in the waste water is preferably maintained below 2500 ppm, silicate below 200 ppm and the calcium to magnesium ratio above 2:1. The aqueous NO.sub.x -reducing solution will preferably contain hardness suppressing compostions in effective amounts.

Boiler operation with decreased NO.sub.x and waste water discharge

A process for the reduction of nitrogen oxides in the effluent of a gas turbine is presented. This process comprises forming an emulsion which comprises water and fuel oil and combusting the emulsion in the combustion can of a gas turbine to form an effluent; and contacting the effluent with a catalyst effective for the reduction of nitrogen oxides therein.

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Glen Ellyn, IL, United States of America

Roy A Johnson