Air pollution control system and method

An air pollution control system, comprising:

• a boiler;
• a CO2 recovery equipment for recovering CO2 in flue gas from the boiler, the CO2 recovery equipment having an absorber for bringing CO2 in the flue gas into contact with a CO2 absorption liquid so as to reduce CO2 in the flue gas and a regenerator for causing the CO2 absorption liquid to emit CO2 and regenerate the CO2 absorption liquid;
• a flow path for flowing the flue gas from the boiler to the CO2 recovery equipment;
• a heat exchanger provided on the flow path, for decreasing a temperature of the flue gas so as to convert a mist generation material from a gas state to a mist state so that the mist generation material contained in the flue gas becomes a mist generation factor in the absorber of the CO2 recovery equipment;
• an electric dust collector provided on the flow path and downstream of the heat exchanger, for reducing particulates from the flue gas from a boiler and preliminarily reduce the mist generation material in the mist state;
• SOx removal equipment provided on the flow path and downstream of the electric dust collector, for reducing sulfur oxides from the flue gas after the dust reduction;
• and
• a cooler which is provided on the flow path and downstream side of the SOx removal equipment, for reducing the sulfur oxides that remain in the flue gas and for decreasing a gas temperature,
• wherein the mist generation material which is contained in the flue gas and becomes the mist generation factor in the absorber is converted from a gas state to a mist state and the mist generation material which is in the mist state and contained in the particulates is arrested and reduced.