Air-cooled aerofoil profile elliptical pipe bundles demister and demisting method thereof

The invention discloses an air-cooled aerofoil profile elliptical pipe bundles demister and a demisting method thereof. The air-cooled aerofoil profile elliptical pipe bundles demister comprises an aerofoil profile elliptical pipe bundles demisting system arranged at top of a desulfurization tower, and a cooling air automatic diversion system used for introducing cold air in the aerofoil profile elliptical pipe bundles demisting system. The aerofoil profile elliptical pipe bundles demisting system comprises pipe bundles formed by the bundles with multilayer lattice staggered arrangement and having elliptical cross sections; arc wings are symmetrically arranged at two sides of the elliptical pipe bundles, a grading orientation wash water system is composed of several nozzles with layered and array arrangement capable of injecting water flow downwardly between aerofoil profile elliptical pipe bundles and several nozzles arranged along the tangent direction of arc wings capable of injecting water flow upwardly in an orientation mode; and the cooling air automatic diversion system comprises several wind direction fluid directors respectively arranged at an windward end and a leeward end. The demister combines inertia separating, centrifugation and condensation separating, and has the characteristics of high demisting and dedusting efficiency, less energy consumption, and no blind angle for flushing; and gypsum rain generated due to desulphurization of flue gas can be effectively reduced.