METHOD FOR OXIDISING AMMONIA AND SYSTEM SUITABLE THEREFOR Russian patent published in 2018 - IPC C01B21/26 C01B21/28 

FIELD: chemistry.

SUBSTANCE: group of inventions refers to inorganic chemistry and may be used in the chemical industry to produce products of ammonia oxidation. System for oxidising ammonia, contains a reactor (3), equipped with at least one feed line (120) for a reactant gas mixture and with at least one discharge line for a process gas. Catalyst (3c) in the interior of the reactor (3) that contains at least one transition metal oxide that is not an oxide of a platinum metal. System also comprises a device for setting a molar ratio of oxygen to ammonia in the reaction gas mixture from 1.25 to 1.75 mol/mol by mixing an oxygen-containing gas flow having an O₂ content < 20 vol % with a selected quantity of ammonia. Oxygen-containing gas flow being produced 1) by a device for diluting an air flow with a gas flow (line 220); 2) by a device for depleting oxygen from an oxygen-containing gas mixture, preferably from air (line 210); 3) by a combination of measures 1 and 2. Temperature of the produced gas at the exit from the catalyst bed is from 700 °C to 950 °C.

EFFECT: production of ammonia oxidation products.

30 cl, 6 dwg, 2 tbl