The invention provides a high-temperature water
slag flushing dead steam energy-saving
water collection and
pollutant treatment system and method. The
system comprises a high-altitude
granulation tower, a
slag washing water inlet, a high-temperature
slag inlet, a liquid collecting device, a spraying device, a mixed
air heating area, a
mixed gas induced draft fan, a slag washing
pool, a spraying water condensation
water treatment unit, a dead steam bypass condenser, a gas heat source unit, a
demister and a hygrothermograph, wherein the slag washing
pool is connected with the
tower wall of the bottom of the high-altitude
granulation tower, the spraying water condensation
water treatment unit is connected with the liquid collecting device and the spraying device, the inlet of the dead steam bypass condenser is connected with the tower wall of the high-altitude
granulation tower through a dead steam bypass pipeline leading-out section A1, the outlet of the dead steam bypass condenser is connected with the inlet of the second
demister, and the outlet of the second
demister is connected with one side of the mixed
air heating area through a dead steam bypass pipeline leading-back sectionA2. According to the invention,
blast furnace slag flushing dead steam can be deeply purified, the
discharge amount of
hydrogen sulfide,
sulfur dioxide and other acid pollutants is reduced, slag flushing dead steam
waste heat recycling is achieved, and the
water consumption of a slag flushing
system is greatly reduced.