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Fuzzy optimization design of multicomponent refinery hydrogen network

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Chinese Journal of Chemical Engineering 2022年第8期35卷 125-139页

作者： Chun Deng Xuantong Lu Qixin Zhang Jian Liu Jui-Yuan Lee Xiao Feng State Key Laboratory of Heavy Oil Processing College of Chemical Engineering and EnvironmentChina University of PetroleumBeijing 102249China PetroChina Daqing Petrochemical Company Daqing 163000China Department of Chemical Engineering and Biotechnology National Taipei University of TechnologyTaipei 10608China School of Chemical Engineering&Technology Xi’an Jiaotong UniversityXi’an 710049China

Hydrogen and light hydrocarbon components are essential resources of the refinery.The optimization of the refinery hydrogen system and recovery of the light hydrocarbon components contained in the gas streams are key strategies to reduce the operating costs for sustainable development.Many research efforts have been focused on the optimization of single impurity hydrogen network,and the flowrates of the hydrogen sources and sinks are assumed to be constant.However,their flowrates vary along with the quality of crude oil and refinery processing plans.A general superstructure of multicomponent refinery hydrogen network is proposed,which considers four components,namely H_(2),H_(2)S,CH_(4) and C_(2+),as well as the flowrate variations of hydrogen source and hydrogen sink.The mathematical model based on the superstructure is developed with objective functions,including the minimization of total annualized cost and the maximization of overall satisfaction of the hydrogen network.Moreover,the model considers the removal of hydrogen sulfide and the recovery of light hydrocarbon components(i.e.,C_(2+))in the optimization.To verify the applicability of the proposed mathematical model,a simplified industrial case study with four scenarios is solved.The optimization results show that the economic benefit can be maximized by considering both the direct reuse of gas streams from high-pressure separator(HP gas stream)and from low-pressure separator(LP gas stream)and the recovery of the light hydrocarbon streams.The fuzzy optimization method can be used to guide the optimal design of the refinery hydrogen system with multi-period variable flowrates.

关键词： Hydrogen network Mathematical programming multicomponent Fuzzy optimization Light hydrocarbon recovery

Novel heating-and deformation-induced phase transitions and mechanical properties for multicomponent Zr_(50)M_(50),Zr_(50)(M,Ag)_(50)and Zr_(50)(M,Pd)_(50)(M=Fe,Co,Ni,Cu)amorphous alloys

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Journal of Materials Science & Technology 2022年第9期104卷 109-118页

作者： J.Ding A.Inoue F.L.Kong S.L.Zhu Y.L.Pu E.Shalaan A.A.Al-Ghamdi A.L.Greer School of Materials Science and Engineering Tianjin UniversityTianjin 300072China International Institute of Green Materials Josai International UniversityTogane 283-8555Japan Institute of Massive Amorphous Alloy Science China University of Mining TechnologyXuzhou 221116China Department of Physics King Abdulaziz UniversityJeddah 22254Saudi Arabia MISiS National University of Science and TechnologyMoscow 119049Russia School of Materials Science and Engineering Lanzhou Jiaotong UniversityLanzhou 730070China Department of Materials Science and Metallurgy University of CambridgeCambridge CB30FSUK

multicomponent alloys of Zr_(50)M_(50),Zr_(50)(M,Ag)_(50)and Zr_(50)(M,Pd)_(50)(M=Fe,Co,Ni,Cu)can be melt-spun to obtain amorphous ribbons.The maximum thickness for fully amorphous ribbons varies with composition in the range 34-53μm.In contrast,fully amorphous ribbons are not obtainable for binary Zr_(50)Ni_(50)or ternary Zr_(50)(Ni,Cu)_(50)alloys.Heating-induced crystallization occurs through:two stages of amorphous[am]→[~(am')+B2]→[B2+B33]for Zr_(50)M_(50);and[am]→[am'+B2]→[B2+AgZr]for Zr_(50)(M,Ag)_(50);and a single stage of[am]→[B2]for Zr_(50)(M,Pd)_(50),while no B2 phase is formed for the binary and ternary Zr_(50)Q_(50)(Q=Ni or/and Cu)alloys.As-spun amorphous ribbons have good bending plasticity.Remarkably,Zr_(50)M_(50)ribbons in tension show 0.22-0.28%plastic elongation and work-hardening(the yield stress is~820 MPa,the fracture stress is~1200 MPa).When cold-rolled at room temperature to 30%reduction in thickness,Zr_(50)M_(50)ribbons show 10%increase in hardness,while retaining good bending plasticity.Cold-rolling induces precipitation of spheroidal B2 and irregular B33 particles,while deformation in tension induces B2,B33 and also plate-like monoclinic precipitates.The B2 and B33 particles form by polymorphic transformation,and include a high density of internal defects.This novel deformationinduced precipitation has not been recognized for any Zr_(50)Q_(50)binary or ternary alloys.The new multicomponent systems are encouraging for future progress as structural amorphous alloys.

关键词： multicomponent Microstructure Mechanical properties Phase transition Amorphous alloy

Numerical simulation of precipitation kinetics in multicomponent alloys

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Journal of Materials Science & Technology 2022年第33期128卷 98-106页

作者： K.Xu J.D.Liu S.van der Zwaag W.Xu J.G.Li School of Materials Science and Engineering University of Science and Technology of ChinaHefei 230026China Institute of Metal Research Chinese Academy of SciencesShenyang 110016China Novel Aerospace Materials Group Faculty of Aerospace EngineeringDelft University of TechnologyKluyverweg 12629 HSDelftThe Netherlands State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang 110819China

A universal numerical model based on the particle size distribution(PSD)approach has been developed for the simulation of precipitation kinetics in multicomponent alloys during isothermal ageing.Nucleation was implemented utilizing the classical nucleation theory(CNT).Growth and coarsening were modeled by a single growth kinetics equation,which is constructed based on the interfacial diffusion flux balance and the capillarity effect.Only partial off-diagonal terms in the diffusion matrix(diffusion of individual components in the matrix)were taken into account in the calculations to minimize the computational cost while coupling with CALPHAD to extract thermodynamics equilibrium around the interface.A new feature of the model is the incorporation of a more realistic spatial site distribution via a Voronoi construction in the characteristic cell,for the purpose of modifying the diffusion distance.Computational predictions of the precipitate dimensions and the precipitation kinetics were compared with the atom probe tomography(APT)measurements on ternary Ni-Al-Cr alloys isothermally aged at 873 K.It is found that the temporal evolution of the dimensions and composition of the precipitates is well captured,as is the dependence on changes in the alloy composition.The new modification with Voronoi construction demonstrates that the overall precipitation kinetics depends on the density and the spatial site distribution of precipitates.The ability to handle sophisticated alloy chemistries by quantitative equations,the compositional sensitivity of microstructural characteristics emerging from the simulation results,and the ability to visualize the spatial distribution of precipitates make the work very promising for multicomponent alloy design and optimization.

关键词： Precipitation kinetics Thermodynamics multicomponent PSD Voronoi construction

Microfluidic Generation of multicomponent Soft Biomaterials

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Engineering 2022年第6期8卷 128-143页

作者： Yuetong Wang Luoran Shang Yuanjin Zhao Lingyun Sun Department of Rheumatology and Immunology Nanjing Drum Tower Hospital&School of Biological Science and Medical EngineeringSoutheast UniversityNanjing 210096China School of Food Science and Pharmaceutical Engineering Nanjing Normal UniversityNanjing 210046China Shanghai Xuhui Central Hospital&Zhongshan-Xuhui Hospital&Shanghai Key Laboratory of Medical Epigenetics&International Co-Laboratory of Medical Epigenetics and Metabolism of Ministry of Science and Technology Institutes of Biomedical SciencesFudan UniversityShanghai 200032China Oujiang Laboratory(Zhejiang Lab for Regenerative Medicine Vision and Brain Health)&Wenzhou InstituteUniversity of Chinese Academy of SciencesWenzhou 325001China

Soft biomaterials hold great potential for a plethora of biomedical applications because of their deforma-bility,biodegradability,biocompatibility,high bioactivity,and low antigenicity.multicomponent soft bio-materials are particularly attractive as a way of accommodating components made of different materials and generating combinative functions.Microfluidic technology has emerged as an outstanding tool in generating multicomponent materials with elaborate structures and constituents,in that it can manipu-late multiphasic flows precisely on the micron scale.In recent decades,much progress has been achieved in the microfluidic fabrication of multicomponent soft biomaterials with finely defined physicochemical properties capable of controllable therapeutics delivery,three-dimensional(3D)cell culture,flexible devices and wearable electronics,and biosensing for molecules.In the paper,we summarize current pro-gress in multicomponent soft biomaterials derived from microfluidics and emphasize their applications in biomedical fields.We also provide an outlook of the remaining challenges and future trends in this field.

关键词： Soft biomaterial Microfluidics multicomponent Microparticle Microfiber

A Multicenter Metal–Organic Framework for Quantitative Detection of multicomponent Organic Mixtures

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CCS Chemistry 2022年第10期4卷 3238-3245页

作者： Zongsu Han Kunyu Wang Yinlin Chen Jiangnan Li Simon JTeat Sihai Yang Wei Shi Peng Cheng Department of Chemistry Key Laboratory of Advanced Energy Materials Chemistry(MOE)and Renewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071 Department of Chemistry The University of ManchesterManchester M139PL Advanced Light Source Lawrence Berkeley National LaboratoryBerkeleyCA 94720

Instant recognition and quantification of multicomponent organicmixtures,especially the oneswith similar characteristics,remains a key challenge in the chemical industry.Although luminescence sensing is considered a rapid and facile method for the detection of various chemical substances,the simultaneous and quantitative detection of three or more components has not yet been achieved.Herein,we report a rationally designed white-light-emitting metal–organic framework(MOF)EuTb@NKU-102,and demonstrate its application in the simultaneous discrimination of multicomponent organic mixtures.

关键词： multicenter emission multicomponent mixture isomer sensing material metal–organic framework

multicomponent synthesis of dihydropyridines catalyzed by L-proline

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Chinese Chemical Letters 2011年第5期22卷 531-534页

作者： Leila Zare Mohammad Nikpassand Department of Organic Chemistry Islamic Azad University-Rasht BranchRashtIran

multicomponent synthesis of mono and bis 4-substituted-1,4-dihydropyridines from aldehydes,dimedone and ammonium acetate in the presence of an efficient recyclable catalyst,L-proline,in high yield and short reaction t... 详细信息

关键词： multicomponent Dihydropyridines Dimedone L-Proline

multicomponent domino process for the synthesis of some novel 5-(arylidene)-3-((1-aryl-1H-1,2,3-triazol-4-yl)methyl)-thiazolidine-2,4-diones using PEG-400 as an efficient reaction medium and their antimicrobial evaluation

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Chinese Chemical Letters 2015年第1期26卷 50-54页

作者： Jayant Sindhu Harjinder Singh J.M.Khurana Chetan Sharma K.R.Aneja Department of Chemistry Delhi University Department of Microbiology Kurukshetra University

A series of novel thiazolidinedione-triazole hybrids were synthesized by one pot reaction between thiazolidine-2.4-dione,substituted aryl aldehydes,piopargyl bromide and substituted aryl azides using piperidine,CuSO4· 5H2O and sodium ascorbate as catalysts in PEG-400 as a highly efficient and green media.These thiazolidinedione-triazole hybrids were subjected to in vitro antibacterial activity against four strains namely.Staphylococcus aureus.Bacillus subtilis,Escherichia coli,Pseudomonas aeruginosa and antifungal activity against two fungal strains namely,Aspergillus niger and Aspergillus flavus.

关键词： multicomponent AntibacterialAntifungal 1,2,3-Triazoles thiazolidine-2,4-diones

multicomponent flow modeling

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Science China Mathematics 2012年第2期55卷 285-308页

作者： GIOVANGIGLI Vincent CMAP-CNRS Ecole

We present multicomponent flow models derived from the kinetic theory of gases and investigate the symmetric hyperbolic-parabolic structure of the resulting system of partial differential equations.We address the Cauchy problem for smooth solutions as well as the existence of deflagration waves,also termed anchored waves.We further discuss related models which have a similar hyperbolic-parabolic structure,notably the SaintVenant system with a temperature equation as well as the equations governing chemical equilibrium flows.We next investigate multicomponent ionized and magnetized flow models with anisotropic transport fluxes which have a different mathematical structure.We finally discuss numerical algorithms specifically devoted to complex chemistry flows,in particular the evaluation of multicomponent transport properties,as well as the impact of multicomponent transport.

关键词： multicomponent reactive flow Cauchy problem deflagration wave multicomponent transport

Synthesis and Properties of Photodegradable Poly(furan-amine)s by a Catalyst-free multicomponent Cyclopolymerization

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Chinese Journal of Polymer Science 2019年第10期37卷 981-989,I0004页

作者： Wei-Qiang Fu Gui-Nan Zhu Jian-Bing Shi Bin Tong Zheng-Xu Cai Yu-Ping Dong Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications School of Materials Science and EngineeringBeijing Institute of Technology

A series of new photodegradable poly(furan-amine)s(PFAs) were synthesized by a one-pot, catalyst-free, multicomponent cyclopolymerization between diisocyanides, dialkylacetylene dicarboxylates, and aromatic dialdehydes. All polymerizations were conducted in toluene at 100 ℃ for 6 h without inert gas protection and furnished polymers with a satisfactory molecular weight(Mw up to32200) and yield. The PFA structure was confirmed by spectroscopic techniques, such as GPC, FTIR, and NMR, as well as by comparison with a model compound. The polymers exhibited good solubility in common organic solvents and thermal stability. All the PFAs had high refractive indices in the visible light region(400 nm to 800 nm). Moreover, the PFAs were substantially degraded by UV irradiation due to the presence of furan rings. The film thickness reduction rate could be over 90%.

关键词： Photodegradation multicomponent reaction Catalyst-free polymerization