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No X N2o So2 Reduction In Fluidised Bed Combustion Of Coal Andchar
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Book Synopsis NOx/N2O/SO2 reduction in fluidised bed combustion of coal and char by : D. G. Gavin
Download or read book NOx/N2O/SO2 reduction in fluidised bed combustion of coal and char written by D. G. Gavin and published by . This book was released on 1994 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Energy Technology Support Unit (ETSU), Harwell (GB). Coal R & D Programme Publisher : ISBN 13 : Total Pages :4 pages Book Rating :4.:/5 (811 download)
Book Synopsis Reduction of NO ̲x, N2O and SO2 in the Fluidised Bed Combustion of Coal and Char by : Energy Technology Support Unit (ETSU), Harwell (GB). Coal R & D Programme
Download or read book Reduction of NO ̲x, N2O and SO2 in the Fluidised Bed Combustion of Coal and Char written by Energy Technology Support Unit (ETSU), Harwell (GB). Coal R & D Programme and published by . This book was released on 1995 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NO ̲x/N2O/SO2 Reduction in Fluidised Bed Combustion of Coal And*char by : D Gavin
Download or read book NO ̲x/N2O/SO2 Reduction in Fluidised Bed Combustion of Coal And*char written by D Gavin and published by . This book was released on 1994 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis NOx/N20/SO2 Reduction in Fluidised Bed Combustion of Coal and Char by : D. G. Gavin
Download or read book NOx/N20/SO2 Reduction in Fluidised Bed Combustion of Coal and Char written by D. G. Gavin and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Emissions of N2O and NOx from Fluidized Bed Combustion of Coal by : Mu Lin
Download or read book Emissions of N2O and NOx from Fluidized Bed Combustion of Coal written by Mu Lin and published by . This book was released on 1998 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interactions Between So2 and NOx Emissions in Fluidised Bed Combustion of Coal by : Weigang Lin
Download or read book Interactions Between So2 and NOx Emissions in Fluidised Bed Combustion of Coal written by Weigang Lin and published by . This book was released on 1994 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Plan for the Union of British North America and the United States, 1866 by : Theodore Christian Blegen
Download or read book A Plan for the Union of British North America and the United States, 1866 written by Theodore Christian Blegen and published by . This book was released on 1918 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 18th International Conference on Fluidized Bed Combustion--2005 by :
Download or read book Proceedings of the 18th International Conference on Fluidized Bed Combustion--2005 written by and published by . This book was released on 2005 with total page 968 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Emissions of N2O and NO from Single Particles of Coal Under Fluidising Bed Combustion Conditions by : Claes J. Tullin
Download or read book Emissions of N2O and NO from Single Particles of Coal Under Fluidising Bed Combustion Conditions written by Claes J. Tullin and published by . This book was released on 1995 with total page 97 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Institute of Energy's Second International Conference on COMBUSTION & EMISSIONS CONTROL by : The Institute of Energy
Download or read book The Institute of Energy's Second International Conference on COMBUSTION & EMISSIONS CONTROL written by The Institute of Energy and published by Elsevier. This book was released on 2013-10-22 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: Approx.410 pages
Book Synopsis Modeling and Simulation of SOx and NOx Reduction Processes in Pulverized Coal Furnaces by :
Download or read book Modeling and Simulation of SOx and NOx Reduction Processes in Pulverized Coal Furnaces written by and published by Cuvillier Verlag. This book was released on 2003-12-18 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT The current work briefly reviews the formation mechanisms and reduction approaches of the pollutants SOx and NOx in coal combustion and focuses on the simulation of the lower-cost in-furnace measures ƒ{ the dry additive process (DAP) for SOx reduction and the reburning as well as the advanced reburning (hybrid reburning/SNCR) techniques for NOx reduction. In addition, the influence of sulfur compounds on NOx formation is investigated. The major workings include: Simulation of the dry additive desulfurization process (DAP): Different models ƒ{ shrinking core model (SCM), pore model (PM) and grain model (GM) ƒ{ are implemented to describe the gas-particle reaction. Relevant processes such as the sintering of the additive, the self-retention by coal ash, the thermal equilibrium of the sulfation reaction are accounted for and modeled. A comprehensive model for the DAP with calcium based additives is subsequently established and integrated into a combustion CFD (computational fluid dynamics) code AIOLOS, in both Eulerian and Lagrangian schemes. The model is verified with experiments on a test reactor. Mechanism reduction and simulation of reburning/SNCR Processes: A method for reduction of kinetic mechanisms is introduced. A program tool is developed for automatic reduction of detailed reaction mechanisms. Reduced mechanisms for reburning and hybrid reburning/SNCR processes are developed and implemented into the CFD code. CFD-calculations with the reduced mechanisms are performed and compared with experimental measurements to comprehensively evaluate the simulation approach. It is shown that the detailed simulation is capable of modeling the complex reburning and SNCR processes with acceptable computing time and achieves reasonable results in wide parameter ranges. Study of the influence of sulfur compounds on NOx formation: The effect of SO2 on NOx formation is experimentally investigated and analysed with kinetic mechanisms. It is indicated that the presence of SO2 inhabits the NOx formation and reduce the NOx emissions in normal air-rich combustion. Under air-staging conditions, SO2 addition has no obvious influence on the final NOx emissions.
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 Evaluation of Simultaneous SO2/NOX Control Technology by : Kevin R. Bruce
Download or read book Evaluation of Simultaneous SO2/NOX Control Technology written by Kevin R. Bruce and published by . This book was released on 1993 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Clean Air Act Amendments of 1990 (CAAA) have led to accelerated research into novel sulfur dioxide (SO2) and nitrogen oxide (NOx) control technologies for coal-fired industrial boilers. One of these technologies combines sorbent injection and selective non-catalytic reduction for simultaneous SO2/NOx removal. The work presented herein concentrated on characterizing three process operational parameters of this technology: injection temperature, sorbent type, and reductant/pollutant stoichiometric ratio. A slurry composed of a urea-based solution (NOx OUT A or NOx OUT A+) and various calcium-(Ca-) based sorbents was injected at a range of temperatures and reactant/pollutant stoichiometries in a natural-gas-fired, pilot-scale reactor with doped pollutants. Up to 80% reduction of SO2 and NOx at reactant/pollutant stoichiometric ratios of 2 and 1.5, respectively, was achieved. SO2 emission reductions from slurry injection were enhanced moderately when compared with dry sorbent injection methods, possibly caused by sorbent fracturing to smaller, more reactive particles. Emissions from ammonia (NH3) slip (unreacted nitrogen-based reducing agent) and nitrous oxide (N2O) formation were reduced in comparison with other published results, while similar NOx reductions were obtained. increased carbon monoxide (CO) emissions, caused by the decomposition of urea, were moderate. Emissions of CO, NH3, and N2O for the enhanced urea solution (NOx OUT A+) were substantially less than the levels observed during urea (NOx OUT A) injection. The injection of the urea-based solution enhanced SO2 removal, probably because of the formation of (NH4)2CA(SO4)2 H2O. The results of this pilot-scale study have shown high reduction of both SO2 and NOx.
Author :Energy Technology Support Unit (ETSU), Harwell (GB). Coal R and D Programme Publisher : ISBN 13 : Total Pages :2 pages Book Rating :4.:/5 (81 download)
Book Synopsis Strategies for Reduction of Nitrous Oxide Emissions from Combustion of Coal in a Circulating Fluidised Bed by : Energy Technology Support Unit (ETSU), Harwell (GB). Coal R and D Programme
Download or read book Strategies for Reduction of Nitrous Oxide Emissions from Combustion of Coal in a Circulating Fluidised Bed written by Energy Technology Support Unit (ETSU), Harwell (GB). Coal R and D Programme and published by . This book was released on 1999 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Strategies for Reduction of Nitrous Oxide Emission from Combustion of Coal in a Circulating Fluidised Bed by : Harwell Laboratory. Energy Technology Support Unit
Download or read book Strategies for Reduction of Nitrous Oxide Emission from Combustion of Coal in a Circulating Fluidised Bed written by Harwell Laboratory. Energy Technology Support Unit and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interactions between SO2 [SO] emissions in fluidised bed combustion of coal by : Weigang Lin
Download or read book Interactions between SO2 [SO] emissions in fluidised bed combustion of coal written by Weigang Lin and published by . This book was released on 1994 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: