Results 21 to 30 of about 566,385 (305)

Flexibility for Absorption and Distillation Columns

open access: yesChemical Engineering Transactions, 2018
The flexibility of absorption and distillation columns is limited by macroscopic fluid dynamic phenomena like flooding, entrainment, weeping or dewetting. The design of those columns is a crucial task and depends on the separation task, the needed capacity and the fluid dynamic boundaries.
Riese Julia, Grunewald Marcus
openaire   +2 more sources

Dynamic models for start-up operations of batch distillation columns with experimental validation [PDF]

open access: yes, 2004
The simulation of batch distillation columns during start-up operations is a very challenging modelling problem because of the complex dynamic behaviour. Only few rigorous models for distillation columns start-up are available in literature and generally
Elgue, Sébastien   +5 more
core   +1 more source

New column configurations for pressure swing batch distillation I. Feasibility Studies [PDF]

open access: yes, 2007
The feasibility of the pressure swing distillation in different batch column configurations is investigated. The method is based on the assumption of maximal separation. Besides studying the well known batch configurations (rectifier, stripper, middle
Modla, Gábor
core   +1 more source

Simulation of the multicomponent distillation of spearmint essential oil by a predictive Soave-Redlich-Kwong equation of state and comparison with experiments [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2014
In this study, enrichment in major component of spearmint oil has been studied by continuous multicomponent distillation. A mathematical model was evaluated to predict the enrichment by multicomponent distillation of spearmint oil.
Asadi Saeid
doaj   +1 more source

Nonlinear Observers for Distillation Columns

open access: yesIFAC Proceedings Volumes, 1994
Abstract A nonlinear observer, capable of accurate on-line-calculation of the product and feed composition of a binary distillation column is presented. The observer is based on a nonlinear reduced-order process model. In simulation studies the observer shows better performance, better robustness and easier adaption to real plant dynamics than an ...
A. RIX, C. SKRCZYPCZEK, H. GELBE
openaire   +1 more source

Simulated Heat Integration Study of Reactive Distillation Column for Ethanol Synthesis [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2019
Ethanol is largely used as a solvent in the synthesis of varnishes and perfumes. It is also used as a preservative for biological products, fuel, and gasoline additives.
Rajeev Kumar Dohare   +5 more
doaj  

Multivariable Control of Distillation Column

open access: yesIFAC Proceedings Volumes, 1995
Abstract Three methods for discrete control of distillation column are compared. The distillation column, separating binary mixture of methanol-water, is regarded as a two inputs - two outputs system. The controller design for all methods is made by the pole placement method, but three different variants are used: The multivariable case, the ...
Jiří Macháĉek, Josef Kotyk
openaire   +1 more source

Algorithm and software for the optimal technological design of a system of simple distillation columns

open access: yesТонкие химические технологии, 2021
Objectives. The formalized problem of the optimal design of distillation column systems belongs to the class of mixed integer nonlinear program problems.
N. N. Ziyatdinov   +3 more
doaj   +1 more source

Design and development of bubble-cap tray column for continuous transesterification plant in coconut-oil-based biodiesel production

open access: yesThe Indian Journal of Agricultural Sciences, 2016
A study was carried out on production of biodiesel from coconut oil using alkali catalyzed transesterification process by two different reactive distillation columns, viz. sieve tray and bubble-cap tray column.
P GNANASELVI, P SUBRAMANIAN
doaj   +1 more source

Infinite/infinite analysis as a tool for an early oriented synthesis of a reactive pressure swing distillation [PDF]

open access: yes, 2007
The study contributes to the characterization of an original reactive pressure swing distillation system. The methyl acetate (MeAc) transesterification with ethanol (EtOH) to produce methanol (MeOH) and ethyl acetate (EtAc) is shown as illustrative ...
Reneaume, Jean-Michel   +6 more
core   +1 more source

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