Air pollution control system and method

摘要

SOx removal equipment 15 which reduces sulfur oxides from flue gas 12 from a boiler 11, a cooler 16 which is provided on the downstream side of the SOx removal equipment 15 so as to reduce the sulfur oxides from the flue gas and decrease a gas temperature, CO2 recovery equipment 17 which includes an absorber for bringing CO2 in the flue gas into contact with a CO2 absorption liquid so as to be reduced and a regenerator for causing the CO2 absorption liquid to emit CO2 so as to recover CO2 and regenerate the CO2 absorption liquid, and ammonia injection equipment 22 for reducing a mist generation material which is a generation source of mist that is generated in the absorber of the CO2 recovery equipment before introducing the flue gas to the CO2 recovery equipment, are included.

主权项

1. A method of preventing scattering of a CO2 absorption liquid in a CO2 recovering method for bringing CO2 in flue gas into contact with the CO2 absorption liquid to reduce CO2, the flue gas being generated from an industrial facility,
the preventing method comprising: a first step of injecting ammonia gas to the flue gas generated from the industrial facility to convert SO3 in a gas state into ammonium sulfate, the SO3 in the gas state being contained in the flue gas; a second step of reducing the ammonium sulfate from the flue gas with a dust collector; and a third step of supplying the flue gas, from which the SO3 has been reduced, into a CO2 recovery equipment and bringing flue gas into contact with the CO2 absorption liquid to reduce the CO2 contained in the flue gas.