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610 Newest Publications about the topic solution

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Development of an extrusion die with rollers for foaming polymers

22-Jun-2015 | Boris V. Kichatov, Alexey M. Korshunov, Polymer Engineering and Science, 2015

Ideas concerning the use of a flat slot die with rollers in the technology of extrusion foaming of polymers are developed. Based on the experimental study of low‐density polyethylene foaming with isobutane, dependences of the cell density and foam density on the polymer solution viscosity, gap ...

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Explicit Determinations of the Colebrook Equation for the Flow Friction Factor by Statistical Analysis

16-Jun-2015 | Amir Heydari, Elhameh Narimani, Fatemeh Pakniya, Chemical Engineering & Technology, 2015

Abstract The implicit Colebrook equation is considered as a fundamental equation for estimating the friction factor for turbulent flows in pipes. A large number of simple and accurate explicit approximations cover just a limited area of turbulent regime inside rough or smooth pipes. Here, ...

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Application of two analytical approaches for the solution of the population balance equations: Particle breakage process

10-Jun-2015 | A. Hasseine, S. Senouci, M. Attarakih, H.‐J. Bart, Chemical Engineering & Technology, 2015

Abstract The population balance equation (PBE) has been used to model variety of particulate systems. However, few cases of analytical solutions for the breakage process exist, where most of these solutions are for the batch stirred vessel. The analytical solutions of the PBE for particulate ...

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Enhancing allyl alcohol selectivity in the catalytic conversion of glycerol; influence of product distribution on the subsequent epoxidation step

10-Jun-2015 | Luke Harvey, Gizelle Sánchez, Eric M. Kennedy, Michael Stockenhuber, Asia-Pacific Journal of Chemical Engineering, 2015

Abstract Conversion of glycerol to allyl alcohol in a flow reactor and subsequent conversion to glycidol in a batch reactor are discussed in this paper. To increase reaction selectivity in the glycerol to allyl alcohol reaction, the catalyst was modified with alkali metal salts. The treatment ...

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Novel Surfactant Delivery System for Controlling Surfactant Adsorption onto Solid Surfaces. Part III: Oil Displacement Tests

06-Jun-2015 | Hassan Alhassawi, Laura Romero‐Zerón, The Canadian Journal of Chemical Engineering, 2015

Surfactant adsorption onto porous media is a significant problem during surfactant flooding in enhanced oil recovery (EOR). As the surfactant solution flows through the oil formation, surfactant concentration in the solution decreases due to adsorption onto the rock surface before the solution ...

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The study of the distributive mixing in converging channels: Numerical method and analytical approach

02-Jun-2015 | Mehdi Mostafaiyan, Sven Wiessner, Gert Heinrich, Polymer Engineering and Science, 2015

Using an in‐house finite element code, we analyzed the isothermal flow field of a polymer melt in a converging channel. More specifically, we calculated the mean strain function as a criterion for distributive mixing. The used power‐law model is implemented to incorporate the shear thinning ...

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Preparation and properties of film materials of poly(aryl ether ketone)–based phthalonitrile resins

02-Jun-2015 | Tao Liu, Yongpeng Wang, Yu Su, Hongyang Yu, Nan Zhao, Yanhua Yang, Zhenhua Jiang, Polymer Engineering and Science, 2015

A series of poly(aryl ether ketone) polymers (m‐PAEK‐CN) containing phthalonitrile were synthesized by a direct solution polycondensation and characterized by Fourier‐transform infrared spectroscopy and hydrogen nuclear magnetic resonance. Thermal crosslinking of m‐PAEK‐CN, catalyzed by p‐BAPS, ...

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Bidisperse Shrinking Core Model for Supercritical Fluid Extraction

02-Jun-2015 | Andrey G. Egorov, Arthur A. Salamatin, Chemical Engineering & Technology, 2015

Abstract The broken‐and‐intact‐cell model is conventionally used for interpretation of overall extraction curves (OECs) observed in supercritical fluid extraction (SFE) of ground oilseeds. Another possibility, considered here, assumes that the packed beds of the ground material always contain ...

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Segmented Flow‐Based Multistep Synthesis of Cadmium Selenide Quantum Dots with Narrow Particle Size Distribution

29-May-2015 | Viktor Misuk, Maxim Schmidt, Sandra Braukmann, Konstantinos Giannopoulos, Dominik Karl, Holger Loewe, Chemical Engineering & Technology, 2015

Abstract A continuous‐flow microreactor was used to synthetize II–VI semiconductor quantum dots (CdSe). In order to improve the size distribution of the nanoparticles, the synthesis was carried out in a two‐step procedure. A seed solution was obtained in a separate nucleation step, followed by ...

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High‐Throughput Synthesis of Uniform Silver Seed Particles by a Continuous Microfluidic Synthesis Platform

27-May-2015 | Matthias Thiele, Andrea Knauer, Andrea Csáki, Daniell Mallsch, Thomas Henkel, Johann Michael Köhler, Wolfgang Fritzsche, Chemical Engineering & Technology, 2015

Abstract Controlled silver particle geometries require at least a synthesis in two steps which strongly differ in their reaction kinetics. For the first step, the very fast seed formation, chaotic advection‐based micromixers are tested in combination with a batch reactor for the growth step. ...

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