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Chemical engineering research & design : transacti... 23건

  1. [해외논문]   Inside Front Cover  


    Chemical engineering research & design : transactions of the Institution of Chemical Engineers v.135 ,pp. IFC , 2018 , 0263-8762 ,

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

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  2. [해외논문]   Inside Front Cover   SCI SCIE


    Chemical engineering research & design : transactions of the Institution of Chemical Engineers v.135 ,pp. IFC - IFC , 2018 , 0263-8762 ,

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  3. [해외논문]   Contents   SCI SCIE


    Chemical engineering research & design : transactions of the Institution of Chemical Engineers v.135 ,pp. i - ii , 2018 , 0263-8762 ,

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  4. [해외논문]   Formation of alkoxy groups in the synthesis of butylated urea formaldehyde resins: Reaction mechanism and kinetic model   SCI SCIE

    Amin, Shital (<i>Corresponding author</i>.) , Padhiyar, Nitin , Dayal, Pratyush
    Chemical engineering research & design : transactions of the Institution of Chemical Engineers v.135 ,pp. 1 - 20 , 2018 , 0263-8762 ,

    초록

    Abstract Water-resistant amino resins have found diverse applications in the paint and coatings industry. Butylated urea formaldehyde (BUF) amino resins exhibit excellent water-resistant properties due to the presence of butyl groups in its molecular structure. BUF resins are typically synthesized in two steps via addition and condensation reactions. Here, we develop detailed reaction mechanism for the BUF synthesis and develop the kinetic model for the addition reactions. The species in the mechanism are represented in a generic fashion and thus, our mechanism can be utilized not only for the BUF condensation reactions but also for the synthesis of other amino resins. The mechanism incorporates species containing, CH 2 OCH 2 linkages and the new CH 2 OC 4 H 9 end group, the presence of which have been confirmed experimentally. Further, the kinetic model for the addition reactions is developed and the values of the rate constants are determined from the isothermal experiments conducted at different temperatures. We demonstrate that the predictions from our kinetic model match the experimental observations for reaction synthesis under non-isothermal conditions. In addition, we also predict the transient behavior of intermediate species including CH 2 OCH 2 linkages and CH 2 OC 4 H 9 end groups, which qualitatively matches our experimental findings. The presence of these linkages opens up new possibilities to design resin-based composite materials, where functionality of oxygen can be utilized to graft nanomaterials onto the oligomers in subsequent steps. Our mechanism and the kinetic model can also be utilized for the optimization of the process conditions required for synthesis of resin with tailor-made properties. Highlights Detailed reaction mechanism & kinetics for butylated urea formaldehyde (BUF) resins. Only addition step of BUF synthesis is considered. Key species represented in generic fashion—extension to condensation step possible. New intermediates identified—functionalization via nanomaterials possible. Mechanisms, kinetics and new species verified via experimental investigations. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  5. [해외논문]   Dynamics of wet particle–wall collisions: Influence of wetting condition   SCI SCIE

    Buck, Britta (Institute of Solids Process Engineering and Particle Technology, Hamburg University of Technology, Denickestrasse 15, 21073 Hamburg, Germany ) , Tang, Yali (Multiphase and Reactive Flows Group, Department of Mechanical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands ) , Deen, Niels G. (Multiphase and Reactive Flows Group, Department of Mechanical Engineering, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands ) , Kuipers, J.A.M. (Multiphase Reactors Group, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands ) , Heinrich, Stefan (Institute of Solids Process Engineering and Particle Technology, Hamburg University of Technology, Denickestrasse 15, 21073 Hamburg, Germany)
    Chemical engineering research & design : transactions of the Institution of Chemical Engineers v.135 ,pp. 21 - 29 , 2018 , 0263-8762 ,

    초록

    Abstract Particulate processes are characterised by intense contacts between particles and particles with the apparatus walls, where often liquid is present on the surfaces in form of droplets or liquid layers, e.g. in granulation and agglomeration processes. However, the influence of the liquid on collision dynamics is still not fully understood. Therefore, the influence of the liquid on wet particle–wall collisions is investigated via the coefficient of restitution (CoR). The CoR characterises the total energy dissipation during a collision and is defined as ratio of rebound velocity to impact velocity. In most literature regarding collision dynamics of wet particles, a target plate is covered by a liquid layer before the collision. However, this approach is often questioned of its similarity to real wet particle collisions. Therefore, during this work the particle was wetted before colliding with a dry or wet plate. Normal CoR was higher for a wet plate than for a wet particle. The case of a wet–wet collision is comparable to a superposition of collisions where a wet particle or a wet plate was used. Furthermore, during oblique collisions the tangential CoR was found to be smaller for a wet wall compared to a wet particle impacting on a dry wall. Highlights Wetting condition of particle–wall collisions influence collision dynamics. Higher energy dissipation for wet particle than for wet wall. Additional energy dissipation possibly due to liquid inertia. Wet–wet collision superposition of effects of wet particle and wet wall. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  6. [해외논문]   Study on pyrolysis characteristics of tank oil sludge and pyrolysis char combustion   SCI SCIE

    Gong, Zhiqiang (<i>Corresponding author</i>.) , Wang, Zhentong , Wang, Zhenbo , Fang, Peiwen , Meng, Fanzhi
    Chemical engineering research & design : transactions of the Institution of Chemical Engineers v.135 ,pp. 30 - 36 , 2018 , 0263-8762 ,

    초록

    Abstract Integrated thermal treatment of OS is a promising method for massive and effective treatment of the waste. The present work investigated the tank OS pyrolysis by a thermogravimetric analyzer and a tube furnace reactor. Pyrolysis char combustion performance was studied with the thermogravimetric analyzer. Results showed that OS pyrolysis mainly occurred between 200°C and 700°C. With the increase of pyrolysis temperature, char yield decreased while gas yield increased. When pyrolysis temperature exceeded 600°C, the oil yield decreased. Simulated distillation showed that oil products properties barely changed when pyrolysis temperature exceeded 600°C. Light fractions (gasoline and diesel) from OS pyrolysis were more than 28% higher than those of oil from OS extraction. Major components of pyrolysis gas include H 2 , CO, CO 2 , and hydrocarbons (CH S ). CH S content was more than 40% in the pyrolysis gas in all cases. The molar H/C ratio and O/C ratio were lower for OS chars from higher temperature pyrolysis. The surface of OS char was rough with a well-developed pore structure formed during pyrolysis, which was conducive to the combustion reaction. The combustion characteristic of OS char from higher temperature pyrolysis was poorer than that of OS char from lower pyrolysis temperature, resulting from the less volatile content and more carbon crystal degree for OS char from higher temperature pyrolysis. With well-developed pore structure, relative simple composition, good ignition and burnout characteristics, OS char could perform well in actual combustion in CFB boilers. Highlights Proposed an effective way of integrated thermal treatment of OS. Both OS pyrolysis and OS pyrolysis char combustion were studied in this work. OS char from lower pyrolysis temperature had better combustion characteristics. OS char was simpler in composition and more homogeneous in chemical property. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  7. [해외논문]   Agglomeration process of rice protein concentrate using glucomannan as binder: In-line monitoring of particle size   SCI SCIE

    Andreola, Kaciane (Laboratory of Thermo-Fluid Dynamic Processes, School of Chemical Engineering, University of Campinas, 13083-852, Campinas, SP, Brazil ) , Silva, Carlos A.M. (Department of Chemical Engineering, Federal University of São Paulo, 09972-270, São Paulo, Brazil ) , Taranto, Osvaldir P. (Laboratory of Thermo-Fluid Dynamic Processes, School of Chemical Engineering, University of Campinas, 13083-852, Campinas, SP, Brazil)
    Chemical engineering research & design : transactions of the Institution of Chemical Engineers v.135 ,pp. 37 - 51 , 2018 , 0263-8762 ,

    초록

    Abstract Rice protein has raised interest from food industry due to its singular nutritional value and nutraceutical properties. However, rice protein concentrate powder presents fine particles with moderate flowability and low wettability, limiting its use. The production of large and porous granules with both high wettability and flowability can be performed by agglomeration process. In this work, the fluid bed agglomeration using konjac glucomannan as binder agent was investigated as a potential method to improve the quality attributes of the RPC powder. The influence of binder concentration and binder feed rate on particle size and quality of the product was evaluated. In-line particle size was monitored by a spatial filter velocimetry probe. Agglomeration was successfully performed in a fluid bed, resulting in large granules with low moisture content, short wetting time and improvement of the flowability. In-line particle size data allowed a better understanding of the particles growth, which was influenced by the binder concentration and binder feed rate. The best operating condition was obtained using low binder concentration and low binder feed rate, since this condition provided an instant powder with very good flowability at the highest yield. Highlights Fluid bed agglomeration of rice protein powder was successfully performed. Glucomannan can be used as a very special binder for application in agglomeration processes. In-line particle size measurement (SFV probe) meets the off-line values (Mastersizer). In-line particle size distribution could be monitored and provided valuable insight into the behavior of the process. The agglomeration process improved flowability and wettability of the rice protein powder. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  8. [해외논문]   Separation of azeotrope (2,2,3,3-tetrafluoro-1-propanol+water) via heterogeneous azeotropic distillation by energy-saving dividing-wall column: Process design and control strategies   SCI SCIE

    Shi, Puyun (College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China ) , Xu, Dongmei (College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China ) , Ding, Jinfu (Qingdao Huatong Detection and Evaluation Co., Lt., Qingdao 266400, China ) , Wu, Jingyu (College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China ) , Ma, Yixin (College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China ) , Gao, Jun (College of Chemical and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China ) , Wang, Yinglong (College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao 266042, China)
    Chemical engineering research & design : transactions of the Institution of Chemical Engineers v.135 ,pp. 52 - 66 , 2018 , 0263-8762 ,

    초록

    Abstract To separate the azeotrope of 2,2,3,3-tetrafluoro-1-propanol (TFP) and water, the energy-saving heterogeneous azeotropic dividing-wall column (DWC) is proposed using chloroform as an azeotropic agent. Compared with the conventional design, the total condenser duty reduction of 44.57%, total reboiler duty reduction of 42.66% and TAC reduction of 37.79% by the DWC design are obtained. Based on the simulation results, the energy-saving in the DWC design is due to the thermal coupling of the conventional design and the separation of water by the decanter with the purity of 99.5mol%, rather not to the removal of remixing effect for the column sequence. The control strategy performance for the conventional and DWC designs are satisfactory, since TFP and water are separated with high purity, despite the disturbances of the flow rate of fresh feed, fresh feed composition and liquid split ratio. Highlights Implementing heterogeneous azeotropic distillation in a dividing-wall column. Using chloroform as entrainer for the separation of the mixture TFP+water. Process optimization and TAC are discussed. The total reboiler duty reduction of 42.66% by the DWC design is obtained.

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  9. [해외논문]   Foam propagation and oil recovery potential at large distances from an injection well   SCI SCIE

    Norouzi, Hamidreza (Enhanced Oil Recovery Research Center, Petroleum University of Technology, Ahwaz, Iran ) , Madhi, Mehdi (Enhanced Oil Recovery Research Center, Petroleum University of Technology, Ahwaz, Iran ) , Seyyedi, Mojtaba (Chemical and Petroleum Engineering Department, University of Calgary, Calgary, Alberta, Canada ) , Rezaee, Mohmmad (Enhanced Oil Recovery Research Center, Petroleum University of Technology, Ahwaz, Iran)
    Chemical engineering research & design : transactions of the Institution of Chemical Engineers v.135 ,pp. 67 - 77 , 2018 , 0263-8762 ,

    초록

    Abstract While foam propagation, foam–oil interaction and foam oil recovery performance have been investigated by numerous research studies, most of previous works were performed on short porous media with the maximum length of 30cm. Therefore, their results mostly represent foam behavior in the vicinity of the injection well and may not represent the foam propagation, quality and oil recovery potential at large distances from the injection well. In this study, by using a high-pressure and high-temperature rig equipped with a 12-m long porous medium and microscopic visualization facilities, foam stability in the presence and absence of a reservoir crude oil, foam propagation, foam–oil interaction, and finally foam oil recovery potential at large distances from the injection well were investigated. The oil recovery behavior of four tertiary scenarios, including Sodium Dodecyl Sulfate (SDS) foam, Alpha-Olefin Sulfonate (AOS) foam, gas, and simultaneous water alternating gas (SWAG) injection, were investigated. According to results, pressure presented a positive impact on the foam stability. The extent of this impact was a function of the surfactant type. Compared to gas and SWAG injection, in the 12-m long porous medium, foam flooding scenarios presented much stronger oil recovery potentials. This reveals the strong potential of foam flooding in producing the oil trapped in areas deep into the reservoir and far from the injection well. Based on this study, by using a suitable surfactant solution and optimum gas fractional flow, even in the presence of oil, foam can propagate to large distances from the injection well and leads to extra oil recovery. Highlights Pressure has a positive impact on the foam stability. A well-screened foam can propagate to large distances from the injection well. A stable foam has a better oil recovery performance than gas and SWAG injection. Presence of the emulsified oil in the foam film can favor the foam stability. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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  10. [해외논문]   A note on short-term scheduling of multi-grade polymer plant using DNA computing   SCI SCIE

    Sharma, Deepak (<i>Corresponding author</i>.) , Ramteke, Manojkumar
    Chemical engineering research & design : transactions of the Institution of Chemical Engineers v.135 ,pp. 78 - 93 , 2018 , 0263-8762 ,

    초록

    Abstract Short-term scheduling of batch polymer plant involves the scheduling of different orders in parallel available production lines. The scheduling becomes more challenging due to the presence of sequence-dependent changeover constraints between different orders which lead to combinatorial optimization formulation. Such combinatorial optimization problems have exponential time complexity on the silicon-based computer. DNA computing experiments are found to be promising for such combinatorial optimization problems particularly involving unique feasible optimal solution. However, use of DNA to find a solution to real-life problems involving multiple feasible solutions is an emerging area of research. The present paper illustrates the DNA solutions to the short-term scheduling of a polymer plant involving multiple feasible solutions and parallel production lines. The DNA computer aided with nearest neighbour heuristics and iterative implementation found to be successfully searching the optimal solution in a combinatorial search space for three short-term scheduling problems of multi-grade polymer plant. Highlights A DNA computer is developed for solving short term scheduling problems. A hybrid DNA computing with nearest neighbour implemented iteratively. DNA computing applied to three polymer grade scheduling problems. A problem as large as 20-vertex size is solved using DNA computing. Graphical abstract [DISPLAY OMISSION]

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    회원님의 원문열람 권한에 따라 열람이 불가능 할 수 있으며 권한이 없는 경우 해당 사이트의 정책에 따라 회원가입 및 유료구매가 필요할 수 있습니다.이동하는 사이트에서의 모든 정보이용은 NDSL과 무관합니다.

    NDSL에서는 해당 원문을 복사서비스하고 있습니다. 아래의 원문복사신청 또는 장바구니담기를 통하여 원문복사서비스 이용이 가능합니다.

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