Process for concurrently treating process waste waters and flue

Details Process for concurrently treating process waste waters and flue Process for concurrently treating process waste waters and flue

1974-12-06

1976-07-20

Vertiz, Oscar R.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group ib metal

423237, 423239, 423245, C01B 2100

Patent

active

039707393

ABSTRACT:
The process involves stripping ammonium nitrogens and organic materials, as gases, which are present in process waste waters to be discharged from plants wherein gases for use in ammonia synthesis are manufactured by reforming hydrocarbons with steam, decomposing the organic materials selectively in the presence of a catalyst at a temperature of about 120.degree. to 400.degree. C., mixing the remaining gases with the flue gases from said plants so as to provide a gaseous mixture having ammonia therein in an amount of about 0.3 to 10 moles per mole of nitrogen oxides present in the flue gases, reacting the gaseous mixture over a catalyst at a temperature of about 150.degree. to 700.degree. C. and oxidizing the unreacted ammonia, if any, in the presence of a catalyst at a temperature of about 150.degree. to 700.degree. C. to render the nocuous substances innocuous.

REFERENCES:
patent: 2975025 (1961-03-01), Cohn et al.
patent: 3328115 (1967-06-01), Keith et al.
patent: 3467491 (1969-09-01), Hardison
patent: 3615166 (1971-10-01), Hindln et al.
patent: 3661507 (1972-05-01), Breitbach et al.
patent: 3812236 (1974-05-01), Adams et al.
patent: 3840471 (1974-10-01), Acres
patent: 3880982 (1975-04-01), Stenzel
patent: 3885020 (1975-05-01), Whelan

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