Download or read book Application of Reactive Distillation for Production of N butyl Acetate from N butanol and Dilute Acetic Acid written by and published by . This book was released on 2006 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this research, the simulations of n-butyl acetate synthesis from n-butanol and dilute acetic acid via reactive distillation, in which chemical reactions and separations occur simultaneously, were studied by ASPEN PLUS program. n-butyl acetate esterification was catalyzed by Amberlyst 15. The objective of this work is to produce n-butyl acetate with a concentration not less than 98 mol%. he studies were divided into 2 main parts of pilot and industrial scales. In the pilot scale study, it was found that the reactive distillation equipped with a decanter with total recycle of the organic phase to the column at stage 2 is a suitable column configuration. For the single reactive distillation column, when the concentration of acetic acid is lowered, higher overall energy of the system is required. Considering the case with a pretreatment of acetic acid from 35 wt% to 65 wt%, the pervaporation-reactive distillation hybrid system requires lower energy than the distillation-reactive distillation hybrid system as well as the case with the single reactive distillation. In the industrial scale study, total energy consumptions of the systems follow similar trend of the pilot scale study. However, when considering the total annual cost for the case with 35 wt% acetic acid feed, it was revealed that the single reactive distillation consisting of 0 rectifying, 7 reaction, and 2 stripping stages offers the lowest total annual cost followed by the pervaporation-reactive distillation hybrid system and the distillation-reactive distillation hybrid system,respectively.
Download or read book Design and Control of a Reactive Distillation Column for the Production of Butyl Acetate from Dilute Acetic Acid written by and published by . This book was released on 2006 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recovery of the dilute acetic acid becomes important issues due to economic and environmental awareness. The present research is focused on the application of a reactive distillation as a potential alternative method for dilute acetic acid recovery. The synthesis of butyl acetate, from esterification of dilute acetic acid with butanol in the reactive distillation is investigated with HYSYS commercial software. The model prediction by the HYSYS simulator is validated with experimental results reported in literature and a good agreement is observed. The effect of dilute acetic acid concentration on reactive distillation performances in terms of butyl acetate production is first studied. The influences of key operating variables on the performance of the reactive distillation are also evaluated in order to design the reactive distillation. Finally, the closed-loop control of a reactive distillation column is explored. Two alternative control structures are evaluated using 80 wt% acetic acid concentration for the production of butyl acetate. Disturbances in fresh feed flow rate and compositions are made to examine the rangeability of the control structures.
Download or read book Recovery of Dilute Acetic Acid for Butyl Acetate Production by a Reactive Distillation Column written by and published by . This book was released on 2008 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Separation and Purification Technologies in Biorefineries written by Shri Ramaswamy and published by John Wiley & Sons. This book was released on 2013-02-04 with total page 730 pages. Available in PDF, EPUB and Kindle. Book excerpt: Separation and purification processes play a critical role in biorefineries and their optimal selection, design and operation to maximise product yields and improve overall process efficiency. Separations and purifications are necessary for upstream processes as well as in maximising and improving product recovery in downstream processes. These processes account for a significant fraction of the total capital and operating costs and also are highly energy intensive. Consequently, a better understanding of separation and purification processes, current and possible alternative and novel advanced methods is essential for achieving the overall techno-economic feasibility and commercial success of sustainable biorefineries. This book presents a comprehensive overview focused specifically on the present state, future challenges and opportunities for separation and purification methods and technologies in biorefineries. Topics covered include: Equilibrium Separations: Distillation, liquid-liquid extraction and supercritical fluid extraction. Affinity-Based Separations: Adsorption, ion exchange, and simulated moving bed technologies. Membrane Based Separations: Microfiltration, ultrafiltration and diafiltration, nanofiltration, membrane pervaporation, and membrane distillation. Solid-liquid Separations: Conventional filtration and solid-liquid extraction. Hybrid/Integrated Reaction-Separation Systems: Membrane bioreactors, extractive fermentation, reactive distillation and reactive absorption. For each of these processes, the fundamental principles and design aspects are presented, followed by a detailed discussion and specific examples of applications in biorefineries. Each chapter also considers the market needs, industrial challenges, future opportunities, and economic importance of the separation and purification methods. The book concludes with a series of detailed case studies including cellulosic bioethanol production, extraction of algae oil from microalgae, and production of biopolymers. Separation and Purification Technologies in Biorefineries is an essential resource for scientists and engineers, as well as researchers and academics working in the broader conventional and emerging bio-based products industry, including biomaterials, biochemicals, biofuels and bioenergy.
Download or read book 23 European Symposium on Computer Aided Process Engineering written by Alexander Niesbach and published by Elsevier Inc. Chapters. This book was released on 2013-06-10 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Due to the scarcity of oil in the future, alternative resources and production pathways for the production of chemicals need to be identified. To allow for an economic production of these chemicals, the use of innovative equipment and methods has to be investigated to intensify the processes. Reaction distillation integrates separation by distillation and reaction into one unit and is already known to be a promising concept to improve process performance, leading to more sustainable processes. However, the design of reactive distillation processes using bio-based raw materials is difficult because the wide impurity profile of the reactants may lead to a large number of additional reactions and thermodynamic non-idealties. Hence, within this work, a 4-step methodology for the design of a reactive distillation column processing bio-based resources is presented. In this study, the focus is on the impact of impurities, resulting from the use of bio-based raw material. Based on these results, the product purity in presence of the impurities is analysed and operational and design changes to overcome identified product purity limitations will be presented.
Download or read book Proceedings of the 4th International Conference on Separations Science and Technology written by Zhangfa Tong and published by World Scientific. This book was released on 2004 with total page 1062 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the latest achievements of separation science and technology. It highlights the application of separation with regard to problems of current interest, such as the protection of the environment and the development of emerging technology, including chemical engineering, biotechnology, renewable energy sources and recycling of materials.
Download or read book Reactive Distillation written by Kai Sundmacher and published by John Wiley & Sons. This book was released on 2006-08-21 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a reactive distillation column, both the chemical conversion and the distillative separation of the product mixture are carried out simultaneously. Through this integrative strategy, chemical equilibrium limitations can be overcome, higher selectivities can be achieved and heat of reaction can be directly used for distillation. Increased process efficiency and reduction of investments and operational costs are the direct results of this approach. Highly renowned international experts from both industry and academia review the state-of-the-art and the future directions in application, design, analysis and control of Reactive Distillation processes. Part I surveys various industrial applications and covers both established large scale processes as well as new chemical reaction schemes with high future potential. Part II provides the vital details for analysis of reactive phase equilibria, and discusses the importance of chemical reaction kinetics, while Part III focuses on identifying feasible column configurations and designing their internal structure. Analysis and control of the complex dynamic and steady-state behavior of reactive distillation processes are described in Part IV. Reactive Distillation - a very promising alternative to conventional reaction-distillation flow schemes.
Download or read book Solvent Extraction of Wastewaters from Acetic acid Manufacture written by N. Lawrence Ricker and published by . This book was released on 1980 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Model Predictive Control of a Reactive Distillation for Butyl Acetate Production written by and published by . This book was released on 2007 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Application of a reactive distillation for butyl acetate production has been received increasing attention over last decades because it can reduce both operating costs as well as capital investments. However, the control of reactive distillation is a challenging problem due to its complex dynamics which results from combining the reaction and separation into single unit. Conventional PID control cannot always handle its high nonlinearity. Therefore, this research considers the application of a model predictive control (MPC) to a butyl acetate reactive distillation column. A dynamic model of the reactive distillation for butyl acetate production is developed based on material and energy balances, vapor-liquid equilibrium and reaction kinetics. The accuracy of simulation results is compared with the literature and a good agreement is observed. Two alternative control structures based on a MPC controller are proposed and the performances of both the control structures for disturbance rejection and set-point tracking are investigated and discussed. Finally, the performance of MPC controller is evaluated and compared to that of a conventional PI controller.
Download or read book Synthesis of Reactive Distillation Processes written by Erik Stein and published by . This book was released on 2003-01 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reactive Distillation written by Vandana Sakhre and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chemical process industries deal with production which further utilizes reaction followed by separation of the reaction mixtures. Reactive distillation is a new technique of combination of both reaction and separation in a single unit beneficial for equilibrium-limited reactions and also cost-effective. This makes it a highly complex process because many parameters involved in both reaction and separation are interactive in nature. In this chapter, modeling, simulation, and optimization of reactive distillation are presented. Methyl acetate production via reactive distillation is chosen as a case study. The results are compared for both experimental and simulation studies. The synthesis of methyl acetate was carried out in a packed RDC by catalytic esterification using acetic acid and methanol as reactants in a pilot-scale experimental setup. A strong acidic ion exchange catalyst, Amberlyst-15, was used to enhance the rate of heterogeneous esterification reaction. The result obtained was observed with change in various variables including the reflux ratio (RR), distillate-to-feed (D/F) ratio, and bottom-to-feed (B/F) ratio with respect to product composition. The optimization and sensitivity analysis was carried out using Aspen Plus process simulation software.
Download or read book Reactive Distillation for Synthesis of Ethyl Tertiary Butyl Ether on the Ethanol and Tertiary Butanol on Beta Zeolite Catalyst written by Nisakorn Sriwithun and published by . This book was released on 2000 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Semi batch Reactive Extractive Distillation for Production of Acetic Acid Esters with Different Alcohols written by 徐立文 and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Simulation of Ethyl Acetate Synthesis Via Reactive Distillation written by Khairul Naim Bin Ahmad and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ethyl acetate (EtAc) is mainly used as solvent in paints, adhesives and coatings, eliminating the use of aromatic compounds. Reactive distillation is a type of process intensification in which the separation and reaction is combined in one vessel. In this work, reactive distillation (RD) process for EtAc was implemented using process simulator Aspen HYSYS by applying the data obtained from the bibliography. A sensitive analysis was performed to determine the effects of key design and operating variables on column performance and, subsequently, an optimal column configuration was obtained.
Download or read book Comprehensive Organic Chemistry Experiments for the Laboratory Classroom written by Carlos A. M. Afonso and published by Royal Society of Chemistry. This book was released on 2016-12-16 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt: This expansive and practical textbook contains organic chemistry experiments for teaching in the laboratory at the undergraduate level covering a range of functional group transformations and key organic reactions.The editorial team have collected contributions from around the world and standardized them for publication. Each experiment will explore a modern chemistry scenario, such as: sustainable chemistry; application in the pharmaceutical industry; catalysis and material sciences, to name a few. All the experiments will be complemented with a set of questions to challenge the students and a section for the instructors, concerning the results obtained and advice on getting the best outcome from the experiment. A section covering practical aspects with tips and advice for the instructors, together with the results obtained in the laboratory by students, has been compiled for each experiment. Targeted at professors and lecturers in chemistry, this useful text will provide up to date experiments putting the science into context for the students.
Download or read book Reactive Distillation Design and Control written by William L. Luyben and published by John Wiley & Sons. This book was released on 2009-03-30 with total page 580 pages. Available in PDF, EPUB and Kindle. Book excerpt: After an overview of the fundamentals, limitations, and scope of reactive distillation, this book uses rigorous models for steady-state design and dynamic analysis of different types of reactive distillation columns and quantitatively compares the economics of reactive distillation columns with conventional multi-unit processes. It goes beyond traditional steady-state design that primarily considers the capital investment and energy costs when analyzing the control structure and the dynamic robustness of disturbances, and discusses how to maximize the economic and environmental benefits of reactive distillation technology.
Download or read book Optimization Strategies for Reactive Distillation Retrofit Synthesis and Production and Distribution Planning written by Jennifer Renee Jackson and published by . This book was released on 2003 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
