Economic evaluation of energy saving alternatives in extractive distillation process

Brito, Karoline Dantas; Cordeiro, Gardênia Marinho; Figueirêdo, M. F.; Vasconcelos, Luís Gonzaga Sales; Brito, Romildo Pereira

doi:10.1016/j.compchemeng.2016.06.013

Cited by 38 publications

(20 citation statements)

References 32 publications

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“…Regarding design, optimization and control, the community is much larger. It was also investigated by the aforementioned authors (Lang, 1992;Lang et al, 1994Lang et al, , 1995Lelkes et al, 1998aLelkes et al, , 2002Lelkes et al, , 2003aYou et al, 2015aYou et al, ,b, 2016a and several teams all over the world: American (Luyben, 2008a(Luyben, ,b, 2013(Luyben, , 2015(Luyben, , 2016a(Luyben, ,b,c, 2018a, Chinese from Taiwan region (Arifin and Chien, 2008;Hsu et al, 2010;Wu et al, 2013;Chen et al 2015Chen et al , 2016, Brasilian (De Figueirêdo et al, 2011Brito, 2015;Brito et al, 2016), Colombian (Gil et al, 2009(Gil et al, , 2012(Gil et al, , 2014, Italian (Errico and Rong, 2012;Errico et al, 2013Errico et al, , 2015 and Mexican (Gutiérrez-Guerra et al, 2009;Torres-Ortega et al, 2014; teams and recently many teams from mainland China (Lei et al, 2002(Lei et al, , 2014Li et al, 2016Han et al 2015;Luo et al, 2014Luo et al, , 2015Wang et al, 2012Wang et al, , 2015aWang et al, , 2016Wang et al, , 2018aZhang et al, 2014…”

Section: 1mentioning

confidence: 99%

“…A variety of objective functions has been used in the literature. Minimizing TAC that incorporates both operational and capital costs, is a wide-spread choice (Kossack et al, 2008;Emhamed et al, 2008;Wang et al, 2012Wang et al, , 2015aMedina-Herrera et al, 2014;Brito et al, 2016;Lo and Chien, 2017;Ahmadian Behrooz, 2017). A similar measure, called economic potential was used by Langston et al (2005).…”

Section: Optimizationmentioning

confidence: 99%

“…Apart from the entrainer selection, and whatever the solving methods or the continuous or batch operating mode, the following variables should be optimized for extractive distillation. These are the numbers of trays of columns, feed locations, reflux ratios (boilup ratio), distillate flow rates (bottom flow rates) and entrainer flow rate (Mujtaba, 1999;Milani, 1999;Munoz et al, 2006;Arifin and Chien 2008;Kossack et al, 2008;Lek-Utaiwan et al, 2011;García-Herreros et al, 2011;Wang et al, 2012;Li and Bai 2012;Duc Long and Lee 2013;Luo et al, 2014;Han et al, 2015;Shen et al, 2015a;Brito et al, 2016;Ebrahimzadeh et al, 2016;Aniya et al, 2016;Zhao et al, 2017b;Li et al, 2017 and others).…”

Section: Solving Strategiesmentioning

confidence: 99%

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Review of extractive distillation. Process design, operation, optimization and control

Gerbaud

Rodríguez-Donis

Hégely

et al. 2019

Chemical Engineering Research and Design

190

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Operation and control Extractive distillation processes enable the separation of non-ideal mixtures, including minimum or maximum boiling azeotropes and low relative volatility mixtures. Unlike azeotropic distillation, the entrainer fed at another location than the main mixture induces an extractive section within the column. A general feasibility criterion shows that intermediate and light entrainers and heterogeneous entrainers are suitable along common heavy entrainers. Entrainer selection rules rely upon selectivity ratios and residue curve map (rcm) topology including univolatility curves. For each type of entrainer, we define extractive separation classes that summarize feasibility regions, achievable products and entrainer-feed flow rate ratio limits. Case studies are listed as Supplementary materials. Depending on the separation class, a direct or an indirect split column configuration will allow to obtain a distillate product or a bottom product, which is usually a saddle point of rcm. Batch and continuous process operations differ mainly by the feasible ranges for the entrainer-feed flow rate ratio and reflux ratio. The batch process is feasible under total reflux and can orient the still path by changing the reflux policy. Optimisation of the extractive process must systematically consider the extractive column along with the entrainer regeneration column that requires energy and may limit the product purity in the extractive column through recycle. For the sake of reducing the energy cost and the total cost, pressure change can be beneficial as it affects volatility, or new process structures can be devised, namely heat integrated extractive distillation, extractive divided wall column or processes with preconcentrator.

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Section: 1mentioning

confidence: 99%

Section: Optimizationmentioning

confidence: 99%

Section: Solving Strategiesmentioning

confidence: 99%

See 1 more Smart Citation

Review of extractive distillation. Process design, operation, optimization and control

Gerbaud

Rodríguez-Donis

Hégely

et al. 2019

Chemical Engineering Research and Design

190

View full text Add to dashboard Cite

show abstract

“…Studies [45][46][47][48][49] on bioethanol separation used PBP of 10 years for TAC calculation (and not for equipment depreciation in detailed economic analysis) as opposed to reasonable 3-5 years used in industrial practice. Hence the effect of using PBP of 3, 5, 7 and 10 years on TAC for the proposed processes is studied.…”

Section: Effect Of Payback Period On Tacmentioning

confidence: 99%

Development and optimization of a novel process of double‐effect distillation with vapor recompression for bioethanol recovery and vapor permeation for bioethanol dehydration

Singh

Rangaiah

2018

J of Chemical Tech & Biotech

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BACKGROUND Bioethanol, an important biofuel, obtained from biomass fermentation is dilute and unsuitable for direct use as fuel for transportation. Its recovery and dehydration to ∼99.5 wt% ethanol is energy‐intensive because of dilute feed (∼10 wt% ethanol) and occurrence of ethanol–water azeotrope. From an energy efficiency perspective, hybrid separation processes consisting of a membrane‐based module coupled with distillation are a promising alternative to conventional separation by distillation alone. RESULTS The present article proposes the novel process of double‐effect distillation with vapor recompression (DED) for bioethanol recovery followed by vapor permeation (VP) for bioethanol dehydration (to 99.8 wt% ethanol) from a ternary feed of ethanol (10 wt%), water (89.9 wt%) and CO2 (0.1 wt%) and compares it with the process of simple distillation followed by vapor permeation (D‐VP). Multi‐objective optimization is performed for both processes, and the obtained Pareto‐optimal solutions for minimizing fixed capital investment and annual operating cost are presented and discussed. Compared with the optimal D‐VP process, the optimal DED‐VP process is found to be better, with 17 and 11% savings in energy consumption and total annual cost (TAC) respectively. CONCLUSION Specific energy consumption (SEC) of the DED‐VP process is 5% lower than that of the hybrid process of distillation for recovery followed by pressure swing adsorption for dehydration (D‐PSA) used industrially. Continued developments in membranes that can provide high permeance, selectivity and/or operating life can further reduce TAC and SEC of the DED‐VP process. © 2018 Society of Chemical Industry

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“…A mixture of acetone (A) + methanol (M) (+ water (W) or dimethylsulfoxide (DMSO)) was selected as the object of research. The choice was made because the system has been experimentally studied [15][16][17][18][19][20], and the solvents have proven their effectiveness in the ED process [20][21][22][23][24]. The comparison of these solvents has not been carried out before.…”

Section: Introductionmentioning

confidence: 99%

Extractive and Auto‐Extractive Distillation of Azeotropic Mixtures

Фролкова

Gaganov

2021

Chem Eng & Technol

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Extractive distillation is one of the energy-efficient methods for separating azeotropic mixtures. The question of the influence of the mixture original composition on the operating parameters of the columns of extractive and auto-extractive distillation remains open. The extractive distillation of an acetone+methanol mixture and auto-extractive distillation of an acetone+methanol+water (dimethylsulfoxide) mixture was simulated using AspenPlus. The impact of the solvent and acetone content in the original mixture on the operating parameters of the columns was investigated for the first time. It is demonstrated that the presence of an entrainer in the original mixture reduces the amount of solvent needed to separate the mixture, the reflux ratio, and the total energy consumption of the process.

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Economic evaluation of energy saving alternatives in extractive distillation process

Cited by 38 publications

References 32 publications

Review of extractive distillation. Process design, operation, optimization and control

Review of extractive distillation. Process design, operation, optimization and control

Development and optimization of a novel process of double‐effect distillation with vapor recompression for bioethanol recovery and vapor permeation for bioethanol dehydration

Extractive and Auto‐Extractive Distillation of Azeotropic Mixtures

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