| Customization: | Available |
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| Manufacturing Process: | Welding |
| Surface Treatment: | Pickling Treatment for Grids |
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CO2 Absorbers use wire mesh demister SP type
Wire Mesh Demister for Absorbers - reduce overhead losses of glycols in dehydrators to no more than 0.1 gal/MMSCF natural gas-cut losses of absorption oil and amines in CO2 systems.
Wire Mesh Demister Standard Specification (part):
Materials
3.1Metallic Mesh Pads
Materials for metallic Mist Eliminators are as per customer need. Type 304 or Type 316 mesh pads can be in accordance with ASTM A-478. Monel mesh pads can be in accordance with ASTM B-164.
3.2Non-metallic Mist Eliminators
Non-metallic Mist Eliminators shall be PTFE or polypropylene as specified in by customer.
3.3Supports
A.Supports welded to the vessel shall be the same material as the shell. Where the shell is lined, supports welded to the lining shall be the same material as the lining.
B.Supports not welded to the shell (e.g. beams) shall be the same material as the Mist Eliminator.
3.4Grids
A.Metallic grids can be the same material as the mesh pad
B.For non-metallic mesh pads, the grids shall be carbon steel, coated with the same material as the mesh pad.
3.5Fastening Devices
A.For metallic mesh pads the wire ties or other fastening devices shall be of the same material as the Mist Eliminator.For non-metallic mesh pads, the grids shall be carbon steel, coated with the same material as the mesh pad.
B.For non-metallic mesh pads the wire ties can be the same material as the mesh pad.
Wire Mesh Demister Styles:
|
Mesh density (stainless steel) |
Application |
| 50 kg/m3 | Heavy fouling, e.g. evaporators |
| 80 kg/m3 | Moderate fouling, e.g. vessel boilers |
| 110 kg/m3 | Light fouling |
| 145 kg/m3 | Heavy duty, e.g. oil and gas separators |
| 170 kg/m3 | General purpose, not totally clean |
| 195 kg/m3 | Optimum efficiency & pressure drop |
| 240 kg/m3 | High density with high separation efficiency |
| 112 kg/m3 | General purpose, clean service |
| 145 kg/m3 | Find droplet removal in clean service |
Where are DEMISTER units used?
Knockout drums and separators - save on capital costs by decreasing vessel size-recover costly fatty acids from stream-reduce compressor maintenance by preventing scale build-up.
Absorbers - reduce overhead losses of glycols in dehydrators to no more than 0.1 gal/MMSCF natural gas-cut losses of absorption oil and amines in CO2 systems.
Scrubbers - reduce chemical discharges from Kraft mill smelt dissolver tank to less than 0.11 kg/dry ton (0.25 lb/dry ton) of pulp-improve scrubber efficiency by removing particulates carried in entrained liquids.
Distillation columns - improve product purities and increase throughput capacities for petrochemicals, organic intermediates, fine chemicals.
Evaporators - prevent carryover loss of valuable products, keep condensate TDS <10 ppm for highest quality boiler feed water-clean up vacuum ejector stream discharge-lower maintenance in vapor re-compression systems.
High pressure steam systems - provide dry steam- cut TDS to <10 ppb in condensate-eliminate build-up on turbine blades.
Refinery towers - increase throughput capacity-take deeper cuts for greater product yields - prolong catalyst life in downstream cracking and reforming units by reducing carbon and metals in side
draws-use lower grade crudes.
Wire Mesh Demister Installation:
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