| 摘要 |
PROBLEM TO BE SOLVED: To provide an exhaust gas treatment apparatus capable of enhancing the soot collection capacity of an electric precipitator, capable of preventing low temperature corrosion due to SO3 and capable of also reducing CO2 . SOLUTION: The exhaust gas treatment apparatus has a regeneration type air preheater 3 for recovering heat of the exhaust gas from a boiler 1, the electric precipitator 5 for removing soot, the heat recovery device 4 provided to the inlet of the electric precipitator, desulfurization equipment 7 and ventilation devices 6 and 9 for discharging the treated gas to the atmosphere from a flue 10 and is further equipped with a forced draft blower 18 for supplying air to the boiler 1, a heat exchanger 2 provided to the outlet of the forced draft blower 18 to perform the heat exchange of air supplied from the forced draft blower 18 with the heat recovery device 4 and an operator 41 for controlling the heat exchange quantity between the heat recovery device 4 and the heat exchanger 2 on the basis of the temperature detected by a temperature detector 21 for detecting the temperature of the exhaust gas on the outlet side of the heat recovery device 4. |
