4.7 Article

Process design and 4E analysis of different distillations of ethyl acetate/ethanol/cyclohexane separation based on extractive and pressure-swing properties

Related references

Note: Only part of the references are listed.
Article Engineering, Chemical

New single-column extractive distillation with heavy entrainer to separate binary azeotropic mixtures

Haoran Yan et al.

Summary: A new flash tank-assisted single-column extractive distillation with heavy entrainer (FT-SCED) is proposed in this paper, which can achieve high-purity light and heavy products from the overheads of column and flash tank, respectively. Two case studies show that the proposed process has lower annual total cost compared with conventional extractive distillation and extractive dividing wall column.

SEPARATION AND PURIFICATION TECHNOLOGY (2023)

Article Engineering, Chemical

Multi-objective optimization of the intensified extractive distillation with side-reboiler for the recovery of ethyl acetate and methanol from wastewater

Ao Yang et al.

Summary: This study investigates the recovery of ethyl acetate (EtAC) and methanol (MeOH) from wastewater using three different extractive distillation processes: triple-column ED (TCED), four-column ED (FCED), and energy-intensified TCED with side-reboiler (TCED-SR). The processes are conceptually designed and optimized using multi-objective particle swarm optimization with total annual cost (TAC), CO2 emission, and process route index (PRI) as objectives. TCED-SR provides the best economic and environmental performances, with the lowest TAC and CO2 emission. FCED is recommended in places with strict safety regulations, although it has higher TAC and CO2 emission compared to TCED-SR.

SEPARATION AND PURIFICATION TECHNOLOGY (2023)

Article Engineering, Chemical

Improving the economy and energy efficiency of separating n-propanol/water/tetrahydrofuran via triple-column pressure-swing distillation and azeotropic combining pressure-swing distillation

Azhi Yu et al.

Summary: The triple-column pressure-swing distillation (TPSD) and novel azeotropic combining pressure-swing distillation (APSD) processes were designed for separating the n-propanol/water/tetrahydrofuran ternary mixture. Heat-integration and vapor-recompressed heat pump technologies were explored to achieve energy conservation. The economic and energy performance of the processes were evaluated using total annual cost (TAC), total energy consumption (TEC), gas emission, and exergy analysis. APSD exhibited better economic performance compared to TPSD, with a reduction of 54.32% in TAC and 67.19% in TEC. The ADLH-VR-HI process showed the highest energy and economic performance, with a total exergy efficiency of 6.02%, indicating that heat-integration and vapor-recompressed heat pump technologies are suitable for energy savings and improved efficiency.

SEPARATION AND PURIFICATION TECHNOLOGY (2023)

Article Engineering, Chemical

Design and control of extraction combined with extractive distillation for separation isopropanol-butanol-ethanol-water with organic Rankine cycle

Jie Kong et al.

Summary: The separation process of IBE mixture was studied systematically in this paper. The operating parameters of E-ED were optimized using a multi-objective genetic algorithm, and the energy usage of the optimized process was analyzed using the pinch point technique. A new configuration combining E-ED-HI and ORC was proposed to further reduce the total cost.

SEPARATION AND PURIFICATION TECHNOLOGY (2023)

Article Energy & Fuels

Simulation, optimization and control of the process of synthesis of ethyl propionate by reactive distillation

Peng Du et al.

Summary: This paper proposes a continuous production process of ethyl propionate and an energy-saving heat pump reactive distillation process. The optimization results show that the heat pump reactive distillation process is more economical and environmentally friendly compared to the conventional process, and it also has advantages in automatic control.

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION (2022)

Article Energy & Fuels

Heat integration and dynamic control for separating the ternary azeotrope of butanone/isopropanol/n-heptane via pressure-swing distillation

Fangkun Zhang et al.

Summary: This study investigated an economical and robust triple column pressure-swing distillation (TCPSD) process for separating the butanone/isopropanol/n-heptane ternary azeotrope. By optimizing the process for minimum total annual cost (TAC) and investigating heat integration, it was shown that TCPSD is feasible for separating the ternary mixture. Heat integration can significantly reduce TAC, with the fully integrated scheme showing the best economic and anti-disturbance performance.

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION (2022)

Article Engineering, Chemical

Effect of operating pressure on design of extractive distillation process separating DMC-MeOH azeotropic mixture

H. Selin Varyemez et al.

Summary: This study investigates the effect of operating pressure on the separation of dimethyl carbonate-methanol mixture, showing that increasing the operating pressure significantly reduces the required entrainer flowrate, leading to lower total cost and carbon dioxide emissions.

CHEMICAL ENGINEERING RESEARCH & DESIGN (2022)

Article Engineering, Chemical

Pressure-swing distillation process for separating ternary azeotropic mixture of acidic aqueous solution

B. Mahida et al.

Summary: The separation of ternary mixtures of acidic aqueous solution is challenging due to the presence of binary and ternary azeotropes, however, a pressure-swing distillation process can achieve higher purity product separation. Different operating pressures were chosen for each distillation column to achieve separation, and it was found that the energy consumed to separate water was higher than that required to recover formic acid.

CHEMICAL ENGINEERING COMMUNICATIONS (2022)

Article Engineering, Environmental

Design and control of side-stream extractive distillation to separate acetic acid and from wastewater

Jiyan Liu et al.

Summary: This paper analyzes the feasibility of recycling acetic acid and cyclohexanone from wastewater and proposes a method to prevent remixing effect in extractive distillation. The results show that the single liquid side-stream extractive distillation configuration is the optimal choice and the model predictive control structure performs the best in control effectiveness.

PROCESS SAFETY AND ENVIRONMENTAL PROTECTION (2022)

Article Engineering, Chemical

Intensification and analysis of extractive distillation processes with preconcentration for separating ethyl acetate, isopropanol and water azeotropic mixtures

Xue Jian et al.

Summary: Ethyl acetate and isopropanol are efficiently separated from a dilute solution during the production of ampicillin sodium through extractive distillation processes and intensified processes with heat integration and heat pump. These processes have shown significant energy and cost saving effects.

SEPARATION AND PURIFICATION TECHNOLOGY (2022)

Article Engineering, Chemical

Comparative optimal design and effective control of different pressure extractive distillation for separating acetone-Methanol

Jiyan Liu et al.

Summary: This paper proposes a novel different pressure extractive distillation strategy for separating acetone and methanol. By optimizing design parameters and changing feed thermal condition, the proposed process reduces the total annual cost and CO2 emissions, and has better economic and environmental performance compared to existing processes.

SEPARATION AND PURIFICATION TECHNOLOGY (2022)

Article Engineering, Environmental

Evaluation on the separation effect and extractant recovery efficiency of extractive distillation for separating ethyl acetate/methanol with ionic liquids as extractants

Lingqiang Yan et al.

Summary: This study proposes distillation schemes using different ionic liquids as extractants to separate ethyl acetate and methanol, with a focus on the effectiveness of extractant recovery on overall benefits. Through simulation analysis, the relationship between separation effects and decomposition temperature of different ionic liquids is determined, and several recovery configurations are explored.

PROCESS SAFETY AND ENVIRONMENTAL PROTECTION (2022)

Article Engineering, Chemical

Separation of used automobile oil/water mixture by Nylon 6/ZnO nanoparticles electrospun membrane

Thi Xuan Quynh Nguyen et al.

Summary: In this study, Nylon 6 (N6) membranes blended with ZnO nanoparticles were fabricated by the electrospinning technique, which showed excellent performance in separating water from oily wastewater. The membranes exhibited high flux, fouling resistance, and removal efficiency for different pollutants. This research provides a feasible approach for treating oil-containing wastewater.

SEPARATION AND PURIFICATION TECHNOLOGY (2022)

Article Engineering, Chemical

Process improvement for three-column extractive distillation by feed split

Cong Duan et al.

Summary: This article introduces a three-column extractive distillation process for separating azeotropic components at a dilute feed condition, and proposes an innovative method of feed splitting to save energy. The results show that most three-column extractive distillation processes can save energy by feed split and can be used in conjunction with other energy-saving methods.

SEPARATION AND PURIFICATION TECHNOLOGY (2022)

Article Engineering, Chemical

Conceptual design of sustainable extractive distillation processes combining preconcentration and extractive distillation functions for separating ternary multi-azeotropic mixture

Chao Wang et al.

Summary: In this study, an efficient three-column extractive distillation process (TCED-IDC) was designed for separating ternary multi-azeotropic mixtures with a large content of one component. The energy and economic advantages of the TCED-IDC processes were demonstrated through two case studies.

CHEMICAL ENGINEERING SCIENCE (2022)

Article Engineering, Chemical

Energy-efficient extractive distillation combined with heat-integrated and intermediate reboilers for separating acetonitrile/isopropanol/water mixture

Yudong Li et al.

Summary: The research on conventional triple-column extractive distillation using ethylene glycol as entrainer for the separation of acetonitrile/isopropanol/water mixture showed that the heat-integrated schemes with intermediate reboilers had better performance in terms of energy saving, exergy efficiency, economic benefits, and environmental impact compared to the conventional extractive distillation process. This study highlights the potential for energy-efficient, cost-effective, and environmentally friendly separation techniques in chemical processes.

SEPARATION AND PURIFICATION TECHNOLOGY (2021)

Article Thermodynamics

Multi-objective optimization and control strategy for extractive distillation with dividing-wall column/pervaporation for separation of ternary azeotropes based on mechanism analysis

Hongru Zhang et al.

Summary: This study investigates the separation mechanism of chemicals using thermodynamics and molecular dynamics theory, and reduces energy consumption by utilizing extractive dividing-wall column and pervaporation technologies. The optimized processes show improved performance in terms of TAC and CO2 emissions compared to the basic processes.

ENERGY (2021)

Article Computer Science, Interdisciplinary Applications

Stakeholder-oriented multi-objective process optimization based on an improved genetic algorithm

Yang Su et al.

COMPUTERS & CHEMICAL ENGINEERING (2020)

Article Engineering, Chemical

Heat integrated technology assisted pressure-swing distillation for the mixture of ethylene glycol and 1,2-butanediol

Weixin Mao et al.

SEPARATION AND PURIFICATION TECHNOLOGY (2020)

Review Engineering, Chemical

A review of extractive distillation from an azeotropic phenomenon for dynamic control

Yixin Ma et al.

CHINESE JOURNAL OF CHEMICAL ENGINEERING (2019)

Article Green & Sustainable Science & Technology

Design optimization and operating pressure effects in the separation of acetonitrile/methanol/water mixture by ternary extractive distillation

Yinglong Wang et al.

JOURNAL OF CLEANER PRODUCTION (2019)

Article Engineering, Chemical

Heat-integrated pressure-swing distillation process for separating the minimum-boiling azeotrope ethyl-acetate and ethanol

Qingjun Zhang et al.

SEPARATION AND PURIFICATION TECHNOLOGY (2017)

Review Engineering, Chemical

Insight into pressure-swing distillation from azeotropic phenomenon to dynamic control

Shisheng Liang et al.

CHEMICAL ENGINEERING RESEARCH & DESIGN (2017)

Article Computer Science, Interdisciplinary Applications

Separating an azeotropic mixture of toluene and ethanol via heat integration pressure swing distillation

Zhaoyou Zhu et al.

COMPUTERS & CHEMICAL ENGINEERING (2015)

Article Engineering, Electrical & Electronic

Optimal Design of Powder-Aligning and Magnetizing Fixtures for an Anisotropic-Bonded NdFeB Permanent Magnet

Dianhai Zhang et al.

IEEE TRANSACTIONS ON MAGNETICS (2014)