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Demister In Distillation Column

SPT mesh pad type demister removes droplets by impingement on the wire surface. The liquid collected on the filaments is then able to drain from the pad under gravity. They have a limited range of useful operation in which they provide almost complete removal of droplets down to about 3–5 microns. Turndown range of the vapour rate is around 3:1. At excessively high vapour velocities, the liquid droplets that impinge on the wire surface are sheared off by the vapour and re-entrained before they are able to drain. At very low vapour velocities, all but the larger droplets are able to follow the vapour path through the mesh and thus avoid impingement; however, the inherent design of the separator vessel means that in most applications an effective turndown performance of 10:1 or better can be achieved.

SPT Mesh Pad Type Demister

Standard Mesh Pad Type

At Saiptech, mist eliminators can be manufactured in virtually any size and are available in a wide range of materials, with over 14 distinct styles designed and fabricated to meet specific application needs.

Type Material Wire Dia (mm) Pad Density (kg/m?) Surface Area (m?/m?) Free Volume (%) Application
SMD1 Metal 0.28 80 145 99 Moderate fouling, minimum pressure drop
SMD2 Metal 0.28 110 200 98.60 Light fouling, fine entrainment
SMD3 Metal 0.28 144 258 98.20 Standard general-purpose media
SMD4 Metal 0.15 144 482 98.20 High efficiency for fine entrainment
SMD5 Metal 0.28 168 310 97.90 General purpose
SMD6 Metal 0.28 192 350 97.60 Optimum efficiency & pressure drop
SMD7 Metal 0.15 192 643 97.50 Very high efficiency in clean service
SMDP1 Polypropylene 0.3 75 820 93 Acid mists
SMDP2 Polypropylene 0.3 50 750 95.30 Chemical scrubber towers
SMDP3 Polypropylene 0.3 33 490 96.90 Low pressure drop scrubbers
SMDT Teflon 0.3 85 220 95 Very corrosive services
SMD1X Metal/PP Mix / 200 625 95.60 Mist removal of polar / non-polar mixtures
SMDF Fiber Glass / 135 300 95 Coalescer fine mists
SMD2X Metal/ Fiber Glass Mix / 305 340 94 Fine mist conditions

* Other types are also available for custom manufacturing as per request.

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