Coal-water-slurry technology development. Volume 1. Burner technology. Final report

Technical Report · Wed Feb 01 04:00:00 EST 1984

OSTI ID:5236578

Smith, D A; Rini, M J; LaFlesh, R C; Marion, J L

A commercial-scale coal-water slurry (CWS) burner was developed and test fired. This atomizer and burner system was developed in three steps: (1) Atomizer development and optimization using optical measurement techniques; (2) Burner air register development using cold flow modeling, and (3) Full scale (80 MBtu/h) combustion testing of the atomizer and air register. Approximately 20,000 gallons of CWS were fired, parent coal was also fired, as pulverized coal, to provide a direct comparison with CWS. Combustion tests show that CWS can be successfully fired with carbon conversion efficiencies of approximately 98%, which is about 1% less than that for the parent coal. Carbon conversion efficiency for CWS was found to be strongly dependent on atomization quality; smaller droplets improved efficiency. Firing CWS, the burner was operated over a 4 to 1 turn-down range, but at low load, high excess air levels (approximately 50%) were needed to maintain satisfactory flame quality. NO/sub x/ emission for CWS firing were comparable to the parent coal at high loads but lower (by 50 to 150 ppM) at reduced loads. In addition to documenting the CWS firing system's combustion performance, useful information has been obtained on slurry storage, transport, handling, and atomizer erosion. 16 references, 97 figures, 14 tables.

• Research Organization: Combustion Engineering, Inc., Windsor, CT (USA). Kreisinger Development Lab.
• OSTI ID: 5236578
• Report Number(s): EPRI-CS-3374-Vol.1; ON: DE84920331
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010600 -- Coal
Lignite
& Peat-- Properties & Composition
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
014000 -- Coal
Lignite
& Peat-- Combustion
ATOMIZATION
BOILERS
BURNERS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
COAL
COAL FINES
COMBUSTION PRODUCTS
COMBUSTION PROPERTIES
DATA
DISPERSIONS
ENERGY SOURCES
EXPERIMENTAL DATA
FOSSIL FUELS
FUEL SLURRIES
FUELS
HYDROGEN COMPOUNDS
INFORMATION
MATERIALS
MATERIALS HANDLING
MIXTURES
NITROGEN COMPOUNDS
NITROGEN OXIDES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
SLURRIES
STORAGE
SUSPENSIONS
SYNTHESIS
TEST FACILITIES
TESTING
TRANSPORT
WATER