Ash deposition from low rank coals
A laboratory test furnace was utilized to investigate ash deposit initiation and build-up as related to pulverized coal (p.c.)-fired combustion systems. Vertical tube furnace ( drop-tube'') investigations were conducted to study both ash deposition on heat transfer surfaces in a utility boiler and ash deposit formation on gas turbine hot gas pathways. In these tests, the rate of coal ash deposition and deposit strength were determined from coals ranging in rank from lignite to medium volatile bituminous. The presence of a low viscosity liquid phase in coal ashes has been shown to enhance the rate of deposit growth and deposit strength in both utility boilers and gas turbines. The objective of this work was to relate the rate of deposit formation and deposit strength from the test coals to their predicted ash viscosities. 79 refs., 56 figs., 33 tabs.
- Research Organization:
- Pennsylvania State Univ., University Park, PA (USA). Coll. of Earth and Mineral Sciences
- Sponsoring Organization:
- DOE/FE
- DOE Contract Number:
- AC21-85FC10627
- OSTI ID:
- 7172360
- Report Number(s):
- DOE/FC/10627-2799; ON: DE90000461
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
01 COAL, LIGNITE, AND PEAT
014000* -- Coal
Lignite
& Peat-- Combustion
20 FOSSIL-FUELED POWER PLANTS
200104 -- Fossil-Fueled Power Plants-- Components
ADHESION
AEROSOL WASTES
ASHES
BOILERS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMPRESSION STRENGTH
CORRELATIONS
CORROSION
DEPOSITION
DOCUMENT TYPES
ENERGY SOURCES
FLY ASH
FOSSIL FUELS
FUELS
GAS TURBINES
MACHINERY
MATERIALS
MECHANICAL PROPERTIES
OXIDATION
OXYGEN COMPOUNDS
PROGRESS REPORT
RESIDUES
SILICATES
SILICON COMPOUNDS
TEMPERATURE EFFECTS
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
VISCOSITY
WASTES
014000* -- Coal
Lignite
& Peat-- Combustion
20 FOSSIL-FUELED POWER PLANTS
200104 -- Fossil-Fueled Power Plants-- Components
ADHESION
AEROSOL WASTES
ASHES
BOILERS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COMBUSTION
COMPRESSION STRENGTH
CORRELATIONS
CORROSION
DEPOSITION
DOCUMENT TYPES
ENERGY SOURCES
FLY ASH
FOSSIL FUELS
FUELS
GAS TURBINES
MACHINERY
MATERIALS
MECHANICAL PROPERTIES
OXIDATION
OXYGEN COMPOUNDS
PROGRESS REPORT
RESIDUES
SILICATES
SILICON COMPOUNDS
TEMPERATURE EFFECTS
THERMOCHEMICAL PROCESSES
TURBINES
TURBOMACHINERY
VISCOSITY
WASTES