FLUE GAS DESULFURIZATION AND DENITRATION METHOD USING FLUIDIZED BED REACTOR

摘要

A flue gas desulfurization and denitration method using a fluidized bed reactor. The method comprises the following steps: (1) a pre-dedusting step: performing pre-dedusting on raw flue gas to remove most of dust particles so as to form pre-dedusted flue gas having a dust content of 10-30 mg/Nm3; (2) a desulfurization and denitration step: enabling the pre-dedusted flue gas to contact a desulfurization and denitration absorbent in the fluidized bed reactor so as to form desulfurized and denitrated flue gas, wherein the desulfurization and denitration absorbent is dry powder and comprises, by weight, 70-90 parts of nano calcium oxide, 5-15 parts of nano silicon dioxide, 3-10 parts of nano vanadium pentoxide, and 2-10 parts of nano ferric oxide; (3) a dedusting step: isolating the desulfurized and denitrated flue gas in a dedusting apparatus to obtain purified flue gas and a byproduct.