Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Evaluation And Modification Of Aspen Fixed Bed Gasifier Models For Inclusion In An Integrated Gasification Combined Cycle Power Plant Simulation
Download Evaluation And Modification Of Aspen Fixed Bed Gasifier Models For Inclusion In An Integrated Gasification Combined Cycle Power Plant Simulation full books in PDF, epub, and Kindle. Read online Evaluation And Modification Of Aspen Fixed Bed Gasifier Models For Inclusion In An Integrated Gasification Combined Cycle Power Plant Simulation ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Book Synopsis Evaluation and Modification of ASPEN Fixed-bed Gasifier Models for Inclusion in an Integrated Gasification Combined-cycle Power Plant Simulation by :
Download or read book Evaluation and Modification of ASPEN Fixed-bed Gasifier Models for Inclusion in an Integrated Gasification Combined-cycle Power Plant Simulation written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Several Advanced System for Process Engineering (ASPEN) fixed-bed gasifier models have been evaluated to determine which is the most suitable model for use in an integrated gasification combined-cycle (IGCC) power plant simulation. Four existing ASPEN models were considered: RGAS, a dry ash gasifier model developed by Halcon/Scientific Design Company; USRWEN, the WEN II dry ash gasifier model originally developed by C.Y. Wen at West Virginia University; the slagging gasifier model developed by Massachusetts Institute of Technology (MIT) and based on Continental Oil Company's (CONOCO) design study for the proposed Pipeline Demonstration Plant; and the ORNL dry ash gasifier model developed by Oak Ridge National Laboratory for the simulation of the Tri-States Indirect Liquefaction Process. Because none of the models studied were suitable in their present form for inclusion in an IGCC power plant simulation, the SLAGGER model was developed by making significant modifications to the MIT model. The major problems with the existing ASPEN models were most often inaccurate material and energy balances, limitations of coal type, or long run times. The SLAGGER model includes simplifications and improvements over the MIT model, runs quickly (less than 30 seconds of computer time on a VAX-11/780), and gives more accurate mass and energy balances.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1985 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fossil Energy Update written by and published by . This book was released on 1986 with total page 952 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Risø-R. written by and published by . This book was released on 1993 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fundamentals of Coal Combustion by : Leon Douglas Smoot
Download or read book Fundamentals of Coal Combustion written by Leon Douglas Smoot and published by Elsevier Publishing Company. This book was released on 1993 with total page 744 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work is a broad, integrated treatment of the fundamentals of coal combustion and gasification. Most of the authors are recognized professionals in the field and all are conducting research work in the Advanced Combustion Engineering Research Center. The focus of the book is on clean and efficient use of coal. Practical chapters on coal processes, including coal technology projects and on acid rain formation control, lay a foundation for the fundamental treatment. The book is comprehensive in its treatment with over 1000 world-wide references, most of which are from the past five years.
Book Synopsis Government Reports Annual Index by :
Download or read book Government Reports Annual Index written by and published by . This book was released on 1986 with total page 1074 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Aspen Process Flowsheet Simulation Model of a Battelle Biomass-Based Gasification, Fischer-Tropsch Liquefaction and Combined-Cycle Power Plant by :
Download or read book Aspen Process Flowsheet Simulation Model of a Battelle Biomass-Based Gasification, Fischer-Tropsch Liquefaction and Combined-Cycle Power Plant written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was done to support the research anddevelopment program of the National Renewable Energy Laboratory (NREL) in thethermochemical conversion of biomass to liquid transportation fuels using currentstate-of-the-art technology. The Mitretek study investigated the use of two biomassgasifiers; the RENUGAS gasifier being developed by the Institute of GasTechnology, and the indirectly heated gasifier being developed by BattelleColumbus. The Battelle Memorial Institute of Columbus, Ohio indirectly heatedbiomass gasifier was selected for this model development because the syngasproduced by it is better suited for Fischer-Tropsch synthesis with an iron-basedcatalyst for which a large amount of experimental data are available. Bechtel with Amocoas a subcontractor developed a conceptual baseline design and several alternativedesigns for indirect coal liquefaction facilities. In addition, ASPEN Plus processflowsheet simulation models were developed for each of designs. These modelswere used to perform several parametric studies to investigate various alternativesfor improving the economics of indirect coal liquefaction.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1986 with total page 1110 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dynamic Reduced Order Modeling of Entrained Flow Gasifiers by : Rory Francis Desmond Monaghan
Download or read book Dynamic Reduced Order Modeling of Entrained Flow Gasifiers written by Rory Francis Desmond Monaghan and published by . This book was released on 2010 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gasification-based energy systems coupled with carbon dioxide capture and storage technologies have the potential to reduce greenhouse gas emissions from continued use of abundant and secure fossil fuels. Dynamic reduced order models (ROMs) that predict the operation of entrained flow gasifiers (EFGs) within IGCC (integrated gasification combined cycle) or polygeneration plants are essential for understanding the fundamental processes of importance. Such knowledge can be used to improve gasifier reliability, availability and maintainability, leading to greater commercialization of gasification technology. A dynamic ROM, implemented in Aspen Custom Modeler, has been developed for a range of EFGs. The ROM incorporates multiple feedstocks, mixing and recirculation, particle properties, drying and devolatilization, chemical kinetics, fluid dynamics, heat transfer, pollutant formation, slag behavior and syngas cooling. The ROM employs a reactor network model (RNM) that approximates complex fluid mixing and recirculation using a series of idealized chemical reactors. The ROM was successfully validated for steady-state simulation of four experimental gasifiers. The throughputs of these gasifiers range from 0.1 to 1000 metric tonnes per day (3 kWth - 240 MWth). Sensitivity analysis was performed to identify the parameters most important to ROM accuracy. The most important parameters are found to be those that determine RNM geometry, particle physical and kinetic properties, and slagging. The ROM was used to simulate the steady-state and dynamic performance of a full-scale EFG system. In steady-state mode, the ROM was used to establish base case and fluxant requirements. The base case performance agreed with design specifications. Steady-state simulation was also used to determine important states for dynamic simulation. Six cases were examined in dynamic mode, including gasifier cold start. Dynamic results showed agreement with industrial experience for gasifier start-up times.
Book Synopsis Modelling of a Biomass-integrated-gasifier/combined-cycle (BIG/CC) System with the Flowsheet Simulation Rogramme Aspen-plus by : R. van Ree
Download or read book Modelling of a Biomass-integrated-gasifier/combined-cycle (BIG/CC) System with the Flowsheet Simulation Rogramme Aspen-plus written by R. van Ree and published by . This book was released on 1995 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling of USS Gasification to Evaluate New Gasifier Design in Aspen Plus by : Taskin Binte Karim
Download or read book Modeling of USS Gasification to Evaluate New Gasifier Design in Aspen Plus written by Taskin Binte Karim and published by . This book was released on 2007 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Solid Fuels Combustion and Gasification by : Marcio L. de Souza-Santos
Download or read book Solid Fuels Combustion and Gasification written by Marcio L. de Souza-Santos and published by CRC Press. This book was released on 2004-06-07 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bridging the gap between theory and application, this reference demonstrates the operational mechanisms, modeling, and simulation of equipment for the combustion and gasification of solid fuels. Solid Fuels Combustion and Gasification: Modeling, Simulation, and Equipment Operation clearly illustrates procedures to improve and optimize the de
Book Synopsis Reduced Order Modeling and Scale-up of an Entrained Flow Gasifier by : Mohammad Hossein Sahraei
Download or read book Reduced Order Modeling and Scale-up of an Entrained Flow Gasifier written by Mohammad Hossein Sahraei and published by . This book was released on 2017 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change has increased attention towards reduction of carbon dioxide (CO2) emissions and other heat-trapping gases to the atmosphere. This has affected the operation of process industries, particularly solid fuel power plants which are responsible for almost a third of the total CO2 emissions. Among the choices for power generation from solid fuels, gasification-based power plants have been accepted as one of the most efficient means of generating electricity from solid fuels, when a CO2 capture unit is considered in the plant's layout. However, improvements in the cost and availability of gasifiers are still required to make this technology competitive with combustors. In recent years, a new class of compact gasifiers, also known as short-residence time gasifiers, has been proposed to reduce the cost of power generation. To speed up the development of this technology, insights regarding the operability, efficiency and feasibility of these gasifiers are required through a mathematical modelling analysis. This research aims to develop a computationally efficient dynamic reduced order model (ROM) that considers the essential features of a short-residence time gasifier. The ROM was initially validated for steady-state simulation of the pilot-scale gasifier by using data obtained from computational fluid dynamic (CFD) simulations and experimental tests. Although the framework of the ROM was fixed and developed based on CFD simulation generated at a base-case condition, the results showed reasonable agreement between the two models under different operating conditions and kinetic parameters. In addition, the ROM predicted the experimental observations for conversion in the range of 48-90%. The proposed ROM has shown to be computationally attractive as it reduces the computation time by two orders of magnitude when compared to CFD simulations. The attractive computational costs of the ROM has allowed the evaluation of the gasifier's performance through sensitivity analysis, uncertainty quantification, parameter estimation, dynamic simulation and process scale-up. The results of a sensitivity analysis indicated that the recirculation ratio and oxygen flowrate have a greater effect on the process compared to model geometry and kinetic parameters. An uncertainty quantification was performed to investigate the variability in the ROM's key outputs in the presence of uncertainty in parameters that affect the feedstock's properties and the mixing/laminar flows within different zones of the reactor network. The study revealed significant variability in the conversion, peak temperature and steam percentage in the syngas; while the dry syngas composition does not seem to be significantly affected by the uncertainty of the considered parameters. Since the recirculation ratio is the most influential parameter in the ROM, and its true value is typically uncertain, a new semi-empirical correlation was proposed to estimate this parameter. The proposed correlation improved the well-known method of Thring and Newby for jet-flow recirculation by adding a term that takes into account the changes in the feed streams on the recirculation. This feature enhances the prediction capabilities of the reactor network, especially in dynamic simulations where the inlet flowrates may change over time, e.g., for load-following power plants. The dynamic simulation of the gasifier was then performed by implementing this correlation. Accordingly, the operability of the pilot-scale gasifier based on the responses the dry syngas composition, temperature distribution, cold gas efficiency, slag thickness and flowrate were studied under sinusoidal changes in the feed, load-following and co-firing scenarios. Furthermore, the ROM was scaled-up to perform the steady-state simulation of a 3,000 TPD commercial-scale short-residence time gasifier which uses a multi-element injector feed system with 36 nozzles. The performance of the gasifier was then examined under changes in the operating pressure, number of injectors and fuel distribution among injection tubes. The results provided valuable insights regarding the suitability of design parameters and the operational conditions which may damage the gasifier's refractory and injectors. Based on the simulations performed through this research, a systematically developed ROM that captures the streamlines of the multiphase flow, can predict the behaviour of a gasifier for a wide range of operating conditions with reasonable accuracy. Moreover, a ROM can provide valuable insights on the following objects: 1) the suitability of the design parameters and model assumptions; 2) identifying the critical operating conditions or demand scenarios that may impose a safety hazard or operational constraints; and 3) the flexibility of the system under the changes in fuel, load and failure of mechanical equipment.
Book Synopsis Solid Fuels Combustion and Gasification by : Marcio L. De Souza-Santos
Download or read book Solid Fuels Combustion and Gasification written by Marcio L. De Souza-Santos and published by CRC PressI Llc. This book was released on 2010-03-16 with total page 486 pages. Available in PDF, EPUB and Kindle. Book excerpt: As an increasing number of professionals and graduate students enter the field of solid-based power generation, they all require an command of process and equipment, as well as the theory behind it all. However, their informational needs and understanding differ based on their experience and the task at hand. Solid Fuels Combustion and Gasification: Modeling, Simulation, and Equipment Operations, Second Edition explores evolving solid fuel combustion and gasification techniques that are leading to much lower sulfur and nitrogen oxide emissions. It also shows how to increase the efficiency of processes dealing with materials such as coal, biomass, solid residues, etc. Many of the successes of these methods are the result of process optimization resulting from mathematical modeling and simulation. This book introduces and explores these techniques, taking a moderate approach that is neither too narrow nor too basic, making it useful to graduate students, engineers, and professionals. It illustrates the modeling and constructive and operational aspects of equipment used in combustion and gasification of solid fuels. It was written based on the idea that developing models and computer simulators is the optimal method to acquire real and testable understanding of a subject in the area of processing. Model complexity is extended only as far as needed to achieve a reasonable representation of the equipment described in the book, and the author provides specific and carefully selected case studies that: Cover many industrial processes involving combustion or gasification of solid fuels Provide easy-to-follow examples on how to set simplifying assumptions regarding the operation of real industrial equipment Enable relatively quick introduction of fundamental equations without the need for unnecessarily complex treatments The main strategy of the book is to teach by example, and the basic methods illustrated here can be used for modeling a wide range of processes and equipment commonly found in industry. It is a carefully constructed volume which presents essential concepts that minimize the need for other texts, and it can also be used as an introduction to more complex models.
Book Synopsis Great Plains Aspen Model Development by : I. H. Ringard
Download or read book Great Plains Aspen Model Development written by I. H. Ringard and published by . This book was released on 1985 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Energy from Biomass by : Peter Quaak
Download or read book Energy from Biomass written by Peter Quaak and published by World Bank Publications. This book was released on 1999 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: While energy is essential for development, standard fossil fuels are often in short supply in countries where it is needed most. However, alternative fuel resources abound in the form of agricultural and municipal waste or "biomass." This report reviews the state of the art of biomass combustion and gassification systems, their advantages and disadvantages. It also encourages investment in use of these technologies to enable developing countries to better exploit their biomass resources and help close the gap between their energy needs and their energy supply.
Book Synopsis Computer Modeling of the [Morgantown Energy Research Center of the United States Department of Energy] Fixed Bed Gasifier by : P. R. DeSai
Download or read book Computer Modeling of the [Morgantown Energy Research Center of the United States Department of Energy] Fixed Bed Gasifier written by P. R. DeSai and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
![Download Computer Modeling of the [Morgantown Energy Research Center of the United States Department of Energy] Fixed Bed Gasifier PDF Online Free](https://books.google.com/books/content/images/frontcover/lyFgHQAACAAJ?fife=w200-h370)
