Abstract: To include a boiler 11 that burns fuel F, an air heater 13 that recovers heat of flue gas 18 from the boiler 11, a first precipitator 14 that reduces dust in the flue gas 18 after heat recovery, a desulfurizer 15 that reduces sulfur oxides in the flue gas 18 after dust reduction by an absorbent, a dewaterer 32 that reduces gypsum 31 from desulfurization discharged water 30 discharged from the desulfurizer 15, a spray drying device 34 including an atomizer that atomizes a dewatering filtration fluid 33 discharged from the dewaterer 32, and a flue-gas introducing line L11 that introduces a part of the flue gas 18 into the spray drying device 34.

Abstract: The invention relates to a fluid storage tank having an interior volume and a floor and having an internal spill containment chamber comprising a vent gas scrubbing apparatus or scrubber. The chamber may be defined by a containment wall which completely separates the chamber from the tank interior volume. The containment wall may comprise an exterior portion which extends beyond the tank wall. The scrubber is disposed within the chamber and comprises a gas inlet passing through the containment wall into the tank interior volume, a gas outlet for venting scrubbed gases, and a gas scrubbing chemical storage and circulation system.