Wet desulfurization apparatus capable of improving desulfurization efficiency and wet desulfurization method using the same

A demister for a wet desulfurization apparatus including a chamber enclosing a space configured to pass flue gas from a flue gas inlet of the chamber to a flue gas outlet of the chamber, the space partitioned into a first chamber region communicating with the flue gas inlet and a second chamber region communicating with the flue gas outlet, the demister comprising:

• an upper support frame including a first lower support side configured to be fixed to an inner wall of the chamber in the second chamber region;
• a lower support frame including a first upper support side configured to be fixed to the inner wall of the chamber in the second chamber region;
• and
• a plurality of corrugated plates spaced apart from each other and configured to remove mist from the flue gas in the second chamber region, each corrugated plate having an upper end joined to the upper support frame and a lower end joined to the lower support frame.

The demister of claim 31,

• wherein the wet desulfurization apparatus further comprises a slurry reservoir partitioned into a first reservoir part configured to receive and store an alkaline slurry of a first pH value and a second reservoir part configured to receive and store an alkaline slurry of a second pH value, and
• wherein the demister further comprises:
• a demisting pipe communicating with the second reservoir part;
• and
• multiple spray nozzles disposed along the demisting pipe to spray the alkaline slurry of the second reservoir part downward onto the demister in order to remove mist attached to the upper support frame, the lower support frame, and the corrugated plates.

A demister for a wet desulfurization apparatus,

• wherein the wet desulfurization apparatus includes
• a chamber enclosing a space for passing flue gas and including a first barrier partitioning the space into first and second chamber regions, a flue gas inlet configured to introduce raw flue gas into the first chamber region, and a flue gas outlet configured to discharge desulfurized flue gas from the second chamber region;
• a first sprayer disposed in the first chamber region and configured to spray an alkaline slurry of a first pH value into the first chamber region in order to remove sulfur (S) from the flue gas in the first chamber region;
• and
• a second sprayer disposed in the second chamber region and configured to spray an alkaline slurry of a second pH value into the second chamber region in order to remove sulfur (S) from the flue gas in the second chamber region, and
• wherein the demister is disposed in the second chamber region between the second sprayer and the flue gas outlet and is configured to remove mist from the flue gas in the second chamber region.