Liquid film dust arrester and flue gas desulfurization system

A liquid film dust arrester configured to face a gas flow flowing out from a gas discharge pipe and to take dust in the gas flow into a liquid film in order to remove the dust from the gas flow, the dust arrester comprising:

• a gas flow blocking unit arranged downstream from the gas discharge pipe in a direction of the gas flow;
• a liquid dispersion unit having a dispersion section arranged at a position near the center of the gas flow blocking unit and upstream relative to the gas flow blocking unit as viewed in the flowing direction of the gas flow so as to face the gas flow blocking unit;
• a liquid ejection unit having an ejection port disposed upstream of the dispersion section in a direction of a liquid flow and being configured to eject liquid from the ejection port;
• and
• a liquid film forming unit configured to form the liquid film in the flow path of the gas flow between the gas flow blocking unit and the gas discharge pipe,
• characterized in that the dispersion section comprises a smooth surface which operates to cause the liquid ejected from the ejection port toward the dispersion section to flow and disperse on the smooth surface and
• that the liquid film is so formed as to face the gas flow flowing through the flow path.