A novel self-heat recuperative dividing wall column to maximize energy efficiency and column throughput in retrofitting and debottlenecking of a side stream column

Long, Nguyen Van Duc; Minh, Lê Quang; Nhien, Le Cao; Lee, Moonyong

doi:10.1016/j.apenergy.2015.08.061

Cited by 45 publications

(19 citation statements)

References 29 publications

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“…In an economic evaluation, the total investment cost (TIC), total annual operating cost (TOC), and TAC of all the processes were calculated based on the Turton textbook [26] as described in detail in our previous work [27]. The Chemical Engineering Index of 556.8 in 2015 was considered in this work.…”

Section: Resultsmentioning

confidence: 99%

Techno-economic assessment of hybrid extraction and distillation processes for furfural production from lignocellulosic biomass

Nhien

Long

Kim

et al. 2017

Biotechnol Biofuels

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BackgroundLignocellulosic biomass is one of the most promising alternatives for replacing mineral resources to overcome global warming, which has become the most important environmental issue in recent years. Furfural was listed by the National Renewable Energy Laboratory as one of the top 30 potential chemicals arising from biomass. However, the current production of furfural is energy intensive and uses inefficient technology. Thus, a hybrid purification process that combines extraction and distillation to produce furfural from lignocellulosic biomass was considered and investigated in detail to improve the process efficiency. This effective hybrid process depends on the extracting solvent, which was selected based on a comprehensive procedure that ranged from solvent screening to complete process design.ResultsVarious solvents were first evaluated in terms of their extraction ability. Then, the most promising solvents were selected to study the separation feasibility. Eventually, processes that used the three best solvents (toluene, benzene, and butyl chloride) were designed and optimized in detail using Aspen Plus. Sustainability analysis was performed to evaluate these processes in terms of their energy requirements, total annual costs (TAC), and carbon dioxide (CO2) emissions. The results showed that butyl chloride was the most suitable solvent for the hybrid furfural process because it could save 44.7% of the TAC while reducing the CO2 emissions by 45.5% compared to the toluene process. In comparison with the traditional purification process using distillation, this suggested hybrid extraction/distillation process can save up to 19.2% of the TAC and reduce 58.3% total annual CO2 emissions. Furthermore, a sensitivity analysis of the feed composition and its effect on the performance of the proposed hybrid system was conducted.ConclusionsButyl chloride was found to be the most suitable solvent for the hybrid extraction/distillation process of furfural production. The proposed hybrid sequence was more favorable than the traditional distillation process when the methanol fraction of the feed stream was <3% and more benefit could be obtained when that fraction decreased.

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Section: Resultsmentioning

confidence: 99%

Techno-economic assessment of hybrid extraction and distillation processes for furfural production from lignocellulosic biomass

Nhien

Long

Kim

et al. 2017

Biotechnol Biofuels

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“…In fact, C1 and C2 (Figure 1) consumed 71.1% of the total energy required for the PGMEA process [7]. Among various methods that have been developed for improving distillation column performance, PI and heat integration (HI) are considered as proven methods in academia and the industrial sector [8][9][10][11][12]. Interestingly, PI has been extensively used to improve the energy efficiency and cost reduction of chemical and distillation processes [2,4,[13][14][15][16][17] and can achieve a sustainable chemical process of the reactive-pressure swing with inherent Among various methods that have been developed for improving distillation column performance, PI and heat integration (HI) are considered as proven methods in academia and the industrial sector [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…Among various methods that have been developed for improving distillation column performance, PI and heat integration (HI) are considered as proven methods in academia and the industrial sector [8][9][10][11][12]. Interestingly, PI has been extensively used to improve the energy efficiency and cost reduction of chemical and distillation processes [2,4,[13][14][15][16][17] and can achieve a sustainable chemical process of the reactive-pressure swing with inherent Among various methods that have been developed for improving distillation column performance, PI and heat integration (HI) are considered as proven methods in academia and the industrial sector [8][9][10][11][12]. Interestingly, PI has been extensively used to improve the energy efficiency and cost reduction of chemical and distillation processes [2,4,[13][14][15][16][17] and can achieve a sustainable chemical process of the reactive-pressure swing with inherent advantages of safety, environment, and economics [18].…”

Section: Introductionmentioning

confidence: 99%

Pressure Swing-Based Reactive Distillation and Dividing Wall Column for Improving Manufacture of Propylene Glycol Monomethyl Ether Acetate

et al. 2021

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Propylene glycol monomethyl ether acetate (PGMEA) is a commonly used solvent in the rapidly developing semiconductor industry. Ultra-high purity PGMEA is required for this ultra-precision industry and to satisfy the current strict waste management regulations. The traditional PGMEA production process consumes considerable energy and has a high production cost. In this study, a novel heat integrated and intensified design, which applies a dividing wall column, reactive distillation, and pressure swing techniques, was proposed for improving the energy efficiency and reducing the cost of PGMEA production. Heat integration was applied to maximize the heat recovery of the process. All processes were simulated using the commercial simulator Aspen Plus V11. The economic and environmental parameters of the process alternative were assessed for a fair comparison with the conventional process. The results showed that heat integration of the optimal pressure swing-based reactive distillation and dividing wall column processes could reduce the energy requirement and TAC by 29.5%, and 20.8%, respectively, compared to that of the optimal conventional process. The improved design provides a strong basis for achieving more sustainable PGMEA production.

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“…One of the most attractive solutions is using cleaner electricity generated from sustainable energy sources, such as wind power and solar cells. Heat pump (HP) technology, which allows for the use of the waste heat released at the condenser for supplying energy to the reboiler, is a cost-effective approach to reducing the energy requirement of the distillation column [8][9][10][11]. This technology can be beneficial in the case of the small temperature difference between the overhead and bottom of the column and the high heat load.…”

Section: Introductionmentioning

confidence: 99%

Enhancement of a R-410A Reclamation Process Using Various Heat-Pump-Assisted Distillation Configurations

et al. 2019

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Distillation for R-410A reclamation from a waste refrigerant is an energy-intensive process. Thus, various heat pump configurations were proposed to enhance the energy efficiency of existing conventional distillation columns for separating R-410A and R-22. One new heat pump configuration combining a vapor compression (VC) heat pump with cold water and hot water cycles was suggested for easy operation and control. Both advantages and disadvantages of each heat pump configuration were also evaluated. The results showed that the mechanical vapor recompression heat pump with top vapor superheating saved up to 29.5%, 100.0%, and 10.5% of the energy required in the condenser duty, reboiler duty, and operating cost, respectively, compared to a classical heat pump system, and 85.2%, 100.0%, and 60.8%, respectively, compared to the existing conventional column. In addition, this work demonstrated that the operating pressure of a VC heat pump could be lower than that of the existing distillation column, allowing for an increase in capacity of up to 20%. In addition, replacing the throttle valve with a hydraulic turbine showed isentropic expansion can decrease the operating cost by up to 20.9% as compared to the new heat pump configuration without a hydraulic turbine. Furthermore, the reduction in carbon dioxide emission was investigated to assess the environmental impact of all proposed sequences.

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A novel self-heat recuperative dividing wall column to maximize energy efficiency and column throughput in retrofitting and debottlenecking of a side stream column

Cited by 45 publications

References 29 publications

Techno-economic assessment of hybrid extraction and distillation processes for furfural production from lignocellulosic biomass

Techno-economic assessment of hybrid extraction and distillation processes for furfural production from lignocellulosic biomass

Pressure Swing-Based Reactive Distillation and Dividing Wall Column for Improving Manufacture of Propylene Glycol Monomethyl Ether Acetate

Enhancement of a R-410A Reclamation Process Using Various Heat-Pump-Assisted Distillation Configurations

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