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A typical vapor–liquid separator including commonly a de-entrainment pad and sometimes an inlet distributor Alloy 20 mesh or demister pad used in sulfuric acid production. In chemical engineering, a vapor–liquid separator is a device used to separate a vapor–liquid mixture into its constituent phases. It can be a vertical or horizontal ...
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It has also been used for the same purpose in designing trayed fractionating columns, trayed absorption columns and other vapor–liquid-contacting columns. A vapor–liquid separator drum is a vertical vessel into which a liquid and vapor mixture (or a flashing liquid) is fed and wherein the liquid is separated by gravity, falls to the bottom ...
The vapor phase enters in the bottom of the column and exits out of the top. Inside of the column are trays or plates. These trays force the liquid to flow back and forth horizontally while the vapor bubbles up through holes in the trays. The purpose of these trays is to increase the amount of contact area between the liquid and vapor phases.
Demister (vapor), removes liquid droplets from gas streams; Distillation, used for mixtures of liquids with different boiling points; Drying, removes liquid from a solid by vaporization or evaporation; Electrophoresis, separates organic molecules based on their different interaction with a gel under an electric potential (i.e., different travel)
Unstable node: This is the pure component or the azeotropic point with the lowest boiling temperature and highest vapor pressure in a distillation region. Residue curve never reach an unstable node. Saddle: These are pure components or azeotropic points with an intermediate boiling temperature and vapor pressure in a distillation region.
A Vapor horn is a device used primarily for two-phase (liquid/vapor) feeds to petroleum refinery fractionators, which is designed to provide both bulk phase separation of the vapor and liquid, and to provide initial distribution of the feed vapor.
Vessels that are used to intentionally “flash” a mixture of gas and saturated liquids are aptly named "flash drums." A type of vapor-liquid separator. A venting apparatus is used in these vessels to prevent damage due to increasing pressure, extreme cases of this are referred to as boiling liquid expanding vapor explosion (BLEVE).