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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 vessel, and can act as a 2-phase or 3-phase separator. A vapor–liquid separator may also be referred to as a flash drum, breakpot, knock-out drum or knock-out pot, compressor ...
Vapor–liquid equilibrium. In thermodynamics and chemical engineering, the vapor–liquid equilibrium (VLE) describes the distribution of a chemical species between the vapor phase and a liquid phase. The concentration of a vapor in contact with its liquid, especially at equilibrium, is often expressed in terms of vapor pressure, which will be ...
Calculate the maximum allowable vapor velocity in the vessel by using the Souders–Brown equation: where: = maximum allowable vapor velocity, m/s. = liquid density, kg/m³. = vapor density, kg/m³. = 0.107 m/s (when the drum includes a de-entraining mesh pad) Then the cross-sectional area of the drum can be found from: where:
Phase separation. A phase diagram for two isotopes of helium, showing at bottom a range of temperatures and ratios at which they will phase-separate. Phase separation is the creation of two distinct phases from a single homogeneous mixture. [1] The most common type of phase separation is between two immiscible liquids, such as oil and water.
A separatory funnel used for liquid–liquid extraction, as evident by the two immiscible liquids.. Liquid–liquid extraction, also known as solvent extraction and partitioning, is a method to separate compounds or metal complexes, based on their relative solubilities in two different immiscible liquids, usually water (polar) and an organic solvent (non-polar).
A laboratory fractionating column is a piece of glassware used to separate vaporized mixtures of liquid compounds with close volatility. Most commonly used is either a Vigreux column or a straight column packed with glass beads or metal pieces such as Raschig rings. Fractionating columns help to separate the mixture by allowing the mixed vapors ...
Stripping (chemistry) Stripping is a physical separation process where one or more components are removed from a liquid stream by a vapor stream. [1] In industrial applications the liquid and vapor streams can have co-current or countercurrent flows. Stripping is usually carried out in either a packed or trayed column.
Supercritical ethane, fluid. [1] In thermodynamics, a critical point (or critical state) is the end point of a phase equilibrium curve. One example is the liquid–vapor critical point, the end point of the pressure–temperature curve that designates conditions under which a liquid and its vapor can coexist. At higher temperatures, the gas ...