Coal dust flame propagation in a laboratory flammability tube

Scott E. Slezak; Dennis J. Fitch; Herman Krier; Richard O. Buckius

doi:10.1016/0010-2180(83)90025-1

Coal dust flame propagation in a laboratory flammability tube

Scott E. Slezak, Dennis J. Fitch, Herman Krier, Richard O. Buckius

Mechanical Science and Engineering

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

Abstract

Coal dust flammability experiments are essential in order to evaluate propagation limit concentrations and the fundamental burning velocity rate as a function of dust concentration. This paper presents such data for Pittsburgh seam bituminous coal dust using a relatively large scale horizontal flammability apparatus, the gravity tumbler flammability tube (GTFT). The reported lean limit (based on propagating a steady state constant pressure flame) was measured as 420 g/m³, a factor of two or three greater than that reported from the modified Hartmann bomb apparatus. A maximum steady state flame speed was measured as 34 cm/s, at a concentration of 900 g/m³, a value greater than that observed when using held flame facilities.

Original language	English (US)
Pages (from-to)	103-119
Number of pages	17
Journal	Combustion and Flame
Volume	54
Issue number	1-3
DOIs	https://doi.org/10.1016/0010-2180(83)90025-1
State	Published - Dec 1983

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)
Fuel Technology
Energy Engineering and Power Technology
Physics and Astronomy(all)

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10.1016/0010-2180(83)90025-1

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title = "Coal dust flame propagation in a laboratory flammability tube",

abstract = "Coal dust flammability experiments are essential in order to evaluate propagation limit concentrations and the fundamental burning velocity rate as a function of dust concentration. This paper presents such data for Pittsburgh seam bituminous coal dust using a relatively large scale horizontal flammability apparatus, the gravity tumbler flammability tube (GTFT). The reported lean limit (based on propagating a steady state constant pressure flame) was measured as 420 g/m3, a factor of two or three greater than that reported from the modified Hartmann bomb apparatus. A maximum steady state flame speed was measured as 34 cm/s, at a concentration of 900 g/m3, a value greater than that observed when using held flame facilities.",

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

note = "Funding Information: This work was supported by the National Science Foundation, under grant #ENG 77-26973; Dr. Win Aung was the Program Director. Engineering assistants, Ronald J. Glumb and David Milleville, contributed in the test program.",

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AU - Slezak, Scott E.

AU - Fitch, Dennis J.

AU - Krier, Herman

AU - Buckius, Richard O.

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PY - 1983/12

Y1 - 1983/12

N2 - Coal dust flammability experiments are essential in order to evaluate propagation limit concentrations and the fundamental burning velocity rate as a function of dust concentration. This paper presents such data for Pittsburgh seam bituminous coal dust using a relatively large scale horizontal flammability apparatus, the gravity tumbler flammability tube (GTFT). The reported lean limit (based on propagating a steady state constant pressure flame) was measured as 420 g/m3, a factor of two or three greater than that reported from the modified Hartmann bomb apparatus. A maximum steady state flame speed was measured as 34 cm/s, at a concentration of 900 g/m3, a value greater than that observed when using held flame facilities.

AB - Coal dust flammability experiments are essential in order to evaluate propagation limit concentrations and the fundamental burning velocity rate as a function of dust concentration. This paper presents such data for Pittsburgh seam bituminous coal dust using a relatively large scale horizontal flammability apparatus, the gravity tumbler flammability tube (GTFT). The reported lean limit (based on propagating a steady state constant pressure flame) was measured as 420 g/m3, a factor of two or three greater than that reported from the modified Hartmann bomb apparatus. A maximum steady state flame speed was measured as 34 cm/s, at a concentration of 900 g/m3, a value greater than that observed when using held flame facilities.

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Coal dust flame propagation in a laboratory flammability tube

Abstract

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