Download or read book A Modeling Study on Fuel nitrogen Conversion to NO and N2O N Tief 2O Related to Fluidized Bed Combustion written by Gerhard Löffler and published by . This book was released on 2001 with total page 698 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental Study on Fuel nitrogen Conversion to NO and N2O and on Carbon Conversion Under Fluidized Bed Conditions written by Christian Wartha and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NO subscript X Reduction in Pressurized Fluidized bed Combustion written by and published by . This book was released on 1992 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: Batch combustion experiments were performed in a small bubbling fluidized-bed reactor with the objective of establishing the cause of reduced NO(subscript x) emissions from pressurized fluidized bed combustion (PFBC). All variables except for pressure were kept constant in the experiments: fuel batch size, for example, was the same in experiments performed at three pressure levels (0.2, 1 and 2 MPa). Two different types of experiments were conducted: one using air diluted with nitrogen (4.5% O2) for the purpose of determining the conversion of fuel N to NO(subscript x), and the other with NO-doped diluted air (800 ppM NO, 4.5% O2) for the purpose of determining the reduction of bulk-gas NO(subscript x) by the burning fuel. A large excess of combustion air was used in all experiments so as to keep the bulk-gas composition relatively unchanged by combustion products. Six different fuels were studied: a bituminous coal, coke prepared from the same coal, three specialty cokes (one of which contained 10 wt % N) and graphite (0%N). The straight-air combustion experiments showed that the conversion of fuel-N to NO(subscript x) dropped with increasing pressure (at constant fuel concentration in the bed). The NO-doped combustion experiments showed significantly increased NO(subscript x) reduction with increased pressure. This effect was particularly strong between 0.2 and 1 MPa, and was found to continue between 1 and 2 MPa for some of the fuels but too saturate for others. These results imply that an important phenomenon for low PFBC NO(subscript x) emission is the reaction of NO(subscript x) with reducing N-containing species at the burning fuel surfaces. A simple kinetic model involving parallel paths for the fuel-N is suggested as an interpretation of the results. The NO-doped experiments showed increased N2O formation relative to the straight-air experiments implying that N2O was a byproduct of the NO(subscript x) reduction reaction where N2 was the main product.
Download or read book Fuel N Conversion to NO N2O and N2 During Coal Combustion written by Stanisław Gil and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Fuel-N Conversion to NO, N2O and N2 During Coal Combustion.
Download or read book Pressurized fluidized bed combustion written by National Research Development Corporation and published by . This book was released on 1976 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pressurised Fluidised Bed Combustion written by National Research Development Corporation and published by . This book was released on 1974 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Combustion of No 2 Fuel Oil in a Shallow Atmospheric Fluidized Bed Combustor written by Manas G. Roy and published by . This book was released on 1985 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fluidized Bed Combustion written by Battelle Memorial Institute. Columbus Laboratories and published by . This book was released on 1978 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Industrial application of fluidized bed combustion written by Georgetown University and published by . This book was released on 1977 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fluidised Bed Combustion written by NCB Coal Utilisation Research Laboratory and published by . This book was released on 1980 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fluidized Bed Combustion of Carbons and Reduction of NO x and N2O written by M. S. Parmar and published by . This book was released on 1995 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Single Fuel Particle and NOxx N2O emission Characteristics Under circulating Fluidized Bed Combustor Conditions written by Franz Winter and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book An Experimental and Kinetic Calculation of the Promotion Effect of Hydrocarbons on the NO NO2 Conversion in a Flow Reacto written by and published by . This book was released on 1998 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The main route to nitrogen dioxide (NOz) formation in combustion systems is through the oxidation of nitric oxide (NO). This process was originally invcstigafed in order to explain the high proportion of NOz found in NOx emissions from the exhaust of gas turbine engines [l]. Moreover, the understanding of the NO-NO2 conversion mechanism is relevant to a number of issues including NOz emission from unflued space heaters, development of NOx control technologies, behavior of NO/N02 in the atmosphere, formation and reduction chemistry of NOx, and the probe sampling techniques for NOx concentration measurements. Originally, the NO-NO2 conversion was thought to proceed through the rapid oxidation of NO by oxidative radicals without much attention to the effect of fuels on the conversion [2-41. Although, in later studies, it was revealed that the conversion was greatly promoted by small quantities of fuels such as hydrocarbons, Hz, CO, and methanol [S-9]. In our former experiment and model calculation of the NO-NO2 conversion in the mixing of hot combustion gas with cold air and nine different fuels [6], the results indicated that NO-NO2 conversion appeared only in the low temperature range, and showed a strong dependence on fuel type. Thus, the interaction between the NO-NO2 reactions and the oxidation reactions of the fuel in the low temperature range must be .understood in order to explain the effect of fuel type on the NO-NO2 conversion and consequently to predict the NO/NO2 emission levels from combustion systems.
Download or read book Experimental Studies of Gas phase Nitrogen Reactions in Conditions Relevant to Fluidized Bed Combustion written by Kamal Chowdhury and published by . This book was released on 1995 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on Minimizing the Conversion of Fuel Bound Nitrogen to NOx written by Clement Jung-Min Sung and published by . This book was released on 1982 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reduction of the N2O Emission from Fluidized Bed Combustion by Afterburning written by Lennart Gustavsson and published by . This book was released on 1995 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Three dimensional Modeling of Circulating Fluidized Bed Combustion written by Thomas C. C. Knöbig and published by . This book was released on 1998 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt:
