نتایج جستجو برای: Dividing-wall column

تعداد نتایج: 257472  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2015
alireza arjomand mohammad ali fanaei

this paper deals with optimal operation of a three-product dividing-wall column (dwc). the main idea is to design a control structure, through a systematic procedure for plantwide control, with an objective to achieve desired product purities with the minimum use of energy. exact local method is used to find the best controlled variables as single measurement or combination of measurements base...

2008
RALUCA ISOPESCU ALEXANDRU WOINAROSCHY LOREDANA DRÃGHICIU

The paper presents the analysis of the thermal efficiency of a dividing wall distillation column and the influence of the feed composition on the reduction of energy consumption compared to a classical scheme of multicomponent mixture separation. The study relays on rigorous simulations in HYSYSTM using thermodynamically equivalent schemes. A case study is presented for the separation of a hydr...

2006
Bernie Slade

The successful revamp of a conventional tray Xylenes Distillation Column (3800 mm / 4300 mm diameter) is described. The column takes a xylene side-stream from reformate to feed an aromatics plant to make higher value products. Changing the column configuration to a Dividing Wall Column (DWC) resulted in improved product purity and significant energy savings. The project cycle is detailed includ...

2010
Christoph Hiller Sandra Storm Matthias Leipold Georg Fieg

The dividing wall column is experiencing a growing interest in industry. The concern about difficult controllability vanishes further and this leads to growing demand of approved guidelines for the design which is indeed time consuming if no expert knowledge is available. In this contribution the design task of a dividing wall column is treated as multi objective optimisation. Backbone of this ...

2013
Nguyen Van Duc Long Moon Yong Lee

−Dividing wall columns, capable of reducing the energy required for the separation of ternary mixtures, were explored for the energy-efficient integration of debutanization and deisobutanization. A new practical approach to the design and optimization of dividing wall columns was used to optimize dividing wall columns. A conventional dividing wall column and a multi-effect prefractionator arran...

Journal: :Computers & Chemical Engineering 2012
Anton A. Kiss David J.-P. C. Suszwalak

Dimethyl ether (DME) is of great industrial interest due to its use as clean fuel for diesel engines or in combustion cells, as a precursor to other organic compounds, as well as a green aerosol propellant that can effectively replace chloro-fluoro-carbons. Conventionally, high purity DME is synthesized by dehydration of methanol produced from syngas, in a process involving a catalytic fixed-be...

Journal: :Processes 2021

Dividing-wall columns (DWCs) are intensified processes that have attracted industrial and academic attention due to the reduction in operating installation costs compared traditional distillation systems. Several methodologies available for design of DWCs. Most them consist three parts: an analysis variables; structural (topology); optimization resulting preliminary design. This paper aims stud...

Journal: :Computers & Chemical Engineering 2021

• A feasible path-based procedure allows to bypass the simulation failures due non-ideal thermodynamics or complex optimization algorithms. The proposed use a shortcut design provided by ProSimPlus® process simulator initialize algorithm coupled with rigorous simulations. Although “non-optimal”, DWC obtained via fulfills expectations both from an economic and environmental point of view respect...

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