Coal Mineral Matter Transformation During Combustion and Its Effects on Gas Turbine Blade Deposition and Erosion

1993 ◽  
Vol 115 (3) ◽  
pp. 634-640 ◽  
Author(s):  
S. Rajan ◽  
J. K. Raghavan
Keyword(s):  
Gas Turbine ◽  
Turbine Blade ◽  
Coal Combustion ◽  
Coal Dust ◽  
Pulverized Coal ◽  
Reaction Pathways ◽  
Mineral Matter ◽  
Pulverized Coal Combustion ◽  
Ft Ir ◽  
Mineral Transformations

The reaction pathways along which mineral matter is transformed during pulverized coal combustion and the corresponding characteristics of the ash formed are especially important from the standpoint of coal-fired gas turbine operation. Using a novel FT-IR technique and EDX analysis, these mineral matter transformations are investigated when coal is burned in a pulverized coal-dust burner. The mineral transformations of quartz, gypsum, calcite, dolomite, pyrite, and those of the aluminosilicate minerals, kaolinite and montmorillonite, have been evaluated. Discussion of the results focuses on the effect of these mineral transformations on the deposition and erosive characteristics of the resulting combustion-generated ash.

scholarly journals Coal Mineral Matter Transformation During Combustion and its Implications for Gas Turbine Blade Erosion

1990 ◽  
Author(s):  
S. Rajan ◽  
J. K. Raghavan
Keyword(s):  
Gas Turbine ◽  
Turbine Blade ◽  
Coal Dust ◽  
Turbine Blades ◽  
Mineral Matter ◽  
One Dimensional ◽  
Gas Turbine Blades ◽  
Edx Analysis ◽  
Ft Ir

The transformation of mineral matter during combustion and the characteristics of the ash formed are important from the standpoint of coal fired gas turbine operation. Using a novel FT-IR technique and EDX analysis, these mineral matter transformations are investigated when the coal is burnt in a one-dimensional pulverized coal-dust-air flame. The role of clays, pyrite, quartz, potassium and other compounds in the ash are discussed with particular reference to deposit buildup and erosion of gas turbine blades.

Mineral matter and trace-element vaporization in a laboratory-pulverized coal combustion system

1982 ◽  
Vol 16 (11) ◽  
pp. 776-781 ◽  
Author(s):  
Richard J. Quann ◽  
Matthew. Neville ◽  
Morteza. Janghorbani ◽  
Charles A. Mims ◽  
Adel F. Sarofim
Keyword(s):  
Trace Element ◽  
Coal Combustion ◽  
Pulverized Coal ◽  
Mineral Matter ◽  
Pulverized Coal Combustion ◽  
Combustion System

Mineral Matter Transformation During Pulverized Coal Combustion

2008 ◽  
Vol 9 (3-4) ◽  
pp. 313-327
Author(s):  
Eric G. Eddings ◽  
Kevin A. Davis ◽  
Michael P. Heap ◽  
James R. Valentine ◽  
Adel F. Sarofim
Keyword(s):  
Coal Combustion ◽  
Pulverized Coal ◽  
Mineral Matter ◽  
Pulverized Coal Combustion

scholarly journals Modeling of pulverized coal combustion stabilization by means of plasma torches

2005 ◽  
Vol 9 (2) ◽  
pp. 57-72 ◽  
Author(s):  
Miroslav Sijercic ◽  
Srdjan Belosevic ◽  
Predrag Stefanovic
Keyword(s):  
Numerical Simulation ◽  
Coal Combustion ◽  
Coal Dust ◽  
Pulverized Coal ◽  
Pulverized Coal Combustion ◽  
Plasma System ◽  
Utility Boiler ◽  
Plasma Torches ◽  
Combustion Stabilization ◽  
Ignition And Combustion

Application of plasma-system for pulverized coal ignition and combustion stabilization in utility boiler furnaces promises to achieve certain savings compared to the use of heavy oil burners. Plasma torches are built in air-coal dust mixture ducts between coal mills and burners. Characteristics of processes in the ducts with plasma-system for pulverized coal combustion stabilization are analyzed in the paper, with respect to the modeling and numerical simulation of mass, momentum and heat transfer in two-phase turbulent gas-particle flow. The simulations have been performed for three different geometries of the air-coal dust mixture ducts with plasma torches, for TENTAI utility boiler and pulverized lignite Kolubara-Field "D". Selected results of numerical simulation of processes are presented. The plasma-system thermal effect is discussed regarding corresponding savings of liquid fuel. The results of numerical simulations have been analyzed with respect to the processes in the duct and especially with respect to the influence of the duct shape to a temperature field at the outlet cross section, as a basis for the duct geometry optimization. It has been emphasized that numerical simulation of processes can be applied in analysis and optimization of pulverized coal ignition and combustion stabilization and enables efficient and cost-effective scaling-up procedure from laboratory to industrial level.

Vaporization and condensation of mineral matter during pulverized coal combustion

1981 ◽  
Vol 18 (1) ◽  
pp. 1267-1274 ◽  
Author(s):  
M. Neville ◽  
R.J. Quann ◽  
B.S. Haynes ◽  
A.F. Sarofim
Keyword(s):  
Coal Combustion ◽  
Pulverized Coal ◽  
Mineral Matter ◽  
Pulverized Coal Combustion
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