METHOD AND DEVICE FOR REMOVAL OF NO AND NO Russian patent published in 2016 - IPC B01D53/86 B01D53/56 

FIELD: chemistry.

SUBSTANCE: invention relates to method of removing N₂O and NO_x from exhaust gases. Section deNO_x is carried out after section deN₂O at temperature at inlet ≤ 400°C, initial gas for section deN₂O contains water and has selected ratio N₂O/NO_x. Working parameters: temperature, pressure and volume rate in section deN₂O are selected so that to obtain decomposition of N₂O from 80 to 98%. In these conditions of next section deNO_x can work in optimal mode. Device contains device (2) of regulation of water content in gas (1) containing NO_x and N₂O; section deN₂O (3) for reducing content of N₂O in gas flow containing filled with iron zeolite catalyst; cooling device (4) for cooling gas flow (5), leaving section deN₂O; a section deNO_x (6) containing SCR-catalyst, to reduce content of NO_x in gas stream, and supply line (7) to feed reducing agent NO_x in gas flow (5) outgoing from section deN₂O.

EFFECT: technical result is efficient removal of N₂O and NO_x from gases.

24 cl, 3 dwg, 2 tbl