Method for efficiently removing NO in flue gas

The invention relates to a method for efficiently removing NO in flue gas, relates to the method for oxidation of NO in the flue gas, and aims to solve the problems that a conventional method for removing NO in flue gas is high in cost, easily causes secondary pollution and is low in efficiency. The method comprises the steps: with adopting of a compressed air atomization method, an ultrasonic atomization method or a spray method, making an H2O2 solution with the mass fraction of more than or equal to 5% become H2O2 liquid droplets, and spraying to flue gas with the temperature of 150 DEG C-500 DEG C, then introducing the flue gas oxidized by the H2O2 solution into a wet desulphurization device, processing, removing SO2 and NOx, and thus completing the method for efficiently removing NO in the flue gas. With implementation of the method, the removal rate of NO in the flue gas reaches up to more than or equal to 89%. The invention can obtain the method for efficiently removing NO in the flue gas.