Coke oven flue gas treatment system

The utility model relates to a coke oven flue gas treatment system which comprises a cyclone dust collector, a filtering and purifying box, a desulfurizing tower, a wet-type electric dust collector and a chimney, a gas outlet of the cyclone dust collector is communicated with the lower portion of the filtering and purifying box, the top of the filtering and purifying box is communicated with the lower portion of the desulfurizing tower, and the top of the desulfurizing tower is communicated with a gas inlet of the wet-type electric dust collector. An air outlet of the wet-type electric dust remover is communicated with the lower portion of the chimney, the filtering and purifying box is provided with a primary filter, a medium-efficiency filter, a high-efficiency filter and a plurality of disinfection and purification nets from bottom to top, the space between every two adjacent filters is filled with activated carbon, and a plurality of ultraviolet lamps are evenly distributed on the inner wall of the filter