Implementation of Optimal Operation for Heat Integrated Distillation Columns

Engelien, Hilde K.; Larsson, T.; Skogestad, Sigurd

doi:10.1205/026387603762878755

Cited by 23 publications

(14 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Distillation is considered one of the most important separation techniques for multicomponent mixtures [1]. However, its main disadvantage is associated with the large amount of energy required in the reboiler to purify the mixture [2,3].…”

Section: Introductionmentioning

confidence: 99%

Production of Methyl Oleate in Reactive‐Separation Systems

et al. 2016

View full text Add to dashboard Cite

The esterification of oleic acid and methanol using sulfuric acid as a homogeneous catalyst is studied in reactive-separation systems. The conversion of the free fatty acid was investigated in two different experiments with the molar ratio of methanol/oleic acid, amount of catalyst, temperature, and reaction time as variables. The conversion of the free fatty acid was found to depend strongly on the molar ratio of methanol/oleic acid. The reaction time had a direct effect on the conversion of the free fatty acid, and this conversion decreased with higher temperature. These results were valuable for a preliminary study on biodiesel production, using an acid homogeneous catalyst in a reactive dividing-wall distillation column.

show abstract

Section: Introductionmentioning

confidence: 99%

Production of Methyl Oleate in Reactive‐Separation Systems

et al. 2016

View full text Add to dashboard Cite

show abstract

“…It is known that distillation is used for the separation of about 95% of all fluid separations in the chemical, industry, and that around 3% of the total energy consumption throughout the world is used in distillation units [7]. According to some recent estimates, about 40% of energy involved in refinery and other continuous chemical processes are consumed in distillation [21].…”

Section: Introductionmentioning

confidence: 99%

Advanced exergy analysis of distillation tower and simulation and optimization by hysys

Darabi

Mohammadiun

2015

Int. J. Sci. World

View full text Add to dashboard Cite

Exergy rate profiles, exergetic efficiency and irreversibility were used to examine the driving forces in multicomponent distillation system with the view to identifying feasible and efficient operating parameters. The mixture comprised of 5% propane, 15% iso butane, 25% n-butane, 20% iso pentane and 35% n-pentane. Operating variables were feed temperature (-30oC and -80oC), pressure (800KPa and 1200KPa), and reflux-ratio (2 and 6). Sensitivity analysis was carried out to examine the effect of varying operating parameters on the systems. Stage-by-stage system exergy analysis was estimated. Column profiles of a base case -30oC, -80oC, -30oC-reflus ratio 6,80oC -80oC reflux ratio 6 and base case reflux ratio 6 did not cross thus are thermodynamically feasible. Base case -30oC-reflux ratio 2, -80oC-reflux ratio 2, and base case-reflux ratio 2 were crossed and constricted and are infeasible. Base case results gave efficiency of 81.7% at depropanizer and 65.2% at debutanizer. Base cases sensitivity results with -30oC, -80oC and reflux ratio 6, efficiency range 57.40 -70% and 65.20% -54.90% for depropanizer and debutanizer respectively. Spitted cases gave 81.7% and 62.20% with more scatter profiles. Splitted feed base case -30oC design gave the lowest overall system exergy loss rate of 1.12E+6 and efficiency of 95.70%.

show abstract

“…Tyreus and Luyben, Gross et al ,. and Engelien et al . discussed some control issues of multi‐effect distillation.…”

Section: Introductionmentioning

confidence: 99%

Heat integration of a tetrahydrofuran recovery system to save energy

2013

Asia-Pacific J Chem Eng

View full text Add to dashboard Cite

Based on an existing pressure-swing distillation process for tetrahydrofuran recovery, heat integration system is investigated in which the condenser of the high-pressure column is integrated with the reboiler of the low-pressure column. Rigorous simulations for the base case and the retrofitted one are carried out with the commercial software ASPEN PLUS. Simulation results show that the integrated structure is feasible, and the energy consumption is reduced by 33.31% compared with the base case. Meanwhile, the product purity is increased in the integrated structure.

show abstract

Implementation of Optimal Operation for Heat Integrated Distillation Columns

Cited by 23 publications

References 8 publications

Production of Methyl Oleate in Reactive‐Separation Systems

Production of Methyl Oleate in Reactive‐Separation Systems

Advanced exergy analysis of distillation tower and simulation and optimization by hysys

Heat integration of a tetrahydrofuran recovery system to save energy

Contact Info

Product

Resources

About