NOVELTY - Coke furnace flue gas heat recovery ammonia desulfurization integrated system comprises a coke furnace (6), a chimney (61) and a steaming ammonia subsystem for preparing aqueous ammonia finished product using flue gas heat recovery. The steaming ammonia subsystem comprises an aqueous ammonia pump (11) for pumping remaining aqueous ammonia into barren liquid heat exchanger (2). The bottom of ammonia evaporation tower (3) pumps a portion of distilled ammonia waste water into a wastewater pump of barren liquid heat exchanger.    USE - Used as a coke furnace flue gas heat recovery ammonia desulfurization integrated system.    ADVANTAGE - The system is economical and environmentally-friendly.    DETAILED DESCRIPTION - Coke furnace flue gas heat recovery ammonia desulfurization integrated system comprises a coke furnace (6), a chimney (61) and a steaming ammonia subsystem for preparing aqueous ammonia finished product using flue gas heat recovery. The steaming ammonia subsystem comprises an aqueous ammonia pump (11) for pumping remaining aqueous ammonia into barren liquid heat exchanger (2). The bottom of ammonia evaporation tower (3) pumps a portion of distilled ammonia waste water into a wastewater pump of barren liquid heat exchanger. The remaining aqueous ammonia and distilled ammonia wastewater from barren liquid heat exchanger are mixed with alkali and passed into the upper part of ammonia evaporation tower via alkali metering pump. The generated ammonia vapor steam is sequentially passed through a shrinking device and a condenser, then into ammonia water channel to form aqueous ammonia finished product. The distilled ammonia wastewater is cooled via wastewater cooler, then passing into flue gas desulfurization tower for spraying. A portion of distilled ammonia wastewater from the bottom of ammonia evaporation tower is pumped into heat pipe heat exchanger. The distilled ammonia wastewater is passed into coke furnace via heat pipe heat exchanger and heated to 125-135 degrees C, then returned to the bottom of ammonia evaporation tower. The flue gas passes into the flue gas desulfurization tower, rinsing the flue gas to absorb exhaust gas sulfur dioxide to obtain ammonium sulfate solution. The desulfurization system comprises the flue gas desulfurization tower. The finished product from flue gas desulfurization tower bottom is mixed with liquid ammonia and passes the ammonium sulfate solution into extraction output pump. The partial liquid phase by small circulation pump is passed into flue gas desulfurization tower upper and near flue gas inlet for spraying. The partial liquid phase by large circulation pump is passed into upper part of the flue gas desulfurization spray tower. The compressed air is continuously passed into the liquid from flue gas desulfurization tower bottom. The flue gas desulfurization tower upper flue gas outlet is set with cyclone mist catcher. The cyclone mist catcher is set with a chimney. The ammonium sulfate solution is made from solid ammonium sulfate fertilizer preparation subsystem. The fertilizer preparation subsystem comprises a cyclone, a centrifuge, a dryer and a packaging machine arranged sequentially from front to back. The output of the pump is set with cyclone for passing ammonium sulfate solution, then centrifuging and drying to form solid ammonium sulfate.    DESCRIPTION OF DRAWING(S) - The diagram shows a schematic representation of the coke furnace flue gas heat recovery ammonia desulfurization integrated system.    Barren liquid heat exchanger (2)    Ammonia evaporation tower (3)    Coke furnace (6)    Aqueous ammonia pump (11)    Chimney (61)