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An activation hopper for preventing hardening of desulfurizer

Steel rolling heating furnace coil II project of Jingye group

The flue gas from the heating furnace soot and the air flue gas is heat exchanged through the hot flue gas heat exchanger after desulfurization and denitration respectively, and the flue gas temperature is raised to 140-180 ℃. The flue gas is desulfurized through the sodium based dry desulfurization reactor. The desulfurized dusty flue gas enters the bag filter for dust removal, and the flue gas temperature after dust removal is 130-175 ℃. The heat make-up furnace is installed before soot denitration, and the soot is heated to 200-220 ℃ through the heat exchanger. The waste gas from the heat make-up furnace enters the air flue gas, Heat the air flue gas to 200-220 ℃, and then the flue gas will remove nitrogen oxides through their medium and low temperature SCR (180-220 ℃) denitration system. After the net flue gas passes through the heat exchanger to exchange heat with the original flue gas, the flue gas temperature drops to about 120-130 ℃, and then is sent to the chimney through the fan for discharge.

Under the condition of 8% oxygen content of flue gas after desulfurization: SO2 ≤ 10 mg / Nm3, particulate matter ≤ 5 mg / Nm3, NOx ≤ 30mg / Nm3.