The invention discloses a
flue gas desulfurizing
system. The
flue gas desulfurizing
system comprises a chilling section and an absorbing section which are mutually communicated by a connecting
pipe, wherein the chilling section comprises a spraying area and a
liquid storage tank which are mutually communicated; the spraying area is provided with a spraying layer, the
liquid storage tank is positioned under the spraying area, and the spraying layer and the bottom part of the
liquid storage tank are connected by a pipeline and a chilling circulation pump to form a chilling loop; a pipeline for connecting the chilling circulation pump and the
liquid storage tank is provided with an alkaline liquid inlet, and the alkaline liquid inlet is connected with an alkaline
liquid storage tank through aswitch valve. The invention also provides a method using
flue gas desulfurizing
system to desulfurize
flue gas. The
flue gas desulfurizing system has the advantages that the high-temperature
tail gaswith higher concentration of SO2 (
silicon dioxide) can be treated, the investment is low, the
energy consumption is low, and the clean and environment-friendly effects are realized. A method has theadvantages that the operation is simple, the absorbing ability is strong, and the scaling and blockage of equipment can be avoided; the higher desulfurizing rate can be obtained with fewer circulationliquid, the exhausted
flue gas is clean, any inorganic particulate matter is basically not contained, the trailing white
smoke is avoided, and the
haze weather is not formed.