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Reactive distillation information


Reactive distillation is a process where the chemical reactor is also the still. Separation of the product from the reaction mixture does not need a separate distillation step which saves energy (for heating) and materials. This technique can be useful for equilibrium-limited reactions such as esterification and ester hydrolysis reactions. Conversion can be increased beyond what is expected by the equilibrium due to the continuous removal of reaction products from the reactive zone. This approach can also reduce capital and investment costs.[1]

The conditions in the reactive column are suboptimal both as a chemical reactor and as a distillation column, since the reactive column combines these. The introduction of an in situ separation process in the reaction zone or vice versa leads to complex interactions between vapor–liquid equilibrium, mass transfer rates, diffusion and chemical kinetics, which poses a great challenge for design and synthesis of these systems. Side reactors, where a separate column feeds a reactor and vice versa, are better for some reactions, if the optimal conditions of distillation and reaction differ too much.

  1. ^ Fogler, H. Scott (2002). "4". Elements of Chemical Reaction Engineering (Third ed.). India: Prentice-Hall India. pp. 197–200. ISBN 81-203-2234-7.

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Reactive distillation

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Reactive distillation is a process where the chemical reactor is also the still. Separation of the product from the reaction mixture does not need a separate...

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Distillation

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Distillation, also classical distillation, is the process of separating the component substances of a liquid mixture of two or more chemically discrete...

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Unit operation

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some unit operations which combine even these categories, such as reactive distillation and stirred tank reactors. A "pure" unit operation is a physical...

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Catalytic distillation

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Catalytic distillation is a branch of reactive distillation which combines the processes of distillation and catalysis to selectively separate mixtures...

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Potassium

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for producing dry and air-free solvents. It can also be used in reactive distillation. The ternary alloy of 12% Na, 47% K and 41% Cs has the lowest melting...

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Methyl acetate

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is famous because of Eastman Kodak's intensified process using a reactive distillation. In the presence of strong bases such as sodium hydroxide or strong...

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Dimethyl carbonate

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Bîldea, Costin S.; Kiss, Anton A. (2022-02-01). "Novel eco-efficient reactive distillation process for dimethyl carbonate production by indirect alcoholysis...

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Hydroxymethylfurfural

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the use of ionic liquids, continuous liquid-liquid extraction, reactive distillation and solid acid catalysts to either remove the HMF before it reacts...

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Oil refinery

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carrying streams of fluids between large chemical processing units, such as distillation columns. In many ways, oil refineries use many different technologies...

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Nonmetal

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reactivity. Highly reactive metals fill most of the s- and f-blocks on the left, bleeding into the early part of the d-block. Thereafter, reactivity generally...

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Bromine

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"stench", referring to its sharp and pungent smell. Elemental bromine is very reactive and thus does not occur as a free element in nature. Instead, it can be...

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Methylene diphenyl diisocyanate

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possible, namely "phosgenations first" and "step-wise phosgenations". Distillation of the mixture gives a mixture of oligomeric polyisocyanates, known as...

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Inert gas

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compounds under some conditions. The inert gases are obtained by fractional distillation of air, with the exception of helium which is separated from a few natural...

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Adhesive

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approximately 200,000 years ago, when Neanderthals produced tar from the dry distillation of birch bark for use in binding stone tools to wooden handles. The first...

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APMonitor

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index-2 differential-algebraic equations: Applications to reactive flash and reactive distillation systems". Computers & Chemical Engineering. 49: 61–69....

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Ethanol

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used in the so-called hybrid membrane distillation process. This process uses a pre-concentration distillation column as the first separating step. The...

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Isopropyl alcohol

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from water and other by-products by distillation. Isopropyl alcohol and water form an azeotrope, and simple distillation gives a material that is 87.9% by...

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Alembic

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alchemical still consisting of two vessels connected by a tube, used for distillation of liquids. The complete distilling apparatus consists of three parts:...

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Diallyl carbonate

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with catechol. Catechol carbonate reacts with allyl alcohol in reactive distillation system with sodium methoxide or other base catalyst. This polymer...

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Volatile organic compound

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regulations include exemptions for VOCs that are determined to be non-reactive, or of low-reactivity in the smog formation process. Prominent is the VOC regulation...

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Toluene diisocyanate

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as a byproduct and is a major source of industrial hydrochloric acid. Distillation of the raw TDI mixture produces an 80:20 mixture of 2,4-TDI and 2,6-TDI...

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Noble gas

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elements are odorless, colorless, monatomic gases with very low chemical reactivity and cryogenic boiling points. The noble gases' inertness, or tendency...

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Eugeny Kenig

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Weinheim: Wiley-VCH, 2010 Kenig, E.Y. and Górak, A. Modeling of Reactive Distillation, In: Modeling of Process Intensification (Ed. F. Keil), Weinheim:...

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Pyrrole

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that darkens readily upon exposure to air, and is usually purified by distillation immediately before use. Pyrrole has a nutty odor. Pyrrole is a 5-membered...

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