Conversion of gas/oil fired packaged boilers to micronized coal firing

Conference · Wed Jan 01 04:00:00 EST 1986

OSTI ID:6459234

Wiley, A C

In the past five years, a diverse group of engineers, coal companies, fuel institutes, utilities, and manufacturers of boilers and mills have proven the functional capabilities of micronized coal in installations ranging from asphalt plants to utility boilers. Based upon these studies and the authors' own testing, they confirm the following facts: Micronized coal is short and intense like and oil flame, Carbon burnout exceeds 99%, Combustion intensity is in excess of 90,000 Btu/cf, Radiant heat flux is considerably higher, and Ash deposition and ash furnace settling can be handled with conventional soot blowers. The primary obstacle to a large number of micronized coal fired installations has been capital and operating costs of the mill equipment. Centrifugal pneumatic technology has not been in the field long enough to ascertain all impending problems, but the initial operating data suggests that capital and operating costs are very favorable in today's economy with low gas and oil prices.

• OSTI ID: 6459234
• Report Number(s): CONF-8610266-
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
014000 -- Coal
Lignite
& Peat-- Combustion
20 FOSSIL-FUELED POWER PLANTS
200104* -- Fossil-Fueled Power Plants-- Components
200108 -- Fossil-Fueled Power Plants-- Fuels-- (1980-)
ASHES
BOILERS
COAL FINES
COMBUSTION CONTROL
COMBUSTION PROPERTIES
CONTROL
COST BENEFIT ANALYSIS
DEPOSITS
EVALUATION
FLUID MECHANICS
MECHANICS
OPERATION
PNEUMATICS
RESIDUES
RETROFITTING
TESTING