Advanced atomization concept for CWF (coal-water fuel) burning in small combustors

Technical Report · Fri Sep 01 00:00:00 EDT 1989

DOI:https://doi.org/10.2172/5112675· OSTI ID:5112675

McHale, E. T.; Heaton, H. L.

Atlantic Research has undertaken a program to design, fabricate and test this new concept in coal-water fuel atomizers. The device employs two diametrically opposed jets of CWF which impinge on each other at high velocity. An air blast is directed at the impact zone of the two jets and the resulting high energy collision of all streams serves to break up the slurry fuel into fine droplets which are then directed by the air blast into the combustion zone. Prototypes of this atomizer have been built and tested under cold flow conditions using both water and CWF sprays. Based on the cold flow result with the prototypes, an atomizer has been fabricated for installation in a 1 MMBTU/H research tunnel-type'' furnace. A comprehensive testing program was conducted to evaluate the atomizer under firing conditions. The parameters covered in the test plan included CWF firing rate, atomizing air pressure, secondary air preheat temperature, secondary air diffuser design, CWF viscosity and solid content, CWF preheat temperature, and coal type. The effects of these parameters on combustion efficiency have been determined. 3 refs., 20 figs., 26 tabs.

• Research Organization: Atlantic Research Corp., Alexandria, VA (USA). Combustion Technology Dept.
• Sponsoring Organization: DOE/FE
• DOE Contract Number: AC22-87PC79656
• OSTI ID: 5112675
• Report Number(s): DOE/PC/79656-T1; ON: DE90005179
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
FUEL SLURRIES
ATOMIZATION
COAL
COMBUSTION
COMBUSTORS
DESIGN
DROPLETS
EQUIPMENT
PROGRESS REPORT
TESTING
WATER
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
DISPERSIONS
DOCUMENT TYPES
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
MATERIALS
MIXTURES
OXIDATION
OXYGEN COMPOUNDS
PARTICLES
SLURRIES
SUSPENSIONS
THERMOCHEMICAL PROCESSES
014000* - Coal
Lignite
& Peat- Combustion