The invention belongs to the technical field of desulfurization
wastewater treatment, and particularly relates to a bypass
flue gas
evaporation system for
zero emission of desulfurization
wastewater, which comprises two units, outlet flues of a denitration
system A reactor and a denitration
system B reactor are both connected with a bypass high-temperature
flue gas system, and the bypass high-temperature
flue gas system is connected with a high-temperature
flue gas three-way valve group device. The high-temperature
flue gas three-way valve group device is connected with the top end of the
drying tower, the bottom end of the
drying tower is connected with the low-temperature
flue gas three-way valve group device, the low-temperature flue gas three-way valve group device is connected with the bypass low-temperature flue gas system, outlet flues of reactors A and B of the denitration system are correspondingly connected with air preheaters A and B, and outlet flues of the air preheaters A and B are correspondingly connected with dust removers A and B; two
branch pipes of the bypass low-temperature flue gas system are correspondingly connected with outlet flues of the
air preheater A and the
air preheater B, the structure of the other unit is the same as the connection relation of the unit, the two units share the high-temperature flue gas three-way valve set device, the low-temperature flue gas three-way valve set device and the
drying tower, the system can switch flue gas operation
modes, and the
wastewater treatment capacity is stable.