Control of the azeotropic distillation process for separation of acetonitrile and water with and without heat integration

Shan, Baoming; Niu, Chengqun; Meng, Dapeng; Zhao, Qing; Ma, Yixin; Wang, Yinglong; Zhang, Fangkun; Zhu, Zhaoyou

doi:10.1016/j.cep.2021.108451

Cited by 16 publications

(8 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The PV module was used as a condenser to cool the steam generated from the top of the column by utilizing the heat-absorbing characteristic in the PV process, which effectively reduced the energy consumption of the column condenser. Similar thermal integration research and further advanced exergy and energy efficiency analysis can refer to in the literature [72][73][74][75][76][77][78][79].…”

Section: (2a))mentioning

confidence: 99%

Process intensification by integration of distillation and vapor permeation or pervaporation - An academic and industrial perspective

Liu

Kruber

et al. 2022

Results in Engineering

View full text Add to dashboard Cite

Section: (2a))mentioning

confidence: 99%

Process intensification by integration of distillation and vapor permeation or pervaporation - An academic and industrial perspective

Liu

Kruber

et al. 2022

Results in Engineering

View full text Add to dashboard Cite

“…Recovery of valuable products from waste liquids by separation and purification is a crucial way to achieve green and sustainable development. 1,2 High-efficiency separation technology of multiple azeotropic systems has received extensive research and attention by special distillation, including pressure-swing distillation (PSD), [3][4][5] extractive distillation, [6][7][8] azeotropic distillation [9][10][11] and reactive distillation. [12][13][14] Compared with other separation methods, PSD separation of azeotropes has the advantages of no need to add other impurities, and being an energy-saving, simple process, especially for material systems where the composition of azeotrope mixture changes with the change of pressure.…”

Section: Introductionmentioning

confidence: 99%

Economic optimization and dynamic control of pressure‐swing distillation for separating the ternary azeotrope of butanone/n‐heptane/isopropanol

Sun

Zhang

et al. 2022

J of Chemical Tech & Biotech

Self Cite

View full text Add to dashboard Cite

BACKGROUND Economic optimization and dynamic control of the separation process for recovering the ternary mixture of butanone (MEK)/n‐heptane/isopropanol (IPA) from industrial wastewater is a significant topic. In this work, the optimal pressure‐swing distillation (PSD) sequence, heat integration and dynamic control for separating MEK/n‐heptane/IPA were investigated systematically. The optimal separation sequence was determined by combining the minimum total annual cost (TAC) with the residual curves map (RCM). Pressure‐swing distillation with non‐heat integration, partial heat integration or full heat integration was compared in terms of TAC. Dynamic control schemes were designed for optimal processes of two separation sequences with and without heat integration. RESULTS The results demonstrate that the TAC of optimal PSD with non‐heat integration process can be reduced by 31.11%, whereas the TAC of optimal partial heat integration and full heat integration schemes can be reduced by 39.73% and 40.96%, respectively. The dynamic performance of all control schemes that can resist ±20% feed flow disturbances and composition disturbances are compared with the integral of squared error. CONCLUSION It is demonstrated that PSD with full integration process (FHIPSD) for separating MEK/n‐heptane/IPA has optimal economic performance, whereas PSD with non‐heat integration process (NTIPSD) has the optimal dynamic performance and robust stability. This work provides a significant reference for industrial separation of MEK/n‐heptane/IPA. © 2022 Society of Chemical Industry (SCI).

show abstract

Section: Introductionmentioning

confidence: 99%

“…3,4 Azeotropic distillation, 5,6 extractive distillation, 7,8 and pressure-swing distillation 9 are all effective methods for separating azeotropic mixtures, and lots of energy-saving technologies are proposed to improve these processes. 10,11 The introduction of process intensification and integration technology in distillation can effectively reduce the energy consumption and improve the energy efficiency, such as heatintegrated distillation, 12,13 dividing-wall column distillation, 14,15 and cyclic distillation. 16 In recent years, the selfheat recuperation technology for low-temperature heat source recovery has received wide attention, 17,18 which can be used for the distillation process to further reduce the energy consumption.…”

Section: Introductionmentioning

confidence: 99%

“…The mass fraction of ethanol obtained from the ordinary distillation section can reach 92.4– 94 wt %. At this time, ethanol and water will form azeotrope, which is difficult to be further purified by ordinary distillation, and thus other dehydration methods need to be used. , Azeotropic distillation, , extractive distillation, , and pressure-swing distillation are all effective methods for separating azeotropic mixtures, and lots of energy-saving technologies are proposed to improve these processes. , …”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Multi-objective Optimization and Control of Self-Heat Recuperative Azeoropic Distillation for Separating an Ethanol/Water Mixture

Yu²,

Zhu

2022

ACS Omega

View full text Add to dashboard Cite

Azeotropic distillation is an important method for the separation of an ethanol/water mixture, while the main disadvantage of azeotropic distillation is its high energy consumption. Since the self-heat recuperation technology can effectively recover and utilize the heat of effluent stream in thermal processes, it is introduced into the ethanol dehydration process. The conventional azeotropic distillation and self-heat recuperative azeotropic distillation (SHRAD) are simulated and optimized with multiple objectives. There exists a design point in the Pareto solution set for which the total annual cost is the lowest, the thermodynamic efficiency is the highest, and the CO 2 emission is the least. Based on the specified design, the dynamic characteristics of the SHRAD configuration are studied, and two control structures are proposed. The improved control structure of the SHRAD process works well under the feed flowrate and composition disturbance, and the SHRAD system can obtain a high-purity ethanol product. The results show that the SHRAD process has significant advantages over conventional azeotropic distillation in terms of economic and environmental benefits. In addition, an effective control structure can ensure the stable operation of the SHRAD process.

show abstract

Control of the azeotropic distillation process for separation of acetonitrile and water with and without heat integration

Cited by 16 publications

References 27 publications

Process intensification by integration of distillation and vapor permeation or pervaporation - An academic and industrial perspective

Process intensification by integration of distillation and vapor permeation or pervaporation - An academic and industrial perspective

Economic optimization and dynamic control of pressure‐swing distillation for separating the ternary azeotrope of butanone/n‐heptane/isopropanol

Multi-objective Optimization and Control of Self-Heat Recuperative Azeoropic Distillation for Separating an Ethanol/Water Mixture

Contact Info

Product

Resources

About