Vertical Separators Gas Handling Capacity

Historically, the gas handling capacity of conventional vertical separators that employ mist extractors has normally been calculated from the Souders and Brown equation, Eq 7-8, using “experience-based” K factors. Typical K values for vertical separators from API 12J7 are presented in Fig. 7-18. In qualitative terms, the ranges of K given above may be taken […]

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Separators with Mist Extractors Gas Handling Capacity

Of the four major components of a separator that were discussed in a previous section, the mist extractor has the most impact on separated gas quality with respect to carried over liquid content. The sizing equations and parameters provided in the mist extraction section size the mist extractor itself, not the actual separation vessel. The […]

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Separators without Mist Extractors Gas Handling Capacity

Separators without mist extractors are not frequently utilized. The most common application of a vapor-liquid separator that does not use a mist extractor is a flare knockout drum. Mist extractors are rarely used in flare knockout drums because of the potential for plugging and the serious implications this would have for pressure relief. is typically […]

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Cyclonic

There are several types of centrifugal separators that serve to separate entrained liquids, and solids if present, from a gas stream. For mist extraction applications, reverse-flow, axialflow and recycling axial-flow cyclones are typically used in multi-cyclone “bundles.” Cyclonic mist extractors use centrifugal force to separate solids and liquid droplets from the gas phase based on […]

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Vane

Vane or chevron-type mist extractors (vane-pack) use relatively closely spaced blades arranged to provide sinusoidal or zig-zag gas flow paths. The changes in gas flow direction combined with the inertia of the entrained liquid droplets, cause impingement of the droplets onto the plate surface, followed by coalescence and drainage of the liquid to the liquid […]

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