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Column Internals
Mesh pad mist eliminators are well suited to remove mechanically formed entrainment from packed and trayed process towers, spray columns, venturi scrubbers and other gas scrubbing devices. They are also a widely used de-entrainment device in knock out drums and separators. With its superior design, Saiptech has developed a series of mesh type mist eliminators depending on direction of gas flow and the complexity of wire structure.
Saiptech mesh pad type mist eliminators remove 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.
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 |
Pad Density |
Surface Area |
Free Volume |
Application |
| SMD1 | Metal | 0.28 mm | 80 kg/m? | 145 m?/m? | 99% | Moderate fouling, minimum pressure drop |
| SMD2 | Metal | 0.28 mm | 110 kg/m? | 200 m?/m? | 98.60% | Light fouling, fine entrainment |
| SMD3 | Metal | 0.28 mm | 144 kg/m? | 258 m?/m? | 98.20% | General purpose |
| SMD4 | Metal | 0.15 mm | 144 kg/m? | 482 m?/m? | 98.20% | High efficiency for fine entrainment |
| SMD5 | Metal | 0.28 mm | 168 kg/m? | 310 m?/m? | 97.90% | General purpose |
| SMD6 | Metal | 0.28 mm | 192 kg/m? | 350 m?/m? | 97.60% | Optimum efficiency & pressure drop |
| SMD7 | Metal | 0.15 mm | 192 kg/m? | 643 m?/m? | 97.50% | Very high efficiency in clean service |
| SMDP1 | Polypropylene | 0.3 mm | 75 kg/m? | 820 m?/m? | 93% | Acid mists |
| SMDP2 | Polypropylene | 0.3 mm | 50 kg/m? | 750 m?/m? | 95.30% | Chemical scrubber towers |
| SMDP3 | Polypropylene | 0.3 mm | 33 kg/m? | 490 m?/m? | 96.90% | Low pressure drop scrubbers |
| SMDT | Teflon | 0.3 mm | 85 kg/m? | 220 m?/m? | 95% | Very corrosive services |
| SMD1X | Metal/PP Mix | / | 200 kg/m? | 625 m?/m? | 95.60% | Mist removal of polar / non-polar mixtures |
| SMDF | Fiber Glass | / | 135 kg/m? | 300 m?/m? | 95% | Coalescer fine mists |
| SMD2X | Metal/ Fiber Glass Mix | / | 305 kg/m? | 340 m?/m? | 94% | Fine mist conditions |
* others type are also available for tailor made as per request
