Novel catalytic desulfurization and denitration apparatus and technology aiming at coke oven flue gas

A novel catalytic desulfurization and denitration apparatus and technology aiming at coke oven flue gas, relating to the field of coke oven flue gas purification. In the desulfurization, by using water, oxygen, SO2 and heat in flue gas, sulfuric acid in certain concentration is produced; in the denitration, by means of the denitration principle of NH3-SCR, a nano multi-metal catalyst is used as adenitration catalyst with assistance of an ammonia removal catalyst, thus achieving integration of denitration and ammonia removal. The key of the technology is the catalysts: in the desulfurization,a desulfurizer prepared by supporting a certain active component on a supporter, wherein the desulfurizer has catalytic effect on the SO2 oxidization to produce acid process; in the denitration, by using the nano multi-metal catalyst as the denitration catalyst, reaction temperature zone is controlled at 80-140 DEG C, so that the catalyst is a real low-temperature catalyst. The whole technology issimple in process and low in energy consumption.