Formation of NOx and Other Products from Chemically Bound Nitrogen in Coal Combustion PDF Download
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Author: David W. Blair
Publisher:
ISBN:
Category : Coal
Languages : en
Pages : 288
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Author: David W. Blair
Publisher:
ISBN:
Category : Coal
Languages : en
Pages : 288
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Author:
Publisher: DIANE Publishing
ISBN: 1428902805
Category :
Languages : en
Pages : 57
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![Nitrogen Oxide Formation from Chemically-bound Nitrogen During the Combustion of Fossil Fuels. [Extended Zeldovich Reactions]. PDF](https://books.google.com/books/content/images/frontcover/phmlwgEACAAJ?fife=w80-h100)
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
One of the many problems associated with the firing of fossil fuels is the impact on the ambient levels of nitrogen oxides. Since the use of coals, oils and coal-derived fuels is expected to triple by 1985, it is urgent that the formation of nitrogen oxides from molecular nitrogen and organo-nitrogen species be fully characterized so that emission abatement strategies can be formulated. The thermal fixation of atmospheric nitrogen and the free radical reactions of nitrogenous species are the sources of NO3 The fixation reactions can be described by the extended Zeldovich mechanism, and techniques such as staged combustion and flue gas recirculation have been employed to reduce combustion temperatures and, hence, thermally formed NO. These techniques have had little effect, however, on the conversion of chemically-bound nitrogen to NO3 The fate of chemically-bound nitrogen depends upon such factors as the nitrogen content of the fuel and the equivalence ratio and upon the physical processes governing combustion. Research is proposed to establish the kinetic processes involved in the conversion of fuel nitrogen to NO and N2 in environments characteristic of fossil fuel combustion and to identify those conditions which favor the reduction of NO to N2.
Author: R. E. Mitchell
Publisher:
ISBN:
Category : Combustion gases
Languages : en
Pages : 50
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Author: United States. Office of the Assistant Secretary for Fossil Energy
Publisher:
ISBN:
Category : Fossil fuels
Languages : en
Pages : 658
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Author:
Publisher:
ISBN:
Category : Acid precipitation (Meteorology)
Languages : en
Pages : 744
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Author: Timothy C. Lieuwen
Publisher: Cambridge University Press
ISBN: 052176405X
Category : Science
Languages : en
Pages : 385
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Book Description
The development of clean, sustainable energy systems is a preeminent issue in our time. Gas turbines will continue to be important combustion-based energy conversion devices for many decades to come, used for aircraft propulsion, ground-based power generation, and mechanical-drive applications. This book compiles the key scientific and technological knowledge associated with gas turbine emissions into a single authoritative source.
Author:
Publisher:
ISBN:
Category : Environmental engineering
Languages : en
Pages : 704
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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The production and removal of Nox and other combustion products during fossil fuel combustion is a serious environmental problem for both stationary and mobile energy systems. Since stationary systems are faced with increased utilization of coal, oil shale, or synthetic fuel oils, all of which have significant levels of fuel-bound nitrogen, NOx formation may become acute. Recent studies of the production of NOx due to oxidation of fuel nitrogen indicate that a critical role is played by the interaction of NH/sub i/ (i = 1,2,3) species with NO, O2, OH, and H. In fact, these reactions play a vital role in the homogeneous removal of NOx from combustion exhaust streams upon addition of NH3 or NH3-like compounds. Over the past two years, there has been an increased understanding of the chemistry of the NH/sub i//NOx system at combustor exhaust temperatures. For an ammonia addition system to be effective in reducing NO/sub x/ emissions, it must work successfully in the presence of a variety of sulfur-bearing compounds present in the products of combusted coal and oil shale. The work in progress has three major objectives. The first objective is to determine whether the reactions of SO2 (the predominant sulfur-bearing compound present) + NH/sub i/ (i = 1,2,3) directly produce NO/sub x/ in the temperature range of 300 to 1500 K. Depending on the products and value of these rate constants, the effectiveness of NO removal by NH3 could be dramatically affected. The second objective is to screen and evaluate various sulfur-containing scavenger precursors such as SO, SO2, HS, and H2S to assess their impact on the NH/sub i//NO/sub x/ chemical system.
Author:
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ISBN:
Category : Power resources
Languages : en
Pages : 1044
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