PP VANE TYPE MIST ELIMINATORS

 Also known as chevron or plate type, vane mist eliminators consist of closely spaced corrugated plates that force mist-laden gas to follow serpentine paths. These devices are generally not efficient for mist droplets smaller than about 20 microns, but they are sturdier than mesh pads and impose less pressure drop. Vane arrays can be mounted horizontally or vertically. They are preferred in applications involving high vapor velocities, low available pressure drop, viscous or foaming liquids, lodging or caking of solids, slugs of liquid, or violent upsets. Like mesh pads, vane units are usually round or rectangular. They are sometimes used in combination with mesh pads for optimum performance in special situations.TCI standard vanes (front cover) are available in metal or plastics and have various blade spacings and profiles. For special requirements.

The parallel, chevron construction relies on the principles of droplet inertia, centrifugal force, impingement and gravity. Liquid-laden gas within the vane bundle is forced to change direction several times - which imparts a centrifugal force onto the stream and throws heavier liquid droplets against the wetted walls of the vanes where they are incorporated into the sheet flow of the liquid and drained. Agitation and surface contact also cause coalescence of small droplets within the vanes. As with wire mesh mist eliminators, the KnitMesh vane mist eliminators can be installed either vertically or horizontally. Drainage of liquid from the vane pack to the bulk liquid phase in the vessel is achieved by means of ‘downcomer pipes’.

Vane mist eliminators fall into two categories. Firstly, simple vanes which separate liquid by impingement, coalescence and drainage on the vane surface with no disengagement of the liquid from the gas stream, are mainly used for flue gas desulfurization is also known as: desulfurization demister. Baffled defogger has a simple structure, high to medium-sized and large-sized droplet capture efficiency, pressure drop is relatively low, easy to wash, with a spacious open structure for easy maintenance and low cost characteristics.
 Baffled demister principle: When the mist containing gas flows through the demister to a certain speed, due to the effect of inertial impaction gas, mist and wave plates collide wave plate is attached to the surface. Wave plate surface diffusion mist, mist gravitational sedimentation cause the mist to form larger droplets and forward movement with the air to wave plate corner, the steering friction and centrifugal force and wave plates, adsorption and surface tension of the liquid so that the droplets growing, large droplets until agglomeration force produced by the gravity of its own gas lifting force exceeds the surface tension of the liquid when the droplets are separated from the upper surface of the corrugated plate down. Defogger wave plates to structure multi-fold increase in the chance of trapped mist, mist is not removed at the next turn through the same action is captured, so that repeated action, thus greatly improving the efficiency demisting . After the gas passes through the wave plate demister, substantially free of mist. Demister system consists demister body and flushing system. Usually two different specifications demister body wash water pipes, nozzles, cage, support beams and associated connections, fasteners, seals and other components.