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Design and optimization of reactive distillation: a review

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 799-818 doi: 10.1007/s11705-021-2128-9

Abstract: Reactive distillation process, a representative process intensification technology, has been widely applied in the chemical industry. However, due to the strong interaction between reaction and separation, the extension of reactive distillation technology is restricted by the difficulties in process analysis and design. To overcome this problem, the design and optimization of reactive distillation have been widely studied and illustrated for plenty of reactive mixtures over the past three decades. These design and optimization methods of the reactive distillation process are classified into three categories: graphical, optimization-based, and evolutionary/heuristic methods. The primary objective of this article is to provide an up-to-date review of the existing design and optimization methods. Desired and output information, advantages and limitations of each method are stated, the modification and development for original methodologies are also reviewed. Perspectives on future research on the design and optimization of reactive distillation method are proposed for further research.

Keywords： reactive distillation     process intensification     design method     reactive phase diagram     optimization algorithm    

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Calculation on phase diagrams of polyetherimide/

Ming TAN,Gaohong HE,Yan DAI,Rujie WANG,Wenhua SHI

Frontiers of Chemical Science and Engineering 2014, Volume 8, Issue 3,   Pages 312-319 doi: 10.1007/s11705-014-1434-x

Abstract: The ternary phase diagrams of polyetherimide (PEI)/ , -dimethylacetamide (DMAc) with H O and BuOH asThe phase diagrams show that 5.5% H O/BuOH system containing 5% BuOH and 0.5% H O, or 6.5% H O/BuOH systemTherefore, BuOH can enhance the phase separation of the PEI casting solution and hereby induce higher

Keywords： phase diagram     solubility parameter     interaction parameter     ultrafiltration     Flory-Huggins theory    

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Individualized Pixel Synthesis and Characterization of Combinatorial Materials Chips Article

Xiao-Dong Xiang, Gang Wang, Xiaokun Zhang, Yong Xiang, Hong Wang

Engineering 2015, Volume 1, Issue 2,   Pages 225-233 doi: 10.15302/J-ENG-2015041

Abstract:

Conventionally, an experimentally determined phase diagram requires studies of phase formation atdiagram of an entire composition spread of a binary or ternary system at a single temperature on onediagram.In this paper, we propose a "one-chip method" to construct a complete phase diagram by individuallydiagram to be mapped on one chip in a single experiment.

Keywords： combinatorial materials chip     phase diagram     pixel synthesis     in-situ characterization     phase-boundary    

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Liquid metal material genome: Initiation of a new research track towards discovery of advanced energy materials

Lei WANG, Jing LIU

Frontiers in Energy 2013, Volume 7, Issue 3,   Pages 317-332 doi: 10.1007/s11708-013-0271-9

Abstract: Particularly, the calculation of phase diagram (CALPHAD) approach as a highly effective way for material

Keywords： genome     energy material     material discovery     advanced material     room-temperature liquid alloy     thermodynamics     phasediagram    

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Neutron Diffraction Investigation of the DyFe11Ti Magnetic Structure and Its Spin Reorientations Article

Olivier Isnard, Eder J. Kinast

Engineering 2020, Volume 6, Issue 2,   Pages 153-157 doi: 10.1016/j.eng.2019.11.009

Abstract:

In this article, we report on the magnetic structure of DyFe11Ti and its thermal evolution as probed by neutron powder diffraction. A thermodiffraction technique was used to follow the temperature dependence of the magnetic moments, as well as their orientation. The Dy and Fe moments were coupled to each other in an antiparallel manner to form a ferrimagnet, where the easy magnetization direction at 2 K was the [110] axis in the basal (a, b) plane. This magnetic structure underwent two successive spin reorientation phenomena with increasing temperature. A large Dy magnetic moment of 9.7 μB was obtained at low temperatures, and the magnitude decreased rapidly to 7.5 μB at 200 K. The largest Fe magnetic moment was observed on the Fe 8i position. A ThMn12-type crystal structure was preserved in the studied temperature range, despite the large changes of the magnetic structure. A sharp tilt was observed at the first-order spin reorientation, TSR1; the angle between the easy magnetization axis and the crystal c axis was reduced from 90° at 2 K to about 20° at 200 K (where c is the easy axis above 200 K); and the Dy and Fe magnetic moments maintained an antiparallel coupling.

Keywords： Neutron diffraction     Magnetic phase diagram     Crystal structure    

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Development of dimensionless P-I diagram for curved SCS sandwich shell subjected to uniformly distributed

Yonghui WANG, Ximei ZHAI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 6,   Pages 1432-1445 doi: 10.1007/s11709-019-0566-y

Abstract: In this paper, a dimensionless Pressure-Impulse (P-I) diagram was constructed as a convenient tool toTo construct the dimensionless P-I diagram, the energy balance method was utilized to yield the pressureThen, the finite element method was employed to validate the developed dimensionless P-I diagram.Finally, the procedures of using the constructed dimensionless P-I diagram to quickly conduct the blast

Keywords： blast loading     curved steel-concrete-steel sandwich shell     Pressure-Impulse diagram     single-degree-of-freedom    

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Study and exploitation of energysaving emulsifier of diesel oil including nanodrop

Wang Hongying,Li Ganzuo​​​​​​​,Zheng Liqiang​​​​​​​,Li Hui,Zhu Changde,Song Jingquan

Strategic Study of CAE 2009, Volume 11, Issue 4,   Pages 21-25

Abstract: Then we measured the pseudo ternary phase diagram of compounded surfactants/water/diesel oil, from which

Keywords： nature carboxylate     pseudo ternary phase diagram     -10#emulsified diesel oil    

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The Method of Calculating the Value of Perfect Information Based on the Influence Diagram

Liu Yanqiong,Chen Yingwu

Strategic Study of CAE 2006, Volume 8, Issue 8,   Pages 45-49

Abstract: presents that the value of perfect information could be described by the information arc in the influence diagramLast, how to calculate the value of perfect information based on the influence diagram is analyzed systematically

Keywords： value of perfect information     influence diagram     Howard canonical form    

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Urban constructed wetlands: Assessing ecosystem services and disservices for safe, resilient, and sustainable cities

Frontiers of Engineering Management   Pages 582-596 doi: 10.1007/s42524-023-0268-y

Abstract: The ternary phase diagram reveals that all constructed wetlands provide more benefits than costs and

Keywords： constructed wetland     emergy     ecosystem services     disservices     ternary diagram    

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Study on wave rotor refrigerators

Yuqiang DAI, Dapeng HU, Meixia DING

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 83-87 doi: 10.1007/s11705-009-0075-y

Abstract: A basic limitation on main structural parameters and operating parameters is deduced and the wave diagram

Keywords： wave rotor     refrigeration     unsteady flow theory     wave diagram    

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Microfluidic production of liposomes through liquid–liquid phase separation in ternary droplets

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 1017-1022 doi: 10.1007/s11705-021-2118-y

Abstract: For demonstration, we used butyl acetate-water-ethanol ternary mixtures as inner phase and an aqueoussolution of surfactants as outer phase to make oil-in-water droplets, which can evolve into water-in-oil-in-waterdouble emulsion droplets by liquid–liquid phase separation of ternary mixtures.

Keywords： microfluidics     liposomes     ternary droplets     phase separation    

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Advances and perspectives in catalysts for liquid-phase oxidation of cyclohexane

Hui LI, Yuanbin SHE, Tao WANG

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 3,   Pages 356-368 doi: 10.1007/s11705-012-0903-3

Abstract: The latest progress and developments in catalysts for the oxidation of cyclohexane are reviewed. Catalytic systems for the oxidation of cyclohexane including metal supported, metal oxides, molecular sieves, metal substituted polyoxometalates, photocatalysts, organocatalysts, Gif systems, metal-organic catalysts and metalloporphyrins are discussed with a particular emphasis on metalloporphyrin catalytic systems. The advantages and disadvantages of these methods are summarized and analyzed. Finally, the development trends in the oxidation technology of cyclohexane are examined.

Keywords： cyclohexane     liquid-phase oxidation     catalysis    

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Simulation of heterogeneous two-phase media using random fields and level sets

George STEFANOU

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 2,   Pages 114-120 doi: 10.1007/s11709-014-0267-5

Abstract: This paper provides a critical examination of existing random field models of heterogeneous two-phase

Keywords： microstructure     random fields     level sets     shape recovery     two-phase media    

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Phase transition regulation and caloric effect

Frontiers in Energy 2023, Volume 17, Issue 4,   Pages 463-477 doi: 10.1007/s11708-023-0860-1

Abstract: Solid state refrigeration based on caloric effect is regarded as a potential candidate for replacing vapor-compression refrigeration. Numerous methods have been proposed to optimize the refrigeration properties of caloric materials, of which single field tuning as a relatively simple way has been systemically studied. However, single field tuning with few tunable parameters usually obtains an excellent performance in one specific aspect at the cost of worsening the performance in other aspects, like attaining a large caloric effect with narrowing the transition temperature range and introducing hysteresis. Because of the shortcomings of the caloric effect driven by a single field, multifield tuning on multicaloric materials that have a coupling between different ferro-orders came into view. This review mainly focuses on recent studies that apply this method to improve the cooling performance of materials, consisting of enlarging caloric effects, reducing hysteresis losses, adjusting transition temperatures, and widening transition temperature spans, which indicate that further progress can be made in the application of this method. Furthermore, research on the sign of lattice and spin contributions to the magnetocaloric effect found new phonon evolution mechanisms, calling for more attention on multicaloric effects. Other progress including improving cyclability of FeRh alloys by introducing second phases and realizing a large reversible barocaloric effect by hybridizing carbon chains and inorganic groups is described in brief.

Keywords： phase transition regulation     caloric effect     solid state refrigeration    

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Effect of graphene and its derivatives on thermo-mechanical properties of phase change materials and

Frontiers in Energy 2022, Volume 16, Issue 2,   Pages 150-186 doi: 10.1007/s11708-021-0795-3

Abstract: Phase change materials (PCMs) play a leading role in overcoming the growing need of advanced thermal

Keywords： phase change materials (PCMs)     graphene     thermal conductivity     characterization    

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Title Author Date Type Operation

Design and optimization of reactive distillation: a review

Journal Article

Calculation on phase diagrams of polyetherimide/

Ming TAN,Gaohong HE,Yan DAI,Rujie WANG,Wenhua SHI

Journal Article

Individualized Pixel Synthesis and Characterization of Combinatorial Materials Chips

Xiao-Dong Xiang, Gang Wang, Xiaokun Zhang, Yong Xiang, Hong Wang

Journal Article

Liquid metal material genome: Initiation of a new research track towards discovery of advanced energy materials

Lei WANG, Jing LIU

Journal Article

Neutron Diffraction Investigation of the DyFe11Ti Magnetic Structure and Its Spin Reorientations

Olivier Isnard, Eder J. Kinast

Journal Article

Development of dimensionless P-I diagram for curved SCS sandwich shell subjected to uniformly distributed

Yonghui WANG, Ximei ZHAI

Journal Article

Study and exploitation of energysaving emulsifier of diesel oil including nanodrop

Wang Hongying,Li Ganzuo​​​​​​​,Zheng Liqiang​​​​​​​,Li Hui,Zhu Changde,Song Jingquan

Journal Article

The Method of Calculating the Value of Perfect Information Based on the Influence Diagram

Liu Yanqiong,Chen Yingwu

Journal Article

Urban constructed wetlands: Assessing ecosystem services and disservices for safe, resilient, and sustainable cities

Journal Article

Study on wave rotor refrigerators

Yuqiang DAI, Dapeng HU, Meixia DING

Journal Article

Microfluidic production of liposomes through liquid–liquid phase separation in ternary droplets

Journal Article

Advances and perspectives in catalysts for liquid-phase oxidation of cyclohexane

Hui LI, Yuanbin SHE, Tao WANG

Journal Article

Simulation of heterogeneous two-phase media using random fields and level sets

George STEFANOU

Journal Article

Phase transition regulation and caloric effect

Journal Article

Effect of graphene and its derivatives on thermo-mechanical properties of phase change materials and

Journal Article