Article
Engineering, Chemical
Lechoslaw J. Krolikowski
Summary: This paper presents an approach for determining feasible separation regions for S-shaped distillation lines, constructed using a geometric model of the column and considering the shape of the distillation lines. The feasible separation region includes additional product composition areas, enabling the design of distillation columns with fewer theoretical stages and lower reflux ratio.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2021)
Article
Green & Sustainable Science & Technology
Hongru Zhang, Qing Zhao, Mengjin Zhou, Peizhe Cui, Yinglong Wang, Shiqing Zheng, Zhaoyou Zhu, Jun Gao
Summary: The separation performance and economic cost of single extractive distillation and an extractive distillation coupled pervaporation process for ternary azeotropic systems with different feed compositions were studied. It was found that the cost of the processes increases significantly with increasing water content in the feed composition.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Computer Science, Interdisciplinary Applications
Tan Akinciturk, Devrim B. Kaymak
Summary: In this study, two alternative triple-column pressure swing distillation (PSD) configurations were proposed for a ternary mixture, and the total annual cost was analyzed based on ternary maps at different pressures. The results showed that the methanol-acetone-hexane (M-A-H) separation sequence with a column configuration operating at 0.5, 1, and 5 bar had better economic performance, and the fully heat-integrated M-A-H configuration further saved costs.
COMPUTERS & CHEMICAL ENGINEERING
(2022)
Article
Environmental Sciences
Asma Iqbal, Muhammad Abdul Qyyum, Ojasvi, Syed Akhlaq Ahmad, Su Shiung Lam
Summary: This article discusses the separation techniques for THF-water binary solution and evaluates the performance of two different entrainers. Using n-octane as the entrainer reduces energy requirements, while using n-hexane results in higher initial cost.
Article
Engineering, Chemical
Meng-Lin Tsai, I-Lung Chien
Summary: A new design principle for the separation of benzene/isopmpanol/water ternary mixture was proposed using a triple-column side-stream extractive distillation system, which achieved significant cost savings through energy-efficient operation. Simulation results confirmed the effectiveness of the proposed heat-integrated design and overall control strategy in maintaining high purity of the products without the need for an online composition analyzer.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Chemical
Yudong Li, Tianyi Sun, Qing Ye, Jinlong Li, Yinggui Xu, Xue Jian
Summary: A sustainable reactive coupling pressure-swing distillation process was investigated to separate a ternary mixture, with the application of heat pump technologies showing potential for energy saving and improved economic performance.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Engineering, Chemical
Sabla Y. Alnouri
Summary: This work introduces a graphical technique to design staged desalination systems using composite curves, contrasting it with the design approach of material recycle networks. Factors affecting the design and performance of desalination systems must be carefully considered, and the point at which adding an extra stage no longer enhances system performance can be easily identified using graphical tools.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Thermodynamics
Xinyu Li, Dalin Zhang, Shichang Yun, Xingguang Zhou, Dianqiang Jiang, Xindi Lv, Zhenyu Feng, Wenqiang Wu, Wenxi Tian, Suizheng Qiu, G. H. Su, Quanbin Zhao, Xiuting Liu
Summary: This study focuses on the advantages of Fluoride-Salt-cooled high-Temperature Advanced Reactor and considers the closed Brayton cycle system as the energy conversion system. Thermodynamic analysis, conjugate gradient optimization, and exergy analysis were utilized. A pinch point constraint method based on simultaneous equations was proposed to improve calculation efficiency and ensure comparison standards. Results showed that the SF6 cycle has the highest efficiency for near-critical fluids, reaching 46.6%. For far-critical fluids, air and N2 had thermal efficiencies of 45.6% and 45.5%, respectively. Exergy analysis indicated that the CO2 cycle has the highest potential for improving thermal efficiency, with an increase from 43.48% to 49.31% through the recompression process. The findings of this study can serve as references for the design and optimization of Brayton power cycle systems.
APPLIED THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
Ibrahim H. Alhajri, Mamdouh A. Gadalla, Hany A. Elazab
Summary: Energy integration in petrochemical and refining industries through exchanger networks and the use of Pinch Analysis technique can optimize heat recovery, while a graphical methodology with an energy-area parameter can help design exchanger networks efficiently.
Article
Green & Sustainable Science & Technology
Jen-Hao Teng, Han-Cheng Wu, Zhen-Hao Wu, Wei-Hao Huang
Summary: This paper proposes an efficient Partial Shading Detection (PSD) method for Photovoltaic Power Generation Systems (PVGS), which can accurately detect the occurrence of partial shading by estimating solar irradiance and temperature using the proposed PSD factor. With the appropriate MPPTs chosen under partial shading conditions, the tracking efficiency of the maximum power point can be improved, leading to increased power generation efficiency.
IEEE TRANSACTIONS ON SUSTAINABLE ENERGY
(2023)
Article
Engineering, Chemical
Israel F. Martinez-Galmiche, Nelly Ramirez-Corona, Carolina Conde-Mejia, Kelvyn B. Sanchez-Sanchez, Rafiqul Gani, Arturo Jimenez-Gutierrez
Summary: This study presents designs of extractive distillation systems for ethanol-water separation using ionic liquids as entrainers. The most energy-efficient design consists of an extractive column, a desorption column, and a membrane unit for ionic liquid recovery.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2022)
Article
Mathematics, Applied
Ramandeep Behl, Sonia Bhalla, A. A. Magrenan, Sanjeev Kumar
Summary: This study proposes a new general scheme with high convergence order for approximating the solutions of nonlinear systems and verifies its applicability and validity through convergence error, computational efficiency, and numerical experiments. The proposed scheme is an extension of a previous study by Parhi and Gupta, and it requires multiple matrices and vectors per iteration. Additionally, the study discusses the existence of strange fixed points and conjugacy functions in a specific case of the scheme, and demonstrates the dynamical behavior of this case through the basins of attractions.
JOURNAL OF COMPUTATIONAL AND APPLIED MATHEMATICS
(2022)
Article
Engineering, Chemical
Shunjin Yang, Qingjun Zhang, Youguang Ma, Xigang Yuan, Aiwu Zeng
Summary: A novel eco-efficient intensified vapor recompression-assisted arrangement has been developed for side stream pressure-swing distillation, with ethyl acetate and ethanol separation as an example. The new configuration shows significant improvements in energy consumption, CO2 emissions, cost, and thermodynamic efficiency compared to traditional self-heat recuperative arrangements.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Matthew Deakin, Ilias Sarantakos, David M. Greenwood, Janusz Bialek, Phil C. Taylor, Wenlong Ming, Charalampos Patsios
Summary: This paper introduces a new device called the Hybrid Open Point (HOP), which consists of an electromechanical switch and a power converter connected in parallel to increase network capacity in interconnected distribution systems. The two types of HOP are studied considering fault level and radiality constraints. The experimental results show that HOP can provide secure network capacity more cost-effectively.
IEEE TRANSACTIONS ON POWER DELIVERY
(2022)
Article
Computer Science, Theory & Methods
Lili Gao, Fangyu Zheng, Rong Wei, Jiankuo Dong, Niall Emmart, Yuan Ma, Jingqiang Lin, Charles Weems
Summary: The paper introduces a general framework called DPF-ECC to accelerate ECC schemes over prime field using double precision floating-point computing power, which minimizes overhead and achieves outstanding performance. It can be a competitive candidate for ECC implementation on various general-purpose platforms.
IEEE TRANSACTIONS ON INFORMATION FORENSICS AND SECURITY
(2021)