Techno-economic comparison of energy usage between azeotropic distillation and hybrid system for water–ethanol separation

Kunnakorn, Dacho; Rirksomboon, Thirasak; Siemanond, Kitipat; Aungkavattana, Pavadee; Kuanchertchoo, Neeranut; Chuntanalerg, Panupong; Hemra, Khanthima; Kulprathipanja, Santi; James, Rodney; Wongkasemjit, Sujitra

doi:10.1016/j.renene.2012.09.055

Cited by 66 publications

(31 citation statements)

References 15 publications

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“…Three azeotropic and extractive distillation configurations were selected from the works reported in the literature [7,16,9,2]. For the two dehydrating distillation processes, the selected configurations were the conventional column and two other integrated configurations which perform relatively very well in term of product purity, throughputs and energy consumption.…”

Section: Methodsmentioning

confidence: 99%

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Exergetic and Economic Assessment of Distillation Hybrid Configurations for Bioethanol Refining

Suleiman¹,

Olawale²,

Waziri³

2014

Int. J. Thermo

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Thermo-economics analysis was used to identify the most economic distillation hybrid configuration to dehydrate bioethanol mash (12 wt%) to fuel grade (99.5 wt%) based on economic objective of minimization of operating cost in this work. Three different hybrids of THIDC with azeotropic and, extractive distillation units were assessed using similar feed and product specifications of 1200 kmol/h (12 wt% ethanol) and 55 kmol/h (99.5 wt% ethanol) respectively . The six hybrid configurations were simulated using Aspen Plus ®. The hybrid of THIDC with conventional extractive distillation (THEX1) was shown to have the lowest irreversibility rate (lost work) and highest exergetic efficiency followed by the hybrid containing thermally extractive sequence (THEX3). The latter also has the lowest energy consumption. However, economic evaluation showed that thermally coupled extractive distillation hybrid (with THIDC) is the most attractive hybrid configuration dehydrating bioethanol to fuel grade at commercial scale with the highest return on investment (ROI) and the least annual product cost. This indicates its economic attractiveness when compared with the other hybrids considered in this work. The trade-off existing between economic and exergy efficiency favors the selection of THEX3 as the preferred choice for bioethanol refining among all the six hybrids investigated.

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Section: Methodsmentioning

confidence: 99%

“…Among such is the techno-economic comparison of energy usage between hybrids of azeotropic distillation and pervaporation with conventional distillation column [16]. It was found that the hybrid incorporating pervaporation consumes 52.4 % less energy than that containing azeotropic distillation.…”

Section: Introductionmentioning

confidence: 99%

Exergetic and Economic Assessment of Distillation Hybrid Configurations for Bioethanol Refining

Suleiman¹,

Olawale²,

Waziri³

2014

Int. J. Thermo

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“…The binary mixture of methanol and benzene formed during transesterification was distilled, whereas all unreacted DMC was retained in the reactor [74]. However, azeotropic distillation are usually energy intensive, and benzene is carcinogenic and thus is not ecofriendly [86].…”

Section: Effects Of Glycerol/dmc Molar Ratiomentioning

confidence: 99%

Review on recent progress in catalytic carboxylation and acetylation of glycerol as a byproduct of biodiesel production

Okoye

Hameed

2016

Renewable and Sustainable Energy Reviews

200

117

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“…The results showed that MAVS system had the ability to save more than 50% of the energy consumed during the conventional distillation. In another work, Kunnakorn et al [93] conducted a techno-economic comparison between hybrid system (distillation followed by pervaporation process) and azeotropic distillation which showed that the hybrid system was more efficient in term of purification ability with 99.4 wt% of ethanol recovered and it was low energy consuming with 52.4% less energy compared to the azeotropic distillation.…”

Section: Conclusion and Future Trendsmentioning

confidence: 99%

Overview of Alternative Ethanol Removal Techniques for Enhancing Bioethanol Recovery from Fermentation Broth

et al. 2019

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This study aims at reviewing the alternative techniques for bioethanol recovery, highlighting its advantages and disadvantages, and to investigate the technical challenges facing these alternatives to be widely used. The findings showed that the integration of these techniques with the fermentation process did not meet a large acceptance in the industrial sector. The majority of conducted studies were mainly focusing on ethanol recovery from aqueous standard solution rather than the investigation of these techniques performance in fermentation-separation coupled system. In this context, pervaporation has received more attention as a promising alternative to distillation. However, some challenges are facing the integration of these techniques in the industrial scale as the fouling problem in pervaporation, the toxicity of solvent in liquid extraction, energy consumption in vacuum fermentation. It was also found that there is a lack of the technical economic analysis for these techniques which may limit the spread of its application in the large scale. Currently, hybrid systems integrating distillation with other alternative techniques are considered as an innovative solution to reduce the high cost of the distillation process and the low separation efficiency of the alternatives techniques.

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Techno-economic comparison of energy usage between azeotropic distillation and hybrid system for water–ethanol separation

Cited by 66 publications

References 15 publications

Exergetic and Economic Assessment of Distillation Hybrid Configurations for Bioethanol Refining

Exergetic and Economic Assessment of Distillation Hybrid Configurations for Bioethanol Refining

Review on recent progress in catalytic carboxylation and acetylation of glycerol as a byproduct of biodiesel production

Overview of Alternative Ethanol Removal Techniques for Enhancing Bioethanol Recovery from Fermentation Broth

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