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Combining extractive heterogeneous-azeotropic distillation and hydrophilic pervaporation for enhanced separation of non-ideal ternary mixtures

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Frontiers of Chemical Science and Engineering 2020年第5期14卷 913-927页

作者： Eniko Haaz Botond Szilagyi Daniel Fozer Andras Jozsef Toth Environmental and Process Engineering Research Group Department of Chemical and Environmental Process EngineeringBudapest University of Technology and EconomicsBudapest H-1111Hungary Institute of Chemistry University of MiskolcMiskolc H-3515Hungary

The separation of non-ideal mixtures using distillation can be an extremely complex process and there continues to be a need to further improve these techniques.A new method which combines extractive heterogeneous-azeotropic distillation(EHAD)and hydrophilic pervapora-tion(HPV)for the separation of non-ideal termary mixtures is *** improved distillation method combines the benefits of heterogeneous-azeotropic and extractive distillations in one column but no added materials are needed as is usually the case with *** separation of water-methanol-ethyl acetate and water-methanol-isopropyl acetate mixtures were investigated to demonstrate the accuracy of the combined EHAD/HPV *** is not currently an established treatment strategy for the separation of the second mixtures in the *** separation processes were rigorously modelled and optimized using a professional *** objective functions were total cost and energy consumption and heat integration was also *** verification of the process modelling was carried out using laboratory-scale *** heterogeneous-distillation combined with methanol dehydration was found to be more efficient than conventional distillation for the separation of these highly non-ideal mixtures.

关键词： hydrophilic pervaporation non-ideal mixture modelling extractive heterogeneous-azeotropic distillation heat integration

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A new approach for analyzing the effect of non-ideal power supply on a constant current underwater cabled system

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Frontiers of Information Technology & Electronic Engineering 2020年第4期21卷 604-614页

作者： Yu-jia ZANG Yan-hu CHEN Can-jun YANG De-jun LI Ze-jian CHEN Gul MUHAMMAD The State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China

The effect of a constant current(CC)power supply on the CC ocean observation system is a problem that once was *** dynamic characteristics of the CC power supply may have great influence on the whole system,especially the voltage behavior in the event of load *** needs to be *** this paper,a method is introduced to check whether the CC power supply can satisfy the dynamic requirements of the CC ocean observation *** equivalent model to describe the non-ideal CC power supply is presented,through which the dynamic characteristics can be *** verify the feasibility of this model,a minimum system of a single node in the CC ocean observation system is constructed,from which the model is *** on the power failure problem,the output voltage responses are performed and the models are *** the model,the dynamic behavior of the CC power supply is checked in a practical design.

关键词： non-ideal power supply Constant current input Ocean observation system

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Investigation of Shock Waves in non-ideal Gas under the Action of Magnetic Field

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Advances in Pure Mathematics 2017年第10期7卷 583-596页

作者： Kanti Pandey Praveen Prakash Pathak Department of Mathematics & Astronomy Lucknow University Lucknow India

In present paper, certain aspect of shock wave in non-ideal gas, when magnetic field is orthogonal to the trajectories of the gas particles and electrical conductivity is taken to be infinite, is investigated. Considering one-dimensional unsteady non-planer motion, basic equations, its general solution and formation of shock-wave, conservation laws and jumps conditions, variation of area of non-uniform cross section and analytical solution of strong non planer shock is obtained.

关键词： Shock-Waves non-ideal Gases Magnetic Field

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Frequency-Concentration Dependence of Optical Activity of a non-ideal 1D-Superlattice

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Journal of Modern Physics 2011年第12期2卷 1574-1578页

作者： Vladimir V. Rumyantsev Stanislav A Fedorov 不详

In the present work the widths of layers constituting the non-ideal superlattice are much bigger then the characteristic scales of space dispersion. In such a case the contribution of individual layers to gyrotropy can be regarded as independed. Thus the corresponding optical quantities can be expressed through the layers’ gyrotropic characteristics. This approach is applied to calculate the specific rotation angle of plane of polarization of light propagating through a nonideal 1D-superlattice, which varies in composition as well as in layers’ width. We carry out numerical calculation of the frequency dispersion of optical activity of a non-ideal superlattice, which includes impurity layers with point defects.

关键词： Light Propagation non-ideal 1D-Superlattice Optical Activity Exciton Region of the Spectrum

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Voltage Characteristic Analysis of Ultra-high Voltage Half-wavelength Transmission System Based on Wave Process Method

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Journal of Modern Power Systems and Clean Energy 2020年第1期8卷 150-158页

作者： Hao Tian Yutian Liu Dong Yang Xiaohui Qin Yantao Zhang Key Laboratory of Power System Intelligent Dispatch and Control of Ministry of Education Shandong UniversityJinanChina State Grid Shandong Electric Power Research Institute JinanChina China Electric Power Research Institute BeijingChina

The voltage characteristics of a half-wavelength transmission(HWLT)system lack mechanism explanation and systematic *** this paper,both the steady-state and fault voltage characteristics are analyzed and explained based on the wave process *** analysis model is established for HWLT lines and wave propagation equations with different terminal conditions are *** steady-state conditions,voltage profiles along HWLT lines are depicted and partial overvoltage occurs when there is an overload or low-power *** addition,fault voltage characteristics are analyzed under load-rejection or short-circuit *** series resonance overvoltage will happen when short-circuit faults occur at certain positions and its peak value is influenced by grid strength or fault ***,a refined transmission line model is presented to consider non-ideal factors and simulation results demonstrate that geomorphic conditions and electromagnetic environments influence line voltage characteristics to a certain extent.

关键词： Half-wavelength transmission wave process method steady-state voltage fault voltage non-ideal factor

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