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pulverized bituminous coal

The shape of pulverized bituminous vitrinite coal ...

The shape of pulverized bituminous coal particles (vitrinites) was determined by optical and laser light scattering. Vitrain samples were collected from obvious tree remains located in the ceilings of two Appalachian coal mines. Wet sieving produced narrow size cuts.

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[PDF] The Shape of Pulverized Bituminous Vitrinite

The shape of pulverized bituminous coal particles (vitrinites) was determined by optical and laser light scattering. Vitrain samples were collected from obvious tree remains located in the ceilings of two Appalachian coal mines. Wet sieving produced narrow size cuts. The particles were determined to be oblong or blocky in shape, with average length-to-width ratio of 1.7 and sphericity of 0.78.

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The Shape of Pulverized Bituminous Vitrinite Coal Particles

The shape of pulverized bituminous coal particles (vitrinites) was determined by optical and laser light scattering. Vitrain samples were collected from obvious tree remains located in the ceilings of two Appalachian coal mines. Wet sieving produced narrow size cuts. The particles were determined

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Ignition and devolatilization of pulverized bituminous ...

2007-1-1  Pittsburgh seam high-volatile bituminous coal was used in the experiments. The proximate analysis showed 0.8% w moisture, 8.8% w ash, 34.9% w volatiles and 55.6% w fixed carbon. The coal was sieved to a 106–125 μm size fraction.2.4. Gas and particle velocity

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Experimental and numerical study of pulverized

2011-4-20  An unsteady‐state model of a pulverized coal cloud including the submodels of radiation and convection was used to study the ignition characteristics of a Datong bituminous coal under the conditions of O 2 /N 2 and O 2 /CO 2 atmospheres.

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The structural changes of bituminous coal particles

1987-2-1  USA (Received 23 October 1985: revised 27 January 1986) The effect of the chemical composition of pulverized bituminous coal particles on their physical transformation during the initial stages of combustion has been investigated. The results suggested that cenosphere formation does not require extensive thermal decomposition of the coal particles.

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Ignition and devolatilization of pulverized bituminous ...

Abstract Oxygen/carbon dioxide recycle coal combustion is actively being investigated because of its potential to facilitate CO 2 sequestration and to achieve emission reductions. In the work reported here, the effect of enhanced oxygen levels and CO 2 bath gas is independently analyzed for their influence on single-particle pulverized coal ignition of a U.S. eastern bituminous coal.

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Distribution and Fate of Mercury in Pulverized

2016-2-16  Distribution and Fate of Mercury in Pulverized Bituminous Coal-Fired Power Plants in Coal Energy-Dominant Huainan City, China. Bingyu Chen 1,2, Guijian Liu 1,2 Ruoyu Sun ORCID: orcid.org/0000-0001-7261-8377 1 Archives of Environmental Contamination and Toxicology volume 70, pages 724–733 (2016)Cite this article

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One-Parameter Model for the Oxidation of Pulverized ...

2019-12-12  In this study, the oxidation of 22 bituminous coal chars is modeled with (i) an individual activation energy for each char and (ii) constant activation energy for all the chars. Modeled burnout profiles, from 0 to 75% of burnout, are compared to experimental measurements from a 4 m isothermal plug flow reactor operating at temperatures and heating rates typical of pulverized fuel industrial

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Experimental investigation of the initial stages of ...

OSTI.GOV Thesis/Dissertation: Experimental investigation of the initial stages of pulverized bituminous coal combustion

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The Shape of Pulverized Bituminous Vitrinite Coal Particles

The shape of pulverized bituminous coal particles (vitrinites) was determined by optical and laser light scattering. Vitrain samples were collected from obvious tree remains located in the ceilings of two Appalachian coal mines. Wet sieving produced narrow size cuts. The particles were determined

Read More
Ignition and devolatilization of pulverized bituminous ...

2006-8-1  In the work reported here, the effect of enhanced oxygen levels and CO{sub 2} bath gas is independently analyzed for their influence on single-particle pulverized coal ignition of a U.S. eastern bituminous coal.

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Experimental and numerical study of pulverized

2011-4-20  An unsteady‐state model of a pulverized coal cloud including the submodels of radiation and convection was used to study the ignition characteristics of a Datong bituminous coal under the conditions of O 2 /N 2 and O 2 /CO 2 atmospheres. An increase in the ignition temperature was calculated for the bituminous coal when air (21% O 2 + 79% N 2) was replaced with a mixture of 21%

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Experimental and numerical study of pulverized

2012-7-1  ABSTRACT An unsteady‐state model of a pulverized coal cloud including the submodels of radiation and convection was used to study the ignition characteristics of a Datong bituminous coal under the conditions of O2/N2 and O2/CO2 atmospheres. An increase in the ignition temperature was calculated for the bituminous coal when air (21% O2 + 79% N2) was replaced with a mixture of 21%

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Advanced Oxy-combustion Technology for Pulverized ...

2017-10-27  @article{osti_1560803, title = {Advanced Oxy-combustion Technology for Pulverized Bituminous Coal Power Plants}, author = {Iyengar, Arun and Kuehn, Norma and Shah, Vasant and Turner, Marc J and Woods, Mark and Keairns, Dale}, abstractNote = {The main objective of this study is to examine atmospheric pressure oxy-combustion technology options that have the largest potential to

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Ignition and devolatilization of pulverized bituminous ...

Abstract Oxygen/carbon dioxide recycle coal combustion is actively being investigated because of its potential to facilitate CO 2 sequestration and to achieve emission reductions. In the work reported here, the effect of enhanced oxygen levels and CO 2 bath gas is independently analyzed for their influence on single-particle pulverized coal ignition of a U.S. eastern bituminous coal.

Read More
(PDF) One-Parameter Model for the Oxidation of

One-Parameter Model for the Oxidation of Pulverized Bituminous Coal Chars. Leonardo Tognotti. Anders Brink. Mikko Hupa. Leonardo Tognotti. Anders Brink. Mikko Hupa. Related Papers. Multivariable optimization of reaction order and kinetic parameters for high temperature oxidation of 10 bituminous coal

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Distribution and Fate of Mercury in Pulverized

2016-2-16  Read "Distribution and Fate of Mercury in Pulverized Bituminous Coal-Fired Power Plants in Coal Energy-Dominant Huainan City, China, Archives of Environmental Contamination and Toxicology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

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One-Parameter Model for the Oxidation of Pulverized ...

2019-12-12  In this study, the oxidation of 22 bituminous coal chars is modeled with (i) an individual activation energy for each char and (ii) constant activation energy for all the chars. Modeled burnout profiles, from 0 to 75% of burnout, are compared to experimental measurements from a 4 m isothermal plug flow reactor operating at temperatures and heating rates typical of pulverized fuel industrial ...

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The Shape of Pulverized Bituminous Vitrinite Coal Particles

The shape of pulverized bituminous coal particles (vitrinites) was determined by optical and laser light scattering. Vitrain samples were collected from obvious tree remains located in the ceilings of two Appalachian coal mines. Wet sieving produced narrow size cuts. The particles were determined

Read More
The Shape of Pulverized Bituminous Vitrinite Coal ...

The shape of pulverized bituminous coal particles (vitrinites) was determined by optical and laser light scattering. Vitrain samples were collected from... DOAJ is a community-curated online directory that indexes and provides access to high quality, open access, peer-reviewed journals.

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Ignition and devolatilization of pulverized bituminous ...

Abstract Oxygen/carbon dioxide recycle coal combustion is actively being investigated because of its potential to facilitate CO 2 sequestration and to achieve emission reductions. In the work reported here, the effect of enhanced oxygen levels and CO 2 bath gas is independently analyzed for their influence on single-particle pulverized coal ignition of a U.S. eastern bituminous coal.

Read More
Experimental and numerical study of pulverized

2012-7-1  ABSTRACT An unsteady‐state model of a pulverized coal cloud including the submodels of radiation and convection was used to study the ignition characteristics of a Datong bituminous coal under the conditions of O2/N2 and O2/CO2 atmospheres. An increase in the ignition temperature was calculated for the bituminous coal when air (21% O2 + 79% N2) was replaced with a mixture of 21%

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Applicability of the mixture of bituminous coal and ...

1994-12-31  Abstract. In some future, it is expected for Japanese power stations to be hard to get a high-grade coal like a bituminous coal. We conducted therefore pilot scale tests of pulverized blends of bituminous coal and anthracite using a 1.2MWt tunnel furnace in order to evaluate the applicability of the blends of bituminous coal and anthracite to conventional pulverized coal firing boilers.

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(PDF) One-Parameter Model for the Oxidation of

One-Parameter Model for the Oxidation of Pulverized Bituminous Coal Chars. Leonardo Tognotti. Anders Brink. Mikko Hupa. Leonardo Tognotti. Anders Brink. Mikko Hupa. Related Papers. Multivariable optimization of reaction order and kinetic parameters for high temperature oxidation of 10 bituminous coal

Read More
Distribution and Fate of Mercury in Pulverized

2016-2-16  Read "Distribution and Fate of Mercury in Pulverized Bituminous Coal-Fired Power Plants in Coal Energy-Dominant Huainan City, China, Archives of Environmental Contamination and Toxicology" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

Read More
The structural changes of bituminous coal particles

Abstract The effect of the chemical composition of pulverized bituminous coal particles on their physical transformation during the initial stages of combustion has been investigated. The results suggested that cenosphere formation does not require extensive thermal decomposition of the coal particles. The vitrinites in the bituminous coal softened earlier and developed larger cenospheres than ...

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Distribution and Fate of Mercury in Pulverized Bituminous ...

论文编号: 107 论文题目: Distribution and Fate of Mercury in Pulverized Bituminous Coal-Fired Power Plants in Coal Energy-Dominant Huainan City, China 英文论文题目: Distribution and Fate of Mercury in Pulverized Bituminous Coal-Fired Power Plants in Coal

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One-Parameter Model for the Oxidation of Pulverized ...

2012-1-27  In this study, the oxidation of 22 bituminous coal chars is modeled with (i) an individual activation energy for each char and (ii) constant activation energy for all the chars. Modeled burnout profiles, from 0 to 75% of burnout, are compared to experimental measurements from a 4 m isothermal plug flow reactor operating at temperatures and heating rates typical of pulverized fuel industrial ...

Read More