Evidence of the rich flammability limit for pulverized pittsburgh seam coal-air mixtures

Scott E. Slezak; Richard O. Buckius; Herman Krier

doi:10.1016/0010-2180(86)90121-5

Evidence of the rich flammability limit for pulverized pittsburgh seam coal-air mixtures

Scott E. Slezak, Richard O. Buckius, Herman Krier

Mechanical Science and Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

Evidence for a rich flammability limit is presented for pulverized Pittsburgh seam coal (36% volatiles, 56.1% fixed carbon, 50 μm mass mean particle diameter). Experiments were conducted in a large (0.3 m diam by 4.5 m long) horizontal tube that generated a vertical dust concentration gradient for the rich mixtures. Horizontally propagating steady state flames were observed only in regions where the concentration was below 1.5 kg/m³. When the location where the dust concentration exceeded 1.5 kg/m³ was varied, the edge of the visible flame front moved accordingly. This is interpreted as evidence for a rich limit of 1.5 kg/m³ for this coal.

Original language	English (US)
Pages (from-to)	209-215
Number of pages	7
Journal	Combustion and Flame
Volume	63
Issue number	1-2
DOIs	https://doi.org/10.1016/0010-2180(86)90121-5
State	Published - 1986

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Fuel Technology
Energy Engineering and Power Technology
General Physics and Astronomy

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10.1016/0010-2180(86)90121-5

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title = "Evidence of the rich flammability limit for pulverized pittsburgh seam coal-air mixtures",

abstract = "Evidence for a rich flammability limit is presented for pulverized Pittsburgh seam coal (36% volatiles, 56.1% fixed carbon, 50 μm mass mean particle diameter). Experiments were conducted in a large (0.3 m diam by 4.5 m long) horizontal tube that generated a vertical dust concentration gradient for the rich mixtures. Horizontally propagating steady state flames were observed only in regions where the concentration was below 1.5 kg/m3. When the location where the dust concentration exceeded 1.5 kg/m3 was varied, the edge of the visible flame front moved accordingly. This is interpreted as evidence for a rich limit of 1.5 kg/m3 for this coal.",

author = "Slezak, {Scott E.} and Buckius, {Richard O.} and Herman Krier",

note = "Funding Information: This work was supported, in part, by the National Science Foundation under Contract NSF 77-26973 and the Center for Research on Sulfur in Coal (ST-1LENR-2-CRB). The authors acknowledge the assistance of Mr. James Boyle and Mr. Dennis Fitch in obtaining the data.",

year = "1986",

doi = "10.1016/0010-2180(86)90121-5",

language = "English (US)",

volume = "63",

pages = "209--215",

journal = "Combustion and Flame",

issn = "0010-2180",

publisher = "Elsevier Inc.",

number = "1-2",

}

TY - JOUR

T1 - Evidence of the rich flammability limit for pulverized pittsburgh seam coal-air mixtures

AU - Slezak, Scott E.

AU - Buckius, Richard O.

AU - Krier, Herman

N1 - Funding Information: This work was supported, in part, by the National Science Foundation under Contract NSF 77-26973 and the Center for Research on Sulfur in Coal (ST-1LENR-2-CRB). The authors acknowledge the assistance of Mr. James Boyle and Mr. Dennis Fitch in obtaining the data.

PY - 1986

Y1 - 1986

N2 - Evidence for a rich flammability limit is presented for pulverized Pittsburgh seam coal (36% volatiles, 56.1% fixed carbon, 50 μm mass mean particle diameter). Experiments were conducted in a large (0.3 m diam by 4.5 m long) horizontal tube that generated a vertical dust concentration gradient for the rich mixtures. Horizontally propagating steady state flames were observed only in regions where the concentration was below 1.5 kg/m3. When the location where the dust concentration exceeded 1.5 kg/m3 was varied, the edge of the visible flame front moved accordingly. This is interpreted as evidence for a rich limit of 1.5 kg/m3 for this coal.

AB - Evidence for a rich flammability limit is presented for pulverized Pittsburgh seam coal (36% volatiles, 56.1% fixed carbon, 50 μm mass mean particle diameter). Experiments were conducted in a large (0.3 m diam by 4.5 m long) horizontal tube that generated a vertical dust concentration gradient for the rich mixtures. Horizontally propagating steady state flames were observed only in regions where the concentration was below 1.5 kg/m3. When the location where the dust concentration exceeded 1.5 kg/m3 was varied, the edge of the visible flame front moved accordingly. This is interpreted as evidence for a rich limit of 1.5 kg/m3 for this coal.

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ER -

Evidence of the rich flammability limit for pulverized pittsburgh seam coal-air mixtures

Abstract

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