Device and method for liquid-phase adsorption-type redox-method flue gas denitration

The invention discloses a device and method for liquid-phase adsorption-type redox-method flue gas denitration. According to the method, after wet flue gas desulfurization (WFGD), boiler flue gas is fully in contact with a denitration mixed solution through bubbling or spraying or other modes, and NOx in the flue gas is adsorbed by an adsorbent in the denitration mixed solution at first and then has a redox reaction with a reducing agent, an oxidant and the like to form N2, CO2 and H2O to achieve the purpose of denitration. The reaction temperature range of liquid-phase redox denitrification is 20-80 DEG C, additional reheating is not needed, the mole ratio of hydrogen peroxide to NO is only 30-50%, the dosage of hydrogen peroxide is greatly reduced, and the running cost is greatly reduced. By means of the method, the denitration efficiency can reach 90% or above, the cost is relatively low, the equipment is simple, the operation is easy, reheating is not needed, no catalyst is needed,and secondary pollution