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Title: Comparative ignition tests of coal under oxy-fuel conditions in a standardized laboratory test rig

Ignitability is important to characterize pulverized coal combustion, as it is directly related to flame stability. The current paper describes a practical test rig for rapid laboratory analysis of pulverized coal cloud ignition properties. The system has been designed for conventional coal combustion conditions using air as the oxidant. In the current work, the measurement principle of the device is described and its adaption to and applicability for oxy-fuel combustion tests is demonstrated. Four coals with different rank were measured in air and in oxy-fuel atmospheres containing 20–35 vol% O 2 in CO 2. Finally, the major influencing factors for the investigated samples were found to be the coal rank and the gas-phase oxygen concentration, while a minor influence of particle size was observed.
Authors:
 [1] ;  [1] ;  [1] ;  [2] ;  [3] ;  [3]
  1. Ruhr-Univ. Bochum (Germany). Dept. of Energy Plant Technology
  2. Sandia National Lab. (SNL-CA), Livermore, CA (United States). Combustion Research Facility
  3. Uniper Technologies GmbH, Gelsenkirchen (Germany). Dept. of Chemical & Environmental Services
Publication Date:
Report Number(s):
SAND-2018-9993J
Journal ID: ISSN 0016-2361; 667812
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Fuel
Additional Journal Information:
Journal Volume: 208; Journal ID: ISSN 0016-2361
Publisher:
Elsevier
Research Org:
Sandia National Lab. (SNL-CA), Livermore, CA (United States); Ruhr-Univ. Bochum (Germany); Uniper Technologies GmbH, Gelsenkirchen (Germany)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA); German Research Foundation (DFG)
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; ignition; pulverized coal; oxy-fuel; coal rank; particle size
OSTI Identifier:
1473933

Becker, A., Schiemann, M., Scherer, V., Shaddix, C., Haxter, D., and Mayer, J.. Comparative ignition tests of coal under oxy-fuel conditions in a standardized laboratory test rig. United States: N. p., Web. doi:10.1016/j.fuel.2017.06.129.
Becker, A., Schiemann, M., Scherer, V., Shaddix, C., Haxter, D., & Mayer, J.. Comparative ignition tests of coal under oxy-fuel conditions in a standardized laboratory test rig. United States. doi:10.1016/j.fuel.2017.06.129.
Becker, A., Schiemann, M., Scherer, V., Shaddix, C., Haxter, D., and Mayer, J.. 2017. "Comparative ignition tests of coal under oxy-fuel conditions in a standardized laboratory test rig". United States. doi:10.1016/j.fuel.2017.06.129. https://www.osti.gov/servlets/purl/1473933.
@article{osti_1473933,
title = {Comparative ignition tests of coal under oxy-fuel conditions in a standardized laboratory test rig},
author = {Becker, A. and Schiemann, M. and Scherer, V. and Shaddix, C. and Haxter, D. and Mayer, J.},
abstractNote = {Ignitability is important to characterize pulverized coal combustion, as it is directly related to flame stability. The current paper describes a practical test rig for rapid laboratory analysis of pulverized coal cloud ignition properties. The system has been designed for conventional coal combustion conditions using air as the oxidant. In the current work, the measurement principle of the device is described and its adaption to and applicability for oxy-fuel combustion tests is demonstrated. Four coals with different rank were measured in air and in oxy-fuel atmospheres containing 20–35 vol% O2 in CO2. Finally, the major influencing factors for the investigated samples were found to be the coal rank and the gas-phase oxygen concentration, while a minor influence of particle size was observed.},
doi = {10.1016/j.fuel.2017.06.129},
journal = {Fuel},
number = ,
volume = 208,
place = {United States},
year = {2017},
month = {7}
}