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Experimental Investigations On Combustion And Emission Behaviour During Oxy Coal Combustion
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Book Synopsis Experimental Investigations on Combustion and Emission Behaviour During Oxy-coal Combustion by : Bhupesh Dhungel
Download or read book Experimental Investigations on Combustion and Emission Behaviour During Oxy-coal Combustion written by Bhupesh Dhungel and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Numerical and Experimental Investigation of the Oxy-coal Combustion in Carbon Capture Technologies by : Maryam Gharebaghi
Download or read book Numerical and Experimental Investigation of the Oxy-coal Combustion in Carbon Capture Technologies written by Maryam Gharebaghi and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Oxy-fuel Combustion by : Chuguang Zheng
Download or read book Oxy-fuel Combustion written by Chuguang Zheng and published by Academic Press. This book was released on 2017-09-14 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxy-fuel Combustion: Fundamentals, Theory and Practice provides a comprehensive review of various aspects of oxy-fuel combustion technology, including its concept, fundamental theory, pilot practice, large-scale feasibility studies and related practical issues, such as the commissioning and operation of an oxy-fuel combustion plant. Oxy-fuel combustion, as the most practical large-scale carbon capture power generation technology, has attracted significant attention in the past two decades. As significant progress has been achieved in worldwide demonstration and the oxy-combustion concept confirmed by Schwartze Pump, CUIDEN, Callide, Ponferrada and Yingcheng projects in the past five years, this book provides a timely addition for discussion and study. Covers oxy-fuel combustion technology Includes concepts, fundamentals, pilots and large-scale feasibility studies Considers related practical issues, such as the commissioning and operation of an oxy-fuel combustion plant Focuses on theories and methods closely related to engineering practice
Book Synopsis Laser-based Investigation of Gas and Solid Fuel Combustion under Oxy-Fuel Atmosphere by : Sebastian Bürkle
Download or read book Laser-based Investigation of Gas and Solid Fuel Combustion under Oxy-Fuel Atmosphere written by Sebastian Bürkle and published by BoD – Books on Demand. This book was released on 2019-03-04 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oxy-fuel combustion has the potential to reduce the atmospheric CO2-emissions of fossil fuel power plants by burning gaseous or solid fuels under an atmosphere of carbon dioxide and oxygen. The combustion under oxy-fuel operating conditions, however, is accompanied by major changes in the combustion behavior. The underlying chemical and physical processes are complex and highly coupled, which impedes investigations and modeling. Since tactile and most of the optical measurement techniques fail under the sensitive and simultaneously harsh environments of oxy-fuel combustion, an optical in-situ measurement system based on tunable diode laser absorption spectroscopy is developed in this work. This system allows to investigate the thermochemical state of combustion gases with respect to the quantitative concentrations of multiple combustion-relevant gases and the gas temperature. In combination with a newly developed and applied measurement strategy, the system even allows for a measurement of the gas residence time distribution. To improve the measurement accuracy, multiple absorption line parameters are experimentally determined. The measurement system is applied to three oxy-fuel combustion systems. First, the thermochemical state of the laminar, non-premixed methane combustion under oxy-fuel atmosphere is studied. The turbulent, premixed combustion of the same fuel under air and two oxy-fuel atmospheres is studied in a 20 kWth swirled combustor. Measurements of the residence time distribution of fluids in the combustion chamber provide insights into mixing and transport properties of the flow. The thermochemical state reveals insights into the reaction progess and flow mixing. Co-firing of three different solid fuels in an assisting gas flame is investigated for a combined thermal power up to 40 kWth. Here, the char burnout of the particles is investigated. The thermochemical state of the combustion of pure torrefied biomass under air and oxy-fuel combustion atmosphere is investigated in a 60 kWth close-to-application facility and compared to equillibrium calculations.
Book Synopsis Combustion of Pulverised Coal in a Mixture of Oxygen and Recycled Flue Gas by : Dobrin Toporov
Download or read book Combustion of Pulverised Coal in a Mixture of Oxygen and Recycled Flue Gas written by Dobrin Toporov and published by Elsevier. This book was released on 2014-05-30 with total page 199 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combustion of Pulverised Coal in a Mixture of Oxygen and Recycled Flue Gas focuses on a niche technology, combustion of coal in an oxygen rich environment, which is one approach to obtaining ‘clean coal,’ by making it easier to capture carbon that is released in the combustion process. Toporov’s book breaks ground on covering the key fundamentals of oxycoal technologies, which have not yet been covered in this depth. Combustion of Pulverised Coal in a Mixture of Oxygen and Recycled Flue Gas summarizes the main results from a pioneering work on experimental and numerical investigations of oxyfuel technologies. It provides the theoretical background of the process, the problems to be faced, and the technical solutions that were achieved during these investigations. Summarizes results from investigations of oxyfuel technologies performed at Aachen University, Germany Provides theoretical background, as well as the primary problems of these technologies and how they can be solved
Book Synopsis Fundamentals of the Physical-Chemistry of Pulverized Coal Combustion by : L Lahaye
Download or read book Fundamentals of the Physical-Chemistry of Pulverized Coal Combustion written by L Lahaye and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 505 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of coal for the production of energy is certainly not a new area of research. Many research works were carried out to improve the efficiency of industrial and domestic facilities. In the sixties, however, because of the availability and low cost of petroleum, coal consumption decreased and the research effort in this area was minimum. Meanwhile, the situation has totally changed. Considering the reserves of oil and the instability ofregions where they are located, it is becoming absolutely necessary to develop other sources of energy.The major alternative to oil appears to be coal, at least for the near future. Indeed, the reserves known today represent several centuries of energy consumption.!t is therefore becoming urgent to develop efficient and non polluting technologies to produce energy from coal. The main possibilities are : · liquefaction · gasification · directed combustion. Research and development efforts on liquefaction have been considerably reduced because of high cost of technologies involved and poor prospects for the next two decades. Research works on gasification are progressing; it is a promising approach. However, direct combustion either in pulverized coal furnaces or in fluidized beds is the more promising way of expanding rapidly the utilization of coal. These techniques are already used in some facilities but many environmental problems remain, slowing down their development.
Book Synopsis Oxy-fuel Fluidized Bed Combustion of Victorian Brown Coal by : Bithi Roy
Download or read book Oxy-fuel Fluidized Bed Combustion of Victorian Brown Coal written by Bithi Roy and published by . This book was released on 2014 with total page 241 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal contributes to almost forty percent of global power generation. As conventional coal-fired power generation technologies result in large CO2 emission, the pursuit for new technologies focuses on either reducing CO2 emission or that allows easier capture of the emitted CO2 from coal-fired power plants. Oxy-fuel fluidized bed (Oxy-FB) combustion is one such technology due to its ability to produce concentrated CO2 stream in the flue gas. This concentrated CO2 allows easier capture for subsequent transportation and storage. Other important benefits of this technology are the potential for using any type of fuel, and the ability to control SO2 and NOX emissions. Despite its perceived advantages over conventional technologies, very little is known about the applicability of Oxy-FB for brown coal. Brown coal accounts for 91% of Victoria's current electricity needs. Since Victoria has an estimated reserve of over 500 years of brown coal at the current consumption rate, successful application of Oxy-FB can potentially result in environment friendly power generation in Victoria. This first-ever study investigates the Oxy-FB combustion using Victorian brown coal in a combined experimental and modelling approach. The research involves designing and commissioning of a 10 kWth fluidized bed rig, carrying out experiments in laboratory scale and bench scale equipment, and performing thermodynamic and process modelling.Laboratory scale experiments using single char particle were conducted to investigate the combustion characteristics of individual and large char particle under Oxy-FB conditions. Particle temperature was observed to be higher compared to bed temperature. Up to 48°C difference was noticed between the char particle temperature and the bed temperature using 15% (v/v) steam in oxy-fuel combustion atmosphere. The temperature of the char particle during Oxy-FB combustion has practical implication for agglomeration.The bench scale experiments were carried out to evaluate combustion efficiency, agglomeration characteristics, sulphation characteristics, carbonation characteristics, NOX (NO, NO2 and N2O) emission, SOX (SO2 and SO3) emission, and trace elements (Hg, Se, As and Cr) emissions during Oxy-FB combustion of Victorian brown coal. A high level of CO2 concentration (90-94% in dry flue gas), over 99% combustion efficiency and no bed agglomeration under oxy-fuel combustion conditions including those with the addition of steam at temperatures between 800°C and 900°C. Moreover, the measured NOX and SOX concentration levels in the flue gas are within the permissible limits for coal-fired power plants in Victoria. This implies that additional NOX and SOX removal systems may not be required with Oxy-FB combustion of Victorian brown coal. The gaseous mercury concentrations, however, are considerably higher under oxy-fuel combustion compared to air combustion suggesting that mercury removal system may be required to avoid corrosion in the CO2 separation units if CO2 capture and transportation is intended. These conventional pollutants and trace elements emission characteristics are of great importance for the design of the gas cleaning systems for CO2 capture and storage (CCS) purposes. Furthermore, these results also provide information for selecting the optimum operating condition.Thermodynamic equilibrium modelling was carried out to predict the compounds formed during the combustion of Victorian brown coal under different Oxy-FB combustion conditions. It was predicted that the amount of toxic gaseous Cr6+ species was greater for oxy-fuel combustion than for air combustion. The distribution of toxic Se4+ species, however, remained almost the same in both combustion conditions within the typical temperature range for Oxy-FB combustion (800 - 950°C). A process model on Oxy-FB combustion using Aspen Plus was also developed to predict combustion performance of any coal during Oxy-FB. It was observed that the concentrations of CO and SO2 were higher in the lower dense region of the bed. These levels, however, dropped significantly with the introduction of secondary oxygen. The simulation results were consistent with the experimental data. Overall, this thesis has identified several important issues, for the first time, on Oxy-FB combustion using brown coal. The information generated is useful for academics, industry and policy makers. Future research on Oxy-FB combustion can use the findings of this study while developing Oxy-FB combustion for brown coals.
Book Synopsis Fluidization Engineering by : D. Kunii
Download or read book Fluidization Engineering written by D. Kunii and published by Elsevier. This book was released on 2013-10-22 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fluidization Engineering, Second Edition, expands on its original scope to encompass these new areas and introduces reactor models specifically for these contacting regimes. Completely revised and updated, it is essentially a new book. Its aim is to distill from the thousands of studies those particular developments that are pertinent for the engineer concerned with predictive methods, for the designer, and for the user and potential user of fluidized beds. Covers the recent advances in the field of fluidization. Presents the studies of developments necessary to the engineers, designers, and users of fluidized beds.
Book Synopsis Clean Coal and Sustainable Energy by : Junfu Lyu
Download or read book Clean Coal and Sustainable Energy written by Junfu Lyu and published by Springer Nature. This book was released on 2021-09-29 with total page 1091 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book gathers the proceedings of the 9th International Symposium on Coal Combustion, held in Qingdao, China in July 2019. It provides the latest research results on techniques for pulverized coal combustion and fluidized bed combustion, low-carbon energy and emission controls, and industrial applications. Highlighting research areas that are of great importance in promoting collaboration between related subjects and the technical development of coal-related fields, the book offers a valuable reference guide for researchers and engineers alike.
Book Synopsis Biomass Energy with Carbon Capture and Storage (BECCS) by : Clair Gough
Download or read book Biomass Energy with Carbon Capture and Storage (BECCS) written by Clair Gough and published by John Wiley & Sons. This book was released on 2018-09-24 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: An essential resource for understanding the potential role for biomass energy with carbon capture and storage in addressing climate change Biomass Energy with Carbon Capture and Storage (BECCS) offers a comprehensive review of the characteristics of BECCS technologies in relation to its various applications. The authors — a team of expert professionals — bring together in one volume the technical, scientific, social, economic and governance issues relating to the potential deployment of BECCS as a key approach to climate change mitigation. The text contains information on the current and future opportunities and constraints for biomass energy, explores the technologies involved in BECCS systems and the performance characteristics of a variety of technical systems. In addition, the text includes an examination of the role of BECCS in climate change mitigation, carbon accounting across the supply chain and policy frameworks. The authors also offer a review of the social and ethical aspects as well as the costs and economics of BECCS. This important text: Reveals the role BECCS could play in the transition to a low-carbon economy Discusses the wide variety of technical and non-technical constraints of BECCS Presents the basics of biomass energy systems Reviews the technical and engineering issues pertinent to BECCS Explores the societal implications of BECCS systems Written for academics and research professionals, Biomass Energy with Carbon Capture and Storage (BECCS) brings together in one volume the issues surrounding BECCS in an accessible and authoritative manner.
Book Synopsis Atmospheric Fluidized Bed Coal Combustion by : M. Valk
Download or read book Atmospheric Fluidized Bed Coal Combustion written by M. Valk and published by Elsevier Science & Technology. This book was released on 1995 with total page 490 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of fluidized bed coal combustion technology has been developed in the past decade in The Netherlands with a view to expanding the industrial use of coal as an energy supply. Various research groups from universities, institutes for applied science and from boiler industries participated and contributed to this research area. Comprehensive results of such recent experimentation and development work on atmospheric fluidized bed combustion of coal are covered in this volume. Each chapter, written by an expert, treats one specific subject and gives both the theoretical background as well as experimental results and verifications.Though the contents deal primarily with coal combustion, much information proved applicable and relevant for the combustion or incineration of other solid fuels and waste in a fluidized bed. Results of extended research and fundamental backgrounds are presented in order to provide the designer and operator of fluidized bed combustors with more complete and systematic information needed for an optimal design and operation. The design and operating experience of a full scale fluidized bed boiler are discussed and compared with the results of theoretical and experimental research on pilot plant scale.
Book Synopsis Thermal Power Plants by : Mohammad Rasul
Download or read book Thermal Power Plants written by Mohammad Rasul and published by BoD – Books on Demand. This book was released on 2013-04-17 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thermal power plants are one of the most important process industries for engineering professionals. Over the past decades, the power sector is facing a number of critical issues; however, the most fundamental challenge is meeting the growing power demand in sustainable and efficient ways. Practicing power plant engineers not only look after operation and maintenance of the plant, but, also look after range of activities including research and development, starting from power generation to environmental aspects of power plants. The book Thermal Power Plants - Advanced Applications introduces analysis of plant performance, energy efficiency, combustion, heat transfer, renewable power generation, catalytic reduction of dissolved oxygen and environmental aspects of combustion residues. This book addresses issues related to both coal fired and steam power plants. The book is suitable for both undergraduate and research higher degree students, and of course for practicing power plant engineers.
Book Synopsis Emission and Control of Trace Elements from Coal-Derived Gas Streams by : Yongchun Zhao
Download or read book Emission and Control of Trace Elements from Coal-Derived Gas Streams written by Yongchun Zhao and published by Woodhead Publishing. This book was released on 2019-07-12 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emission and Control of Trace Elements from Coal-Derived Gas Streams presents an up-to-date and focused analysis on Trace element (TEs) emissions and control strategies during coal utilization. This book provides insights into how TE’s in coal are distributed from different coal-forming periods, coal ranks and coal-bearing regions. As the emission and control of TEs during coal utilization are a significant concern, this book introduces TEs in coal and pollution in an accessible way before discussing why they occur and how they are distributed during various stages of coal forming, also considering various regions and countries. Specific types of TEs in relation to partition in coal combustion, coal fires, gasification and coal feed furnace are then analyzed, providing the reader with practical knowledge to apply to their own research or projects. This book is an essential reference for energy engineers researching and working in coal technology, with a specific focus on emission control, as well as graduate students and researchers in energy engineering, environmental, thermal and chemical engineering who have an interest in trace element emission and control from coal utilization. Presents characteristics of TE emissions during coal utilization in laboratory-scale experiments, industrial furnaces and power plants Considers different legislation and case studies from various regions and countries Includes contributions from world renowned experts Presents a concise and focused analysis on TE emissions and control strategies
Book Synopsis Proceedings of the 20th International Conference on Fluidized Bed Combustion by : Guangxi Yue
Download or read book Proceedings of the 20th International Conference on Fluidized Bed Combustion written by Guangxi Yue and published by Springer Science & Business Media. This book was released on 2010-07-28 with total page 1186 pages. Available in PDF, EPUB and Kindle. Book excerpt: The proceedings of the 20th International Conference on Fluidized Bed Combustion (FBC) collect 9 plenary lectures and 175 peer-reviewed technical papers presented in the conference held in Xi'an China in May 18-21,2009. The conference was the 20th conference in a series, covering the latest fundamental research results, as well as the application experience from pilot plants, demonstrations and industrial units regarding to the FBC science and technology. It was co-hosted by Tsinghua University, Southeast University, Zhejiang University, China Electricity Council and Chinese Machinery Industry Federation. A particular feature of the proceedings is the balance between the papers submitted by experts from industry and the papers submitted by academic researchers, aiming to bring academic knowledge to application as well as to define new areas for research. The authors of the proceedings are the most active researchers, technology developers, experienced and representative facility operators and manufacturers. They presented the latest research results, state-of-the-art development and projects, and the useful experience. The proceedings are divided into following sections: • CFB Boiler Technology, Operation and Design • Fundamental Research on Fluidization and Fluidized Combustion • C02 Capture and Chemical Looping • Gasification • Modeling and Simulation on FBC Technology • Environments and Pollutant Control • Sustainable Fuels The proceedings can be served as idea references for researchers, engineers, academia and graduate students, plant operators, boiler manufacturers, component suppliers, and technical managers who work on FBC fundamental research, technology development and industrial application.
Book Synopsis Particle Studies in the Lab and Pilot-scale Coal Combustion Systems by : Dishant Khatri
Download or read book Particle Studies in the Lab and Pilot-scale Coal Combustion Systems written by Dishant Khatri and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the past century, coal contributed more to the global electricity supply than any other source. Currently, it alone accounts for over 35% of the global electricity supply. Though coal is globally well-distributed and can provide cheap, stable, and reliable energy on demand, it emits a large amount of carbon dioxide--a greenhouse gas responsible for global warming. Additionally, it is a major source of particulate matter (PM) pollution. Thus, in recent years, to reduce the impact of coal on climate, several policies have been introduced to phase out coal. However, replacing coal with intermittent renewables has led to a reduction in the reliability of the electricity grid. To protect the electricity grid, dispatchable, low-carbon sources are required, which will largely come from sustainable, stable, and reliable fossil-fuel sources. Based on the projections from the International Energy Agency (IEA), coal will continue to be a major source of energy in the long term due to its abundance and competitively low prices. The need of the hour is to focus on addressing the key challenges of coal combustion by developing technologies for sustainable coal utilization. This approach will help in harnessing abundant and cheap coal resources without compromising the environment.This dissertation investigates two key pathways for sustainable coal combustion: Improvement in the understanding of fundamental coal combustion processes, and the development of new coal combustion technologies.In the first pathway, the fundamentals of coal combustion processes were investigated at a lab-scale level. The early-stage coal combustion processes such as submicron PM formation, and particle ignition were studied in controlled combustion environments, similar to those experienced by coal particles in near-burner regions of industrial coal combustors. In industrial coal combustors, the coal particles experience either oxidizing environments or reducing-to-oxidizing environments at different oxygen concentrations. Studies that mimic the industrial coal combustors in controlled lab-scale environments are rare. Thus, in order to fill the research gap, a two-stage Hencken burner was used in this study to simulate the practical coal combustion environments. Additionally, the instrumentation for a better understanding of submicron PM formation and particle temperatures were developed and calibrated. These studies provide valuable insights into optimizing advanced burner designs, in-flame control of PM formation, improving combustion efficiency, and heat transfer to boiler tubes.It was observed that ash evolution, soot formation, and soot oxidation are the governing processes for submicron PM evolution during the early stages of pulverized coal combustion. The submicron total PM and submicron soot PM are the first-order functions of ambient oxygen concentration and gas temperature, whereas submicron ash PM is the first-order function of coal particle temperature. In high-temperature environments, when particles undergo reducing-to-oxidizing transition, the critical factor for ignition is the presence of oxygen, not the amount of oxygen.In the second pathway, this dissertation presents the development of a dry-feed pressurized oxy-combustion pilot-scale combustor as well as a high pressure-high temperature particle sampler to demonstrate combustion characteristics of a promising future coal combustion technology - Staged Pressurized Oxy-Combustion (SPOC). The SPOC process, developed by Washington University in St. Louis, is an oxy-coal combustion technology that employs coal combustion at elevated pressure. The technology allows for carbon dioxide (CO2) capture rates of 90% or higher with significant improvements in efficiency and costs for sustainable coal utilization. The developed pressurized oxy-combustion pilot-scale combustor was used to examine pulverized coal flame stability and shape, coal particle flame temperature, char burnout, and submicron PM formation at SPOC design conditions. The understanding of these coal combustion characteristics is important for the commercialization of SPOC technology.The experiments establish that the pressurized oxy-combustion pilot-scale combustor has exceptionally good coal flame stability at SPOC design conditions. The coal particle flame temperatures are highest near the burner and decrease downstream of the combustor. Complete char combustion can be achieved with only 0.8 vol % oxygen mole fraction in the flue gas, compared with a minimal value of 2.5 vol % in conventional atmospheric pressure pulverized coal combustors. The number particle size distribution (PSD) of submicron PM exhibits two distinct modes, ultrafine and intermediate mode; however, with increasing residence time, the ultrafine mode peak decreases, and the intermediate mode peak values decline steadily and become stable.The experimental observations in this dissertation aim to complement the development of existing and future sustainable coal combustion technologies.
Book Synopsis Combustion Emissions by : Keith Schofield
Download or read book Combustion Emissions written by Keith Schofield and published by Academic Press. This book was released on 2020-01-10 with total page 613 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combustion Emissions: Formation, Reaction, and Removal of Trace Metals in Combustion Products presents the latest scientific knowledge on combustion, with a particular focus on the behavior of elements in this high temperature method of energy generation. The book describes methods of control and establishes a solid base of understanding for future research. Encyclopedic in style and consistent in format, each chapter systematically presents a complete analysis of the combustion behavior of each element and guides the reader in resolving specific problems. This includes source levels in fuels and fuel usage, emission and pollutant release into the environment and environmental effects, and more. Societal impacts and environmental concerns are considered throughout, highlighting sustainability aspects across a diverse range of applications, such as within power plants, automobiles and propulsion. Presents the latest research in a very systematic way Includes methods of control and establishes a base of understanding for future research in energy systems Analyzes the individual behavior of 34 elements, considering their chemistry, nature and environmental impacts
Book Synopsis Experimental Studies on the Capture of CO2, NOx and SO2 in the Oxygen/Recycled Flue Gas Coal Combustion System by : S. Miyamae
Download or read book Experimental Studies on the Capture of CO2, NOx and SO2 in the Oxygen/Recycled Flue Gas Coal Combustion System written by S. Miyamae and published by . This book was released on 1998 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
