Synthesis of distillation trains by thermodynamic analysis

Gomez-Munoz, A.; Seader, J. D.

doi:10.1016/0098-1354(85)85011-0

Cited by 30 publications

(4 citation statements)

References 18 publications

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“…For an energy-demanding process, the rational efficiency in accordance with the second law of thermodynamics can be defined according to Gomez-Munos et al 21 2.2. Distillation Column Feasibility Assessment.…”

Section: Calculation and Assessment Approachmentioning

confidence: 99%

“…For an energy-demanding process, the rational efficiency in accordance with the second law of thermodynamics can be defined according to Gomez-Munos et al and De Nevers et al. : normalΔ S normalB % = ( Δ S B / Δ S column ) × 100 normalΔ S normalC % = ( Δ S C / Δ S column ) × 100 normalΔ S section_flow % = [ false( normalΔ S section_flow − S FE − S normalF false) / Δ S column ] × 100 …”

Section: Calculation and Assessment Approachmentioning

confidence: 99%

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Entropy Flow and Energy Efficiency Analysis of Extractive Distillation with a Heavy Entrainer

Benyounes

Shen

Gerbaud

2014

Ind. Eng. Chem. Res.

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The minimization of the entropy production is equivalent to minimizing the work or energy consumption required by a separation process. Sources of entropy creation during the extractive distillation of a minimum-and maximumboiling azeotropic mixture with a heavy entrainer are evaluated at each column stage in accordance with the second law of thermodynamics, and the distribution of entropy flow in different sections of the column is analyzed. Results show that mixing on feed trays and heat exchange in the reboiler and condenser are the main sources of entropy production. The temperature of the main feed and entrainer feed does not significantly affect the irreversibility of the process at the reference temperature of all flows. Although optimal values can be proposed to achieve a minimum isothermal work, the energy loss of the real process steadily increases with increases in the entrainer/feed flow rate ratio and reflux. The influence of the feed tray shows that product purity tends to vary inversely with energy loss.

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Section: Calculation and Assessment Approachmentioning

confidence: 99%

Section: Calculation and Assessment Approachmentioning

confidence: 99%

Entropy Flow and Energy Efficiency Analysis of Extractive Distillation with a Heavy Entrainer

Benyounes

Shen

Gerbaud

2014

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

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“…In this section, a brief, high‐level thermodynamic analysis of conventional distillation is performed. The foundation of this work is well‐known, but it is included here to serve as a basis for comparison with the SVRC scheme.…”

Section: Thermodynamic Analysis: Conventional Distillation Columnsmentioning

confidence: 99%

Vapor recompression for efficient distillation. 1. A new synthesis perspective on standard configurations

et al. 2013

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The vapor recompression (VRC) distillation scheme is examined and compared with conventional distillation in an analysis spanning fundamental thermodynamics, high-level calculations, and rigorous simulation. The purpose of this article is three-fold: first, it provides greater insight into VRC distillation. Second, it provides a process synthesis tool to rapidly assess whether VRC is likely to be more thermodynamically favorable than conventional distillation for a given split. Third, it may be used to determine if VRC can be implemented practically. The tool presented in the article is consolidated in the form of a single chart, for which only the top and bottom product temperatures are required to determine the outcome. Using this chart, first-pass estimates can be obtained with no calculations whatsoever. The tool, which appears to be the first of its kind in this context, is validated with examples and rigorous simulation.

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“…Studies of the integration system are based on a combination of a reaction system and a separation system. The reaction system 13 and separation system 14 are studied separately as two isolated units in traditional chemical process design. The problem is chiefly that the whole process may not perform best under the optimal conditions after integration based on the two systems.…”

Section: Introductionmentioning

confidence: 99%

Process Characteristics of Synthesis Calcium Carbonate Using Desulfurization Gypsum in Integrated Reaction and Separation Equipment

Zhao

et al. 2017

Ind. Eng. Chem. Res.

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Desulfurization gypsum is a byproduct of limestone–gypsum desulfurization. Preparation of desulfurization gypsum in CaCO3 and (NH4)2SO4 is a means of recycling. This paper presents integrated reaction and separation equipment and illustrates the desulfurization gypsum operation efficiency. Different additives and stirring programs were used to control crystal formation and explore nucleation growth. In addition, the separation mechanism and process characteristics of the integrated equipment have been assigned. Also, the flow trajectories and velocity contour were stimulated to study the separation characteristics, and the movement and distribution in the equipment were studied using a computational fluid dynamics approach. We found that a higher concentration of reactants leads to a higher separation efficiency. Moreover, the moisture content of solid products is low, and the solid–liquid separation efficiency decreases when the liquid velocity increases. The best results are obtained with a chemical reaction conversion rate and separation efficiency of 83.14 and 81.83%, respectively.

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Synthesis of distillation trains by thermodynamic analysis

Cited by 30 publications

References 18 publications

Entropy Flow and Energy Efficiency Analysis of Extractive Distillation with a Heavy Entrainer

Entropy Flow and Energy Efficiency Analysis of Extractive Distillation with a Heavy Entrainer

Vapor recompression for efficient distillation. 1. A new synthesis perspective on standard configurations

Process Characteristics of Synthesis Calcium Carbonate Using Desulfurization Gypsum in Integrated Reaction and Separation Equipment

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