Analysis of Coal Combustion in Oxy-fuel Conditions through Pulsed Feeding Experiments in an Entrained Flow Reactor

2013 ◽  
Vol 27 (5) ◽  
pp. 2732-2740 ◽  
Author(s):  
C. Galletti ◽  
E. Giacomazzi ◽  
S. Giammartini ◽  
G. Coraggio ◽  
L. Tognotti
Keyword(s):  
Coal Combustion ◽  
Flow Reactor ◽  
Entrained Flow ◽  
Feeding Experiments ◽  
Entrained Flow Reactor

Mass Absorption Corrected X-ray Diffraction Analysis of Entrained-Flow Reactor Coal Combustion Products

1990 ◽  
Vol 34 ◽  
pp. 429-435
Author(s):  
Leo W. Collins ◽  
David L. Wertz
Keyword(s):  
Coal Combustion ◽  
Initial Phase ◽  
Flow Reactor ◽  
Combustion Process ◽  
Combustion Products ◽  
X Ray Diffraction ◽  
Coal Combustion Products ◽  
X Ray ◽  
Entrained Flow ◽  
Entrained Flow Reactor

AbstractThe analysis of coal and the understanding of the combustion process is complex, due to the heterogeneous nature of the material and the myriad of high-temperature reactions inherent in this fossil fuel. The research presented below utilizes recently-developed x-ray diffraction methods to analyze the coal combustion products generated from a laboratory-scale entrained-flow reactor. The reactor was designed, constructed, and tested, as planned for the initial phase of a long-term project to evaluate the coals located in Mississippi. In this initial phase a well-characterized coal was used, supplied by The Pennsylvania State University. The proximate, ultimate, and sulfur analyses of the coal, PSOC 1368p, are outlined in the Appendix. X-ray diffraction techniques have been used In the past to characterize coals. An analysis of the mineral transformation during coal combustion has also been performed using x-ray diffraction instrumentation. The semi-quantitative results of the pyrite (FeS2) phase transformation at variable temperatures and the percent combustion of the coal, as determined by x-ray methods are reported below.

scholarly journals Simulation Study of the Formation of Corrosive Gases in Coal Combustion in an Entrained Flow Reactor

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4523
Author(s):  
Maximilian von Bohnstein ◽  
Coskun Yildiz ◽  
Lorenz Frigge ◽  
Jochen Ströhle ◽  
Bernd Epple
Keyword(s):  
Coal Combustion ◽  
Cfd Simulation ◽  
Flow Reactor ◽  
Three Dimensional ◽  
Mineral Matter ◽  
Sulfur Species ◽  
Entrained Flow ◽  
Trace Species ◽  
Entrained Flow Reactor ◽  
Gaseous Sulfur

Gaseous sulfur species play a major role in high temperature corrosion of pulverized coal fired furnaces. The prediction of sulfur species concentrations by 3D-Computational Fluid Dynamics (CFD) simulation allows the identification of furnace wall regions that are exposed to corrosive gases, so that countermeasures against corrosion can be applied. In the present work, a model for the release of sulfur and chlorine species during coal combustion is presented. The model is based on the mineral matter transformation of sulfur and chlorine bearing minerals under coal combustion conditions. The model is appended to a detailed reaction mechanism for gaseous sulfur and chlorine species and hydrocarbon related reactions, as well as a global three-step mechanism for coal devolatilization, char combustion, and char gasification. Experiments in an entrained flow were carried out to validate the developed model. Three-dimensional numerical simulations of an entrained flow reactor were performed by CFD using the developed model. Calculated concentrations of SO2, H2S, COS, and HCl showed good agreement with the measurements. Hence, the developed model can be regarded as a reliable method for the prediction of corrosive sulfur and chlorine species in coal fired furnaces. Further improvement is needed in the prediction of some minor trace species.

CFD modelling of oxy-coal combustion in an entrained flow reactor

2011 ◽  
Vol 92 (8) ◽  
pp. 1489-1497 ◽  
Author(s):  
L. Álvarez ◽  
M. Gharebaghi ◽  
M. Pourkashanian ◽  
A. Williams ◽  
J. Riaza ◽  
...  
Keyword(s):  
Coal Combustion ◽  
Flow Reactor ◽  
Cfd Modelling ◽  
Entrained Flow ◽  
Entrained Flow Reactor

Release of sulfur and chlorine gas species during coal combustion and pyrolysis in an entrained flow reactor

Fuel ◽  
2017 ◽  
Vol 201 ◽  
pp. 105-110 ◽  
Author(s):  
Lorenz Frigge ◽  
Jochen Ströhle ◽  
Bernd Epple
Keyword(s):  
Coal Combustion ◽  
Flow Reactor ◽  
Entrained Flow ◽  
Chlorine Gas ◽  
Entrained Flow Reactor

scholarly journals Oxy-coal combustion in an entrained flow reactor: Application of specific char and volatile combustion and radiation models for oxy-firing conditions

Energy ◽  
2013 ◽  
Vol 62 ◽  
pp. 255-268 ◽  
Author(s):  
L. Álvarez ◽  
C. Yin ◽  
J. Riaza ◽  
C. Pevida ◽  
J.J. Pis ◽  
...  
Keyword(s):  
Coal Combustion ◽  
Flow Reactor ◽  
Entrained Flow ◽  
Entrained Flow Reactor ◽  
Reactor Application

scholarly journals NO emissions in oxy-coal combustion with the addition of steam in an entrained flow reactor

2011 ◽  
Vol 1 (2) ◽  
pp. 180-190 ◽  
Author(s):  
Lucia Álvarez ◽  
Juan Riaza ◽  
Maria V. Gil ◽  
Covadonga Pevida ◽  
José J. Pis ◽  
...  
Keyword(s):  
Coal Combustion ◽  
Flow Reactor ◽  
Entrained Flow ◽  
Entrained Flow Reactor ◽  
No Emissions

Kinetic transformation of mercury in coal combustion flue gas in a bench-scale entrained-flow reactor

2004 ◽  
Vol 85 (6-7) ◽  
pp. 463-472 ◽  
Author(s):  
Ye Zhuang ◽  
Christopher J Zygarlicke ◽  
Kevin C Galbreath ◽  
Jeffrey S Thompson ◽  
Michael J Holmes ◽  
...  
Keyword(s):  
Flue Gas ◽  
Coal Combustion ◽  
Flow Reactor ◽  
Bench Scale ◽  
Entrained Flow ◽  
Entrained Flow Reactor ◽  
Kinetic Transformation

Experimental and numerical study of biomass flash pyrolysis in an entrained flow reactor

2010 ◽  
Vol 101 (10) ◽  
pp. 3678-3684 ◽  
Author(s):  
Shaozeng Sun ◽  
Hongming Tian ◽  
Yijun Zhao ◽  
Rui Sun ◽  
Hao Zhou
Keyword(s):  
Flow Reactor ◽  
Numerical Study ◽  
Flash Pyrolysis ◽  
Entrained Flow ◽  
Entrained Flow Reactor
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