| 摘要 |
The present invention relates to processes of non-catalytic removing nitrogen oxides (NO) from flue gases and can be used to reduce NOemissions in flue gases of fuel-firing plants of any capacity and purpose. An aqueous solution of carbamide is put in contact with superheated steam under the temperature of 150-, pressure of 3.10 atm., for 0.5-5.0 sec. The resulting gas-steam reducible mixture is mixed with an ozone-containing mixture and a product of mixing is fed into the flow of flue gases with temperature of 150-. The weight ratio of ozone : carbamide is 0.01-1.0. Preferably the product of mixing is fed into the flow of flue gases having temperature of 250-, time of stay of the product of mixing in the flue gas flow is 0.2-1.0 s, the product of mixing is fed by a gas-carrier selected from the group consisting of air, water steam, flue gases, inert gases or mixtures thereof. Technical result: increased extent of purification. |
