METHOD OF NEUTRALIZING TOXIC GASES FROM AIR REMOVED FROM LIVESTOCK PREMISES Russian patent published in 2023 - IPC A61L9/04 A61L9/22 

FIELD: medical equipment.

SUBSTANCE: invention relates to a method of neutralizing toxic gases from air removed from livestock premises using a dielectric barrier discharge as a source of ozone for the oxidation of chemical compounds. An ozone-saturated stream of atmospheric air from the ozonizer outlet is supplied to the reactor inlet and mixed with air removed from the livestock premises, starting the oxidation reaction of ammonia and hydrogen sulfide with ozone. Mixing of streams of ozone-saturated atmospheric air from the outlet of the ozonizer and air removed from the livestock premises is carried out at an angle of 30…45 degrees at the entrance to the reactor. The generation of ozone and the treatment of air removed from the livestock building are separated in space. The weight content of ozone at the inlet to the reactor is at least 3 parts by mass per 1 part by mass of ammonia with the following process parameters in the reactor — temperature range 276...304 K, air pressure 98...101 kPa, air pumping speed 0.6. ..1.11 m/s, concentration of components in the air - ozone from 4 to 180 mg/m³, ammonia from 2 to 60 mg/m³, hydrogen sulfide from 0 to 4 mg/m³, nitrogen oxides from 0 to 120 mg/m³, and the pressure of the ozone-saturated atmospheric air flow coming from the barrier discharge generator into the reactor is 15...20% higher than the pressure of the air entering the reactor removed from the livestock building, and its volume is no more than 10% of the volume air removed from the livestock premises. Then the air removed from the reactor and nitrogen oxides formed during the dielectric barrier discharge are sent to the system for transporting the removed air from the reactor. The duration the air removed from the reactor and the nitrogen oxides formed during the dielectric barrier discharge are present in the system for transporting the removed air from the reactor is determined depending on the required concentration of nitrogen oxides Cpo_x (mg/m³) at the outlet of the system for transporting the removed air from the reactor according to the following equation: T = - 0.0473× Spo_x² + 1.95× Spo_x +8.51, when the concentration of ozone changes from 0 to 60 mg/m³ and the concentration of nitrogen oxides NO_x changes from 0 to 50 mg/m³.

EFFECT: reduction of emissions of toxic DPVs in ventilation emissions of industrial premises and increase the operational reliability of ozone generation devices using a dielectric barrier discharge, simplification and reduction of the cost of the process of neutralizing toxic DPVs in ventilation emissions of industrial premises.

1 cl, 6 dwg