extractive distillation


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extractive distillation

[ik′strak·tiv ‚dis·tə′lā·shən]
(chemical engineering)
A distillation process to separate components from eutectic mixtures; a solution of the mixture is cooled, causing one component to crystallize out and the other to remain in solution; used to separate p-xylene and m-xylene, using n-pentane as the solvent.
References in periodicals archive ?
Tenders are invited for the Development of an integrated mathematical model of extractive distillation processes in a distillation column A.04.137.000.
Pyrrolidone is also utilized as a part of recovery of hydrocarbons in large-scale operations by extractive distillation. Recovery of unadulterated hydrocarbons in petrochemical processing is predicted to drive the worldwide pyrrolidone market during the forecast horizon.
They address types of column internals and the advantages and disadvantages of equipment used for vapor-liquid contacting and separation; the features of the main types of vapor-liquid contactors, including distillation trays, random packings, and structure packings; equipment design, column configuration, and operation-related aspects of dividing-wall columns; the separation of azeotropic mixtures in extractive distillation; reactive distillation; the features of vacuum and high-pressure distillation; and laboratory distillation and scale-up.
In 1938, Natta studied the production of synthetic rubber and was the first to accomplish physical separation of butadiene from 1-butadiene by a new method of extractive distillation. His work on the strereospecific polymerization of polypropylene led to the development of isotactic polypropylene, first produced on an industrial scale for film, fiber, and resins uses in 1957.
Extractive Distillation, This is a similar process to the azeotropic.
They have been used to simulate distillation columns, absorbers, azeotropic and extractive distillation operations (see the example below), cryogenic distillations, and liquid-liquid extraction [see reference 2 for literature citations].
cleaning of residues of petroleum products, dirt, sediments, sludge and corrosion products of the inner surface of the casing of the column c-101 of the extractive distillation unit of benzene (ted)
These were the use of molecular sieves, extractive distillation and operating under a vacuum to take advantage of the much improved relative volatility of acetone to water at lower temperatures.
cleaning of oil residues, dirt, sediments, sludge and corrosion products of the inner surface of the body of the column c-101 of the extractive distillation unit of benzene (uedb) tch.
Request for quotations : Selection of the equipment supplier of the process control system in accordance with the attached documentation within the framework of the project modernization of the control system of the benzol extractive distillation unit of jsc mozyr oil refinery to replace the exhausted controllers and power supply units of the uedb (modernization and expansion of the existing process control system)
An extractive distillation column was installed at the TANECO Complex.
Technologies to be licensed under the contract include the UOP Naphtha Hydrotreating process to pre-treat reforming feed, the CCR Platforming process to convert naphtha to high-octane blending components, and Extractive Distillation (ED) Sulfolane to recover high-purity benzene and toluene.