Atomization of coal water mixtures: evaluation of fuel nozzles and a cellulose gum simulant
An experimental evaluation of four air-assist fuel nozzles has been conducted to determine atomization levels of coal-water mixture (CWM) fuels at operating conditions simulating a high pressure combustor. Two of the nozzles were commercial units marketed for use in atmospheric burners, while two nozzles were specially designed for CWM operation in a high pressure combustor. Sprays from all four injectors were characterized in tests performed over a range of liquid and air flowrates. Most of the tests were performed using a cellulose-gum water solution prepared to match the viscosity and drip characteristics of an available CWM. Atomization data acquired from a limited test series using the CWM were found to be properly represented by the gum solution data. High levels of atomization (SMD about 10 micron) were achieved by two of the nozzles - one commercial unit and one special unit - at an assist airflow level corresponding to a nozzle air-fuel ratio between 0.6 - 0.8.
- Research Organization:
- United Technologies Research Center, East Hartford, CT
- OSTI ID:
- 5511810
- Report Number(s):
- CONF-850351-
- Journal Information:
- Am. Soc. Mech. Eng., (Pap.); (United States), Vol. 85-GT-88; Conference: 30. international gas turbine conference and exhibit, Houston, TX, USA, 18 Mar 1985
- Country of Publication:
- United States
- Language:
- English
Similar Records
Atomization characteristics of coal-water slurry. Final report
Advanced coal-fueled gas turbine systems
Related Subjects
01 COAL, LIGNITE, AND PEAT
COAL
ATOMIZATION
COAL-FIRED GAS TURBINES
FUEL SYSTEMS
FUEL SLURRIES
SIMULATORS
CELLULOSE
FUEL-AIR RATIO
GUMS
NOZZLES
PERFORMANCE TESTING
ANALOG SYSTEMS
CARBOHYDRATES
CARBONACEOUS MATERIALS
DISPERSIONS
ENERGY SOURCES
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
GAS TURBINES
MACHINERY
MATERIALS
MIXTURES
ORGANIC COMPOUNDS
POLYSACCHARIDES
SACCHARIDES
SLURRIES
SUSPENSIONS
TESTING
TURBINES
TURBOMACHINERY
200108* - Fossil-Fueled Power Plants- Fuels- (1980-)
013000 - Coal
Lignite
& Peat- Transport
Handling
& Storage