Korean Journal of Chemical Engineering最新文献_第9页

SOHIO Process Legacy Waste Treatment: Antimony(V) Removal from Sulfate Media Using Organic Polymeric Ion Exchange Resins SOHIO工艺遗留废物处理：使用有机聚合离子交换树脂从硫酸盐介质中去除锑

IF 3.4 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2026-04-25 DOI: 10.1007/s11814-026-00720-4

Richard I. Foster, James T. M. Amphlett, Kwang-Wook Kim, Clint A. Sharrad, Keunyoung Lee

{"title":"SOHIO Process Legacy Waste Treatment: Antimony(V) Removal from Sulfate Media Using Organic Polymeric Ion Exchange Resins","authors":"Richard I. Foster, James T. M. Amphlett, Kwang-Wook Kim, Clint A. Sharrad, Keunyoung Lee","doi":"10.1007/s11814-026-00720-4","DOIUrl":"10.1007/s11814-026-00720-4","url":null,"abstract":"<div>\u0000 \u0000 <p>The feasibility of employing an ion-exchange resin for the recovery of antimony(V) from an industrial waste effluent has been investigated. The source of the effluent is a treatment process designed to reduce the volume of a spent uranium-antimony catalyst prior to its immobilisation and disposal in South Korea; known as the SENSEI Process. Commercial macroporous-type cation (Strong acid cation, Mitsubishi DIAION PK216) and anion (Strong base anion Type I, Mitsubishi DIAION PA316; Strong base anion Type II, Mitsubishi DIAION PA418) exchange resins, as well as macroporous-type chelation resins (Aminophosphonic acid, Lanxess LEWATIT TP260; Sulfonic-phosphonic acid, Purolite MTS957) have undergone batchwise screening. LEWATIT TP260 showed the best antimony removal from sulfuric acid solutions across the entire [H<sup>+</sup>] range tested (0.01 mM – 2 M) and showed no loss of removal performance as a function of increasing sulfate concentration at high [H<sup>+</sup>]. The Hill isotherm model produced the best fit for antimony binding to LEWATIT TP260 (Adj. R<sup>2</sup> = 0.9969), corresponding to an equilibrium adsorption capacity of 160.55 mg g<sup>−1</sup>. Second order kinetics (Adj. R<sup>2</sup> = 0.9808) best described the kinetic uptake of antimony onto the TP260 resin indicating a chemisorption mechanism. The presence of phosphate [PO<sub>4</sub><sup>3−</sup>] had a negligible impact on antimony removal by TP260, however, the presence of molybdate [MoO<sub>4</sub><sup>2−</sup>] and silica, both found in the SENSEI effluent stemming from the original catalyst, significantly reduced the performance of TP260.</p>\u0000 </div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 9","pages":"2593 - 2609"},"PeriodicalIF":3.4,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11814-026-00720-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Colloidal WO2.72 Nanocrystals with Hexagonal Tunnels for Sodium-ion Supercapacitors 钠离子超级电容器用六方通道胶体WO2.72纳米晶

IF 3.4 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2026-04-25 DOI: 10.1007/s11814-026-00713-3

Hyeyeon Jung, Seunghyun Lee, Sol Ahn, Sungyeon Heo

{"title":"Colloidal WO2.72 Nanocrystals with Hexagonal Tunnels for Sodium-ion Supercapacitors","authors":"Hyeyeon Jung, Seunghyun Lee, Sol Ahn, Sungyeon Heo","doi":"10.1007/s11814-026-00713-3","DOIUrl":"10.1007/s11814-026-00713-3","url":null,"abstract":"<div><p>Although sodium-ion supercapacitors are promising candidates for next-generation electrochemical systems, their performance is often hindered by the relatively large ionic radius of Na⁺, which limits facile ion insertion and thus suppresses capacity enhancement. The high surface area and large hexagonal tunnels make colloidal monoclinic WO<sub>2.72</sub> nanocrystals attractive as electrode materials, but their use in Na⁺-based supercapacitors remains unexplored. In this study, we introduce colloidally synthesized monoclinic WO<sub>2.72</sub> nanocrystals capable of effectively accommodating Na⁺ ions within their hexagonal sites for Na<sup>+</sup>-based supercapacitors. By removing insulating organic ligands, the nanocrystals are uniformly deposited onto hydrophilic carbon cloth (CC) through a controllable, additive-free dip-coating process. Furthermore, applying a conformal 1 nm Al<sub>2</sub>O<sub>3</sub> overlayer via atomic layer deposition (ALD) enhances mechanical robustness and prevents nanocrystal delamination, enabling highly reversible charge-storage behavior. A symmetric supercapacitor fabricated with ALD-treated WO<sub>2.72</sub>/CC and a PVA/Na<sub>2</sub>SO<sub>4</sub> gel electrolyte demonstrates stable performance without degradation under bending, achieving an areal energy density of 10.08 µWh/cm<sup>2</sup> at 0.3724 mW/cm<sup>2</sup>. These results highlight the potential of colloidal nanocrystal-based electrodes for high-performance sodium-ion supercapacitors suitable for practical, wearable electronic applications.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 9","pages":"2537 - 2545"},"PeriodicalIF":3.4,"publicationDate":"2026-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Separation of Methanol-Carbon Tetrachloride Azeotropes: Process Optimization and Comparative Assessment of Energy-Efficient Strategies 甲醇-四氯化碳共沸物的分离：工艺优化及节能策略的比较评价

IF 3.4 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2026-04-15 DOI: 10.1007/s11814-026-00718-y

Chuanwu Hu, Jiemei Yu, Chao Sun, Zhankun Jiang, Meilong Yuan, Chao Hua

引用次数: 0

Preparation and Thermal Properties of Expanded Graphite-Ag Particle Composites under Supercritical CO2 Process 超临界CO2条件下膨胀石墨-银颗粒复合材料的制备及热性能研究

IF 3.4 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2026-04-15 DOI: 10.1007/s11814-026-00717-z

Oh Ruem Lee, Won Gyu Lee

{"title":"Preparation and Thermal Properties of Expanded Graphite-Ag Particle Composites under Supercritical CO2 Process","authors":"Oh Ruem Lee, Won Gyu Lee","doi":"10.1007/s11814-026-00717-z","DOIUrl":"10.1007/s11814-026-00717-z","url":null,"abstract":"<div>\u0000 \u0000 <p>Expanded graphite–silver (EG–Ag) composites are expected to play an important role as heat dissipation materials for electronic components, which were synthesized via a supercritical CO<sub>2</sub> fluid process (SCFP), enabling uniform dispersion of silver (Ag) particles within the expanded graphite (EG) matrix. AgNO<sub>3</sub> was dissolved in a binary solvent system consisting of either ethanol (EtOH) or methanol (MeOH) diluted with deionized water (DI water), adsorbed onto the EG surface through SCFP, and followed by thermal treatment to form the EG–Ag composites. The effects of reaction time, co-solvent composition, and post thermal treatment on the structural morphology and its thermal properties of EG–Ag composites were investigated. The SCFP showed the performance of improved Ag particle dispersion on EG surface, and yielded the formation of a continuous thermal conduction network on the EG-Ag composites. Optimization of the co-solvent composition and post thermal treatments further enhanced thermal conductivity in both the through-plane and in-plane directions. These results demonstrate that SCFP is a promising method for fabricating EG–Ag composites with high structural integrity and superior thermal dissipation properties, offering great potential for usage in thermal interface materials for high-power electronic and optoelectronic systems.</p>\u0000 </div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 9","pages":"2547 - 2556"},"PeriodicalIF":3.4,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Continuous Flow Cobalt‑mediated Radical Polymerization of Vinyl Acetate and Hydrolysis of Polyvinyl Acetate to get Polyvinyl Alcohol: Concurrent Control and Purification 连续流动钴介导的醋酸乙烯基自由基聚合和聚乙烯醇水解制备聚乙烯醇：同时控制和纯化

IF 3.4 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2026-04-15 DOI: 10.1007/s11814-026-00712-4

Muhammad Sohail Bashir, Daohong Liao, Zhang Ziqiang, Fuzhou Wang

{"title":"Continuous Flow Cobalt‑mediated Radical Polymerization of Vinyl Acetate and Hydrolysis of Polyvinyl Acetate to get Polyvinyl Alcohol: Concurrent Control and Purification","authors":"Muhammad Sohail Bashir, Daohong Liao, Zhang Ziqiang, Fuzhou Wang","doi":"10.1007/s11814-026-00712-4","DOIUrl":"10.1007/s11814-026-00712-4","url":null,"abstract":"<div>\u0000 \u0000 <p>Controlled radical polymerization (CRP) is a typical procedure for the synthesis of polymers with well-defined molecular parameters (<i>M</i><sub>n</sub>, <i>Đ</i>), composition, and architecture. However, control of the radical polymerization of vinyl acetate (VAc) and removal of residual metallic controlling agents from polyvinyl acetate (PVAc) remains a concern. Herein, tubular reactor connected to fixed bed of silica gel particles is designed for continuous flow cobalt-mediated radical polymerization (CMRP) of VAc and incessant separation of residual cobalt acetylacetonate (Co(acac)<sub>2</sub>) from product to get purified PVAc with well-defined molecular parameters. Linear polymerization time dependence of L<sub>n</sub>[M]<sub>0</sub>/[M] and ascent of molecular weight (<i>M</i><sub>n</sub>) with the rise in conversion while keeping narrow polydispersity (<i>Đ</i> ≈ 1.5) revealed the CRP of VAc in the continuous flow process. The free Co(acac)<sub>2</sub> from the polymer matrix was adsorbed by fixed bed of silica gel, resulting in pure PVAc with a decolorization efficiency (DE) of 65%. In addition, the obtained PVAc was hydrolysed to get polyvinyl alcohol (PVA) with isotactic triads (<i>mm</i>) of 26%, higher to compared with <i>mm</i> of 22% of PVA produced by saponification of PVAc obtained in the absence of Co(acac)<sub>2</sub>. This study therefore provides continuous flow process, an innovative strategy, to produce purified PVAc with well controlled molecular parameters without requiring additional purification steps and enabling technical assistance for potential large-scale practicability.</p>\u0000 </div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 9","pages":"2515 - 2521"},"PeriodicalIF":3.4,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Framework for Electricity Demand Forecasting under AI and EV Expansion: Comparative Analysis of ARIMAX, Prophet, and Diffusion Models 人工智能和电动汽车扩张下的电力需求预测框架：ARIMAX、Prophet和Diffusion模型的比较分析

IF 3.4 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2026-04-15 DOI: 10.1007/s11814-026-00721-3

Wonyoung Jeong, Dongil Shin

{"title":"A Framework for Electricity Demand Forecasting under AI and EV Expansion: Comparative Analysis of ARIMAX, Prophet, and Diffusion Models","authors":"Wonyoung Jeong, Dongil Shin","doi":"10.1007/s11814-026-00721-3","DOIUrl":"10.1007/s11814-026-00721-3","url":null,"abstract":"<div>\u0000 \u0000 <p>The rapid proliferation of Artificial Intelligence (AI) and Electric Vehicles (EVs) is reshaping electricity demand patterns, with important implications for grid stability and long-term energy planning. Conventional forecasting approaches, largely based on historical trends and macroeconomic indicators, have limited ability to represent structurally distinct and technology-driven demand growth. This study proposes a modular electricity demand forecasting framework that explicitly separates baseline demand from AI- and EV-driven components. Within this structure, the ARIMAX model is used to estimate baseline demand from macroeconomic variables, while independent modules capture additional demand associated with AI data centers and EV deployment. Using the United States as a case study, annual data from 2015 to 2050 were analyzed. ARIMA, ARIMAX, and Prophet models were evaluated through observed-data validation and long-term scenario consistency analysis relative to publicly available outlook trajectories. In addition, a diffusion-based probabilistic module was implemented to characterize long-horizon demand uncertainty. Results indicate that incorporating AI and EV components improves scenario consistency relative to baseline configurations. The proposed framework provides a transparent and adaptable structure for integrating emerging demand drivers into medium- to long-term electricity planning under technological disruption.</p>\u0000 <span>AbstractSection</span>\u0000 Graphical abstract\u0000 <p>Modular forecasting framework integrating economic and demographic drivers with technology-induced demand drivers (AI data centers, EV) using ARIMAX, Prophet, and Diffusion models.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div>\u0000 \u0000 </div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 9","pages":"2565 - 2575"},"PeriodicalIF":3.4,"publicationDate":"2026-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Correlation Between Mass Transfer Coefficient, Solubility, and Yield in Paclitaxel Extraction from Taxus chinensis 红豆杉紫杉醇提取传质系数、溶解度与收率的相关性研究

IF 3.4 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2026-04-11 DOI: 10.1007/s11814-026-00711-5

Ga-Eun Ju, Min-Ju Yeon, Jin-Hyun Kim

{"title":"Correlation Between Mass Transfer Coefficient, Solubility, and Yield in Paclitaxel Extraction from Taxus chinensis","authors":"Ga-Eun Ju, Min-Ju Yeon, Jin-Hyun Kim","doi":"10.1007/s11814-026-00711-5","DOIUrl":"10.1007/s11814-026-00711-5","url":null,"abstract":"<div><p>This study quantitatively evaluated the relative contributions of solubility and the mass transfer coefficient to the extraction yield of paclitaxel from <i>Taxus chinensis</i>. As the extraction temperature increased from 25 to 45 °C, paclitaxel solubility surged by 101.4%, while the yield and mass transfer coefficient showed significantly more modest increases of 18.4% and 16.8%, respectively. Regression analysis revealed that yield variations were more closely correlated with mass transfer coefficient than with solubility, indicating that extraction enhancement is primarily governed by facilitated mass transfer rather than solubility gains. A predictive model for the concentration of extracted paclitaxel was subsequently developed by regressing second-order kinetic parameters—equilibrium concentration and initial extraction rate—against solubility and mass transfer coefficient. The strong consistency between predicted and experimental values validated the model’s robustness. This research provides significant academic value by quantifying cell disruption effects through mass transfer coefficient and establishing a systematic framework for efficient paclitaxel recovery.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 9","pages":"2523 - 2535"},"PeriodicalIF":3.4,"publicationDate":"2026-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Silk Fibroin-Regulated Biomimetic Mineralization of Ni(OH)2 for Energy Storage Applications 丝素蛋白调控的Ni(OH)2的仿生矿化用于储能应用

IF 3.4 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2026-04-11 DOI: 10.1007/s11814-026-00688-1

Siva Kumar Ramesh, Seog Woo Rhee, Jinkwon Kim

{"title":"Silk Fibroin-Regulated Biomimetic Mineralization of Ni(OH)2 for Energy Storage Applications","authors":"Siva Kumar Ramesh, Seog Woo Rhee, Jinkwon Kim","doi":"10.1007/s11814-026-00688-1","DOIUrl":"10.1007/s11814-026-00688-1","url":null,"abstract":"<div>\u0000 \u0000 <p>Understanding and controlling biomimetic hybrid materials is essential to obtain novel hierarchical structures and expand the range of potential applications. Here, the biomineralization approach was applied as a rational integration method of silk fibroin and nickel hydroxide. Under protein-directed self-assembly conditions, hollow structures of hierarchical hybrid nickel hydroxide microflowers were systematically formed due to structural disorders such as stacking faults. Notably, the uniform, well-dispersed, and tunable morphology of biomineralized hybrid nickel hydroxides hollow microflowers is achieved by controlling the concentration of silk fibroin and nickel (II) chloride. The effects of organic solvents and nickel precursors on the morphology of nickel hydroxides were also elucidated. The fibroin/Ni(OH)<sub>2</sub> hybrid material exhibits good charge storage performance, rate capability, proton diffusion coefficient, and outstanding cyclic stability owing to its high ionic conductivity and the presence of β-sheet crystallites.</p>\u0000 </div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 9","pages":"2395 - 2409"},"PeriodicalIF":3.4,"publicationDate":"2026-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148553028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Assessment of Metallic Reductants in the Processing of Cathode Materials from Spent Lithium-Ion Batteries: Emphasis on Aqueous and Non-aqueous Leaching Processes 金属还原剂在废锂离子电池正极材料加工中的评价：着重于水浸和非水浸过程

IF 3.4 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2026-04-01 DOI: 10.1007/s11814-026-00691-6

Kurniawan Kurniawan, Sookyung Kim

{"title":"Assessment of Metallic Reductants in the Processing of Cathode Materials from Spent Lithium-Ion Batteries: Emphasis on Aqueous and Non-aqueous Leaching Processes","authors":"Kurniawan Kurniawan, Sookyung Kim","doi":"10.1007/s11814-026-00691-6","DOIUrl":"10.1007/s11814-026-00691-6","url":null,"abstract":"<div>\u0000 \u0000 <p>Leaching is a critical step in the recycling of cathode materials, such as lithium cobalt oxide (LCO) and nickel-cobalt-manganese (NCM) oxide, from spent lithium-ion batteries (LIBs). Conventional processes typically use aqueous mineral acids with hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) as a reductant. Recently, there is a growing attention on the development of non-aqueous leaching, which works by replacing water-based lixiviants with non-aqueous/water-limited systems, such as acidic organic extractants dissolved in non-polar diluents like kerosene. Metallic reductants (e.g., Cu and Al) are attractive alternatives to H<sub>2</sub>O<sub>2</sub>, with potential for co-recovery of reductant metals and improved transport and handling. This study evaluates the effectiveness of metallic reductants (Cu, Al, Ni, Mn, Fe, and Zn) in the leaching of cathode materials (LCO and NCM) under both aqueous and non-aqueous leaching systems. In aqueous leaching (using H<sub>2</sub>SO<sub>4</sub>), all the tested metallic reductants demonstrated effectiveness in advancing the leaching of cathode materials, and their performance was influenced by three key factors: (i) redox reactions, (ii) hydrogen gas (H<sub>2</sub>) formation, and (iii) cementation processes. In contrast, non-aqueous leaching exhibited a more complex mechanism, with Cu identified as the only effective reductant. This result prompted the proposal of leaching equilibria specific to the non-aqueous system. The study further investigated the effects of several parameters, including the mass ratio of metal reductant to cathode material, the presence of graphite, and, in the case of non-aqueous leaching, the impact of water addition and the choice of organic extractants.</p>\u0000 </div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 9","pages":"2427 - 2442"},"PeriodicalIF":3.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11814-026-00691-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552905","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simulation and Optimization Research of a Two-Stage Organic Rankine Cycle System Based on LNG Cold Energy Recovery 基于LNG冷能回收的两级有机朗肯循环系统仿真与优化研究

IF 3.4 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2026-04-01 DOI: 10.1007/s11814-026-00709-z

Dan Jiao, Zhang Zheng, Ziqiang Lv

{"title":"Simulation and Optimization Research of a Two-Stage Organic Rankine Cycle System Based on LNG Cold Energy Recovery","authors":"Dan Jiao, Zhang Zheng, Ziqiang Lv","doi":"10.1007/s11814-026-00709-z","DOIUrl":"10.1007/s11814-026-00709-z","url":null,"abstract":"<div>\u0000 \u0000 <p>This study aims to maximize cold energy utilization during liquefied natural gas (LNG) regasification and enhance system energy efficiency. A two-stage organic Rankine cycle (ORC) system was simulated in Aspen HYSYS software, with synergistic optimization of the four-component working fluid (R50/R170/R290/R600a) composition and key operating parameters (evaporation/condensation pressures). Thermodynamic and economic performance of four schemes were compared: baseline case, two HYSYS-optimized cases and genetic algorithm (GA)-optimized case. The results show that heat exchangers dominated exergy destruction (baseline case: 75.62%, HYSYS-optimized (three-component) case: 56.88%, HYSYS-optimized (four-component) case: 55.10%, GA-optimized case: 62.88%), demonstrating that the working fluid optimization significantly improves heat transfer matching of heat exchangers. In the GA-optimized case, the net power generation of two-stage ORC system can reach 154.56 kW, with an exergy efficiency of 37%. Additionally, the system exhibits good economic feasibility, with a levelized energy cost (<i>LEC</i>) of 0.08 $/kWh and a payback period (<i>PBP</i>) of 5.95 years.</p>\u0000 </div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"43 9","pages":"2477 - 2490"},"PeriodicalIF":3.4,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148552897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0