Method for removing nitric oxide in flue gas

A method for removing nitric oxide in flue gas belongs to the technical field of super gravity. The method comprises the following steps of: starting a super-gravity reactor, regulating the rotation speed of a rotator to be 100-4000rpm; feeding an absorption liquid and a mixed gas containing NO (nitric oxide) into a super-gravity revolving bed reactor from a liquid phase inlet and a gas phase inlet respectively, wherein the absorption liquid flows from the inner edge of the rotator to the outer edge of the rotator under the action of centrifugal power, is in counter-current or cross-current contact with the gas in the super-gravity revolving bed reactor and carries out reaction, and thus the NO removing process is finished; the pH (potential of hydrogen) value of the absorption liquid is 5-10, the volume flow ratio of the gas and the liquid is (30-300):1, the pressure of the system during the absorption process is 0.1-4.0MPa, the temperature of the system is 10-80 DEG C, and the concentration of the complex absorption solution is 0.005-0.1mol/L. The removing rate of NO in the mixed gas reaches more than 85%. The method provided by the invention is low in equipment investment, is low in energy consumption, is environment-friendly and is non-corrosive to equipment.