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The demisting cyclone is a high-capacity, high-efficiency gas-liquid separation device using centrifugal force to remove entrained liquid from vapor streams. Vapor enters the cyclone tubes axially through a fixed swirl element, generating centrifugal motion that forces liquid droplets onto the tube inner wall. The liquid film exits through slits in the tube wall, collects in the cyclone box, and drains to the vessel bottom while clean gas exits from the top. The welded box design has no moving parts and requires no maintenance. Capable of handling high vapor and liquid loads across a wide pressure range in horizontal and vertical vessels. Commonly used to debottleneck existing separators with liquid carryover problems. TrayTec supplies and installs demisting cyclone assemblies to your vessel specification.
Tested at high pressure
High capacity high efficiency
No moving parts
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Demisting cyclones are specified when vapor velocities and liquid loads exceed the operating limits of mesh or vane devices, or when maximum separation efficiency is required in a compact vessel footprint. They handle high-pressure hydrocarbon service effectively across a wide range of gas and liquid flow rates. Contact TrayTec with your vessel operating conditions to confirm whether a demisting cyclone is the right device for your application.
Demisting cyclones are typically combined with an inlet diffuser at the vessel inlet to reduce momentum and provide bulk gas-liquid separation, and a mesh agglomerator upstream of the cyclones to coalesce fine droplets into larger sizes before they enter the cyclone tubes. This three-stage arrangement achieves separation efficiencies exceeding 99.5% in high-pressure hydrocarbon service. Contact TrayTec to confirm the correct combination of devices for your vessel and process.
Yes. Demisting cyclones are a common retrofit solution for existing separators experiencing liquid carryover at increased throughput. The no-weld retrofit approach installs the cyclone assembly through the existing manway without vessel shell modification, post-weld heat treatment, or re-certification. Contact TrayTec with your existing vessel drawing and operating conditions to assess retrofit feasibility.
