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Combustion Properties Of Coal Char Blends
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Book Synopsis Combustion Properties of Coal-char Blends by :
Download or read book Combustion Properties of Coal-char Blends written by and published by . This book was released on 1993 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tests under pulverized coal combustion conditions suggest that NO(subscript x) formed during release of volatile matter far exceed NO(subscript x) formed during combustion of the resulting char. This is attributed to char/NO(subscript x) interactions by both direct reduction of NO, by carbon and char-catalyzed reduction by CO. This implies combustion of char not only produces substantially lower No(subscript x) but the presence of char in the flame during initial stages of combustion may potentially provide catalytic activity for reduction of NO(subscript x) produced from volatile nitrogen. The goal of the project is to determine if the concept of NO(subscript x) reduction by char/NO(subscript x) interactions, while maintaining a high combustion efficiency by co-firing coal with char, is a technically feasible way to reduce NO(subscript x) emissions. Char samples will be prepared in a continuous rotary tube kiln under mild gasification conditions. Combustion testing will be conducted with the coal and coal-char blends in a combustor located at BYU. The effect of coal/char ratio, formation characteristics, ignition characteristics, flame stability, and combustion efficiency will be determined. Physical and chemical properties of the fuels will be measured to help explain combustion and emission characteristics of fuels.
Book Synopsis Structure and Properties of Various Coal Chars by : W. O. Stacy
Download or read book Structure and Properties of Various Coal Chars written by W. O. Stacy and published by . This book was released on 1972 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Combustion Properties of Coal-char Blends by :
Download or read book Combustion Properties of Coal-char Blends written by and published by . This book was released on 1993 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Under pulverized coal combustion conditions, NO(subscript x) formed during the release of volatile matter far exceed NO(subscript x) formed from combustion of the resulting char. It is believed that interactions of NO(subscript x) with char is responsible for the reduced NO(subscript x) formation from the combustion of char. The goal of this research is to assess the potential technical and economical benefits of co-firing coal-char blends in pulverized coal boilers to reduce NO(subscript x). The rationale for the proposed research is that the presence of char in the flame during the initial stages of combustion may provide catalytic activity for reduction of NO(subscript x) produced from volatile nitrogen. This project is a cooperative effort between the Illinois State Geological Survey (ISGS) and BYU/ACERC. Seven hundred and fifty pounds of three coal-char blends containing 12.5%, 25%, and 50% char and 125 pounds of a coal-activated carbon blend containing 12.5% activated carbon were prepared. The volatile matter contents of the blends ranged from 27.3 to 35.6% (dry basis). Char (16.2 wt% volatile matter) was made from an Illinois No. 6 coal (Peabody Coal Company) in a continuous feed charring oven under mild gasification conditions. Nine combustion tests will be performed with the coal and blends in a 0.5--1.0 MBtu/hr combustor located at BYU. Combustion data will be analyzed to determine the effect of blend type, stoichiometry, and flame temperature on NO(subscript x) formation, ignition characteristics, flame stability, and combustion efficiency. A four month no-cost extension has been requested for the project. The results of the combustion tests will be reported in the final technical report in December 1993.
Book Synopsis Combustion Characteristics and Physical Properties of Packaged Fuels Containing Bituminous Coal by : James W. Meyer
Download or read book Combustion Characteristics and Physical Properties of Packaged Fuels Containing Bituminous Coal written by James W. Meyer and published by . This book was released on 1951 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Combustion Properties of Coal-char Blends by :
Download or read book Combustion Properties of Coal-char Blends written by and published by . This book was released on 1993 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tests under pulverized coal combustion conditions suggest that NO(subscript x) formed during release of volatile matter far exceed NO(subscript x) formed during combustion of the resulting char. This is attributed to char/NO(subscript x) interactions by both direct reduction of NO(subscript x) by carbon and char-catalyzed reduction by CO. This implies combustion of char not only produces substantially lower NO(subscript x) but the presence of char in the flame during initial stages of combustion may potentially provide catalytic activity for reduction of NO(subscript x) produced from volatile nitrogen. The goal of the project is to determine if the concept of NO(subscript x) reduction by char/NO(subscript x) interactions, while maintaining a high combustion efficiency by co-firing coal with char, is a technically feasible way to reduce NO(subscript x), emissions. The project will provide important combustion data required to establish the feasibility of utilizing chars in industrial combustion applications and the advantages of burning coal-char blends in reducing NO(subscript x) and SO2 emissions. During the reporting period, 19 runs were made with a continuous feed charring oven (CFCO) to produce 237 pounds of char(about 16%vm) required for preparing coal-char blends.
Book Synopsis NOx Emission Characteristics in the Combustion of Coal-char Blends by : John T. Daines
Download or read book NOx Emission Characteristics in the Combustion of Coal-char Blends written by John T. Daines and published by . This book was released on 1996 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Krankenkasse für den Kanton Bern by :
Download or read book Krankenkasse für den Kanton Bern written by and published by . This book was released on 1912 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Combustion Characteristics of Pulverised Coal and Softwood Blends by : Chatphol Meesri
Download or read book Combustion Characteristics of Pulverised Coal and Softwood Blends written by Chatphol Meesri and published by . This book was released on 2003 with total page 21 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis How Coal Properties Influence Emissions by : Robert M. Davidson
Download or read book How Coal Properties Influence Emissions written by Robert M. Davidson and published by . This book was released on 2000 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Coal Properties on the Fluidized Bed Combustion Effiency of Single Coals and Blends by : J. M. Vleeskens
Download or read book Effect of Coal Properties on the Fluidized Bed Combustion Effiency of Single Coals and Blends written by J. M. Vleeskens and published by . This book was released on 1983 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Inhibition of Spontaneous Combustion of Coal by : Alex C. Smith
Download or read book Inhibition of Spontaneous Combustion of Coal written by Alex C. Smith and published by . This book was released on 1988 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pulverized Coal Combustion by : Stanley Singer
Download or read book Pulverized Coal Combustion written by Stanley Singer and published by William Andrew. This book was released on 1984 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effect of Coal Properties on the Fluidized Bed Combustion Effiency of Single Coals and Blends by :
Download or read book Effect of Coal Properties on the Fluidized Bed Combustion Effiency of Single Coals and Blends written by and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Pulverized-Coal Combustion and Gasification by : L. Smoot
Download or read book Pulverized-Coal Combustion and Gasification written by L. Smoot and published by Springer Science & Business Media. This book was released on 2013-04-17 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: viii and approaches could be adapted to other coal conversion and combustion problems, we have not considered combustion or gasification in fluidized or fixed beds or in situ processes. In addition, we have not considered other fossil-fuel combustion problems associated with oil shale, tar sands, etc., even though many aspects of pulverized-coal combustion would relate to these problems. For the case of pulverized-coal models, we have attempted to provide a detailed description of the model foundations. Parts I and II of this book emphasize general principles for describing reacting, turbulent or laminar, multiphase systems. General conservation equations are developed and summarized. The basis for computing thermochemical equilibrium in complex, heterogeneous mixtures is presented, together with techniques for rapid computation and reference to required input data. Rate processes are then discussed, including pertinent aspects of turbulence, chemical kinetics, radiative heat transfer, and gas-particle convective-diffusive interactions. Much of Part II deals with parameters and coefficients for describing these complex rate processes. This part of the book provides recommended values of coefficients and parameters for treating complex reacting flows. Parts I and II may well be suitable for use in an advanced course in reacting flows, and have been written partly with that in mind. Part III deals with more specific aspects of pulverized-coal characteristics and rate processes. Following a general description of coal structure and constitution, coal pyrolysis and char oxidation processes are considered.
Download or read book Coal Combustion written by and published by . This book was released on 1991 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: The project will quantify the effect of the following pyrolysis conditions on the macropore structure and on the subsequent reactivity of chars: (a) pyrolysis heating rate; (b) final heat treatment temperature (HTT); (c) duration of heat treatment at HTT (or soak time); (d) pyrolysis atmosphere (N2 or O2/N2 mixtures); (e) coal particle size (100 - 1000?m in diameter); (f) sulfur-capturing additives (limestone); and (g) coal rank. Pyrolysis experiments will be carried out for three coals from the Argonne collection: (1) a high-volatile bituminous coal with high ash content (Illinois {number sign}6), (2) a bituminous coal with low ash content (Utah Blind Canyon) and (3) a lower rank subbituminous coal (Wyodak-Anderson seam).
Book Synopsis Combustion of Coal Blends by : Nadine Spitz Beigelman
Download or read book Combustion of Coal Blends written by Nadine Spitz Beigelman and published by . This book was released on 2006 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Fundamental Study on Combustion Characteristics of Pulverised Coal/softwood Blends by : Chatphol Meesri
Download or read book A Fundamental Study on Combustion Characteristics of Pulverised Coal/softwood Blends written by Chatphol Meesri and published by . This book was released on 2003 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:
