Activated coke flue gas desulfurization and denitrification system

The utility model discloses an activated coke flue gas desulfurization and denitrification system. The activated coke flue gas desulfurization and denitrification system comprises an adsorbing reactor, a desorption regenerator, a material conveying device and a by-product converting device, wherein the devices are connected with each other by using specific pipelines; and functions of the devices are realized by using a specific process. The adsorbing reactor is a composite layer double-section cross-flow moving bed; the adsorbing reactor comprises a denitrification section and a desulfurization section so as to realize the concentrated purification of SO2, NOx, dioxin, mercury and fume in the flue gas; the desorption regenerator is divided into a preheating area, a regenerating area and a cooling area so that fetching of activated coke attached with mercury and dioxin as well as follow-up harmless treatment of the activated coke are realized; the desorption regenerator is used for exchanging heat by using a